OSCILAÇÕES E ONDAS
A ondulatória é uma das principais áreas da física. Dentre os diversos tipos de ondas podemos classificá-las de acordo com sua natureza e forma de propagação. Sobre os tipos de onda é correto afirmar que:
a luz e o som são exemplos de ondas que possuem a mesma natureza e forma de propagação.
para ondas longitudinais a perturbação é perpendicular ao movimento de propagação da onda.
as ondas sonoras não necessitam de um meio para se propagar.
as ondas de natureza eletromagnética podem ser tanto transversais como longitudinais.
ondas transversais podem ter natureza tanto mecânica como eletromagnética.
Considere as seguintes afirmações sobre o movimento oscilatório:
I - O período de oscilação de um pêndulo simples é proporcional a sua massa.
II - Mesmo considerando pequenas oscilações, a frequência de um pêndulo físico depende da amplitude de movimento.
III - As oscilações de um pêndulo físico ocorrem devido a ação do torque realizado pela força peso do corpo.
É correto afirmar que:
apenas II e III são verdadeiras.
apenas III é verdadeira.
apenas II é verdadeira.
apenas I e III são verdadeiras.
apenas I é verdadeira.
Um pêndulo simples é formado por um fio de 60 cm de comprimento e uma esfera de massa 2 kg. Para pequenas oscilações, podemos observar que sua frequência de oscilação é aproximadamente:
Considere: g = 9,8 m/s2
1,55 Hz
0,64 Hz
0,92 Hz
1,22 Hz
0,32 Hz
Considere um sistema que realiza um movimento harmônico simples com amplitude A = 0,3 m e frequência de oscilação f = 20 Hz. No instante t = 0 s a partícula se encontra na posíção x(0) = 0,3 m. Sendo assim, a função horária desse sistema é dada pela expressão:
![](data:image/png;base64,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)
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![](data:image/png;base64,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)
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Um sistema massa-mola que executa um movimento harmônico simples com amplitude máxima igual à 2 m. Sendo a massa da partícula igual à 0,5 kg e a constante de mola 200 N/m, temos que a velocidade da partícula quando passa pela posição de equilíbrio é aproximadamente:
10 m/s
2 m/s
40 m/s
20 m/s
4 m/s
Uma das cordas de um instrumento musical possui duas frequências ressonantes adjacentes em 180Hz e 240Hz. Sendo assim, a frequência fundamental de vibração dessa corda é:
60Hz
180Hz
90Hz
30Hz
120Hz
Analise as seguintes afirmações a respeito das ondas eletromagnéticas:
I – As ondas eletromagnéticas são formadas pelos campos elétrico e magnético que variam em função do tempo e se propagam paralelamente entre si.
II – O espectro eletromagnético abrange um conjunto de frequências de onda que vão desde ondas de rádio até os raios gama.
III – A velocidade de propagação de uma onda eletromagnética no vácuo, depende de sua frequência de oscilação.
Sobre essas afirmações é correto afirmar que:
Todas são verdadeiras.
apenas II é verdadeira.
apenas I é verdadeira.
II e III são verdadeiras.
I e III são verdadeiras.
Ondas são perturbações que se propagam de um lugar para outro através de um meio ou até mesmo no vácuo, transportando energia. Ondas são perturbações que se deslocam no espaço transportando, exclusivamente, energia de um ponto a outro, sem realizar transporte de matéria.
Dois pulsos, A e B, são produzidos em uma corda esticada, que tem uma extremidade fixada numa parede, conforme mostra a figura.
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Quando os dois pulsos se superpuserem, após o pulso A ter sofrido reflexão na parede, ocorrerá interferência:
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
A função de onda abaixo descreve o comportamento de uma onda estacionária. Podemos dizer que a distância entre dois nós adjacentes dessa onda vale:
![](data:image/png;base64,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)
a luz e o som são exemplos de ondas que possuem a mesma natureza e forma de propagação.
para ondas longitudinais a perturbação é perpendicular ao movimento de propagação da onda.
as ondas sonoras não necessitam de um meio para se propagar.
as ondas de natureza eletromagnética podem ser tanto transversais como longitudinais.
ondas transversais podem ter natureza tanto mecânica como eletromagnética.
Considere as seguintes afirmações sobre o movimento oscilatório:
I - O período de oscilação de um pêndulo simples é proporcional a sua massa.
II - Mesmo considerando pequenas oscilações, a frequência de um pêndulo físico depende da amplitude de movimento.
III - As oscilações de um pêndulo físico ocorrem devido a ação do torque realizado pela força peso do corpo.
É correto afirmar que:
apenas II e III são verdadeiras.
apenas III é verdadeira.
apenas II é verdadeira.
apenas I e III são verdadeiras.
apenas I é verdadeira.
Um pêndulo simples é formado por um fio de 60 cm de comprimento e uma esfera de massa 2 kg. Para pequenas oscilações, podemos observar que sua frequência de oscilação é aproximadamente:
Considere: g = 9,8 m/s2
1,55 Hz
0,64 Hz
0,92 Hz
1,22 Hz
0,32 Hz
Considere um sistema que realiza um movimento harmônico simples com amplitude A = 0,3 m e frequência de oscilação f = 20 Hz. No instante t = 0 s a partícula se encontra na posíção x(0) = 0,3 m. Sendo assim, a função horária desse sistema é dada pela expressão:
![](data:image/png;base64,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)
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Um sistema massa-mola que executa um movimento harmônico simples com amplitude máxima igual à 2 m. Sendo a massa da partícula igual à 0,5 kg e a constante de mola 200 N/m, temos que a velocidade da partícula quando passa pela posição de equilíbrio é aproximadamente:
10 m/s
2 m/s
40 m/s
20 m/s
4 m/s
Uma das cordas de um instrumento musical possui duas frequências ressonantes adjacentes em 180Hz e 240Hz. Sendo assim, a frequência fundamental de vibração dessa corda é:
60Hz
180Hz
90Hz
30Hz
120Hz
Analise as seguintes afirmações a respeito das ondas eletromagnéticas:
I – As ondas eletromagnéticas são formadas pelos campos elétrico e magnético que variam em função do tempo e se propagam paralelamente entre si.
II – O espectro eletromagnético abrange um conjunto de frequências de onda que vão desde ondas de rádio até os raios gama.
III – A velocidade de propagação de uma onda eletromagnética no vácuo, depende de sua frequência de oscilação.
Sobre essas afirmações é correto afirmar que:
Todas são verdadeiras.
apenas II é verdadeira.
apenas I é verdadeira.
II e III são verdadeiras.
I e III são verdadeiras.
Ondas são perturbações que se propagam de um lugar para outro através de um meio ou até mesmo no vácuo, transportando energia. Ondas são perturbações que se deslocam no espaço transportando, exclusivamente, energia de um ponto a outro, sem realizar transporte de matéria.
Dois pulsos, A e B, são produzidos em uma corda esticada, que tem uma extremidade fixada numa parede, conforme mostra a figura.
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Quando os dois pulsos se superpuserem, após o pulso A ter sofrido reflexão na parede, ocorrerá interferência:
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
A função de onda abaixo descreve o comportamento de uma onda estacionária. Podemos dizer que a distância entre dois nós adjacentes dessa onda vale:
![](data:image/png;base64,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)
apenas II e III são verdadeiras.
apenas III é verdadeira.
apenas II é verdadeira.
apenas I e III são verdadeiras.
apenas I é verdadeira.
Um pêndulo simples é formado por um fio de 60 cm de comprimento e uma esfera de massa 2 kg. Para pequenas oscilações, podemos observar que sua frequência de oscilação é aproximadamente:
Considere: g = 9,8 m/s2
1,55 Hz
0,64 Hz
0,92 Hz
1,22 Hz
0,32 Hz
Considere um sistema que realiza um movimento harmônico simples com amplitude A = 0,3 m e frequência de oscilação f = 20 Hz. No instante t = 0 s a partícula se encontra na posíção x(0) = 0,3 m. Sendo assim, a função horária desse sistema é dada pela expressão:
![](data:image/png;base64,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)
![](data:image/png;base64,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)
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Um sistema massa-mola que executa um movimento harmônico simples com amplitude máxima igual à 2 m. Sendo a massa da partícula igual à 0,5 kg e a constante de mola 200 N/m, temos que a velocidade da partícula quando passa pela posição de equilíbrio é aproximadamente:
10 m/s
2 m/s
40 m/s
20 m/s
4 m/s
Uma das cordas de um instrumento musical possui duas frequências ressonantes adjacentes em 180Hz e 240Hz. Sendo assim, a frequência fundamental de vibração dessa corda é:
60Hz
180Hz
90Hz
30Hz
120Hz
Analise as seguintes afirmações a respeito das ondas eletromagnéticas:
I – As ondas eletromagnéticas são formadas pelos campos elétrico e magnético que variam em função do tempo e se propagam paralelamente entre si.
II – O espectro eletromagnético abrange um conjunto de frequências de onda que vão desde ondas de rádio até os raios gama.
III – A velocidade de propagação de uma onda eletromagnética no vácuo, depende de sua frequência de oscilação.
Sobre essas afirmações é correto afirmar que:
Todas são verdadeiras.
apenas II é verdadeira.
apenas I é verdadeira.
II e III são verdadeiras.
I e III são verdadeiras.
Ondas são perturbações que se propagam de um lugar para outro através de um meio ou até mesmo no vácuo, transportando energia. Ondas são perturbações que se deslocam no espaço transportando, exclusivamente, energia de um ponto a outro, sem realizar transporte de matéria.
Dois pulsos, A e B, são produzidos em uma corda esticada, que tem uma extremidade fixada numa parede, conforme mostra a figura.
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Quando os dois pulsos se superpuserem, após o pulso A ter sofrido reflexão na parede, ocorrerá interferência:
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
A função de onda abaixo descreve o comportamento de uma onda estacionária. Podemos dizer que a distância entre dois nós adjacentes dessa onda vale:
![](data:image/png;base64,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)
1,55 Hz
0,64 Hz
0,92 Hz
1,22 Hz
0,32 Hz
Considere um sistema que realiza um movimento harmônico simples com amplitude A = 0,3 m e frequência de oscilação f = 20 Hz. No instante t = 0 s a partícula se encontra na posíção x(0) = 0,3 m. Sendo assim, a função horária desse sistema é dada pela expressão:
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKkAAAAhCAYAAACiNouaAAAGIUlEQVR4Ae2cPU4lOxCF2QM7IGAHJKQkxASQkcECEAtAxIgNQI6IEeSwABYAOSyABfTT13qHqanrctv3Z+YyKkstd7fL9XN8XLb7IjaGLInAmiOwseb+pXuJwJAkTRKsDIHPz8/h6ekpvGhvKUnSFpRSphuB19fXYX9/fzg6Oho2NzeH09PT8eKed+fn58Pb21uT3iRpE0wp1IsABPz6+hqurq6G4+PjsTvE3dnZGT4+PrrUJUm74ErhXgQg6MPDw9gNwu7t7Y3k7dGTJO1BK2W7ECCTHh4eDmRQCoRVVu1RlCTtQStluxCwyzuEJYsqq/YoSpL2oJWyXQjY/Sj7UPajEFf71VZlSdJWpFKuCwHIyEkeolIg6dbW1vju7OysS9fCJCWNY/Tk5KT6SeHx8XH8JHF3d9flYAonAguRVPsMzZYpOHvlp/S1tLO0MIF2d3cnJxL+3d7ejpMJeb7ztX7La/GlV6aUAEo+kgBs6YnZ9vsb9y3JayGS2j2HDxAwX15eZj432L2J77PsZy0x2qzjL0sO733BXzb2nD65pyDPkqXTqe+zymf5YxOA3tnPON7H1pjRVRqfWkwQyk+Imnxrm+Kysdq+c5PUg2GVcm9Pdr5t3k8RXs/UM0HbAZXPJTAA6vr6+rfMqX2VSD5lb5nt+Og/19R8VEytMdfGJ4oD3bITycz7nrHRwcrrKJJUYDBo3FNYQi4vL78HkYGLshKyGOS6v7+fmbG1vt7BeZ/xW5lROkrv1Faq8bOWSfntGYz4yc9igy7bRvYRjrLDM+/1c6GV0WRqmRx2IpXiK72bGh/56OtVkhRbUfIqkvTi4mLcmzFAAAVo7M+4uKf4GauABD4EZS/IHxiwrNgCsNvb29VlFD3aS7I/jC5kkPVFA+1nPkDY7Or76ZmBJN7ooKdMRC0iyBaYKSvQhk2ehZ2Xly610z9KAPJPtR2HlpixzYSojY90+xpbitG3LeM5irtIUhkEXAjLHwMIQLVZcPROtcDCaKm0kJR+kLv2VzSlCSB78sGDOkVSfGZybmxsjJOk9Jc6nmTYhNRcpTbvC/ErAchfW9ewtXIeR29Hsj5myUXjo36+xi+Pp5fRM/hNXZJV7ePR+ypJcSha7nzgUkgdzQjJRM6ofRm1BsKDWvPb2oVsyJbir5Gs1Cbioo+iZ3TbLZXs4/NUtscOqwu1SmvMU+NjfZwiWuTnVD/afSGW0go7K2l61oKpAVlrQ33kjDE93i6SSUUEEUO6efbv1ObraNDxP8qEpbbIF7YSDAq6bm5uvs3jXzT4COEXWxGfCSM7Puap8fl2xN3Qj2tVJeJFSFI68Hd/2lt5x2oE9qD09JUsgOtQosNFqS5lIunwg61BbAU6Iqnee5Jgt9Q2ZRd/7B6U54ik0lWyjf2WmKfGR/j5Gr9asfN9W56bScoeTARljwVYOAb49gDEc4nAAlHBkCGen59/85E2gFp1YSDtck1c/gDDX+ngo/y2gx+BJllLJGR1Que9jc/rwQZ7fRXvF+2WtJKjBruDg4Ph/f39+0KX8G6JWWOKvtL4WHv2HhuyY98v6z6KeyaTAq4dWJxi/2BP9nIqmpH8TEof9kx2GaNfKdNI3ypq/GdJJQvjD0CoiGzIcI/fxM4KIvnodM8EhvCK035l0AQGM+mxdrmnn7VjcVJ/yGuLsKOvvyx5ajGjrzY+1p6/R6+149v9M5j6X/CYyFFBt53ckpshqRpa6gjMWt+I2LU+y2grndIj/wGXq6VMydXaaSv5hd1l4BTpbomrJKMvGKU2/47YyNhcwgAS2gRo+2gC2sms9oVIihIcJ2NoyZRiXwMY2YZZLKe9zJ9+xpcoU/5pX7y9aAJ5uXV9Zow5L8APFVYGSFrKxrVJuTBJrQO1mYuDtXbpyfoXAq0J4FeP9b4TSW22bEleSyPpesPzs737VyY4GdQu/4xKS2xJ0p/N3x/jPWQsfahvCSBJ2oJSyiyEAAT1v471KEyS9qCVst0IcAAs/TrWoyhJ2oNWynYhoM9Q9qDUpeB/4STpPKhlnyYEOCjVfh1rUjIM+Q/LWoFKuT4E9HHe/zLGc+k7aU17ZtIaOtm2Fgj8B+OgRvjTlKdcAAAAAElFTkSuQmCC)
![](data:image/png;base64,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)
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Um sistema massa-mola que executa um movimento harmônico simples com amplitude máxima igual à 2 m. Sendo a massa da partícula igual à 0,5 kg e a constante de mola 200 N/m, temos que a velocidade da partícula quando passa pela posição de equilíbrio é aproximadamente:
10 m/s
2 m/s
40 m/s
20 m/s
4 m/s
Uma das cordas de um instrumento musical possui duas frequências ressonantes adjacentes em 180Hz e 240Hz. Sendo assim, a frequência fundamental de vibração dessa corda é:
60Hz
180Hz
90Hz
30Hz
120Hz
Analise as seguintes afirmações a respeito das ondas eletromagnéticas:
I – As ondas eletromagnéticas são formadas pelos campos elétrico e magnético que variam em função do tempo e se propagam paralelamente entre si.
II – O espectro eletromagnético abrange um conjunto de frequências de onda que vão desde ondas de rádio até os raios gama.
III – A velocidade de propagação de uma onda eletromagnética no vácuo, depende de sua frequência de oscilação.
Sobre essas afirmações é correto afirmar que:
Todas são verdadeiras.
apenas II é verdadeira.
apenas I é verdadeira.
II e III são verdadeiras.
I e III são verdadeiras.
Ondas são perturbações que se propagam de um lugar para outro através de um meio ou até mesmo no vácuo, transportando energia. Ondas são perturbações que se deslocam no espaço transportando, exclusivamente, energia de um ponto a outro, sem realizar transporte de matéria.
Dois pulsos, A e B, são produzidos em uma corda esticada, que tem uma extremidade fixada numa parede, conforme mostra a figura.
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Quando os dois pulsos se superpuserem, após o pulso A ter sofrido reflexão na parede, ocorrerá interferência:
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
A função de onda abaixo descreve o comportamento de uma onda estacionária. Podemos dizer que a distância entre dois nós adjacentes dessa onda vale:
![](data:image/png;base64,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)
Um sistema massa-mola que executa um movimento harmônico simples com amplitude máxima igual à 2 m. Sendo a massa da partícula igual à 0,5 kg e a constante de mola 200 N/m, temos que a velocidade da partícula quando passa pela posição de equilíbrio é aproximadamente:
10 m/s
2 m/s
40 m/s
20 m/s
4 m/s
Uma das cordas de um instrumento musical possui duas frequências ressonantes adjacentes em 180Hz e 240Hz. Sendo assim, a frequência fundamental de vibração dessa corda é:
60Hz
180Hz
90Hz
30Hz
120Hz
Analise as seguintes afirmações a respeito das ondas eletromagnéticas:
I – As ondas eletromagnéticas são formadas pelos campos elétrico e magnético que variam em função do tempo e se propagam paralelamente entre si.
II – O espectro eletromagnético abrange um conjunto de frequências de onda que vão desde ondas de rádio até os raios gama.
III – A velocidade de propagação de uma onda eletromagnética no vácuo, depende de sua frequência de oscilação.
Sobre essas afirmações é correto afirmar que:
Todas são verdadeiras.
apenas II é verdadeira.
apenas I é verdadeira.
II e III são verdadeiras.
I e III são verdadeiras.
Ondas são perturbações que se propagam de um lugar para outro através de um meio ou até mesmo no vácuo, transportando energia. Ondas são perturbações que se deslocam no espaço transportando, exclusivamente, energia de um ponto a outro, sem realizar transporte de matéria.
Dois pulsos, A e B, são produzidos em uma corda esticada, que tem uma extremidade fixada numa parede, conforme mostra a figura.
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Quando os dois pulsos se superpuserem, após o pulso A ter sofrido reflexão na parede, ocorrerá interferência:
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
A função de onda abaixo descreve o comportamento de uma onda estacionária. Podemos dizer que a distância entre dois nós adjacentes dessa onda vale:
![](data:image/png;base64,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)
10 m/s
2 m/s
40 m/s
20 m/s
4 m/s
Uma das cordas de um instrumento musical possui duas frequências ressonantes adjacentes em 180Hz e 240Hz. Sendo assim, a frequência fundamental de vibração dessa corda é:
60Hz
180Hz
90Hz
30Hz
120Hz
Analise as seguintes afirmações a respeito das ondas eletromagnéticas:
I – As ondas eletromagnéticas são formadas pelos campos elétrico e magnético que variam em função do tempo e se propagam paralelamente entre si.
II – O espectro eletromagnético abrange um conjunto de frequências de onda que vão desde ondas de rádio até os raios gama.
III – A velocidade de propagação de uma onda eletromagnética no vácuo, depende de sua frequência de oscilação.
Sobre essas afirmações é correto afirmar que:
Todas são verdadeiras.
apenas II é verdadeira.
apenas I é verdadeira.
II e III são verdadeiras.
I e III são verdadeiras.
Ondas são perturbações que se propagam de um lugar para outro através de um meio ou até mesmo no vácuo, transportando energia. Ondas são perturbações que se deslocam no espaço transportando, exclusivamente, energia de um ponto a outro, sem realizar transporte de matéria.
Dois pulsos, A e B, são produzidos em uma corda esticada, que tem uma extremidade fixada numa parede, conforme mostra a figura.
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Quando os dois pulsos se superpuserem, após o pulso A ter sofrido reflexão na parede, ocorrerá interferência:
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
A função de onda abaixo descreve o comportamento de uma onda estacionária. Podemos dizer que a distância entre dois nós adjacentes dessa onda vale:
![](data:image/png;base64,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)
60Hz
180Hz
90Hz
30Hz
120Hz
Analise as seguintes afirmações a respeito das ondas eletromagnéticas:
I – As ondas eletromagnéticas são formadas pelos campos elétrico e magnético que variam em função do tempo e se propagam paralelamente entre si.
II – O espectro eletromagnético abrange um conjunto de frequências de onda que vão desde ondas de rádio até os raios gama.
III – A velocidade de propagação de uma onda eletromagnética no vácuo, depende de sua frequência de oscilação.
Sobre essas afirmações é correto afirmar que:
Todas são verdadeiras.
apenas II é verdadeira.
apenas I é verdadeira.
II e III são verdadeiras.
I e III são verdadeiras.
Ondas são perturbações que se propagam de um lugar para outro através de um meio ou até mesmo no vácuo, transportando energia. Ondas são perturbações que se deslocam no espaço transportando, exclusivamente, energia de um ponto a outro, sem realizar transporte de matéria.
Dois pulsos, A e B, são produzidos em uma corda esticada, que tem uma extremidade fixada numa parede, conforme mostra a figura.
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Quando os dois pulsos se superpuserem, após o pulso A ter sofrido reflexão na parede, ocorrerá interferência:
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
A função de onda abaixo descreve o comportamento de uma onda estacionária. Podemos dizer que a distância entre dois nós adjacentes dessa onda vale:
![](data:image/png;base64,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)
Todas são verdadeiras.
apenas II é verdadeira.
apenas I é verdadeira.
II e III são verdadeiras.
I e III são verdadeiras.
Ondas são perturbações que se propagam de um lugar para outro através de um meio ou até mesmo no vácuo, transportando energia. Ondas são perturbações que se deslocam no espaço transportando, exclusivamente, energia de um ponto a outro, sem realizar transporte de matéria.
Dois pulsos, A e B, são produzidos em uma corda esticada, que tem uma extremidade fixada numa parede, conforme mostra a figura.
![](data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEAYABgAAD/4RCURXhpZgAATU0AKgAAAAgABAE7AAIAAAALAAAISodpAAQAAAABAAAIVpydAAEAAAAWAAAQduocAAcAAAgMAAAAPgAAAAAc6gAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFdlbGxpbmd0b24AAAAB6hwABwAACAwAAAhoAAAAABzqAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA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Quando os dois pulsos se superpuserem, após o pulso A ter sofrido reflexão na parede, ocorrerá interferência:
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
A função de onda abaixo descreve o comportamento de uma onda estacionária. Podemos dizer que a distância entre dois nós adjacentes dessa onda vale:
![](data:image/png;base64,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)
destrutiva e, em seguida, os pulsos deixarão de existir, devido à absorção da energia durante a interação.
construtiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, os dois pulsos seguirão juntos no sentido do pulso de maior energia.
destrutiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.
construtiva e, em seguida, cada pulso seguirá seu caminho, mantendo suas características originais.