When a photon collides with a free electron at rest and the direction of motion of the photon changes,
a. the magnitude of the momentum of the photon does not change.
b. the momentum of the electron does not change.
c. the kinetic energy of the electron does not change.
d. the total energy of the photon does not change.
e. both the magnitude of the momentum and the total energy of the photon decrease.
e
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For a forced vibration, the amplitude of vibration is found to depend on the
A) sum of the external frequency and the natural frequency. B) difference of the external frequency and the natural frequency. C) product of the external frequency and the natural frequency. D) ratio of the external frequency and the natural frequency. E) ratio of the natural frequency and the external frequency.
A star system can become a Type I supernova several times
Indicate whether the statement is true or false
Parallel-Plate Capacitor: Two large closely-spaced parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 × 106 N/C.(a) What is the charge per unit area on each plate?(b) If the plates are now moved two times farther apart, what is the electric field between the plates?
What will be an ideal response?
Two masses are being pulled up a 30.0 degrees incline by a force F parallel to the incline. The acceleration down the incline is 1.00 
and the velocity is up the incline. The force is applied to a 200 kg mass and a string connects the 200 kg mass to a 150 kg mass. There is no friction. The tension in the string is
A. 2070 N. B. 1470 N. C. 980 N. D. 771 N. E. 1,710 N.