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Question 1 4 pts One of Einstein's postulates in formulating the special theory of relativity was that the laws of physics are the same in reference frames that O move in the same direction. O are at rest. O oscillate. have constant non-zero acceleration. O move at constant velocity with respect to an inertial frame.Question z 4 Pts A rocket is traveling from left to right. A student sits halfway between two trees. When the rocket is directly above the student, the student sees lightning hit both trees at the same time. The picture shows the reference frame of the student. O For the student the tree on the right was struck first; for the rocket pilot the lightning strikes are simultaneous. For the student the lightning strikes are simultaneous; for the rocket pilot the tree on the left was struck first.D For the student the tree on the right was struck first; for the rocket pilot the lightning strikes are simultaneous. For the student the lightning strikes are simultaneous; for the rocket pilot the tree on the left was struck first. O For the student the tree on the left was struck first; for the rocket pilot the lightning strikes are simultaneous. For the student the lightning strikes are simultaneous; for the rocket pilot the tree on the right was struck first. View SonicQuestion 3 4 pts A spaceship traveling at constant velocity passes by Earth and later passes by Mars. In which frame of reference is the amount of time separating these two events the proper time? any inertial frame of reference the spaceship frame of reference O any frame of reference, inertial or not O the Earth frame of reference the Mars frame of referenceQuestion 4 4 pts You are moving at a speed 2/3 c toward Randy when he shines a light toward you. At what speed do you see the light approaching you? 0 3/2 c 0 5/3 c OC O 2/3 C 0 1/3 cQuestion 5 4 pts A spaceship carrying a light clock moves at a speed of 0.96c relative to an observer on Earth. If the clock on the ship advances by 1.0 s as measured by the space travelers aboard the ship, how long did that advance take as measured by the observer on Earth? 0 5.8 s 0 0.96 s 0 3.6 s 0 1.2 s 0 2.6 sQuestion 6 4 pts A spacecraft is measured by a scientist on the ground to have a length of 81.0 m as it flies overhead with a speed of .800c. The spacecraft then lands and its length is again measured by the scientist while it is at rest on the ground. What result does she now get for the length of the spacecraft? 0 135 m 0 48.6 m 0 181 m 0 81.0 m O 225 m\fQuestion 8 4 pts Two sources emit beams of microwaves. The microwaves from source A have a frequency of 10 GHz, and those from source B have a frequency of 20 GHz. This is all we know for certain about the two beams. Which of the following statements about these beams is definitely true? O O A photon in beam B has twice the energy of a photon in beam A. O Beam B carries twice as many photons per second as beam A. . A photon in beam B has the same energy as a photon in beam A. . The intensity of beam B is twice as great as the intensity of beam A.Question 9 4 pts When the surface of a certain metal is exposed to blue light, electrons are emitted. If the intensity of the blue light is then increased, which of the following things will also increase? O the number of electrons ejected per second O the maximum kinetic energy of the ejected electrons O the work function of the metal O the time lag between the onset of the absorption of light and the ejection of electrons O the threshold frequency for the metal