John is in an inertial frame F and Jack is in a frame F' moving relative to F in the x-direction at a constant velocity v. John and Jack each hold a 1-m stick with them oriented in the x-direction. Which one of the following statements best describes the situation?
A.
While John indeed measures Jack's stick as shorter than his own, this is not the statement that best describes the situation. John sees Jack's frame of reference as moving with respect to his own, and by the special theory of relativity, moving objects appear shorter to non-moving observers
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A car is driving on a level highway. It is acted upon by the following forces: a downward gravitational force of 12 kN, an upward contact force due to the road of 12 kN, another contact force due to the road of 7 kN directed West, and a drag force due to air resistance of 5 kN directed East. What is the net force acting on the car?
A. 7 kN East B. 24 kN up C. 2 kN West D. 5 kN East E. 2 kN East
It is found that at a laser bounced off the surface of a liquefied gas is perfectly polarized when the angle of incidence of the laser beam is 45.7 degrees from the vertical. What is the index of refraction of this material?
A. 1.43 B. 1.397 C. 1.412 D. 1.091 E. 1.025
Maria are light-colored mountainous lunar highlands
Indicate whether the statement is true or false
Where is Jupiter's strong magnetic field generated?
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