A car moves from a point located 26.0 m from the origin and at an angle of 35.0° from the x-axis to a point located 56.0 m from the origin and at an angle of 60.0° from the x-axis in 2.50 s
What is the magnitude of the average velocity of the car? A) 12.7 m/s
B) 13.7 m/s
C) 16.1 m/s
D) 18.3 m/s
E) 17.2 m/s
B
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If you launch two probes in opposite directions from the Space Station, they will meet as they orbit Earth. According to general relativity, why does this happen?
A) They are following the straightest possible paths through space time, but those paths happen to meet. B) They are following the allowed orbits according to Newton's universal law of gravitation. C) The force of gravity tugs on the probes and forces them to orbit Earth. D) Objects launched in space always follow circular paths, no matter where they are.
An ideal gas is allowed to expand adiabatically until its volume increases by 50%. By approximately what factor is the pressure reduced? (? = 5/3.)
A. 1.5 B. 2.0 C. 2.5 D. 3.0 E. 3.5
An electron, moving toward the west, enters a uniform magnetic field. Because of this field the electron curves upward. The direction of the magnetic field is
A) towards the south. B) upward. C) towards the west. D) towards the north. E) downward.
Faraday's Law states that a voltage is induced in a circuit when there is a changing ________ passing through the circuit.
Fill in the blank(s) with the appropriate word(s).