A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the average collision force is correct?
A) It is impossible to tell since the masses and velocities are not given.
B) The small car experiences the greater average force.
C) The small car and the truck experience the same average force.
D) The truck experiences the greater average force.
C
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A body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x = 5.0 sin (pt + p/3). The velocity (in m/s) of the body at t = 1.0 s is
a. +7.9 b. -7.9 c. -14 d. +14 e. -5.0
The _________electrode is a 1-molar solution of hydrogen ions (H+ ) in HCl in contact with hydrogen gas at 1 atmosphere of pressure.
Fill in the blank(s) with the appropriate word(s).
An object of weight W is in freefall close to the surface of Earth. The magnitude of the force that the object exerts on Earth is
A) greater than W. B) less than W. C) equal to W. D) zero. E) cannot be determined without knowing the relative masses of the object and the earth.
Spicules can trigger communications blackouts and auroras on Earth
a. True b. False Indicate whether the statement is true or false