Answer the following statement(s) true (T) or false (F)
1. You are driving 5 ft or so behind a pickup truck (don’t actually try such a stupid tailgating stunt, of course!). A jostled crate tips off the back of the truck with only a very small backward velocity. The crate will not hit your car until after it hits the road, regardless of your speed.
2. A person standing in the cabin of a jet plane drops a coin. This coin hits the floor of the cabin at a point directly below where it was dropped (as seen in the cabin) no matter how fast the plane is moving.
3. An orbiting satellite experiences no forces other than the force of gravity. It therefore exhibits simple projectile motion.
1. TRUE
2. TRUE
3. FALSE
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How much heat is required to raise the temperature of a 225-g lead ball from 15.0°C to 25.0°C? The specific heat of lead is 128 J/kg ? K
A) 725 J B) 576 J C) 145 J D) 217 J E) 288 J
Compared to the density of water, the density of Saturn is
A) less. B) more. C) about the same.
A particle (m = 2.0 ?g, q = ?5.0 ?C) has a speed of 30 m/s at point A and moves (with only electric forces acting on it) to point B where its speed is 80 m/s. Determine the electric potential difference VA ? VB
a. ?2.2 kV b. +1.1 kV c. ?1.1 kV d. +2.2 kV e. +1.3 kV
Which condition of motion must be met with regard to a charged particle if it is in the process of emitting electromagnetic radiation?
a. moves at constant velocity b. accelerates c. moves at the speed of light d. moves parallel to a uniform magnetic field