A battery supplies
a. AC current
b. DC current
c. resistance
d. voltage
e. positive ions
B, D
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Which of the following is not a vector quantity?
A) velocity B) speed C) acceleration D) all are vector quantities E) none are vector quantities.
If bits of the coals do not stick to your feet while walking barefoot on red-hot coals, it would be best if your feet are
A) wet. B) dry. C) warm. D) cold. E) very hot.
A ping-pong ball moving east at a speed of 4 m/s, collides with a stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east
Which object experiences the greater magnitude impulse during the collision? A) Neither; both experienced the same magnitude impulse. B) the Ping-Pong ball C) the bowling ball D) It's impossible to tell since the actual mass values are not given. E) It's impossible to tell since the velocities after the collision are unknown.
A gallon container is filled with gasoline. How many gallons are lost if the temperature increases by 25°F? (The volume expansion of gasoline is 9.6 × 10^?4 (°C)?1.) (Neglect the change in volume of the container.)
a. 2.4 × 10^?2 b. 1.3 × 10^?2 c. 3.6 × 10^?2 d. 4.8 × 10^?2 e. 9.6 × 10^?2