A car headlight and an interior dome light use the same voltage, but the headlight consumes much more power because
a. its resistance is lower
b. the current in it is larger
c. it uses energy faster
d. all of the above
D
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A marble moving 1.48 m/s rolls off the top edge of a 125. cm high table
(a) How far from the base of the table did it strike the floor? (b) How long was it "in flight"?
A pilot makes an outside vertical loop of radius 320 m. At the top of his loop he is pushing down on his seat with only one-half of his normal weight. How fast is he moving?
What will be an ideal response?
The force of a boxer's punch is greater when it hits a
A) small punching bag. B) heavy punching bag. C) both forces would be the same for the same effort
An ideal gas is at a temperature of 40
and a pressure of 2.00 atmospheres. If the diameter of an N2 molecule is 0.300 nm, then what is the mean free path of the N2 molecule in the gas?
a. 
b. 
c. 
d. 
e. 