You go out for a burger with some friends. At the restaurant the waiter serves you your burger on a plate. You pick up the burger with your hand and lift it to your mouth. About how much power did you expend when you lifted the burger to your mouth from the plate?
1.0.1 watts
2.1 watt
3.10 watts
4.100 watts
2
You might also like to view...
What is the Kuiper belt?
A) a region of the solar system beginning just beyond the orbit of Neptune that contains many icy comets B) a region of the solar system that extends almost a fourth of the way to the nearest stars and contains a trillion comets with orbits going in all directions around the Sun C) a technical name for the asteroid belt D) the most prominent ring of Saturn that is visible in photographs
Consider the following reaction. ?+ + n ? ?– + p This reaction is impossible because it violates which conservation law?
a. baryon number b. lepton number c. strangeness d. charge e. two of the above
A 500?g block traveling at 60 cm/s slides onto a 1?kg cart as shown. The block stops sliding before reaching the end of the cart
As the block is sliding on the cart,
which object has the larger acceleration?
A 100. gram steel bullet moves at 250. m/s just before imbedding itself into a thick anchored wood post. If 40.% of the initial kinetic energy goes into heating the bullet (steel c = 460.J/kg-C):
(a) how hot does the bullet become if it initially is at 25.°C? (b) what would be the bullet's temperature if it had been twice as massive ( 2 times 100. grams)?