Two eggs of equal mass are thrown at a blanket with equal velocity. Egg B hits the blanket but egg A hits the wall instead. Compare the work done on the eggs in reducing their velocities to zero
a. More work was done on A than on B.
b. More work was done on B than on A.
c. The amount of work is the same for both.
d. It is meaningless to compare the amount of work because the forces were so different.
e. Work was done on B, but no work was done on A because the wall did not move.
c
You might also like to view...
A small gas laser of the type used in classrooms may radiate light at a power level of 2.0 mW. If the wavelength of the emitted light is 642. nm, how many photons are emitted per second?
What will be an ideal response?
What do astronomers mean when they refer to "gaps" in the asteroid belt between Mars and Jupiter?
A) There is a large population of asteroids too faint to see called the "gap" asteroids. B) Asteroids seem to avoid certain orbits around the Sun, creating "gaps" in the orbits that asteroids can have. C) Asteroids typically cluster together and this creates "gaps" on the sky. D) There are either pure metal or pure rock asteroids, but no mixtures. Thus there is a "gap" in the composition of asteroids. E) There are very few asteroids with diameters between 1 and 100 kilometers, creating a "gap" in the size distribution.
Provided that in each case heat input is the same, boiling takes place more quickly
1) at sea level. 2) in a valley. 3) in the mountains. This is because 4) increased pressure on the surface of a liquid lowers its boiling point. 5) decreased pressure on the surface of a liquid lowers its boiling point. 6) water always boils quickest at sea level.
In the context of giant stars, helium fusion produces _____ that accumulate in an inert core
A) nitrogen and carbon B) hydrogen and neon C) oxygen and neon D) carbon and oxygen