7in an experiment, six people at different places around the earth drop an apple at the same time. which apples will fall to the earth?
a. only apples u, v, y and z will fall to the earth.
b. all of the apples will fall to the earth.
c. only apples u and z will fall to the earth.
d. only apple u will fall to the earth.

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm

If a balloon is taken outside on a very cold day, what will occur?