A. how much work is done when a 185g tomato is lifted 15.0m? b. the tomato is dropped. what is the velocity, v, of the tomato when it hits the ground? assume 82.1 % of the work done in part a is transferred to kinetic energy, e, by the time the tomato hits the ground.

v = 18.92 m/s

Explanation:

given,

mass of the tomato = 185 g = 0.185 Kg

height of the lift, h = 15 m

work done by lifting the tomato will be equal to the potential energy gained by the tomato.

W = PE

W = m g h

W = 0.185 x 9.8 x 15

W = 27.195 J

now,

E = 82.1 % of KE

  0.07594 v² = 27.195

      v² = 358.099

      v = 18.92 m/s

speed of the tomato at which it hits ground is equal to 18.92 m/s.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.