Gravitational potential energy (1) - masss (kg) x gravitational field strength (N/kg) x height (m) 1. Calculate the gravitational potential energy of the following masses on top of Trump tower which has a mass
of 202 m (g= 9.81 N/kg)
a) 100 kg
b) 90 kg
c) 45 kg
d) 58 kg
e) 1g
1) 1000 g
h) 1998
1) 1.5 kg
g) 100 g

Actually Welcome to the Concept of the Potential Energy.

Here lets calculate it one by one ;-

1.) P = mgh ==> 100*9.81*202===> 198162 Joules

2.) P = mgh ==> 90*9.81*202 ==> 178345.8 Joules

3.) P = mgh ===> 45*9.81*202 ===> 89172.9 Joules

4.) P = mgh ===> 58*9.81*202 ===> 114933.96 Joules

5.) P = mgh ===> 0.001*9.81*202 ===> 1.981 Joules

6.) P = mgh ===> 1.00*9.81*202 ===> 1981.62 Joules

7.) P = mgh ===> 1.998*9.81*202 ==> 3959.27 Joules

8.) P = mgh ===> 1.5*9.81*202 ===> 2971.43 Joules

9.) P = mgh ===> 0.1*9.81*202 ===> 198.162 Joules.

Above we calculated the potential energy for every mass given above.

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.