Acar is designed to get its energy from a rotating flywheel in the shape of a uniform, solid disk of radius 0.600 m and mass 540 kg. before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5.10 ✕ 103 rev/min.
(a) find the kinetic energy stored in the flywheel.

13.86 MJ

Explanation:

Since flywheel is a solid disk, its moment of inertia can be calculated with the following formula:

where m = 540kg is the mass and r = 0.6m is the radius

(a) the kinetic energy stored in the flywheel can be calculated

or 13.86 MJ

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

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.