Let r be the distance between the cylinder and the center of the turntable. now assume that the cylinder is moved to a new location r/2 from the center of the turntable. which of the following statements accurately describe the motion of the cylinder at the new location?
check all that apply.
a. the speed of the cylinder has decreased.
b. the speed of the cylinder has increased.
c. the magnitude of the acceleration of the cylinder has decreased.
d. the magnitude of the acceleration of the cylinder has increased.
e. the speed and acceleration of the cylinder have not changed.

a. The speed of the cylinder has decreased.

c. The magnitude of the acceleration of the cylinder has decreased.

Explanation:

Lets take angular speed of the turn table = ω

Linear speed at distance r from center of turn table

V=  ω r

The linear speed of the cylinder at distance R

r=R

V= ω R

When the distance become R/2 ,then new linear speed

r=R/2

V'= ω R/2

V'= ω R/2 = V/2

V'=V/2

Therefore speed of the cylinder is decreases.

The radial acceleration a

a= ω² r

When r decrease then the magnitude of the cylinder will decreases.

Therefore option a and c is correct.

i think the answer would be b

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.