The centripetal force of an object of mass m is given by f(r)=mv2r, where v is the speed of rotation and r is the distance from the center of rotation. find the rate of change of centripetal force with respect to r of an object with mass 1000 kilograms, velocity of 13.89m/s and a distance from the center of rotation of 200 meters. do not include units in your answer, and round to the nearest thousandt

Explanation:

As we know that the centripetal force is given as

now we will have to find the rate of change in force with respect to its radial distance

so we have

so we have

m = 1000 kg

v = 13.89 m/s

r = 200 m

now we have

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

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.