A 50.0-kg child is riding on the edge of a merry-go-round that has a mass of 200 kg, a 3.00-m radius, and is spinning at 30.0 rpm. Consider the merry-go-round to be a solid disk with a rotational inertia of 1/2 MR^2. If the child moves to the center of the merry-go-round, what is the new frequency in rpm

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Explain what will happen if decomposers were apsent from a forest ecoysystem.