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A uniform solid sphere has mass M and radius R.  If these are increased to 2M and 3R, what happens to the sphere’s moment of inertia about a central axis?(A)      increases by a factor of 54(B)      increases by a factor of 6(C)      increases by a factor of 12(D)      increases by a factor of 18

  An object moves according to the velocity – time graph above. What is the distance the object travels from 0 to 6 seconds.

The figure shows a graph of the position x of two cars, C and D, as a function of time t. According to this graph, which statements about these cars must be true? 

Simultaneously from a 10 m platform a ball is thrown horizontally at 5 m/s and a bullet is fired horizontally at 500 m/s. Compare the vertical displacements of the ball and the bullet at the end of 1 s,

A pickup truck is driving a constant velocity when a ball is thrown straight upward from the center of the bed of the truck. If there is no air resistance the ball will land

A spherical planet of uniform density has three times the mass of the Earth and twice the average radius. The magnitude of the gravitational field strength at the surface of the Earth is g.What is the gravitational field strength at the surface of the planet?      (A)      6g(B)      2/3g(C)      3/4g(D)      3/2g

Use the following scenario to answer this question.Barb’s Slo-Smoke is a barbecue stand in Memphis, Tennessee. It operates as a pop-up shop on weekends. Imagine that Barb’s minimum average total cost (ATC) is $8.75 and that its minimum average variable cost (AVC) is $6.75. Assume there are no barriers to entry into or exit from this market.   What is the minimum price at which Barb’s Slo-Smoke will continue to open for business on weekends?

  One possible outcome of promoting competition is

  If the price is greater than both the marginal cost and the average variable cost, what should a perfectly competitive firm do?

Consider the following scenario to answer this question.Lidia’s Pizza is a restaurant located near a college campus. The restaurant attracts two distinct types of customers—college students and local residents. The owners are considering offering a student discount of $2 off a large pizza, which is regularly priced at $12. There are 1,000 students interested in purchasing a large pizza, with a maximum willingness to pay of $10. There are 3,000 local residents interested in purchasing a large pizza, with a maximum willingness to pay of $12. Assume that each customer, at most, will purchase one large pizza and the marginal cost is $6.   What is the difference in the amount of total consumer surplus if Lidia’s offers a large pizza at the single price of $10 instead of the previous single price of $12?