A copper loop is moved through a uniform magnetic field with constant velocity as shown below. What is the direction of the cuurent in the loop at the three regions from top to he botom? Screen Shot 2020-11-23 at 10.00.04 PM(1).png 

A circular loop of wire 0.8 cm in radius carries a current of 30 A. The magnetic field at the center of the loop is

As shown in the figure, a proton with charge +e is traveling in the positive y direction. A uniform electric field is applied in the positive x direction. The total force on the electron can be made zero by applying a magnetic field:Exam3-EM6.PNG 

Two students, sitting on frictionless carts, push against each other. Both are initially at rest. The mass of Susan and her cart is 1.5 M, and the mass of Bob and his cart is M. If Susan pushes Bob so that she recoils with velocity −v, what is the momentum of Bob?Screen Shot 2020-12-01 at 8.08.33 PM.png

A 20 kg block slides from rest at position A down a frictionless incline to position B. The speed of the block at B isExam3-Pic5.PNG  

A 5.0-kg object is pulled along a horizontal surface at a constant speed by a 15-N force acting 20° above the horizontal. How much work is done by the normal force as the object moves 6.0 m?Screen Shot 2021-05-04 at 1.17.20 AM.png

The kinetic energy of a car is 8 ✕ 106 J as it travels along a horizontal road. How much work is required to stop the car in 10 s?

When a ball rises vertically to a height h and returns to its original point of projection, the work done by the gravitational force is

The figure shows a ballistic pendulum in three states. The system (considered to be the ball and the pendulum) will move in such a way that Screen Shot 2021-05-01 at 10.33.09 PM.png  

One hour before the transabdominal pelvis examination,  the patient should ingest ________ ounces of clear fluid.