Use the worked example above to help you solve this problem. A proton moves with a speed of 1.03 x 105 m/s through Earth's magnetic field, which has a value of 55.1 µT at a particular location. When the proton moves eastward, the magnetic force acting on it is directed straight upward, and when it moves northward, no magnetic force acts on it. (a) What is the direction of the magnetic field? ---Select-- C (b) What is the strength of the magnetic force when the proton moves eastward? N (c) Calculate the gravitational force on the proton and compare it with the magnetic force. Compare it also with the electric force if there were an electric field with magnitude E = 1.50 x 10² N/C at that location, a common value at Earth's surface. Note that the mass of the proton is 1.67 x 10-27 kg. N F grav elec = N D.Suppose an electron is moving due west in the same magnetic field as in the example at a speed of 2.87 x 105 m/s. Find the magnitude and direction of the magnetic force on the electron. F = N Direction -- C

A pair of point charges, q=+8.50 C and g'= -5.50 μC, are moving as shown in the figure (Figure 1) with speads = 9.50-104 m/s and v' = 7.00-10 m/s. The charges are at the locations shown in the figure. Figure 1.300 m 0 0.400 m ▸ Part A What is the magnitude of the magnetic field produced at the origin? Express your answer in teslas. 15] ΑΣΦ ? + √x √x XX IXT 10 B- 1.094 10- Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B Part C What is the magnitude of the magnetic force that q' exerts on g? Express your answer in newtons. ΤΕΙ ΑΣΦ ? P= Submit Request Answe N

At a certain location, the horizontal component of the earth's magnetic field is 2.1 × 10-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the proton. Number i Units

A proton with a kinetic energy of 4.8x10-16J moves perpendicular to a magnetic field of 0.36 T. Part A What is the radius of its circular path? Express your answer using two significant figures. V ΑΣΦ ? cm Submit Request Answer

The copper sheet shown below is partially in a magnetic field. What happens when it is pulled to the right (select all that apply)? O The copper sheet feels an opposing force to the left Copper is a nonmagnetic material, so it is unaffected by the magnetic field The copper sheet feels a net torque in the direction parallel to its direction of motion A clockwise electric current flows in the copper sheet

a) The figure shows the motion of a positive particle moving in a magnetic field, similar to what was observed in our lab. The force on the particle and its velocity are indicated in the figure. What is the direction of the magnetic field? F b) In what direction should you move the magnet so as to induce the counterclockwise current shown? Draw an arrow indicating this direction. counterclockwise induced current v =? N S