The charge of an electron is 1.60 × 10−19 C. A proton is moving along the positive x-axis with a speed of 1.50 × 105 m/s in a magnetic field of 2.00 T that is oriented along the positive y-axis.
b. Find the direction and magnitude of the electromagnetic force on the proton.

c. What is the force when the proton moves along the y-axis?

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final