A small particle with positive charge q=+3.25×10^(−4)C and mass m=5.00×10(−5)kg is moving in a region of uniform electric and magnetic fields. The magnetic field is B=4.00T in the +z-direction. The electric field is also in the +z-direction and has magnitude E=60.0N/C. At time t = 0 the particle is on the y-axis at y=+1.00m and has velocity v = 30.0 m/s in the +x-direction. Neglect gravity.

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

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

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?