Physics

In the attached figure, ABCD is a conducting wire. A conducting bar EF is laid on top of the wire and slid toward BC with a speed of .030 m/sec. A constant magnetic field B of 2.0*10^(-5)Tesla points out of the paper. The length of BC is 1.5m and the distance of the bar from EF is initially 2.0m. 1)what is the initial magne ...continues

Electric dipole of two opposite point charges

An electric dipole is constructed out of two point charges of equal magnitude q and opposite signs, separated by a distance d, as shown in the attached diagram. Find the electric field at the point P. (the two charges are each a distance r from point P).

Old exam for physics

please complete the attached physics exam. This exam will be used for study purposes so FULL explanations will be greatly appreciated.

review problems

These are some review problems posted by our instructor. I would like to know if my results are correct. please solve with short explanation if possible. The first part of the first problem states that each wire is at a distance r = 72.4 cm from the other two, and each wire carries a current of magnitude i = 5.76 A in the di ...continues

magnetic field problem

would like to know how to solve it. The magnetic field problem includes #'s 7,8,9,10,11

Solenoid Problem

A Solenoid has 704 turns, a length of 33.3 cm, a radius of 3.85 cm. If it carries 5.61 A, calculate the magnetic field at an axial point located 20.2 cm from the center. Answer in units of T.

Ultrasoound waves/ Degassed water

When doing ultrasound work and the sound waves must pass through water, it is important to used gegassed (outgassed) water. This can be done by one of several methods. One is to make the pressure above the water sample as low as possible, i.e., a partial vacuum. The other is to boil the water at normal pressures. Discuss the phy ...continues

Desktop-sized proton accelerator

Your company is designing a desk-top sized proton accelerator, using a 500MN/C superconducting magnet to hold the protons in a circular path. Estimate the maximum kinetic energy that your accelerator can give protons. Express your answer in the conventional particle physics unit of electron-volts, where 1 eV=1.6*10^-19J. For ...continues

velocity selector

velocity selector

Mass Spectrometer

A mass spectrometer is a device that uses a magnetic field to sort atoms by mass. In this device, atoms whose masses are to be determined are ionized by stripping off one electron. They are then sent through a velocity selector that selects ions only with specific speed V, and these ions are sent into a region of space filled ...continues