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In an experiment on standing waves, a mechanical vibrator drives a string. Both ends of the string are fixed. The distance between the fixed ends is 80.0 cm. Tension in the string is produced by hanging a mass over a pulley. At 60.0 Hz, 5 antinodes are observed on the string. If the mass per unit length of the string is 0.049 kg/m, how much mass is hanging over the pulley.
We accelerate electrons between two parallel plates a few cm apart. We apply 2.05 MV across the plates. Find the momentum of the electron
An arc 14.0 cm in length on the circumfrence of a circle subtends an angle of 126 degrees. What is the radius of the cirlce
If the magnetic field strength is 0.845 T, what is magnitude and direction of the magnetic force on the wire between the poles
q1. the total momentum of a closed system is observed to be 670 kgms east. the system consists of 36 objects that are
A lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.7 m/s2. what is the mass of the lamp
A piece of Nichrome wire has a radius of 5.50 10-4 m. It is used in a laboratory to make a heater that uses 3.00 102 W of power, estimate the necessary length of wire
What are the total displacement and angle of displacement
An electron is released from rest in a uniform electric field of magnitude 2.20 x 10^4 N/C. Calculate the acceleration of the electron
question1a small metal sphere carrying a net charge of -3.00 is held in a stationary position by insulating supports.
A rectangular loop is 1.2 m wide and 0.80 m tall and carries 0.50 A of current clockwise. Find the net force and torque on the rectangular loop
An electron and a proton move on concentric circular path in the plane of your paper, in a magnetic field that is perpendicular to the plane and is oriented towards you. Which particle follows the smaller circle
What is the rate of heat flow into a system whose internal energy is increasing at the rate of 45 W, given that the system is doing work at the rate of 165 W
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