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Q1. A 2.60- metal bar, 1.50 long and having a resistance of 10.0 rests horizontally on conducting wires connecting it to the circuit. The bar is in a uniform, horizontal, 1.60- magnetic field and is not attached to the wires in the circuit.
What is the acceleration of the bar just after the switch S is closed?
Q2. What friction torque is necessary to reduce its angular speed from 90.0 {rm rpm} to 45.0 {rm rpm} in a time interval of 32.0 {rm s}?
You're carrying a 3.6-m-long, 25kg pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35cm from its tip.
What is mass of the ice cube
A contact lens is made of plastic with an index of refraction of 1.36. The lens has an outer radius of curvature of +1.91 cm and an inner radius of curvature of +2.41 cm. What is the focal length of lens?
What is the tension in the string
What direction is white dot on the sensor pointing
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
Different values of the energy
What is the least coating thickness required
Find out an effective coefficient of kinetic friction
Estimate the thickness of lead shielding needed to reduce the exposure rate 2.5 m from a 5.92x10^11 Bq point source of Cs-137 to 1.0 mR/hr.
Use Gauss law to compute amount of charge
Determine the magnitude when the force on the wire
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