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A wire of thickness d = 5 mm is tightly wound 200 times around a cylindrical core to form a solenoid. A current I = 0.1 A is sent through the wire. What is the the magnetic field on the axis of the solenoid?
A 20 liter tank of helium is at a pressure of 172kPa at a temperature of 0 C. What is the speed of the helium atoms in the tank at this new volume
When a battery is connected to the plates of a 2.00-µF capacitor, it stores a charge of 30.0 µC. What is the voltage of the battery
The rotor in a certain electric motor is a flat, rectangular coil with 85 turns of wire and dimensions 2.25 cm by 4.36 cm. The rotor rotates in a uniform magnetic field of 0.800 T. What is the average power of the motor
A potter's wheel having a radius 0.49 m and a moment of inertia 10.9 kg·m2 is rotating freely at 52 rev/min. Find the effective coefficient of kinetic friction between the wheel and the wet rag
A source of sound waves of frequency 0.4 kHz is stationary. What is the observed frequency if the observer moves toward the source
The first two dark fringes on one side of the central maximum in a single-slit diffraction pattern are 1.0 mm apart. What is the slit width
A car moving at 36 m/s passes a stationary police car whose siren has a frequency of 500 hz. What is the change in the frequency (in Hz) heard by an observer
A steel rod has a length of exactly 0.2cm at 30degree centigrade. what will be its length at 60degree centigarde?
q1. a 67 kg man weighs 637 n on the earths surface. how far above the surface of the earth would he have to go to lose
Compute the force of tension or compression
How to compute the average force
An electron of mass 9.1 * 10^-31 kg is moving in the xy-plane; its speed is 2.0 * 10^5 m/s, What are the components of the momentum of the electron
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