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The speed of a wave on a string is 30 m/s. The string is 3.0 meter long and fixed at both ends. If the mass of the string is 60 g, determine what the tension in string?
A transformer has 100 turns in its primary windings and 500 turns in its secondary winding. calculate the secondary voltage and current
A portion of Nichrome wire of radius 3.95 mm is to be used in winding a heating coil. If the coil must draw a current of 9.70 A when a voltage of 120 V is applied across its ends, find the following. (Take the resistivity of nichrome to be 1.50 10..
A car is parked at the top of a 52m -high hill. It slips out of gear and rolls down the hill. How fast will it be going at the bottom
When a body of mass m is moving with a speed v, it has kinetic energy associated with its motion. by what percentage does the kinetic energy increase
A 45-m length of wire is stretched horizontally among two vertical posts. The wire carries a current of 82 A and experiences a magnetic force of 0.15 N. Discover the magnitude of the earth's magnetic field at the location of the wire, assuming the fi..
A toy cannon uses a spring to project a 5.24 g soft rubber ball. The spring is originally compressed by 4.96 cm and has a force steady of 8.03 N/m.
a uniform stick 1.5 meters long With a massive 220 kg is pivoted at its center a 3.9 kg bullet is shot through the stick midway between the pivot, What is the angular speed of the spinning stick
At t = 0 a grinding wheel has an angular velocity of 25.0 rad/s. It has a constant angular acceleration of 21.0 rad/s2 until a circuit breaker trips at t = 1.81 s. What was its acceleration as it slowed down
a wooden block with a mass of 0.2-kg rests at the edge of a 1.0-m high table. a 3-g bullet is fired into the block from
Velocity and time for the moving particle.
An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. Determine how far must he now travel to reach base camp
A laser beam is incident on two slits 0.100 mm apart and a screen is placed 4 m from the slits. what is the wavelength of the laser light
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