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Q. A uniform rope of mass 46 g and length 120 cm hangs from a ceiling. (a) Find the speed of a transverse wave on the rope at 39 cm from the lower end. (b) Find the time a transverse wave takes to travel the length of the rope.
Q. A racing car start from rest in the distance and accelerates with a uniform rate of speed 35m/s in 11 sec moving in a circular path of radius 500 m assuming constant tangential acceleration find (1) the tangential acceleration. (2) The centripetal acceleration when the speed is 30 m/s.
The density of free electrons in gold is 5.90 x 10^28 m-3. The resistivity of gold is 2.44 x 10-8 at a temperature of and the temperature coefficient of resistivity is 0.004 ()-1. A gold wire, 1.30mm in diameter and 27cm long, carries a current of..
A 1300kg car drives around a flat 190m diameter circular track at 30 m/s. What is the magnitude and direction of net force on the car.
Describe two different energy alternatives to fossil fuels in detail. Discuss how they work, how they compare with fossil fuels, and their relative advantages and disadvantages.
Heather and Jerry are standing on a bridge 56 above a river. Heather throws a rock straight down with a speed of 15. Jerry, at accurately the same instant of time, throws a rock straight up with the equal speed. Overlook air resistance.
You push with a 20N horizontal force on a 2 kg mass resting on the horizontal surface against a horizontal friction force of 12N. What is the acceleration.
plan a free-body diagram of the wire and bird system. How much tension does the bird produce in the wire? Ignore the weight of the wire.what is the rotational inertia of the wheel.
What lengths of ship three sides according to the observer
A car drives straight off the edge of a cliff that is 58 m high. The police at scene of the accident observed that the point of impact is 121m from the base of cliff. How fast was the car traveling when it went over the cliff.
If the ball is released from rest at a height of 0.78m above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? suppose the ball is a solid sphere of radius 2.3cm and mass 0.14k..
Laser light at 635 falls on a double-slit apparatus with slit separation 6.9 .Find out the separation between the third and fourth bright fringes, as seen on a screen 1.4 from the slits.
A 200, 47.0 cm-diameter turntables rotate on frictionless bearings at 70. A 24.0 block sits at the center of the turntable. A compressed spring shoots the block radically outward along the frictionless groove in the surface of turntable.
A spring with spring constant 12.5 hangs from the ceiling. A 400 ball is attached to the spring and allowed to come to rest. It is then pulled down 6.80 and released. What is the time constant if the ball's amplitude has decreased to 3.90 after 57.0 ..
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