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A steel wire of length 1.92m with circular cross section must stretch no more than 0.210cm when a tensile (stretching) force of 380N is applied to each end of the wire. What minimum diameter is required for the wire? Take Youngs modulus for steel to be Y=2*10^11 Pa.
What is the maximum height, y2, if the object is thrown with a speed of v2 = 1.99v1 from the surface of Jupiter's moon Io? The acceleration due to gravity on Io is g2 = 1.79 m/s2. Give the reply as a multiple of y1.
A slingshot will shoot a 10-g pebble 22.0 mstraight up. How much potential energy is stored in the slingshot's rubber band
find frequencies of vibration of the piano wire. Car 1 has 3 times the mass of car 2, but only 0.5 as much kinetic energy. What is the ratio between the speeds of the two cars (v1/v2)? You must type your answer as a numerical value.
The focal length of the objective and eyepiece in a compound microscope are 0.8 cm and 2.5 cm, respectively. What is the total magnification
a thin rod, of length L = 1.9m and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball is attached to the other end. find the initial height of the ball
A tennis ball with a speed of 13.20 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 10.36m/s.
A child and sled with a combined mass of 55.20 kg slide down a frictionless hill that is 7.84 m high at an angle of 26o from horizontal. The acceleration of gravity is 9.80 m/s2. If the sled starts from rest, what is its speed at the bottom of hil..
A series RCL circuit includes a resistance of 271 ?, an inductive reactance of 661 ?, and a capacitive reactance of 425 ?. What is the voltage of the generator
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 62.12 diopters, How far is the blackboard from her eyes
Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly, sphere C is touched to sphere B and separated from it. Explain how much charge ends up on sphere C?
When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 10.00 cm long and 3.00 mm in diameter is compressed an average of 65.0 µm by a 0.415 kg hammer during a 1.20 ms collision
two blocks of mass m1 and m2 approach each other on a horizontal table with the same constant speed, Vo, as measured by a laboratory observer. Determine the ratio of the two masses m1/m2
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