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Find what current flows through a 2.50 centimeter diameter rod of pure silicon that is 22.0 centimeter long, when 1000 Volt is applied to it? (Such a rod may be used to make nuclear particle detectors, for example.) The resistivity of pure silicon is 2.30 103 Ω •m.
At an accident scene on a level road, investigators measure a car's skid mark to be 68-m long. It was a rainy day and the coefficient of friction was estimated to be 0.38. Make use of these data to determine out the speed of the car when the drive..
A rod of length L and charge Q is placed right next to another identical rod with charge -Q. What is the direction of the electric field at point P on the +y axis
A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 cm and released. If the ball makes 55 oscillations in 20 s, what are its mass and maximum speed
derive an equation for centripetal acceleration starting with a particle moving with constant speed in a circle of
An object that is 37 cm in front of a convex mirror has an imagelocated 25 cm behind the mirror. How far behind the mirror is the image located when the object is 30 cm in front of the mirror?
Consider water flowing down a mountain. It moves purely as of gravity. Now consider that water has a layer of oil on top of it. How is the oil going to change the speed of water flowing down the mountain?
A bat moving with a speed of 3.15{\rm m/s} and emitting sound of 39.0{\rm kHz}, What frequency is heard by the moth
A box is sliding across a board that make an angle of 15 degrees with the horizontal. What is the acceleration of the box
A car moving at 30.0 m/s is approaching a factory whistle that has a frequency of 500 Hz. find the apparent frequency of the whistle as heard by the driver
q1. an airtight box has a removable lid of area 1.00 10-2 m2 and negligible weight. the box is taken up a mountain
A triangular glass prism with apex angle Φ has index of refraction n. Determine the smallest angle of incidence θ1 for which a light ray can emerge from the other side
A boy drags his 8.00 kg sled at constant speed up a 10.0 degree hill. He does so by pulling with a 40.0-N force on a massless rope attached to the sled. find the coefficient of kinetic friction between sled and snow
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