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A ball moving with speed v collides with a horizontal smooth surface at an angle ? with normal to surface. If coefficient of restitution is ‘e' , then find velocity after rebounce making same angle theta with the normal.
Two objects are connected by a light string that passes over a frictionless pulley, Find the magnitude of the accelerations of the objects
Three point charges, -4.9 x 10-9 C, -9.7 x 10-9 C, and +7.1 x 10-9 C, are fixed at different positions on a circle. What is the radius of the circle
A beam of gamma rays from a distant galaxy is observed through two polarizing filters whose transmission axis is at a 45 degree angle relative to each other here on earth. What is the intensity of the output beam
You have a beach ball which has a radius of 11 cm and a mass of 0.3 kg. You have a lead ball which has the same radius but has a mass of 120 kg. What is the buoyancy force felt by the beach ball
Throughout three hours one winter afternoon, when outside temperature was 9° C, a house heated by electricity was kept at 21° C with the expenditure of 46kwh (kilowatt•hours) of electric energy.
A sound pulse has a power of 893.1 watts. It is radiating outwards from a point and at the time of observation is a radius of 7861.6 m from that point
You are lowering two boxes, one on top of the other, down the ramp by pulling on a rope parallel to the surface of the ramp. find the magnitude of the friction force on the upper box
The current in a 100 watt lightbulb is 0.740 A. The filament inside the bulb is .230 mm in diameter
school yard teeter-totter with a total length of 5.50 and a mass of 36.00 is pivoted at its center. A 19 child sits on one end of the teeter-totter. Where should a parent push vertically downward with a force of 250 in order to hold the teeter-tot..
The sport with the fastest moving ball is jai alai, where measured speeds have reached 303km/h. If a professional jai alai player faces a ball at that speed and involuntarily blinks, he blacks out the scene for 100ms. How far does ball move throughou..
Physics Question: A jogger runs directly east for 5 km, then turns and goes northwest for 9 km. He then travels directly south for 2 km
A viscous fluid is flowing through two horizontal pipes. They have the same length, although the radius of one pipe is three times as large as the other. what is the volume flow rate QB in the wider pipe
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