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A uniform rod of length 0.880 m and mass 11.5 kg is balanced on a sharp edge at 0.580 m from the left end. At the left end hangs a mass of 45.0 kg and the right end hangs an unknown mass so that the whole assembly is in equilibrium. Calculate the torque on the center of mass of the rod alone with respect to the pivot point. find the uknown mass as well.
An insulated Thermos contains 123 cm3 of hot coffee at 73 °C. You put a 12.0 g ice cube at its melting point to cool coffee. By how various degrees has your coffee cooled one time the ice has melted and equilibrium is reached? Treat the coffee as tho..
A small spherical insulator of mass 8 x 10 kg and change +0.600 micro Coulomb is hung by a tin wire of negligible mass. A charge of -0.900 micro Coulomb is held 0.150 m away the sphere and straight to the right of it, so the wire makes the angle with..
A feather is dropped on the moon from a height of 1.40 meters. find the time for the feather to fall to the surface of the moon
trumpet creates a sound intensity level of 1.23 x 10^2 dB at a distance of 0.80 m. What is the sound intensity of a trumpet
Illustrate what is the coefficient of static friction between the chair and the floor? What is the coefficient of kinetic friction between the chair and the floor?
A particle rotates in a circle with a centripetal acceleration of 9.81 meters per second squared. what is the new centripetal acceleration in terms of the original value
A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. Find the minimum inductance of the tank circuit
A satellite is placed between the Earth and the Moon, along a straight line that connects their centers of mass. The satellite has an orbital period around the Earth that is the similar as that of the Moon, 27.3 days. How far away from the Earth m..
An airtight box has a removable lid of area 2.0 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.75 x10^5Pa. The inside of the box is completely evacuated. What is the magnitude of force nece..
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. What is the final angular velocity of the top
q1. a car travelling east at 38.0 ms passes a trooper hiding at the roadside. the driver uniformly reduces his speed to
A 10.0g ball of clay traveling east at 1.50m/scollides and sticks together with a 60.0g ball of clay traveling north at 8.50m/s. What is the speed of the resulting ball of clay
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