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Question: A ladder 3 in long and having a mass of 18 kg is placed with the lower end resting on a rough floor and the upper end against a smooth wall at a point 2.4 m above the floor. If the value off = 0.2, will the ladder remain in position? The weight of the ladder is assumed to act at the midpoint of its length.
A farmer measures the distance around a rectangular field. The length of each long side of the rectangle is found to be 29.59 m, What is the total distance around the field
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles, What is the force between the two alpha particles when they are 5.20 10-15 m apart
If a diffraction grating with 525 lines/mm is 0.843 m from a screen and the first order maxima of a particular wavelength of light is 0.252 m from the central maximum (measured along the surface of the screen), what is the diffraction angle? What ..
A large, cylindrical roll of tissue paper of initial radius R lies on a long, horizontal surface with the outside end of the paper nailed to the surface. Determine the speed of the center of mass of the roll
An archer pulls her bow string back 0.380 m by exerting a force that increases uniformly from zero to 219 N. How much work is done in pulling the bow
A Carnot engine is operated between two heat reservoirs at temperatures of 300K and 400K.
On the salt flats of Bonnevile, Utah (latitude ?41?^o N) the British auto racer John Cobb in 1947 became the first man to travel at a speed of 400 mph on land. If he was headed due north at this speed, find the ratio of the magnitude of the Coriolis ..
The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.64 m, Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point
questiona cart of mass m 1.80 kg can roll without friction on a level track. a light string draped over a light
A solenoid has a radius Rs = 3 centimeter, length L = 32 centimeter, and Ns = 125 turns. Compute the magnitude of average induced emf in the coil
A 1050 kgsports car is moving westbound at 13.0 m/s on a level road when it collides with a 6320 kg truck driving east on the same road at 12.0 m/s.
find out the magnitude of the gravitational force exerted by one on the other.
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