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A steel rod (ρ = 7860 kg/m3) has a length of2.40 m. It is bolted at both ends between immobile supports.Initially there is no tension in the rod, because the rod just fitsbetween the supports. Find the tension that develops when the rodloses 3230 J of heat.
A monochromatic beam of light is absorbed by a collection of ground-state hydrogen atoms in such a way that six different wavelengths are observe, what is the shortest wavelength
a satellite has a moment of inertia of I=8000 kgm^2 and rotates at 3 rev per min. what will be the rate of rotation after the panels has been deployed
A block of wood has a mass of 3.87 kg and a density of 584 kg/m3. It is to be loaded with lead so that it will float in water with 0.84 of its volume immersed. What mass of lead is needed if the lead is on top of the wood
A loudspeaker of mass 22 {rm kg} is suspended a distance of h = 1.60 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30 {rm m}.
A car of mass M = 1100 kg traveling at 45 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
A skier slides horizontally along the snow for a distance of 25 m before coming to rest. how fast was the skier going
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. find By how much does the rocket clear the top of the wall
A 0.700-kg ball is on the end of a rope that is 1.30 m in length. The ball and rope are attached to a pole, determine the tangential speed of the ball
At the moment of release, a baseball player has a horizontal velocity component of 39 meters per second, At what angle was the ball released
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
A sinusoidal force with an amplitude of 1.70 N drives the system. At what frequency will the force make the object vibrate with an amplitude of 0.440 m
As a result of the friction between their surfaces, after a while, both disks spin at the similar angular speed. Determine the work done by the frictional torque.
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