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The 4.00 kg block is attached to a vertical rod by means of two strings. When the system rotates about the axis of the rod, the strings are extended as shown in the diagram and the tension in the upper string is 80.0 N (a) What is the tension in the lower string? (b) How many revolutions per minute does the system make?
A person is holding out his arm horizontally with a 2.50 kilogram weight in his hand. This weight is 60.0 centimeter from the shoulder joint. Estimate the tension in the deltoid muscle
0.45 kg of a metal at 90degreesC is added to 0.40 kg of whater at 20.0degreesC. If the final temp of the mixture is 26.0degreesC, what is the specific heat of the metal
A gas in an engine undergoes a reversible cycle in which 152 Joules of work are done and 419 Joules of heat are supplied by the fuel. what would the high temperature be
a block 20cm wide by 60 cm long balances (symetrically on a similar block which is fixed to the ground. What is the mass of the upper block
In a piston-cylinder assembly, 20 KJ of boundary work is being done on the piston. determine the axial displacement of the piston
In a ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a pendulum. How high will the pendulum swing if the marble has an initial speed of 5.65 m/s
The crank handle moves with a constant tangential speed of 1.20 m/s on its circular path. The rope holding the bucket unwinds without slipping on the barrel of the crank. Find the linear speed with which the bucket moves down the well.
find the period of this oscillation.
A mass attached to a string 51.2 cm long starts from rest and is rotated 33 times in 80.0 s before reaching a final angular speed. Assuming it is constant, what is the magnitude of the angular acceleration?
A 480 kilogram cannon fires a 11 kilogram cannonball with a speed of 200 m/s relative to the muzzle. obtain the speed of the cannonball relative to the earth
Two masses traveling at the same speed v0 collide head on. Nothing is known about collision other than that it is not completely inelastic.
a 0.70 t magnetic field is applied to a paramagnetic gas whose atoms have an intrinsic magnetic dipole moment of 1.4 x
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