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A solid block is suspended from a spring scale. When the block is in air, the scale reads 37.1 N, when immersed in water the scale reads 32.2N, and when immersed in oil the scale reads33.0 N.
a) What is the density of the block?
b) What is the density of the oil?
A weather vane initially at rest has a moment of inertia of 0.116 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
189.35 J of energy are transferred to a system in the form of heat while the internal energy decreases by 46.99 J
A 2.8 kg block slides along a frictionless horizontal with a speed of 5.5 m/s. After sliding a distance of 8m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 43 degrees to the horizontal. The acceleration of gravit..
Future space stations will create an artificial gravity by rotating. What rotation period will provide "normal" gravity
The car that hits a concrete barrier and takes 0.3 seconds to stop.
A rubber ball (150g) confined to move in the x direction, bounces elastically back and forth at 9m/s between two walls, Calculate the average pressure on this wall
A small conductive rod of length 1.4 m moves with a constant velocity v=11 m/s in a direction parallel to a long wire carrying a current of 34 A. Calculate the electric potential induced across the rod
What minimum constant acceleration the aircraft requires.
Two blocks are connected by a frictionless pulley as shown. Block A has a mass of 71 kg and block B has a mass of 150 kg. Find the acceleration a of block A (in m/s2)
What is the temperature of the outside air. What are the components of the displacement vector from camp to summit? What is its magnitude? select the x axis east, y axis north, and z axis up.
How much work is done in stretching the spring. Find out the constant acceleration of the car.
A solid cylinder is mounted above the ground with its axis of rotation oriented horizontally. How much of the rope unwinds in this time interval
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