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An object has a weight of 0.882 Newton. It is suspended from a scale, which reads 0.735 Newton when the piece is submerged in water. Determine the volume and density of the piece of metal?
A potter's wheel -- a thick stone disk of radius 0.500 m and mass 110 kg -- is freely rotating at 50.0 rev/min. Find the effective coefficient of kinetic friction between the wheel and the rag
An object weighing 347 N in air is immersed in water after being tied to a string connected to a balance. Calculate the density of the object
A cement block accidentally falls from rest from the ledge of a 74.8-m-high building. When the block is 18.4 m above the ground, a man, 2.10 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have ..
a 2.0kg object is attached to a spring k 60.0nm that hangs vertically from the ceiling.the object is displaced 0.050m
An electron is accelerated from rest in a uniform electric field of intensity 420 N/C. Find the following: its velocity and kinetic energy after 3.0 nanoseconds. the distance it travels during the time interval
A woman can read the large print in a newspaper only when it is at a distance of 59 cm or more from her eyes. What should be the refractive power (in diopters) of her glasses
An intergalactic rock star bangs his drum every 1.52 s. A person on earth measures that time between beats is 2.10 s. How fast is the rock star moving relative to the earth.
Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. How much energy is deposited in the beef
question1an airplane starting from airport a flies 300 km east then 305 km at 24.5deg west of north and after that 150
Light enters a substance from air at 30 degrees to the normal. It continues through the substance at 23 degrees to the normal. What would be the critical angle for this substance
Sam is taking his girlfriend Sally out for a ride in his boat. He starts out at rest. He accelerates with an acceleration of 0.168 m/s^2 for 85.6 s. What is the total time the boat moves
An inventor claims to have devised a cyclic engine which exchanges heat with reservoirs at 300 K and 540 K, and which can produce 450 J of work per 1000 J of heat extracted from the hot reservoir. Is his claim feasible.
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