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A 0.139 kg projectile is fired with a velocity of +730 m/s at a 2.14 kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +39.7 m/s. Calculate the velocity with which the projectile exits from the block.
Four 25 kg children are sitting on the edge of a 3 m radius 80kg merry go round that is shaped like a disk. Its frequency is 1/3 Hz, What is the moment of inertia before and after
A closed box is filled with dry ice at a temperature of -88.7 oC, while the outside temperature is 24.4 oC. Find the thermal conductivity of the material from which the box is made
solenoid is formed by winding 23.0 m of insulated silver (resistivity 1.59 x 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping, and insulating coat on the wire is negligibly thin.
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 353 K. evaluate what is the mass of helium present
The electric field everywhere on the surface of a thin, spherical shell of radius 0.785 m is of magnitude 850 N/C, What is the net charge within the sphere's surface
A 500-g mass hangs from a 45.0-cm-long string that is fixed at the top. The mass is pulled slightly aside and allowed to swing back and forth as a pendulum. What is the frequency (in Hz) of the pendulum
A small plastic sphere with a charge of -6.0nC is near another small plastic sphere with a charge of -15nC. what is the distance between the spheres
A spherical source radiates sound uniformly in all directions. At a distance of 13 m, the sound intensity level is 80 dB. What power is radiated by this source
A container of hot water at 80 degrees cools to 79 degrees in 15 seconds while it is placed in a room that is t 20 degrees. Use newton's law of cooling to estimate the time it will take for the container to cool from 50 degrees to 49 degrees.
an automobile tire is pumped up to a gauge pressure of 2.0 x 105 pa when the temperature is 27 degc. what is its gauge
A 30.0kg - goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 3.50×10?2m and period 1.60s.b, What is the maximum acceleration of the finch
How much energy is stored with the electric field among two square plates, 9.3 cm on a side, separated by a 1.5 mm air gap? The charges on the plates are equal and opposite and of magnitude 470 µC. answer in joules
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