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A sample of helium-4 behaves as an ideal gas as it isheated at constant pressure from 294 K to 404 K. If 33 J of work isdone by the gas during this process, what is the mass of helium present?
An Argon ion laser has a gain bandwidth of 2 GHz. Find the number of standing wave cavity modes within the gain bandwidth of the argon ion laser
A 44.20 cm diameter disk rotates with a constant angular acceleration of 2.84 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at t..
A marathon runner is moving along the road at 1.0 m/s in still air that is at a temperature of 34.0°C. What is the rate of convective heat loss from his skin
The first car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 10m/s, What were the original speeds of the two cars
What is the Acceleration of an object moving on a circular track
A house is 90.0 ft long and 43 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house
A model rocket is launched straight upward with the initial speed of 70m/s. It accelerates with a constant upward acceleration of 3 m/s2 until its engines stop at an altitude of 180 m.
The blue line of the hydrogen emission spectrum has a wavelength of 433.9 nm. Calculate the energy of one photon of this light
A 755N diver drops from a board 10m above the water's surface. Find out the diver's speed 5m above the water's surface. Then find the diver's speed just before striking the water.
A 24-kg boy stands 5 m from the center of a frictionless playground merry-go-round, Calculate the speed of the boy relative to the surface of the merry-go-round
A power supply with internal resistance of 8 ? applies a voltage of 26 V. If a load resistor of 52 ? is in series with the power supply, what is the current going through the circuit
A hot-air balloonist, rising vertically with a constant velocity of magnitude v= 5.00 m/s, releases a sandbag at an instant when the balloon is a height h= 40.0 m above the ground. Compute the position of the sandbag at a time 1.50 s after its rele..
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