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An isolated container holding 30 g of hydrogen gas is at 25degrees C. If 1,000 calories were transferred to the gas, what would be the new temperature of the gas?
A fiber optic cable has n=1.4 in the center and n=1.2 for cladding. If a light pulse is incident along the cable's axis, what is the maximum angle the cable can be bent
A 70.0 kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where beam is bolted into place.
The Hall effect can be used to determine the density of mobile electrons in a conductor, Find the density of mobile electrons in the material
A ball of mass 0.30 kg is fired with velocity 160 m/s into the barrel of a spring gun of mass 2.5 kg initially at rest on a frictionless surface. What fraction of the ball's initial kinetic energy is stored in the spring
The center of gravity of a 5 kg lower leg is 18 cm from the knee. When pivoted at the knee and allowed to swing, Find the moment of inertia of the lower leg
On a frictionless air track, a 0.140 kg glider moving at 1.35 m/s to the right collides with and sticks to a stationary 0.245 kg glider. What must be the net momentum of this system after the collision
A spring with a spring constant k of 32 N/m is stretched a distance of 22 cm (0.22 m) from its original unstretched position. What is the increase in potential energy of the spring
A small statue has a height of 3.8 cm and is placed in front of a concave mirror. evaluate the focal length of the mirror
A coil of wire is connected to a galvanometer. When a bar magnet is moved in and out of the coil, the galvanometer records a current. The current results because: pick the best answer? the coil acts like a transformer.
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.60 10-10 T. How much energy does this wave carry through the window
1. an object moves along the x axis according to the equation x3.00t 2 -2.00t3.00 where x is in meters and t is in
A flywheel rotates with an angular speed of 27rev/s . As it is brought to rest with a constant acceleration, it turns 53rev . What is the magnitude of the angular acceleration
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