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Yellow light travels 0.680 times as fast in a certain type of plastic than in a vacuum. What is the index of refraction for yellow light in the plastic?
A compass originally points North; at this location the horizontal component of the Earth's magnetic field has a magnitude of 2e-5 T. A bar magnet is aligned East-West, pointing at the center of the compass.
a 25 kg child on a 2m long swing is released from rest when the ropes of the swing make an angle of 25 degrees with the vertical, neglecting friction, find the childs speed at the lowest position
In an LC circuit, the amplitude of current oscillations is 2A and the amplitude of the voltage oscillation across the capacitor is 3V. If the capacitance is 5muF, what is the inductance?
A laser emits a narrow beam of light. The radius of the beam is 3.9 mm, and the power is 3.6 mW. What is the intensity of the laser beam
The water level in a vertical glass tube 1.300 m long can be adjusted to any position in the tube. What is the greatest depth of water for which there will be resonance in the air in the tube
A spaceship is moving around the Earth in a 500- x 1000km orbit. At apogee, a retrorocket is fired in a direction exactly opposite to the spaceship's velocity vector. How much time elapsed between retrofire and impact
A wave has angular frequency 140 rad/s and wavelength 1.60 m. Calculate the angular wave number
Water has a latent heat of vaporization of 2257 kJ/kg. Steam is used to heat a copper tube of 0.264 kg from 20 degrees C to 100 degrees C. All the heating is due to the heat released from the steam condensing.
A cup of water is heated with a heating coil that delivers 32.75W of heat. In 6.18 minute, the temperature of the water rises by 10.59 oC. What is the mass of the water
an athlete swings a ball connected to the end of a chain in a horizontal circle. the athlete is able to rotate the ball
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. calculate the final speeds of the particles
A child slides down a playground slide; the coefficient of the kinetic friction is uk=0.15, with what speed does she exit the slide
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