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Light in vacuum is incident on the surface of a slab oftransparent material. In the vacuum the beam makes an angle of45.0° with the normal to the surface, while in the slab itmakes an angle of 32.1° with the normal. What is the index of refraction of the transparent material?
A 35kg child slides down a playground slide at aconstant speed, The slide has a height of 4.0mand is 7.4m long, find the magnitude of the kinetic friction force acting on the child
A small galvanometer coil of resistance R = 20 ? and full-scale deflection at 1 mA is connected in series with a 4980 ? resistance to build an analog voltmeter
A charge of 25 nC is uniformly distributed along a circular arc, What is the magnitude of the electric field at the center of the circle along with the arc lies
Here on Earth you hang a mass from a vertical spring and start it oscillating with amplitude 1.9 cm. How long does it take for the mass to make one round trip
When two identical ions are separated by a distance of 8.6×10?10 m, How many electrons are missing from each ion
A hydrogen atom has an angular momentum of 1.055x10^-34 kg.m^2/s. According to the Bohr model, what is the energy (eV) associated with this state
A student is trying to decide what to wear. His bedroom is at 17.0°C. His skin temperature is 36.0°C, Find the net energy loss from his body by radiation in 10.7 min
A long, straight wire lying along the x-axis carries a current, i, flowing in the positive x-direction. A second long, straight wire lies along the y-axis and has a current i in the positive y-direction. What is the magnitude and the direction of the..
A bike rider approaches a hill at aspeed of 8.5 m/s. The combined mass of the bike and the rider is85.0Kg. choose a suitable system. find the initial kinetic energyof the system. the rider coasts up the hill. assuming there is nofriction, at what ..
A big yo-yo (radius 0.2 meters, mass= 20 kg) has a string wrapped about its circumference. If yo-yo falls, how much time does it take to fall 10 m
A man weighing 720 N lies on a bed of nails. Calculate the pressure exerted on the skin by an acupuncture needle of radius 0.100 mm applied with a force of 5.20 N
When a3.0µF capacitor is connected to a generator whose rms output is29V, the current in the circuit is observed to be0.30A. What is the frequency of the source
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