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Raindrops make an angle ? with the vertical when viewed through a moving train window (Fig). If the speed of the train is vr, what is the speed of the raindrops in the reference frame of the Earth in which they are assumed to fall vertically?
A Lens maker desires to make a lens of focal length 30 cm. in air. The equipment in the shop is set to make lens faces of 20 cm. What would the focal length of this lens be in water (n=4/3)? What index of refraction must the lens material have to pro..
A precious-stone dealer wishes to find the specific heat capacityof a 0.040-kg gemstone. What is the specific heat capacity of the specimen
A jet of water squirts out horizontally from a very small hole nearthe bottom of a storage tank. what is the water level in the storage tank
Air at 25 oC blows over a heated steel plate with its surface maintained at 200 oC. Calculate the heat loss per hour from the top surface of the plate
If a 350 kg object is moving with a constant velocity of 22 m/s due east then what is the magnitude of the net force acting on the object
An earth satellite revolves in a circular orbit at a height of525 km above the earth's surface. What is the radial accerlation of the satellite
(a)Calculate the altitude ( height above the Earth's surface) of a satellite which is in geosynchronous orbit around the earth's equator ( this means that it orbits the Earth once per day , thereby always staying above the same location on the surfac..
A rifle bullet of mass 8.6 g is fired into a 1.23 kg block where it becomes embedded. what was the initial speed of the bullet
The hydrogen spectrum has a red line at 656 nm and a violet line at434 nm. What angular separation between two spectral lines obtainedwith a diffraction grating that has 4880lines/cm?
A snow maker at a resort pumps 140 kilogram of lake water per minute and sprays it into the air above a ski run. find how much heat does snow making process release each minute
A 109-rad dose of radiation is administered to a cancer patient (mass = 73) kg). how much energy is absorbed
A puck on a frictionless air hockey table has a mass of 0.500 kg and is attached to a cord passing through a hole in the surface, What is the new angular velocity of the puck
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