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The top of a tower much like the leaning bell tower at Pisa, Italy, moves toward the south at an average rate of 1.2 mm/y. The tower is 48 meter tall. In radians per second, find the average angular speed of the tower's top about its base? rad/s
Many communications satellites orbit the earth in geostationary orbits. (They appear to remain in the same positions in the sky for observers on the earth's surface.) If such a satellite orbits at a height of 40,000 km, estimation the time delay in a..
You and a friend are sitting in the bleachers of a major league baseball park,132m from home plate on a day when the temperature is 20° C. How much later does the other person hear the sound
A car fuel tank is filled to the brim with 45 L (12 gal) of gasoline at 10 °C. Find how much gasoline overflows from the tank as the result of the expansion
A gasoline engine has a power output of 185kW (about 248hp ). Its thermal efficiency is 28.5%. How much heat is discarded by the engine per second
A drinking straw 20 cm long and 3.0 mm in diameter stands vertically in a cup of juice 8.0 cm in diameter. What is the greatest height from which the child could drink
Two parellel plates of area 100 cm^2 are given charges ofequal magnitudes 8.9 X 10^ -7 C but opposite signs. Calculate the dielectric constant of the material
A ray of light passing through air is incident on a piece of quartz (n=1.46) at an angle of 25 degrees. Calculate the deviation d of the ray as it emerges back into the air
A symmetric double convex lens with a focal length of 25.0cm is to be made from glass with an index of refraction of 1.53. What should be the radius of curvature for each surface
A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.30. What is the frictional force on the box
A laser beam is incident on two slits 0.100 mm apart and a screen is placed 4 m from the slits. what is the wavelength of the laser light
Find out the intensity if the frequency is increased to 2.90 kHz while constant displacement amplitude is maintained.
A 100-watt light bulb is brighter than a 25-watt light bulb because it uses more power. Which bulb has a greater resistance, the 100-watt or the 25-watt light bulb
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