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A bus traveling on a highway at the speed of 35 m/s, blows a horn with a frequency of 1200 Hz. What frequency is heard by a passenger in a car which is approaching the bus from the opposite direction at 45 m/s. (Assume the speed of sound in air is 345 m/s)
An ?-particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.38 106 V, What is the magnitude of the magnetic force on it
Light with a wavelength of 525 nm passes through a single slit that is 35 micro meters wide. On a screen that is 1.5 m away, how far is the second dark spot from the central bright spot
2.0 mol of gas are at 30 degrees C and a pressure of 1.5 atm. How much work must be done on the gas to compress it to one third of its initial volume at constant pressure
What is the maximum speed the car can have at point B for the gravitational force to hold it on the track.
The avarage intensity of solar radiation that falls normally on surface just outside the earth's atmosphere is 1.4 kW/m^2. What radiation pressure is exerted on this surface
A ball with a horizontal speed of 1.25m/s rolls off a bench 1.00m above the floor. How long will it take the ball to hit the floor
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.08 km. What is the direction (relative to due east) of the couple's displacement
A 4.9 kg block is initially at rest on a horizontal frictionlesssurface when a horizontal force in the positive direction ofan x axis is applied to the block. The force isgiven by (x) = (2.8- x2) N, where x is inmeters and the initial position of ..
consider light that is refracted by a prism shaped like an equilateral triangle. the incident ray is parallel with the
A typical American house requires an average 20 kW for heating. Explain how many homes could be heated with the waste heat of this one power plant?
A particle is moving in the xy plane with constant acceleration. At t = 0, it has a velocity of v = (4.00i ! 5.00j) m/s. Determine the acceleration of the particle
A platinum resistance thermometer has resistances of 230.0 omegacap.gif when placed in a 0°C ice bath and 236.8 omegacap.gif, What is the melting point of this substance
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