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How fast in kilometres per hour, should a sound source be moving toward you to make the observed frequency 5.0% greater than the true frequency? (Suppose that the speed of sound is 340 m/s.)
In the game of billiards, all the balls have approximately the same mass, about 0.17 kg. The cue ball hits a stationary ball and deflects 30° from its original path. What is the speed of the cue ball after the collision
The windshield of a speeding car hits a hovering insect. Consider the time interval from just before the car hits the insect to just after the impact. Which of the following are right.
question a car goes faster and fast backward down a long driveway. the cars velocity changes from -2ms to -9ms in 2
The International Space Station ISS (the mass is approximately 990,000 pounds) orbits the earth at an altitude of approximately 250 miles above the surface of the earth.
An electric motor is rated to have a maximum power output of 0.68 hp. how fast (i.e., at what speed) can it lift the crate
What is the average induced emf in the coil in mV. If he is crossing a river where the current is 1.60 km/h, in what direction should his boat be headed if he wants to reach the point directly opposite his starting point.
When a vertical spring is compressed 5 centimeter, it shoots a ball 50 centimeter straight up into the air. calculate how high would the ball go
you are helping a friend you estimate it takes a force of 1665.5N to draw everything across the level grass at a constant speed. what is the coefficient of friction between the wood board and grass
The distance between between the 1st and 10th minima of a double-slit system is 18 mm, find the wavelength of light generating the interference pattern
Compute the force that acts on a square access hatch at the bottom of the tank that measures 0.25m by 0.25m.
A concrete highway curve of radius 60 m is banked at a 13.0^circ angle. What is the maximum speed with which a 1300 kg rubber-tired car can take this curve without sliding? (Take the static coefficient of friction of rubber on concrete to be 1.0.)
TV channel 3 (VHF) broadcasts at a frequency of 55.0 MHz. TV channel 23 (UHF) broadcasts at a frequency of 548 MHz. Find the ratio (VHF/UHF) of the wavelengths for these channels
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