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A stationary motion detector sends out a sound wave of frequency f= 4.0-Hz towards an approaching car. The wave is reflected off the car and the reflected wave is picked up by the motion detector. When the reflected wave is superimposed on the original wave, it is found that the sum produces a beat frequencyfbeat= 0.049-Hz. Find the speed of the car. You may assume the speed of sound in air to be 340-ms-
Find the Thermal Conductivity of a plate which is infinitely long horizontally
Two carts are involved in an elastic collision. The dynamics cart A with mass 0.550 kg hits the collision cart B with mass 0.550 kg (initially at rest). What is the final kinetic energy of the system
A 12.0 V battery is connected inseries with a resistor and an inductor. The series circuit has atime constant of 597 µs, and themaximum current is 302 mA. What is thevalue of the inductance
in extremely cold weather conditions where the inside thermostat is set to 27 c and the outside temperature is -20 c
assume you throw someone a ball, thereby transporting kinetic energy. Could you consider the motion of the ball to be a mechanical wave pulse.
A solenoid of diameter 2 centimeter and length 15 centimeter develops a 0.3 T magnetic field at a current of 15 Amp. Compute the length of the wire used to make this solenoid
Two skaters, of mass mA = 60kg and mB = 90 kg, are skating toward each other at the same speed v = 4 m/s. What is the speed of skater A following the collision
A converging lens of focal length 7.930cm is 16.6 cm to the left of a diverging lens of focal length -6.0cm. A coin is placed 12.60cm to the left of the converging lens. Determine the location of the coin's final image.
An explosion breaks an object into two pieces, one of which has 2.40 times the mass of the other. If 7300 Joule were released in the explosion, obtain how much kinetic energy did each piece acquire
After the first spring compresses a distance of 32.1 cm, the second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 47.0 cm after first contacting the two-spring system. Find the car's initi..
A power station delivers 530 kW of power at 12,000 V to a factory through wires with total resistance 3.5. How much less power is wasted
an ant crazed by the sun on a hot texas afternoon darts over an xy plane scratched in the dirt. the x and y components
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