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A bat at rest sends out ultrasonic sound waves at 46.9kHz and receives them returned from an object moving directly away from it at 21.6m/s. What is the received sound frequency?
The two spheres are then connected by a thin conducting wire, What is the charge on the first sphere after the two spheres are connected by the wire
find the work done to move the particle from x = 0 to x = 10.0 m by graphically determining the area under the F versus x graph. (Do this on paper. Your instructor may ask you to turn in this graph.)
What is the free-fall acceleration toward the sun at the distance of the earth's orbit? [The mean distance the earth is from the sun in its orbit is 1.50x10^11 m
A spring with an unstrained length of 0.074 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling, What is the magnitude of the external electric field
Two particles of masses m1 and m2 are joined by a massless spring of natural length L and force constant k. Find the positions of the two masses at any subsequent time t
A 3.9kg ball with a velocity of 3.2m/s in the +x-direction collides head-on elastically with a stationary 1.5kg ball. What is the speed of the first ball after the collision
In addition, snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted. determine the work function of potassium
Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 9.97 cubic meter of water in kg
Calculate the velocity of a 50.0g steel ball shot from a slingshot with a 120N/m spring constant when pulled back 35cm and released
A sailor strikes the side of his ship just below the surface of the sea. He hears echo of the wave reflected from the ocean floor directly below 9 s later. How deep is the ocean at this point.
Assume you weight is 128 lb. Compute your weight in N. Compute your mass in kg. Compute your mass in slugs
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