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A simple harmonic wave of amplitude 5.0cm, wavelength 70cm, and frequency 14Hz is propagating along a wire with linear density 40g/m. What's the wave energy per unit length of the wire?
If the car is going 55m/s, how many meters will it travel before it stops? How many meters will it takes to stop car going twice as fast.
A 2000 Hz sound wave passes through a wall with two narrow openings 30 cm apart. If sound travels on average 345 m/s, What is the angle of the first order maximum
Consider a system consisting of two long, concentric solenoids. The larger solenoid has current running in counter clockwise fashion. Find the magnetic field strength inbetween the solenoids. positive number if it is up
A space of 100 cm3 and one of 300 cm3 seperated by a capillary tube, in which a tap is arranged, connected. How big is the pressure in the related areas
If a car moving at 82 takes 300 to stop with uniform acceleration after its brakes is applied, how far will it take to stop under the same conditions if its initial velocity is 41.
A boat is to cross a river on a course directed 20.0° north of east in 10 minutes from point A to point B. The distance from point A to point B is 815m. If the river flows at a speed of 3.0 km/hr, at what angle upstream must the boat be headed,..
What is the magnitude of the apparent weight of a 83 astronaut 4600 from the center of Earth's Moon in a space vehicle moving at constant velocity.
Two stationary positive point charges, charge 1 of magnitude 3.25 nC and charge 2 of magnitude 1.9nC, are separated by the distance of 60 cm. An electron is released from rest at the point midway between the two charges, and it moves along the lin..
What force does the water exert on the man. explain how far does the tongue reach.
A 68kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. She is standing 1.5m from one scale, and, 0.5m from the other. What is the reading on each of the scales.
The sensor in the torso of a crash-test dummy records the magnitude and direction of the net force acting on the dummy. If the dummy is thrown forward with a force of 570N while simultaneously being hit from the side with a force of 2400-N, what f..
A solid (cylindrical) flywheel of mass m and radius r is initally at rest. A force F acts tangentially on its perimeter for a time t. Show that its angular velocity at t = 2Ft/mr . Illustrate what is its angular displacement during that time?
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