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The two wires of length 2 m are 3 mm apart and carry a current of 9 A dc. Calculate the force between these wires.
Two parallel plates are held at potentials of +229V and ?59V, An electron is initially placed halfway between the plates, Find its kinetic energy when it hits the positive plate
A machine does work at a rate given by Pct^2 , where c = 15W/s^2 and t is time. Find the work done by the machine between 15s and 20s? huh
Most of the blackholes observed by astronomers have masses equal to few solar masses (the result of the death of a high mass star) or have masses equal to several million solar masses. Calculate the Schwarzschild radius of a blackhole
As the captain of the scientific team sent to Planet Physics, one of your tasks is to measure g. You have a long, thin wire labeled 1.41g/m and a 1.30kg weight. You have your accurate space cadet chronometer but, unfortunately, you seem to have fo..
The catapult on an aircraft carrier can take an aircraft from 0 to 197 mph ( the launch speed) in 5 Seconds, at which time the aircraft launches
A 480HZ sound wave in 20 centigrade air propagates into the water of a swimming pool. Assume that the wave's speed in the water is 1480m/s. What is the wave's frequency in the water? What is the wave's wavelength in the water?
A cannonball sits on top of a 10 meter cliff and is fired at a 10 degree angle with an initial velocity of 50 m/s. How long is the cannonball in the air
A U tube is filled with water, and the two arms are capped. The tube is cylindrical, and the right arm has twice the radius of the left arm. The caps have negligible mass, are watertight, and can freely slide up and down tube.
A shell is fired at an angle of 20 degree above the horizontal at a velocity of 200 m/s a) what is the range. b) What is its velocity at highest point of the trajectory.
Walk 10 miles in the direction 54 degrees east of due north. Then walk 4 miles in the direction 23 degrees south of due east. How far will you be from your starting point?
At what depth under water does the pressure increase by 100,000 Pa? The Earth rotates with a period of one day. What is its rotational speed in revolutions per minute? The Earth rotates with a period of one day. What is its rotational speed in revolu..
A 0.020-kg bullet is shot horizontally and collides with a 1.35-kg block of wood. The bullet embeds in the block, what was the original speed of the bullet
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