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An air puck of mass 0.250 kg is tied to a string and allowed to revolve in a circle of radius 1.14 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a mass of 1.00 kg is tied to it.
The suspended mass remains in equilibrium while the puck on the tabletop revolves. What is the tension in the string?
What is the force causing the centripetal acceleration of the puck?
What is the speed of the puck?
A dog searching for a bone walks 3.00 m south, then 8.20 m at an angle 30.0° north of east, and finally 14.0 m west. Find out the dog's resultant displacement vector using graphical techniques.
You measure an electric field of 1.37×106N/C at a distance of 0.159m from a point charge. What is the electric flux through the surface of a sphere
An 800 kHz radio signal is detected at a point 9.5 km distant from the transmitter tower. Find the average electromagnetic energy density
The partition is now removed, and the water expands to fill the entire tank. Find out the final temperature of the water and the volume of the tank for a final pressure of 10 kPa.
If the bullet leaves the gun at a speed of 177 m/s, and misses by 1.02 m, at illustrate what angle should the gun be aimed so as to hit the target?
The barricade at the end of a subway line has a large spring designed to compress 2.00 m when stopping a 1.60 ? 105 kg train moving at 0.300 m/s. What speed would the train be going if it only compressed the spring 0.900 m
Bill and Julie are both now on identical trains. Bill's train is moving to the right with velocity (/2)c with respect to Julie's train. How long does Bill measure Julie's train to be
A 139 x 139 timber is used as a short foundation post. It must support a load of 42 kN. Determine the average axial stress in the post
Two air-track gliders of equal mass are initially moving in the same direction along a straight line. What is the speed of the second glider
A perfectly insulated system has work done by it at a rate of 13 W. At what rate is the internal energy of the system changing?
Using Newton's laws find the normal force on the object. Determine the force of kinetic friction on the object
A solenoid (coil) has a radius of 7.2 cm, a length of 31.5 cm, and has 380 turns of wire. A current of 350 mA runs through the coil. Calculate the field strength inside the coil
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