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A UFO flies directly over a football stadium at a speed of.50c. If the proper length of the field is 100 yards, what field length is measured by the crew of the UFO?
A car drives on a road which begins flat, then goes up and over the top of a hill and then goes down into a dip and back up to level ground.
The amplitude of a lightly damped oscillator decreases by 2.8% during each cycle. What percentage of the mechanical energy of the oscillator is lost in each cycle?
As a 1.00 cm diameter plunger reduces the height of the column of air inside the chamber from 7.00cm down to 0.50cm, the temperature inside increases from 20C to 210C. Determine the air pressure inside the chamber (in atm) after compression if the..
A 5g lead bullet travelling at 370-m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet whilst the other half is transmitted to the tree, what is the increase in t..
At high noon, the Sun delivers 825W to each square meter of a blacktop road. If the hot asphalt loses energy only by radiation, what is its equilibrium temperature.
A ball player hits a home run,and the baseball just clears a wall 8.00 m high located124.0 m fromhome plate. The ball is hit at an angle of 39.1? to the horizontal, andair resistance is negligible.
A disc with a radius of 12cm and a mass of .4kg is free to rotate about an axle through its center. calculate the angular acceleration of the disk
Find the electric energy density between the plates of a 225 μF parallel-plate capacitor. The potentialdifference between the plates is 345 V, and the plate separation is0.300 mm.
The Earth and Moon are separated by about 400 ? 106 m. Suppose Mars is 1.6 1011 m from Earth and forms a right triangle with Earth and the Moon. determine the angular separation of Earth
Illustrate the role of the Sun's differential rotation in the formation of sunspots. Explain (briefly) the 22 year solar cycle, stating its essential features. Estimate the y-component of magnetic force.
You throw a ball with a speed of 25.0 m/s at an angle of 40.0degrees above the horizontal directly toward a wall. How long does the ball take to reach the wall
A square coil, enclosing an area with sides 2.7 cm long, is wrapped with 2,461 turns of wire. What average voltage is induced in the coil
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