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The electrons in a television picture tube are typically accelerated to an energy of 10,000 e V. Calculate the momentum of such an electron, and then use the de. Broglie relation to calculate its wavelength.
to make ice a freezer that is a reverse carnot engine extracts 45 kj as heat at -14degc during each cycle with
A circuit consists of a coil that has a self-inductance equal to 4.80 mH and an internal resistance equal to 13.0 Ω, an ideal 15.0 V battery, and an open switch--all associated in series. At t = 0 the switch is closed. Discover the time when the rate..
A gymnast of mass 55.0kg hangs from a vertical rope attached to the ceiling. Calculate the tension T in the rope if the gymnast hangs motionless on the rope
A 10 kilogram block is placed on an ideal vertical spring that has been compressed 20 centimeter from its equilibrium length. Determine the speed of the block as it leaves the spring
A 58-kg water skier is being pulled by a nylon tow rope that is attached to a boat. What is the change in the length of the rope when the skier has an acceleration whose magnitude is 0.90 m/s2
A jumper in the long-jump goes into the jump with a speed of 12m/s at an angle of 20 deg above the horizontal. How long is the jumper in the air
A uranium atom is ionized seven times, losing seven electrons in the process. what is the strength of the magnetic field
A bullet is fired from a gun whose barrel is 0.600 m long. The bullets mass is 5.00 g and its velocity is 300m/s when it leaves the gun's muzzle. what was the average force acting on the bullet
A boat is tied to a dock by four ropes. Two ropes, with a tension of 55 N each, are at right angles to the dock. What is the magnitude of the sum of these forces
A uniform magnetic field, B = 0.0002 T, exists in the +x-direction. A proton (q = +e) shoots through the field in the +ydirection with a speed of 5 x 106 m/s. Find the magnitude and direction of the force on the proton.
Suppose that a sprinter is capable of an acceleration of 4 m/s2 over the first 14 m, and from then on runs at top speed. Determine what is her time for the 100 m sprint
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
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