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In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 33 500 V. The speeds of the electrons are quite large, and for accurate calculations of the speeds, the effects of special relativity must be taken into account. Ignoring such effects, find the electron speed just before the electron strikes the screen.
The top-most tooth is protruding slightly, and the tension in the wire exerts two forces, what is the magnitude of the net force exerted on the tooth
A charge 2q is located at the origin. A charge -3q is located at x = d, y = 0, z = 0. Where is the electric field zero
rotates to provide an "artificial gravity" of 3.10 m/s2 for persons who walk around on the inner wall of the outer rim. Find out the rate of the wheel's rotation in revolutions per minute that will produce this effect.
A sperical source ratiates sound uniformly in all directions. At a distance of 18m, the sound intensity level is 100dB. what power is radiated by this source
Three radio-equipped plumbing vans are broadcasting on the samefrequency f0. Van 1 is moving east of van 2 with thespeed v, What is the frequency of each van as received by theothers
With what minimum speed should you toss a 140g ball straight up to hit the 11.0m-high roof of the gymnasium if you release the ball 1.30m above the ground? Resolve this problem using energy.
A 44.20 cm diameter disk rotates with a constant angular acceleration of 2.84 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at t..
How many times more light is gathered by a single Keck telescope, whose mirror is equivalent in area to that of a circle 10 m in diameter, than by the Palomar Hale telescope, whose mirror is 5 m in diameter, in any given interval of time?
A car with a mass of 950 kg is moving to the right with a constant speed of 1.69 m/s, What is the total force on the car if it is moving to the left
Suppose a patient having an MRI is immersed in a 3.0 T field along the axis of his body. He then quickly tips his head to the side, toward his right shoulder, tipping his head by 30 degrees in the rather short time of 0.15 s.
A 1.00 cm object is 60.0 cm in front of a diverging lens that has a -30.0 cm focal length. Find the image position and height. Is the image real or virtual? Is the image upright or inverted
marvin the martian has run out of gas and is in a circular motion around the sun. His UFO is m=500kg and he is orbiting with a radius of 3 x 10^8 m. What is Marvins angualr velocity around the sun
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