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In a television picture tube, electrons strike the screen afterbeing accelerated from rest through a potential difference of 33000V. The speeds of the electrons are quite large, and for accurate calculations of the speeds, the effects of special relativity mustbe taken into account. Ignoring such effects, find the electron speed just before the electron strikes the screen.
A tin can is filled with water to a depth of 38cm . A hole 20cm above the bottom of the can produces a stream of water that is directed at an angle of 30? above the horizontal
A block of mass m = 2.00 kg is attached to a spring of force constant k = 415 N/m, Find the speed the block has as it passes through equilibrium
a billiard ball moving at 5.60 ms strikes a stationary ball of the same mass. after the collision the first ball moves
If a human ear canal can be thought of as resembling an organ pipe, closed at one end, that resonates at a fundamental frequency of 2,975 Hz, what is the length of the canal? Use normal body temperature 37°C for your determination of the speed of sou..
A ball is thrown vertically upward with an initial speed of 10m/s from the top of a building, at a height of 25m from the ground. How long does the ball take to reach the ground
An electric fan is running on HIGH. After fan has been running for 1.0 minutes, the LOW button is pushed. What was the initial angular speed of the fan in rev/sec
How much heat must you add to a 10 kg bar of steel to increase its temperature 600 degrees Celsius
The two vectors and in the figure below have equal magnitudes of 11.0 m and their angles are ?1 = 30° and ?2 = 110°. (a) Find the x and y components of their vector sum . (b) Find the magnitude of . (c) Find the angle makes with the positive x axis.
A thin, light wire is wrapped around the rim of a wheel, The wheel rotates without friction about a stationary horizontal axis that passes through the center of the wheel. what is the mass of the wheel
A firefighter on the back of the fire engine hears the sound waves after they are reflected from the wall. What is the frequency of this reflected wave as heard by this firefighter
A 12 g bullet moving horizontally strikes and remains in a 3.0 kg block initially at rest on the edge of table. What was the initial speed of the bullet
Consider two masses that hang from an overhead beam. The first mass of 62.9 kg is attached to the beam using an ideal rope. Find the tension in the lower rope
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