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A small flywheel starts from rest and spins up to speed in 10 seconds. During this time it completes a total of 300 revolutions. If we assume the angular acceleration is constant, what is the angular acceleration of the wheel?
In the Bohr model of the hydrogen atom, an electron in the 3rd excited state moves at a speed of 2.43 105 m/s, What is the effective current associated with this orbiting electron
Block A has a mass of 2 kg and rests on a smooth table. What is the acceleration in m/s2 of the two blocks
A toy cork gun contains a spring whose spring constant is 10.02 N/m. The spring is compressed 5.0 cm and then used to propel a 6.00 g cork. The cork, however, sticks to the spring for 1 cm beyond its unstretched length before separation occurs. The m..
1 once the simulation opens click on lsquoshow both for velocity and acceleration at the top of the page. now
A bat flying in complete darkness emits high frequency sound of 100 kHz to locate objects. What is the frequency in which the bat is received
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
A pendulum consists of a ball of mass m=0.5kg attached to a string of length L=0.75m. find the tension in the string at the bottom of the swing
What is the maximum height, y2, if the object is thrown with a speed of v2 = 1.99v1 from the surface of Jupiter's moon Io? The acceleration due to gravity on Io is g2 = 1.79 m/s2. Give the reply as a multiple of y1.
A battery has an internal resistance of 0.60 ?. A number of identical light bulbs, each with a resistance of 9.6 ?, How many bulbs are connected
The block in the figure oscillates sinusoidally between x = +a and x = %u2212a. The coordinate is x(t) = a cos(wt). Calculate the maximum speed
A length of 20-gauge copper wire (of diameter 0.8118 mm) is formed into a circular loop with a radius of 25 cm. Find the average electrical power dissipated in the process
Although both stars probably formed from the same clump of gas, more massive one must have had its birth slowed so that it became a key -sequence star millions of years later than its less massive companion.
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