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Merry-go-round is at rest before a kid pushes it therefore that it rotates with a constant angular acceleration for 34 second. When the child stops pushing, the merry-go-round is rotating at 1.20 rad/s. Obtain how many revolutions did the kid make around the merry-go-round while he was pushing it?
A wire of resistance 6.0 ohm is connected to a battery whose emf is 4.0 V and whose internal resistance is 1.0 ohm. Find how much energy is transferred from chemical to electrical form in 2.0 minute
When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). find the mass of the ball
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m, What is the weight of the bananas in newtons
A defiblirator is used during a heart attact to restore theheart to its normal beating ppattern. How much charge moves during this time
transverse waves with a speed of 52.0 ms are to be produced on a stretched string. a 5.40-m length of string with a
A resistance R and a 3.4-H inductance are in series across a 60-Hz ac voltage. The voltage across the resistor is 34 V and the voltage across the inductor is 39 V. Assume that all voltages in this problem are rms voltages. (a) What is the resistance ..
a protozoan swims with a speed of 3.92 mms. how much time in s would it take this protozoan to swim directly across a
A lead fishing weight with a mass of 57.0g absorbs 146cal of heat. If its primary temperature is 50 C, what is its final temperature.
A 220g baseball is pitched at 25m/s spinning at 43rad/s. What fraction of its kinetic energy is rotational
A boat is pulled by two locomotives through a canal of length 2.04 km, What is the net work done on the boat by the two locomotives
The energy of sunlight hitting the earth is about 1400 W/m^2 (where 1 W= 1 J/s) in mid day. Given that the sun is about 150 million km from the earth, estimate the total output of the sun
A proton is projected perpendicularly into a magnetic field that has a magnitude of 0.50 T . The field is then adjusted so that an electron will follow a circular path of the same radius when it is projected perpendicularly into the field with th..
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