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a body is at equlibrium under the action of three forces.one force is 10n acting due east and one is 5n in the direction 60degree north east.what is the magnitude and direction of the third force.
question a 1.60 kg mass is attached to a light cord that is wrapped around a pulley of radius 6.80 cm which turns with
As is known that the wavelength of yellow light from mercury is 578nm. What is the energy of photoelectron when it leave the surface of photocathode
The average speed of a nitrogen molecule in air is about 669 m/s, and its mass is 4.43×10-26 kg. If it takes 2.66×10-13 s for a nitrogen molecule to hit a wall and rebound by the same speed but moving in the opposite direction, what is the magnitude ..
a 330 kg piano is pushed 3.6 m up a 28 degree incline by three men starting at rest at the bottom of the hill and ending at 41 cm/s. What is the net work done on the piano
What is the magnitude of the couples displacement
The potential difference between the plates of a capacitor is 242V. Midway between the plates; a proton and an electron are free. The electron is released from rest.
An oxygen ion O2 is a distance r = 4.5 x 10-10 m from a H+ ion. How much energy is required to separate them completely
The starter motor of a car engine draws a current of 100A from the battery. The copper wire to the motor is 4.0mm in diameter, How much charge passes through the starter motor
You are riding in an elevator that is traveling down .It travels at vo=6m/s downward. Then, over two seconds, it slows to a stop. What normal force does the person feel as the elevator decelerates? (Mp=75kg) What is the acceleration of the elevator? ..
A glass fiber with a thermal expansion coefficient of 5x10^6 C^-1, an elastic modulus of 72 GPa, Calculate the maximum flaw size that this fiber can tolerate
A 75 kilogram shell is fired with an initial speed of 125 m/s at an angle 55o above horizontal. find how far from the launch point does the lighter fragment land
A speaker generating a tone at 348 Hertz is stationary. A person is moving toward the speaker with a speed of 32 meter per second. Find the frequency of the tone perceived by the person
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