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Joey weighs 77 lb and sits on a seesaw at a distance of 30 inches from the fulcrum. Jenny weighs 67 lb and sits on the opposite side of the seesaw at a distance of 48 inches from the fulcrum. Mikey weighs 30 lb and wants to play but doesn't know where to sit in order to make the seesaw exactly balance. On whose side and how far away from the fulcrum should he sit?
The portion of the board on the table measures .30m and the portion of the table measures .20m. Explain how far can the center of the box be over the table before the board begins to tilt?
A mass attached to a spring oscillates with an amplitude of 18.0 cm; the spring constant is k= 17.0N/m. Find the value of the mass
What is the effect of thermal insulation on cooling
A cube has sides of length = 0.320 . It is placed with one corner at the origin. The electric field is not uniform but is given by -4.95 2.17 .Find out the electric flux through each of the six cube faces.
q1. the specific heat of lead is 128 jkg0c. 300 grams of lead shot at 1000c is mixed with 200 grams of water at 00c in
A certain species of ionized atoms produces an emission line spectrum according to the Bohr model, Find the next-to-the-longest wavelength in the series of lines
You are at the controls of a particle accelerator, sending a beam of 2.70×107 protons (mass ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unk..
A 4.00-microF capacitor that is initially uncharged is connected in series with a 7.90-k ohm resistor and an emf source with E = 120 V and negligible internal resistance. what is the voltage drop across the resistor
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.50 m/s at an angle of 25.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does..
If 5.0 moles of air is at 0.0 degrees Celsius and 1.0 atm pressure, what is the volume occupied by the gas in m^3
A lead ball is dropped into a lake from a diving board 5.6 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 5 after it is released..
Two coils are close to each other. The first coil carries a current given by I(t) = 4.70 e%u22120.025 0tsin(120%u03C0t), What is the mutual inductance of the coils
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