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A teeter-totter is made of a 3.200 m long plank with a mass of 60.0 kg, with a fulcrum (pivot point) located 2.100 m from the right end. If a box with a mass of 66.0 kg is placed at the extreme right end of the plank, what mass must be placed at the left end so that the teeter-totter is balanced?
Calculate the induced emf in the conductor and if the total resistance in the conductor is R what is the magnitude of the induced current.
A 4.79 crate is suspended from the end of a short vertical rope of negligible mass. An upward force is applied to the end of rope, and the height of the crate above its initial position is given by + (0.61) what is the magnitude of the force when ..
A 795 kg car moving at 26 m/s brakes to a stop. The brakes contain about 15 kg of iron, that absorbs the energy. What is the increase in temperature of the brakes.
the absolute portential at the exact center of a square is 3.0v when a charge of +Q is located at one of the squares corners. What is the absolute potential at the squares center
find the mass defect (in u) for (a) helium-3 (2He3), which has an atomic mass of 3.016 030 u, and (b) the isotope of hydrogen known as tritium (1T3), which has an atomic mass of 3.016 050 u.
A hunter aims directly at a target (on the same level) 84.2m. If the bullet leaves the gun at a speed of 193 m/s, by how much will it miss the target.
A 71-kg skier is going down a slope oriented 32° above the horizontal. Determine the pressure that each skier exerts on the snow
A test charge of +2*10^-7 C is located 5cm to the right of a charge +1*10^-6 C and 10 cm to the left of a charge -1*10^-6 C. The three charges lie on a straight line
Two metal balls A and B of negligible radius, connected by a taut nonconducting thread of length 1.30 m, are floating at rest on Space Station Freedom between two metal bulkheads.
A parallel combination of a 1.11-?F capacitor and a 2.89-?F one is connected in series to a 4.65-?F capacitor. compute the charge of each capacitor
The first electron has the initial velocity v0 that makes an angle θ=45° with the lower plate and has a magnitude of 7.53×106 m/s. would this electron strike one of the plates? If so, what is the horizontal distance from the left edge? If not enter t..
Suzanne observes two light pulses to be emitted from the same location, but separated in time by 2.70 µs. How fast is Mark moving relative to Suzanne
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