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A 1.80 kilograms box and a 3.80 kilogram box on a perfectly smooth horizontal floor have a spring of force constant 250 N/m compressed between them. The initial compression of the spring is 6 centimeter.
a) Obtain the acceleration of 1.80 kilogram box the instant after they are released.
b) Obtain the acceleration of 3.80 kilogram box the instant after they are released.
A -11.0kg bucket is lowered vertically by a rope in which there is 163N of tension at a given instant, What is the acceleration of the bucket
Human skin is most sensitive to ultraviolet light of approximate wavelength 300 nm. The threshold for sunburn occurs when 1 cm2 of skin absorbs about 1015 of these UV photons over an interval of several hours or less. How much energy is absorbed
The largest fusion bomb ever detonated (called the Tsar Bomba) was tested by the Soviet Union in 1961. If this bomb used the deuterium-deuterium fusion reaction, how many kilograms of deuterium were required
A parallel plate capacitor is connected to a battery. The space between the plates is filled with air. Find the electric field inside the dielectric
A certain wire has a resistance of 140 Ω. What is the resistance of a second wire, made of the same material, that is 1/3 as long and has 1/5 the diameter? (answer in ohms)
In a mass spectrometer, a singly ionized 24Mg ion has a mass equal to 3.983 10-26 kg and is accelerated through a 2.60-kV potential difference. Find the radius of curvature of the ion's orbit
Two blocks, each have a mass of 10kg are being accelerate across a surface that has a coefficient of friction of 0.2 by applied force F=80N. determine the acceleration of each block
A straight rod consists of a 2cm long piece of aluminum attached to a 3cm long piece of steel. calculate the change in length of the aluminum rod
q1. a 5-kg load is fastened vertically to the end of steel wire 0.5m long and 0.0006 sq.cm in cross-section. hanging
A 15 kg block is on a ramp that is inclined at 20° above the horizontal. It is associated by a string to a 19kgmass that hangs over the top edge of the ramp. Assuming that frictional forces might be neglected, what is the magnitude of the acceleratio..
A transformer is to be used to provide power for a computer disk drive that needs 5.0 V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 415, and it delivers 500 mA (the secondary current) at an output v..
A 5 kg box rests on a table. Amassless string in attached to the box and is hung over a massless, frictionless pulley. find the force that the table exerts on the box
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