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At 14.7 g mass is attached to a frictionless, horizontal spring. After the spring was stretched a certain distance and released, its maximum speed was found to be 4.22m/s. If the speed at x = -2.84 cm is 1.63m/s, what is the oscillation frequency of the spring?
What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal voltage of 16.5 V while a current of 7.50 A is charging it
Suppose 28.5 kg of 87.5°C water is placed in contact with 28.5 kg of 11°C water. What is the change in heat (in J) of the hot water
A person of mass 50 kg rides a loop the loop (vertical circular track) at an amusement park. find the normal force exerted at the bottom of the loop
Why is surface wind always directed at some angle across sea-level isobars toward lower pressure? Why is the surface wind directed across the sea-level isobars at a greater angle in Madison than over the middle of Lake Michigan.
In an explosion, an object breaks down into two pieces, M1 and M2. M2 flies away at 3 times the speed of M1. Which mass has more momentum immediately after the explosion
What is the work completed by the force of gravity.
Three pendulums with strings of the same length and bobs of the same mass are pulled out to angles q1, q2 and q3 respectively and free. The approximation sin q = q holds for all three angles, with q3 > q2 > q1. How do the angular frequencies of th..
A 47 g golf ball is driven from the tee with an initial speed of 50.0 m/s and rises to a height of 24.8 m.
A 92-keV x-ray is Compton-scattered through an angle of 10o. What is the energy of the x-ray after scattering
Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of height 1.75 m
How long will a radar signal take to complete a round trip between earth and mars when the two planets are 0.7 AU apart.
A gasoline engine absorbs 4190 J of heat and performs 3170 J of mechanical work for each turn of the engine shaft
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