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A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. Two successive resonances are heard at 68.8 Hz and 76.9 Hz. How deep is the well? Use 345 m/s for the speed
The solution to Bernoulli's equation, The construction of a flat rectangular roof (3.9 m x 4.3 m) allows it to withstand a maximum net outward force of 20050 N.
A satellite moves around the earth in a circular orbit at a constant speed of 5000m/s. find the radius of the orbit
A 70 kg man (rad=0.25m) standing on a 10-kg disc (rad=0.4m) with his arms extended (rad=0.9m) holding a 15-kg weight in each hand. What is the rotational inertia of man with weights.
Assume this is the innermost line of interference (m = 0) and that speed of sound in air is 331 m/s, find the (linear) frequency of the sound in Hz.
Two objects attract each other gravitationally with a force of 2.5 * 10^-10N when they are .25m apart. There total mass is 5.00kg. Find their individual masses
A uniform electric field of magnitude 395 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. What is the work done by the field on the electron
How far from a -6.20 microcoulombs point charge must a 2.30 microcoulombs, Calculate the distance in meters
A 4.1-kg block slides down an inclined plane that makes an angle of 29° with the horizontal. Find the coefficient of kinetic friction between the block and plane
This caused Goodly to borrow to meet its obligations, resulting in a drop in its stock price. Are the directors liable? Explain why or explain why not?
At one instant a bicyclist is 25m due east of a park's flagpole, going due south with a speed of 8 m/s. Then, 11 s later, the cyclist is 65m due north of flagpole, going due east with a speed of 10 m/s.
You're a marine biologist concerned with the effects of sonic booms on plankton, and you need to estimate the altitude of a supersonic aircraft flying directly over you at 1.1 times the speed of sound
A gun shoots bullets that leave the muzzle with a speed of 341. If a bullet is to hit a target 177 away at the level of the muzzle, the gun should be aimed at a point above the target.
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