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A dam on a fresh water lake has a rectangular shape with a width of 150 m. If the water depth at the dam is 30 m, what is the total water force exerted on the dam? Consider only the rgy term of the hydrostatic equation for pressure, since atmospheric pressure acts uniformly on both sides of the dam.
It is desired to construct a solenoid that will have a resistance of5.20(at 20°C) and produce a magnetic field of 4.00multiplied by10-2T at its center when it carries a current of3.40A. determine the length the solenoid should have
a jetliner is moving at a speed of 210 ms. the vertical component of the planes velocity is 45.1 ms. determine the
A pulley of radius 20cm and moment of inertia is suspended from a ceiling and has a long string of negligible mass wound around it. A ball of mass 1kg is connected to the string and released from rest from a height of 2m above the floor. Calculate th..
What horizontal force applied at its highest point is necessary to keep a wheel of mass from rolling down a slope inclined at angle to the horizontal
question1a current experiment demonstrated diffraction of phthalocyanine molecules 514.54 gmol. the molecules have a
two particles are fixed to an x axis particle 1 of charge -7.34 x 10-7 c is at the origin and particle 2 of charge 7.34
The property of objects to resist changes in motion is called inertia. If an object has a mass of m = 41.85 kg, how do we quantify the inertia this object
An asteroid is discovered to have a tiny moon that orbits it in a circular path at a distance of 115 km and with a period of 49.0 h. Find the escape velocity from the asteroid
question a balloon is directly west of two observing stations 10 km apart. the angles of elevation of the balloon from
question monochromatic light falls on two very narrow slits 0.053 mm apart. successive fringes on a screen 5.60 m away
A bat emits chirping sounds of frequency 75 kHz while hunting for moths to eat. The bat flies east at 8 m/s. What is the frequency of the reflected sound detected by the bat
Determine the work done on the box by each of the four forces that act on the box. Be sure to include the proper plus or minus sign for the work completed by each force.
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