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Let's us a simple model of a Wii Fit balance board with two forcemeters, one at the left edge and one at the right edge. The width of the board is 0.45 meters. If the left sensor reads F1= 300 N and the right sensor readsF2 = 275 N. Where is the COM of the person (measured from the left edge) and what is the mass of the person?
A beam of parallel light, 1.50 mm in diameter passes through a lens with a focal length of 13.7 cm. What is the distance between the two lenses
a 5.0-kg ball moving due east at 4.0 ms collides with a 4.0 kg ball moving due west at 3.0 ms. just after the collision
A series ac circuit contains a 230? resistor, a 18.0mH inductor, a 4.50?F capacitor, What is the power factor of this circuit
Air passes through a large-diameter glass tube, then through a small-diameter tube, and finally through a large-diameter tube again, Find the velocity of the air in the small-diameter tube
A 10 m beam of mass 330 kg extends over a ledge. The beam is not attached, but simply rests on surface. A 53 kg student intends to position the beam so that he can walk to the end of it. How far from the edge of the ledge can the beam extend.
question a horizontal merry-go-round has a mass of 1000 kg and is a solid disk of radius 2.00 m. it is started from
A He+ ion is placed in an excited state, so that its remaining electron occupies the n=5 state. The electron can make a transition to any lower energy state, thereby giving off a photon. What wavelengths of light would be given off in these transi..
a 110-g ball collides elastically with a 350-g ball that is at rest. if the 110-g ball was traveling in the positive
A railroad car of mass 3.4 x 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
you are moving due North on your tricycle with a velocity of (0,20m/s) You see a fellow tricyclist moving with relative velocity 15m/s at an angle of 150 degrees. What is your speed after the collision
Electrons are accelerated from rest through an electric potential difference of 250kV, then the potential difference is changed to 60kV. What is the ratio of the two de Broglie wavelengths produced by the electron
A barge on the Ohio river is 35 ft wide and 200 ft long with walls which are 12 ft high. What is the mass of the coal the barge is carrying downriver
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