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A bolt comes loose from the bottom of an elevator that is movingupward at a speed of 5.86m/s. The bolt reaches the bottom of theelevator shaft in 4.35s. How high up was the elevator when the boltcame loose and what is the speed of the bolt when it hits thebottom of the elevator shaft?
suppose that protons are fired towards the large flat side of a charged conducting plate. initial speed of the protons
Two tiny conducting spheres are identical and carry charges of -20.7 μC and +51.7 μC. They are separated by a distance of 2.39 cm. What is the magnitude of the force that each sphere experiences?
A step-down transformer is used for recharging the batteries of portable devices such as tape players. find the voltage supplied to a tape player from the transformer
A 1000 Hz sound travels through pure oxygen. The wavelength of the sound is measured to be 0.65m. What is the speed of sound in oxygen?
consider light that is refracted by a prism shaped like an equilateral triangle. the incident ray is parallel with the
If a compressive force of 3.2×104N is exerted on the end of a 18cm long bone of cross-sectional area 4.3cm2 , will the bone break, By how much does it shorten
a simple reaction-time test a meter stick is held vertically above your hand with the lower end between your thumb and
a spherical ball with a radius of 2.660times10-1 m is completely submerged in a fluid that has a density of
A banked circular highway curve is designed for traffic moving at 60 km/h. What is the minimum coefficient of friction between tires and road that will allows
A flask with a volume of 1.50 L, providedwith a stopcock, contains ethane gas (C2H6)at 300 K and atomospheric pressure (1.013 x 105Pa). How many grams of ethane remainin the flask
Two uncharged metal spheres, L and M, are in contact. Anegatively charged rod is brought close to L, but not touching it,as shown. The two spheres are slightly separated and the rod isthen withdrawn. As a result:
A 3.0 kg block rests on a 30 degree slope and is attached by a string of neglible mass to a sold drum of mass 0.80 kg and radius 10.0 cm, Find the angular accleration of the drum
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