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A stone is dropped from a cliff; 2.47 s later another stone is thrown downward with an initial speed of 35 m/s. They reach the ground simultaneously. Find the height of the cliff.
Two resistanceless rails 32 cm apart rest on a 6.0° ramp. They are joined at the bottom by a 0.63 resistor, What is the terminal (steady) velocity of the bar as it slides frictionlessly down the rails
Five equal negative point charges -q are placed symmetrically around a circle of radius R as shown. Use a rough approximation to express the magnitude of electric field E at a point on the positive x axis a distance R from the center of the circle..
A parallel plate capacitor has square plates with sides of length 20 cm. The distance between the plates is 4 mm. The plates are charged up to 50volts, What is the energy stored by the capacitor
A 0.2kg aluminum plate, initially at 20C, slides down at a 15.00 m long surface, incline at a 30 degree angle to the horizontal. The force of kinetic friction exactly balances the component of gravity down the plane so that the plane.
A child throws a snowball with a horizontal velocity of 18m/s directly toward a tree, from a distance of 9m and a height above the ground of 1.5m.
A coin is placed 8 cm in front of a concave morror. T he mirror produces a real imege that has the diameter 4 times larger than that of the coin. What is the image distance.
You are given a galvanometer with a resistance of 17.3 ? and a full scale deflection current of 8.42 mA. Find the maximum current the ammeter is capable of reading
A motorist drives south at 30.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.80 min, and finally travels northwest at 30.0 m/s for 1.00 min. For this 6.8 min trip, how do you find the total vector, average speed and average velo..
Estimate the wavelength of the light.
The amount of internal enrgy needed to raise temperature of .25kg of water by .2 degreesCis 209.3J. How fast must a .25kg baseball travel in order for its kinetic energy to equal this internal energy.
A racing car start from rest in the distance and accelerates with a uniform rate of speed 35m/s in 11 sec moving in a circular path of radius 500 m assuming constant tangential acceleration find (1) the tangential acceleration. (2) The centripetal..
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires a lot of force
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