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A student throws a ball vertically upward such that is travels 7.1 meter to its maximum height. If the ball is caught at the initial height 2.4 second after being thrown,
(a) Estimate what is the ball average speed and
(b) Estimate what is its average velocity?
Two cars leave a stoplight, one 0.5128 s before the other. The second car accelerates with twice the acceleration of the first. What is the ratio of their speeds at that instant
assume the earth's average temperature is 10 degrees C. Venus is hit by a meteorite and a cloud of dust surrounds the sun. What will in (in centigrade) the new temperature of the earth
A +2.7 µC charge is 32 cm to the right of a -5.3 µC charge. At the midpoint between the two charges, determine the potential and the electric field
A 185-kg sculpture hangs from a horizontal rod that serves as a pivot about which the sculpture can oscillate. The sculpture\'s moment of inertia with respect to the pivot is 16.7 kg·m2, and when it is swung at small amplitudes, it is found to oscill..
The radius of a proton is 0.9e-15 m; suppose that if the particles touch, the distance between their centers will be twice that. What will be the total kinetic energy of both particles an instant before they touch.
A mass m = 2.4 kg is at the end of a horizontal spring of spring constant k = 265 N/m on a frictionless horizontal surface. Calculate the angular frequency of the oscillation in rad/seconds
The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 {\rm mm} long. For how long is the bullet in the barrel
A cart of mass 250 g is placed on africtionless horizontal air track. evaluate the period at which it oscillates
A boat moves through the water of a river at 10.0 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.5 m/s, how long does it taket he boat to make a round trip consisting of a 300 m displacemen..
Four charged particles are at the corners of a square of side, Determine the total electric force exerted on q
An extreme skier, starting from rest, coasts down a mountain thatmakes an angle of 39.3 ° with the horizontal. How fast is she going just before she lands
A 320 piano slides 3.4 down a 33 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure(Figure 1) ). The effective coefficient of kinetic friction is 0.40. Calculate the force exerted by th..
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