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A ball is thrown forward horizontally from the top of a cliff with a velocity of 10 m/s. the height of the cliff is 45 meter. Find the time taken for the ball to reach the ground? Find the distance from the cliff of the ball to the horizontal just before it hits the ground? And find the direction of the ball to the horizontal just before it hits the ground?
A galvanometer has an internal resistance of 100 ? and deflects full-scale at a current of 2.00 mA. how should this resistor be connected to the galvanometer
a sled of mass 1 kg has an initial speed of 1.00m/s across a horizontal surface. the force of friction between the sled and surface is 0.2N. What is the speed of the sled after it ha traveled a distance of 2.00m
A soldier has a huge contraption that notches a large 1 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. What is the speed of the arrow
The masses of the Pluto and Charon are 1.31×10^22 kg and 1.52×10^21 kg, respectively, Where is the center mass of this system located
a cube of wood floating in water supports a 200g mass at the centre of its top face. when the mass is removed, the cube rises by 2cm. determine the volume of the cube
Two identical 1.40 kg masses are pressed against opposite ends of a spring of force constant 1.70 N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth
in a fourth of july celebration a firecracker is launched from ground level with an initial velocity of 28.6 at 39.1
A 5000 kg helicopter accelerates upward at 0.50 m/s2 while lifting a 2000 kg car. What is the lift force exerted by the air on the rotors? Evaluate the tension in the cable that connects the car to the helicopter?
in an atwood machine one block has a mass of m1 560 g and the other has a mass of m2 460 g. the pulley which is
Using energy considerations, compute the average force the beam exerts on the pile driver while the pile driver is brought to rest.
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
A Ferris wheel starts at rest and builds up to a final angularspeed of 0.60 rad/s while rotating through an angular displacementof 3.9 rad. What is its average angular acceleration
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