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A ball is thrown vertically upward with a speed of 1.86 m/sfrom a point 3.82 m above the ground. calculate the time in which the ball will reach the ground.
Sound 1 has an intensity of 35.0 W/m^2. Sound 2 has an intensity level that is 2.7 dB greater than the intensity level of sound 1
The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.64 m, Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point
Find out the object position p for the image to be erect and 7 times the size of the object. Focal length is 46 cm.
Commercial ultracentrifuges can rotate at rates of 100,000 rpm. Find the distance from the rotation axis of the sample chamber in such a device
An electric motor rotating a workshop grinding wheel at a rate of 8.90 101 rev/min is switched off. How long does it take for the grinding wheel to stop
A simple pendulum with mass m = 1.5 kg and length L = 2.41 m hangs from the ceiling, What is the magnitude of the radial acceleration as the pendulum passes through the equilibrium point
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, Over what distance must the lens be movable
The warm source of a Carnot cycle has a temperature off 100 C, while the cold source consists of melting ice. When the cycle operates for 1 hour it is observed that 1 metric ton of ice has melted. Calculate (a) the heat absorbed in the cycle from the..
A baseball of mass 0.15kg approaches a batter at 30.0 m/s. Consider the ball as traveling horizontally toward the batter in the negative x-direction so that V= -30.0 i m/s. What is the work done by the bat on the ball
A father racing his son has 1/3 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.5 m/s and then has the same kinetic energy as the son.
A 6500 kg helicopter accelerates upward at 0.59 m/s2 while lifting a 1210 kg car. What is the lift force exerted by the air on the rotors?
The direction angle of a vector is defined as its positive angle relativeto the positive x-axis.
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