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A hoist has a winding drum 0.9 m effective diameter and a radius of gyration of 0.35 m, the mass of the drum being 100 kg. A load of 320 kg is to beraised 36 m, the mass of the lifting rope being 1 kgim. If the acceleration is1.8 mis2 until a constant velocity of 6 mis is reached, find the power necessary just at the end of the acceleration.
a 47.0 g golf ball is driven from the tee with an initial speed of 52.0 ms and rises to a height of 25.2 m.a neglect
A 76.4 kg man sits in a 5.4 kg chair so that his weight is evenly distributed on the legs of the chair. What is the pressure exerted on the floor by each leg?
A solid disk of radius R and mass 2.66 kg is spinning at angular velocity 66.2 rpm about a vertical axis. What is the mass of the second disk
A circular metal loop is 26.0 cm in diameter. How large a current must flow through this metal
Our solar system is about 1.34 parsecs away from planet A. An astronaut is moving away from earth toward planet A at 0.80c as measured in the earth's reference frame. What frequency of light is observed by the earthlings
The distance a car travels on a tank of gasoline is a random variable.
A 25 g glass tumbler contains 450 mL of water at 24°C. what is the final temperature of the drink
A 10 g bullet traveling at 430m/s strikes a 13kg , 1.1-m-wide door at the edge opposite the hinge, What is the angular velocity of the door just after impac
q1. a 2.75-mm-tall object is 8.0 cm to the left of a convex lens of 5.7 cm focal length. find the image position and
A plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19 -T magnetic field. The loop carries a current of 6.2 A. obtain the magnetic moment of the loop
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. Calculate the number of lines per centimeter on the grating
An ultrasound unit sends a 2.4 MHz sound wave into a 35cm long tube filled with an unkown liquid. What is the speed of the sound in the liquid
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