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A men holding a 10-kg block by a cord designed to withstand a tension of 150 N steps into an elevator. When the elevartor starts up, the cord breaks. What was the minimum acceleration (in m/s2) of the elevator?
A rod of length ? with uniform charge per unit length ? , where ? > 0, is placed a distance d from the origin along the x axis, The segment is at a distance x from the origin, Determine the electric field
One gram of water changes from liquid to solid at a constantpressure of 1.00 atm and a constant temperature of 0°C. Find the change in the internal energy of the water
A simple pendulum consists of a ball connected to one end of a thin brass wire. The period of the pendulum is 2.0000 s. The temperature rises by 152° C, and the length of the wire increases. Determine the period of the heated pendulum.
Suppose the length of a clock's pendulum is changed by 1.000%, exactly at noon one day. What time will it read 24.00 hours later, assuming it the pendulum has kept perfect time before the change? Note that there are two answers, and perform the ca..
A box of well called as breakfast cereal states that one small portion of the cereal contains 110 Calories (1 Cal = 4186 J). If 2.0 percent of this energy could be converted by a weight lifters body into work completed in lifting a barbell.
A water collector on a farm roof 5m high from the ground overflows with rain through a large circular are of radius 1.2m. The water then falls through a pipe and into a tub near the ground; it exits the pipe through a .3m radius spout located .5m fro..
A block of mass 20m can move without friction on a horizontal table. find the magnitude of the acceleration of the descending block
A ball on the end of a string is whirled around in a horizontal circle of radius 0.300 m. The plane of the circle is 1.40 m above the ground. Find the radial acceleration of the ball during its circular motion
A spaceship is measured to be 186 m long while at rest relative to the observer. what length does the observer measure
Two tug boats are towing a ship. Each exerts a horizontal force of 5 tons and the angle between their towropes is 90 degrees. What net force is exerted on the ship?
Steam at 100°C is added to ice at 0°C. Find the amount of ice melted and the final temperature when the mass of steam is 11 g and the mass of ice is 53 g
Estimate the gravitational force between the Sun and Venus. The mass of the Sun is 1.99×10^30 kg. The mass of Venus is 48.7×10^23 kg. The distance between them is 10.8×10^10 m.
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