What is the speed of the ball at point
A 545 g ball swings in a vertical circle at the end of a 1.3 m-long string. When the ball is at the bottom of the circle, the tension in the string is 14 N. What is the speed of the ball at that point?
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A stationary proton is accelerated through a potential difference of 83.5 kV. What speed did the proton acquire?
If 3.40 g of copper was recovered and you started with 7.05 g of copper (II) chloride, then what is the percent yield of the reaction ?
A jetliner, traveling northward, is landing with a speed of 63.8 m/s. Once the jet touches down, it has 763 m of runway in which to reduce its speed to 11.2 m/s. Compute the average acceleration (magnitude and direction) of the plane during landin
What are the benefits and drawbacks of a mandatory National Identity Card? Specifically address whether the card will be effective in increasing the security of the U.S. or will it infringe on civil liberties.
Define the concept of death anxiety. Also, do you agree or disagree with Malinowski on the theory of religion as a psychological defense against death anxiety? Why or why not? What other defenses are there against death anxiety?
What is the formula for the acceleration a of the hanger in terms of the tension T, the hanger's mass m, and the acceleration of gravity g?
Then swinging the thermometer back and forth in air. it is observed that the the wet-bulb thermometer is always less than or equal to the dry-bulb temperature. explain why?
A portable electric water heater transfers 225 watts (W) of power to 5.5 L of water, where 1 W = 1 J/s. How much time (in nanoseconds) will it take for the water to heat 5.5 L of water from 298.15 Kelvins to 315.15 Kelvins? (Assume the density of
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