Pendulum rises a maxium vertical distance
A 50-g bullet is fired into and becomes embedded in a 300-g wooden ballistic pendulum with a solid arm. If the pendulum rises a maxium vertical distance of 0.35m what was the speed of the bullet just prior to the collision?
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A sound has an intensity of 38.0 w/m2. A second sound has an intensity level which is 2.5 dB greater than the intensiry level of the first sound. What is the intensity of the second sound?
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(a) If the phone is 40 m above the ground when it is dropped, how long does it take for the phone to reach the ground? (b) What is its velocity just before it lands? Choose upward as the positive direction.
A Styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?
Calculate the number of moles of hydrogen gas that are present at equilibrium if a mixture of 0.300 moles of carbon monoxide and 0.300 moles of water vapor are heated to 700 degrees Celcius in a 10.0 L container.
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