Two balls having the same kinetic energy
A 7.0 kg bowling ball moves at 2.25 m/s. How fast must a 2.00 g Ping-Pong ball move so that the two balls have the same kinetic energy?
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Suppose that a rock contains 0.539 mg of 206Pb. If the current rock specimen contains 2.035 mg of 238U, how many mg of 238U were in the original rock specimen?
A 2.0 {rm kg} wood block is launched up a wooden ramp that is inclined at a 35 degree angle. The block's initial speed is 10 {rm m/s}. What vertical height does the block reach above its starting point?
A thin 320 g disk with a diameter of 5.20 cm rotates about an axis through its center with 0.705 J of kinetic energy. What is the speed (in m/s) of a point on the rim?
In the afternoon, the decibel level of a busy freeway is 80 dB with 100 cars passing a given minute. Late at night, the traffic flow is only 5 cars per minute. What is the late-night decibel level?
What English case (related to obscenity) set the standard (a bad-tendency test) that would generally apply in England and the U.S. until the 1960s?
Radon (222Rn), a dense, noble gas, is commonly found in basements in some areas of the United States. Radon is a daughter of 238U decay. Which statement about radon is not correct?
A ceiling fan with 84cm diameter blades is turning at 61rpm. Suppose the fan coasts to a stop 25 after being turned off. What is the speed of the tip of a blade 10 s after the fan is turned off?
A 4.0 syringe has an inner diameter of 6.0 , a needle inner diameter of 0.27 , and a plunger pad diameter (where you place your finger) of 1.2 . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. Assume th
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