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A hoodlum throws a stone vertically downward with an initial speedof 11.3 m/s from the roof of abuilding, 28.0 m above theground.
(a) How long does it take the stone to reach the ground?(b) What is the speed of the stone at impact?
A 11 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 2.2 m/s2, find the force exerted by the rope on the bucket of water
An ideal gas is compressed from a volume of 400 cm^3 to a volume of 150 cm^3 slowly and isothermally in a piston-cylinder system. If the final pressure is 100 kPa, determine a) the work done on the gas and b) the heat transfer (specify whether the..
A bare helium nucleus has two positive charges and a mass of 6.64 multiplied by 10-27 kg. What voltage would be needed to obtain this energy
A LASIK vision correction system uses a laser that emits 10 ns-long pulses of light, each with 2.5 mJ of energy. What is the average power of each laser pulse
The three-toed sloth is the slowest moving land mammal. On the ground, the sloth moves at an average speed of 0.030 m/s, how much further would the tortoise have gone relative to the sloth
In a head-on collision, a car stops in 0.17s from a speed of 30m/s . The driver has a mass of 78kg, What force is applied to the driver by his seat belt during that fraction of a second
For a procedure, the enthalpy change and the entropy change of the system is 173000 J and its entropy change is 210 J/K. compute the free energy change of the system at 298 K.
A mortar crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. find How long will the mortar shell remain in the air
One mole of an ideal gas does 2500 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm and volume of 28.0 L. Determine the temperature of the gas
A 0.22 m radius pulley if free to rotate about a horizontal axis. At what acceleration will the larger mass fall to the ground
A converging lens of focal length 7.550cm is 20.5cm to the left of a diverging lens of focal length -6.50cm, find the location of the coins final image
A 1.5-H inductor is connected in series with a 200-? resistor through a 15-V dc power supply and a switch. what is the maximum energy stored in the inductor
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