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A string 1.5 meter long with a mass of 2.5 gram is stretched between two fixed points with a tension of 99 Newton. Obtain the frequency of the fundamental on this string.
How fast would javelin (normally 2.5 m long) have to be going (relative to an observer) to appear 20% shorter? (2 m long)
A spring of spring constant k = 340 Nm-1 is used to launch a 1.5-kg block along a horizontal surface by compressing the spring by a distance of 18 cm. how far does the block slide
An 91kg man drops from rest on adiving board 3.0m above the surface of the water and comes to rest0.55s after reaching the water. What is the net force on the diveras he is brought to rest
Dan is gliding on his skateboard at 3.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground
At a coal burning power plant a steam turbine is operated with a power output of 483 MW. Determine at what rate is heat discarded to the environment by this power plant
It is know that a certain hydrogen atom has a definite value of l. What does this statement tell you about the angularmomentum. What are the allowed energies of consistent with this information?
If Jupiter emitted just as much energy per second as it receives from the Sun, the average temperature of the planet's cloud tops would be about 107 K. compute what the average temperature must actually be
The electric field midway between two equal but opposite point charges is 745 N/C, What is the magnitude of the charge on each
An 88 kg spacewalking astronaut pushes off a 640kg satellite, exerting a 640N force for the 0.60 s it takes him to straighten his arms.
a 0.17hp electric motor on a water well pumps water from 42.64m below the surface. the density of water is 1.0 kgliter.
75-kg person stands on a 6.0-m-long 47-kg ladder. The ladder is tilted 60° above the horizontal. The coefficient of friction between the floor and the ladder is 0.42. The coefficient of friction between the wall and the ladder is zero.What dis..
The electric field between the plates of a paper-separated capacitor is 8.18×104 . The plates are 1.90 apart, and the charge on each plate is 0.750. Determine the area of each plate
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