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two equal masses are attached to the ends of a spring whose force constant is k. They are pulled apart on a frictionless surface and released. With what frequency do they oscillate?
What is the speed of projectile immediately before it hits the ground if air friction does one and a half times as much work on projectile when it is going down as it did when it was going up.
A rock is shot vertically upward from the edge of the top of a tall building. with what upward velocity is the rock shot
With its double helix structure, DNA is coiled like a spring. A biophysicist grabs the end of a DNA strand with optical tweezers, What's the DNA spring constant
what is the bullets time in the air. The heat capacity of ice is 2.09 and that of steam is 2.01.
Chuck Norris's razor blade has an output force of 2500 lbs is used to shear his burley face. The shaving blade has the 0.35 inch thick blade with a 55 degree slope.
A relaxed crystalline lens has a refractive index n=1.42 and radii of curvature R1=+10.0mm, Calculate the focal length and optical power of the lens
Two very narrow slits are illuminated by monochromatic coherent light in air that has wavelength 560 nm, What is the distance between the two slits
The drawing (not to scale) shows one alignment of the sun, earth, and moon. find the magnitude of the net gravitational force on the moon
As part of a safety investigation, two 1700kg cars travelling at 25 m/s are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.3 seconds to stop, and (b) car that hits a concrete ..
A copper kettle contains water at 23.4 °C. When the water is heated to 99.5 °C, Determine the volume of the kettle
Two photons have different frequencies f1 and f2 . If the ratio of their momenta is 22.5, what is the ratio of their frequencies
Consider an LR circuit like that displayed in Figure 6.6 in Activity 2-1 in your lab manual. You measure the current through the inductor as a function of time, What is the total resistance of the circuit
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