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A cylinder of radius b has a moment of inertia I = (1=2)mb2. The cylinder is rolled along a °at horizontal surface at speed v so that when it hits a ramp it will travel to a height of 50 cm and then stop. What is the initial speed v of the cylinder? The correct answer is 2.6m/s. Please show steps and formulas.
A cannon ball (m=.7 kg) traveling at 200m/s hits and is impeded into a 400 kg car. If the car was initially at rest, what will be its velocity after the impact
While in church, Peter notices a lamp hung by a light chain to the ceiling. Peter counts 85.0 cycles in 592 seconds. How high is the ceiling above the lamp
In January from Indiana, Andromeda is high in the sky at 6pm local time. (Note that local time is about 40 minutes later than Eastern Standard Time, because Indiana is on the far western end of the time zone. The sun is at its highest point in the..
David is driving a steady 31.0m/s when he passes Tina, who is sitting in her car at rest. How far does Tina drive before passing David
A sample of CO2 has a mass of 50 g. What is the number of molecules of carbon dioxide in the 50 g sample
Water flowing in a horizontal pipe is at a pressure of 1.55 105 Pa at a point where its cross-sectional area is 6.00 m2. Find the water's speed in the wider pipe
For 140 keV gamma rays, the mass attenuation coefficients for hydrogen and oxygen are 0.26 and 0.14 cm^2/g, respectively. What is the mean free path in water at this energy
Discuss the functions of a thermoflask in terms of conduction, convection, and radiation. What improvements would you add to a modern day thermoflask
A 12.0-V battery produces 180 mA when it's across a 50.0 ? load. Find the potential difference across the battery's terminals
At what driving frequency fd do two phasors have the same length? At that driving frequency, what are (c) the phase angle in degrees, (d) the angular speed at which the phasors rotate, and (e) the current amplitude?
A dragster accelerates to a speed of 100 m/s over a distance of 398 m. Determine the acceleration (assume uniform) of the dragster
A long thin rod of mass M = 2 kg and length L = 75 cm is free to rotate about its center as shown. Two identical masses (each of mass m = 0.853 kg) slide without friction along the rod. how fast is the rod rotating
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