Compute constant negative angular acceleration of magnitude
An electric motor rotating a workshop grinding wheel at a rate of 113 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.20 rad/s2.
a) How long does it take for the grinding wheel to stop?
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You wish to resolve the calcium-H line at 396.85 nm from the hydrogen- line at 397.05 nm in a first-order spectrum.
Find two Web sites dealing with indigenous cultures and/or religions. - Discuss how modern civilization has impacted the spiritual lives of the indigenous peoples you explored. Are indigenous religions stillpracticed today? If so, how have th
The rectangle is allowed to fall through a magnetic field directed perpendicular to the motion of the rectangle. the rectangle accelerates downward until it reaches a contant speed of 2 m/s with its top not yet in the region of the field. determin
What were some of the most significant discoveries and understanding about the universe that were made by Greeks?
What is the difference between their wavelengths? What diameter optical telescope would be needed to resolve a Sun-sized star 10 light-years from Earth?
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A 42 kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 0.7 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
Bob, who has a mass of 80 kg, can throw a 460 g rock with a speed of 26 m/s. The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.2 m.
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