A horizontal force of magnitude 6.5 N is exerted tangentially on a Frisbee of mass 32 grams and radius 14.3 cm. Assuming the Frisbee, a uniform disk, is originally at rest and the force is exerted for 0.08 s, determine the angular velocity of rotation about the central axis when the Frisbee is released.
What will be an ideal response?
227 rad/s
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Buoyancy: A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in a lake having water of density 1000 kg/m3?
A. 0.50 × 103 kg B. 1.5 × 103 kg C. 2.5 × 103 kg D. 3.5 × 103 kg
Wave Characteristics: What is the frequency of 20-mm microwaves? (c = 3.0 × 108 m/s)
A. 100 MHz B. 400 MHz C. 15 GHz D. 73 GHz
A wave that requires a medium through wave which to travel
a) Electromagnetic wave b) Mechanical wave c) Longitudinal wave d) Transverse wave
Why are lunar eclipses more commonly seen than solar eclipses?
A) Lunar eclipses occur at night and are easier to see. B) The Moon goes around the Earth faster than the Earth goes around the Sun. C) The Earth casts a bigger shadow than the Moon. D) The tilt of the Moon's axis is smaller than the Earth's. E) The Moon is much closer to the Earth than the Sun.