A bowling ball has a mass of 7.00 kg, a moment of inertia of 2.8 × 10^?2 kg·m2, and a radius of 0.100 m. If it rolls down the lane without slipping at a linear speed of 4.30 m/s, what is its angular speed?
a. 70.0 rad/s b. 43.0 rad/s
c. 30.1 rad/s d. 0.430 rad/s
e. 0.700 rad/s
b
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Primitive meteorites can be distinguished from other meteorites and terrestrial rocks because they
A) contain a noticeable fraction of pure metallic flakes. B) resemble the composition of Earth's core. C) contain a lot of iron and were used by humans to make iron tools. D) resemble the composition of Earth's mantle. E) resemble the composition of rocks from lava flows that occurred on asteroids very shortly after the formation of the solar system.
Pulsars are rapidly spinning
A) regular stars like our Sun. B) red giant stars. C) neutron stars. D) white dwarfs. E) supernova.
A mirror with a focal length 20 cm has a 4.0 cm tall object placed 100 cm in front of it. What is the height of the image?
A) 1.0 cm B) 1.6 cm C) -16 cm D) -1.0 cm E) 16 cm