A bowling ball has a mass of 7.00 kg, a moment of inertia of 2.80 × 10^?2 kg·m2, and a radius of 0.100 m. If it rolls down the lane without slipping at a linear speed of 4.00 m/s, what is its total kinetic energy?
a. 78.4 J b. 22.4 J
c. 56.0 J d. 40.0 J
a
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Molar Specific Heats: The temperature of an ideal gas in a sealed rigid 0.60-m3 container is reduced from 460 K to 270 K. The final pressure of the gas is 90 kPA. The molar heat capacity at constant volume of the gas is 28.0 J/mol ? K. How much heat is absorbed by the gas during this process? (R = 8.31 J/mol ? K)
A. -130 kJ B. -170 kJ C. 130 kJ D. 170 kJ E. 0 kJ
A hollow spherical planet is inhabited by people who live inside it, where the gravitational field is zero. When a very massive spaceship lands on the planet's surface, inhabitants find that the gravitational field inside the planet is
A) still zero. B) non-zero, directed toward the spaceship. C) non-zero, directed away from the spaceship.
If a charged particle is moving in a uniform magnetic field, its path can be
a. a straight line. b. a circle. c. a helix. d. any of the above.
A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2 . The ball is referred to at the two second time. The velocity is __________
Fill in the blank(s) with correct word