A building made with a steel structure is 650 m high on a winter day when the temperature is 0° F. How much taller (in cm) is the building when it is 100° F? (The linear expansion coefficient of steel is 11 × 10^?6 (°C)?1.)
a. 71
b. 36
c. 40
d. 46
e. 65
c
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Suppose unlike Chelyabinsk, the next major asteroid impact we experience is more devastating. Why might this be?
A) The asteroid is larger in size. B) It has a more vertical trajectory, and is therefore less likely to break up in the atmosphere due to friction. C) It hit water, which will cause a world-wide tsunami. D) Both A and B
A solid sphere, a solid cylinder, a spherical shell, and a hoop all have the same mass and radius. Each are rolling on a horizontal surface with the same center of mass speed, and then they roll up identical inclines. Which one goes the greatest distance up its incline?
A. the hoop B. the solid sphere C. the spherical shell D. the cylinder E. They all go the same distance up their inclines.
Gasoline is useful in cars because it has
A) chemical potential energy. B) electrical potential energy. C) kinetic energy. D) gravitational potential energy. E) radiative energy.
A meter stick balances at the 50.0-cm mark. If a mass of 50.0 g is placed at the 90.0-cm mark, the stick balances at the 61.3-cm mark. What is the mass of the meter stick?
A) 127 g B) 178 g C) 89.7 g D) 32.6 g E) 73.4 g