The linear momentum of a 40.0 kg object moving around a 90.0 m circle at a constant speed of 7.60 m/s is
a. 0.0 kg m/s
b. 304 kg m/s
c. 1155 kg m/s
d. 27360 kg m/s
Answer: b. 304 kg m/s
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What is the equivalent capacitance of the combination shown?
a.
24 µF
b.
100 µF
c.
12 µF
d.
4.6 µF
For a particle in a 1-dimensional box, what happens to the zero-point energy if the width of the box is halved?
A. nothing, it remains at zero B. it doubles C. it halves D. it quadruples E. it quarters
The specific heat of an object is:
a. its heat capacity divided by its mass. b. its mass divided by its heat capacity. c. the same as its heat capacity. d. its heat capacity multiplied by its mass. e. its temperature multiplied by the atmospheric pressure.
If you add 1.33 MJ of heat to 500 g of water at 50°C in a sealed container, what is the final temperature of the steam?
The latent heat of vaporization of water is 22.6 × 105 J/kg, the specific heat of steam is 2010 J/kg ? K, and the specific heat of water is 4186 J/kg ? K. A) 100°C B) 112°C C) 123°C D) 147°C E) 195°C