One mole of the carbon-12 isotope contains 6.022 × 10^23 atoms. What volume in m3 would be needed to store one mole of cube-shaped children's blocks 2.00 cm long on each side?
a. 4.8 × 10^18
b. 1.2 × 10^22
c. 6.0 × 10^23
d. 1.2 × 10^24
e. 4.8 × 10^24
A
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At a given location in space, the potential is known to be greater when one moves in any direction. To be more specific, no matter which direction one goes, a small step in that direction results in an increase in the potential by the same amount. This means that the Electric field at this location is
A. Can take on any value at all. B. Zero C. Negative D. Positive
What causes the seasons?
A. the elliptical shape of Earth's equator B. the changing distance between Earth and the Sun C. Earth's spin axis is tilted from the poles of the celestial sphere D. the tilt of Earth's spin axis relative to Earth's orbit
Graphical Addition: If -
= 0, then the vectors
and
have equal magnitudes and are directed in the same direction.
A. True B. False
Springs: A heavy dart and a light dart are launched horizontally on a frictionless table by identical ideal springs. Both springs were initially compressed by the same amount. Which of the following statements about these darts are correct? (There could be more than one correct choice.)
A. The darts both have the same kinetic energy just as they move free of the spring. B. The lighter dart leaves the spring moving faster than the heavy dart. C. The heavy dart had more initial elastic potential energy than the light dart. D. Both darts move free of the spring with the same speed. E. Both darts had the same initial elastic potential energy.