A cup of water with ice floating in it is at the level of the brim (near to overflowing). As the ice melts, what will the water in the cup do?
1.It will spill out of the cup.
2.It will drop in level.
3.It will stay at the same level, right at the cup's brim.
4.It is impossible to determine.
3
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Optical SETI is useful for
A) focused communication over short distances and in particular directions B) communication over wide areas and large distances C) communication over large distances in directions where interstellar dust is not present D) communication with civilizations which surround similar stars to our Sun and hence have evolved to see visible radiation
What is the maximum kinetic energy (in eV) of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm?
a. 1.9 b. 1.2 c. 3.1 d. zero e. 6.2
The rings around Uranus and Neptune are confined by shepherd satellites
a. True b. False Indicate whether the statement is true or false
A 2.00 kg mass is connected to a spring with a spring constant of 9.00 N/m. The displacement is given by the expression x(t) = 12.0 cm sin
What is the period of the simple harmonic motion?
A. 4.75 sec B. 4.27 sec C. 3.95 sec D. 3.36 sec E. 2.96 sec