For which of the following objects, each with the same kinetic energy, is the de Broglie wavelength the largest?
a. car
b. planet
c. electron
d. house fly
c
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What is the formula of a compound formed from the ions M2+ and X2-?
a. M2X b. MX c. M2X2 d. MX2
In the NSOM technique, the letter S stands for:
a. slow. c. scanning. b. small. d. swift.
In what way is the rocky material of Jupiter's core different from the rocks found on Earth?
a. It is much cooler because Jupiter is further from the sun. b. It contains more liquid water. c. It is much hotter and denser because of the extreme pressure at the core of Jupiter. d. It is not composed of iron and nickel because this material will float of the surface e. It is composed entirely of ices that have frozen into a large rock like structure.
A fire hose is turned on the door of a burning building in order to knock the door down. This requires a force of 1000 N
If the hose delivers 40 kg of water per second, what is the minimum velocity of the stream needed to knock down the door, assuming the water doesn't bounce back? A) 15 m/s B) 20 m/s C) 25 m/s D) 30 m/s