This figure shows hydrogen's three isotopes: (a) hydrogen, (b) deuterium, and (c) tritium. How many protons and neutrons does the isotope oxygen 15 have?
a. 7 protons and 8 neutrons
b. 8 protons and 7 neutrons
c. 8 protons and 15 neutrons
d. 15 protons and 8 neutrons
e. 8 protons and 15 neutrons
b
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In the context of the electromagnetic spectrum, which of the following forms of electromagnetic radiation has a shorter wavelength than the shortest wavelength of visible light?
A) Red light B) Microwaves C) Radio waves D) Ultraviolet light
Shepherd moons were discovered because scientists hypothesized their existence after observing:
A) the Cassini Gap. B) the spiral density waves in the ring system. C) that the gaps are not empty space, but low density regions of material. D) the narrow F Ring. E) the backlit E Ring.
A girl throws a rock horizontally with a speed of 12 m/s from a bridge. It falls 2.28 s before hitting the water below. Neglect air
(a) How high is the bridge from the water below? (b) How far horizontally does the rock travel before striking the water?
Why are there so few tidal energy installations in existence? Explain
What will be an ideal response?