At which is the potential smallest?

A. A
B. B
C. C
D. D
E. E
F. None of the labeled points


B. B

Physics & Space Science

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How is quantum tunneling important to our existence here on Earth?

A) It plays a crucial role in nuclear fusion in the Sun, so that our Sun would not shine brightly without it. B) It explains how neutron stars are able to stay stable rather than collapsing under their strong gravity. C) It explains why electrons in atoms gradually fill different energy levels, thus making chemistry possible. D) It is important to understanding the law of conservation of energy.

Physics & Space Science

The corona can reach temperatures of up to ____

a. 500,000 K b. 1,000,000 K c. 10,000 K d. 5800 K e. 2,000,000 K

Physics & Space Science

The Earth rotates 360 degrees on its axis

twice a day such that the Sub rises in the West and sets in the East. once a day such that the Sun rises in the East and sets in the West. twice a day such that the Sun rises in the East and sets in the West. once a day such that the Sun rises in the West and sets in the East.

Physics & Space Science

Three lenses, each of focal length 90 cm, are placed in contact. What is the focal length of the combination?

A. 27 cm B. 93 cm C. 1/30 cm D. 45 cm E. 30 cm

Physics & Space Science