A nucleon is either a

A) positron or an electron.
B) proton or an electron.
C) neutron or an electron.
D) proton or a neutron.


Answer: D

Physics & Space Science

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A 2.0-kg block slides on a rough horizontal surface. A force (magnitude P = 4.0 N) acting parallel to the surface is applied to the block. The magnitude of the block's acceleration is 1.2 m/s2 . If P is increased to 5.0 N, determine the magnitude of the block's acceleration

a. 2.1 m/s2 b. 2.3 m/s2 c. 1.9 m/s2 d. 1.7 m/s2 e. 3.2 m/s2

Physics & Space Science

Which has the larger light-gathering power?

a. a telescope of 5 cm diameter and focal length of 50 cm b. a telescope of 6 cm diameter and focal length of 100 cm c. a telescope of 2 cm diameter and focal length of 100 cm d. a telescope of 3 cm diameter and focal length of 75 cm e. both b and c since they have the same focal length.

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Elementary Particles: What combination of quarks produces a neutron and what are the electric charges on these quarks, expressed in terms of e?

What will be an ideal response?

Physics & Space Science

Absolute zero is the temperature of

A. frozen water B. the Universe C. liquid helium D. nothing

Physics & Space Science