When was the existence of the neutron confirmed?

a. in ancient times
b. in 1895
c. in 1932
d. in 1969


c

Physics & Space Science

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Two point charges are on the x-axis. One charge, is located at the origin, and the other charge, is located at x = 9.00 m. What is the force on ?

A. 20.0 nN in the positive x-direction B. 20.0 pN in the positive x-direction C. 20.0 nN in the negative x-direction D. 20.0 pN in the negative x-direction E. 180 nN in the positive x-direction

Physics & Space Science

Laplace's nebular hypothesis was problematic in that he could not explain ____

a. the different types of planets b. the rotational direction of the planets c. how the Sun had <0.5% of the Solar System's angular momentum d. how one star could come within a close encounter of another star e. how gravity was the dominant force of planet formation

Physics & Space Science

What kind of object do we think lies in the center of the Milky Way Galaxy?

A) a 3- to 4-million-solar-mass black hole B) a gigantic X-ray binary system C) a dense cluster of young, hot stars D) an enormous collection of dark matter, which explains why we detect no light at all from the galactic center

Physics & Space Science

White light hitting white paper is an example of

A) absorption. B) transmission. C) reflection or scattering. D) emission.

Physics & Space Science