An alpha particle consists of two protons and two
neutrons. what is the charge of an alpha particle?
(1) 1.25 × 10^19 c (3) 6.40 × 10^–19 c
(2) 2.00 c (4) 3.20 × 10^–19 c

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.

How is science controlled by the governerment