PLEASE HELP IM DESPERATE! What is the mass of planet Q? Note: The constant of universal gravity (G) equals 6.674 10-11
Nm²kg

A) 4.2 x 10^31kg
B) 3.6 x 10^22 kg
C) 7.1 x 10^23kg
D) 3.0 x 10^23kg

Match the atomic particles with their characteristics. 1. made of two protons and two neutrons neutron 2. similar to an electron; positive charge neutrino 3. orbits nucleus; negative charge positron 4. bundle of energy; zero charge proton 5. found in nucleus; positive charge meson 6. very unstable; +, -, or zero charge gamma 7. found in nucleus; zero charge electron 8. negative particle; negative charge beta 9. atomic energy converted to mass alpha

Which of the following correctly describes the early view of catastrophism?

The air that we breath is made mostly of which gaseous molecule