Why do atoms tend to combine with other atoms instead of existing as single atoms?

One astronomical unit, or one AU is defined as the: A. Distance traveled by light in one year B. Mean distance between the Sun and the Earth C. Distance from which Earth-Sun distance will D. Distance traveled by light in one second.

Which of the following is a limited resource, which can take longer to be replenished than it takes to be used up?

An airplane traveling 245 m/s east experienced turbulence, so the pilot decided to slow down to 230 m/s. it took the pilot 7 seconds to get down to this speed. what is the acceleration of the plane? (round your answer to the nearest whole number.)

T Object] The force that accelerates a rocket in outer space is exerted on the rocket by the ___.

What's energy does the student have before he jumps of the bridge

Based on the number of valence electrons, what is the correct formula when nitrogen bonds to hydrogen? A) NH2 B) NH3 C) NH4 D) N2H

Can all waves be distorted, deflected, or changed? Explain your response.

External fertilization is common for organisms that live in A. trees B. water C. deserts D. open feilds

What happens to the velocity of a sound wave in the air if the temperature of the air increases?

The gulf stream begins at the tip of Florida and flows up all the way to NW Europe causing what? A. The gulf stream does not go to NW Europe. B. colder climate C. storms D. warmer climate