Answer:
Must be put in to break the bonds in the reactants and the energy that is released upon making the bonds in the products.
Explanation:
The heat energy is absorbed to break the chemical bonds, which are responsible for the attractive interactions between atoms and molecules, and which gives stability to chemical compounds. While the heat energy is released upon making the bonds in the chemical compounds.
The color for the moon is gray because if you would look outside when it is dark you would see the moon cloor gray
Answer:
It exerts an unbalanced force on the satellite.
Explanation:
The forces on the satellite are unbalanced. The centripetal force changes the direction of the satellite, from a straight line to a closed loop around the Earth.
Answer:
Total time to complete the race = 45 sec
Explanation:
We have given that each lap is 60 m long
Average speed for the first lap = 2 m/sec
So time taken to complete the first lap 
Average speed for second lap = 2 m/sec
So time taken to cover the second lap 
So total time to complete the race = 30 +15 =45 sec
I think basically anything you throw vertically, from that point to its maximum height where you get a half semi circle.. or if you throw a ball horizontally, from that point to the point it comes to rest.
