3. Imagine that you had a large rocket of mass 1500 kg, and you wanted to get that rocket from rest to a speed of 300 meters per second.
a) How much energy would the rocket fuel have to deliver through combustion in order to do this?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?