What is the major source of energy for humans

Which of the following would be considered basic science questions? A. How can cars be made safer? B. What is the best way to improve a gas engine? C. Why do many birds have colorful feathers? D. What are the stages in the life cycle of a star?

What causes seasons to occur in certain zones? a. tilt of Earth axis b. height of mountains c. longitude of the zone d. amount of rainfall

How much force is required to accelerate a 1,800kg truck at 3m/s/s

What could easily be converted into heat, light, or motion? A) Steel B) Iron C) Electricity D) Energy

The Ptolemaic theory of the universe was disproved by a. Descartes. b. Kepler. c. Copernicus. d. Newton.

The power of a machine measures A. its rate of doing work. B. its strength. C. the force it produces. D. the work it does.

the acceleration of gravity is 28 times on sun than earth. Imagine there is a space suit that let you stand on sun. Calculate the weight of 100 kg person on earth in newtons

A force of 20 n acts upon a 5 kg block, calculate acceleration of the object

What resultant force is needed to accelerate a train of mass 3.41000000 kg from rest to 15.0ms in exactly 20s

I to fall in love with someone or to at least get a boyfriend