Why are time machines not invented?

What kind of gas is fart

Why do virtually all the galaxies in the universe appear to be moving away from our own?

How much force does it take to accelerate a 20 kg scooter speed from 10 m/s to 20 m/s? a. 1000 j b. 3000 j c. 4000 j d. 100 j

A chemist must dilute 58.00ml of 13.5 aqueous silver (II) oxide solution until the concentration falls to 5.00M. He'll do this by adding distilled water to the solution until it reaches a certain final volume.

A solid nonconducting sphere of radius R carries a charge Q distributed uniformly throughout its volume. At a certain distance rl (r (A) E/8 (B) E/2 (C) 2E (D) 8E (E) E

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

A tow truck pulls a 500 kg car so that the car accelerates 2 m/s2. What is the net force on the car? 250 N 498 N 1000 N 502 N

Which force keeps you near earths surface?

Name one process that requires a force in the human body.