How can you tell that a measurement is a vector?

When burning a fire, since there is only ash left in the end, so matter is destroyed. this proves that fire is one of the only ways the law of conservation of matter can be broken?

Which cell can produce hydrogen gas fuel by using electricity to decompose water?

In how many ways does earth move simultaneously within our solar system? A.) 1 B.) 2 C.) 3 D.) 4

I'm the absence of friction, gravity and all other external forces what kind of speed will an object display if it travels from the bottom to the top of an incline plane

Anyone have the answers to lesson 2 physical science semester exam b?

Which training principle does this scenario represent?

What is the wavelength of a wave? A. the amount of time that one full cycle takes. B. the distance from the beginning to the end of a cycle. C. the amount of cycles that occur in a given time. D.

Two football players collide on the field. Before the collision, their total momentum was 450 kgm/s to the north. What is their total momentum after the collision? A. More than 450 kgm/s north B. 450 kgm/s north C. Less than 450 kgm/s north D.

Jane and John Doppler effect

If you combine 430.0 ml of water at 25.00 °c and 140.0 ml of water at 95.00 °c, what is the final temperature of the mixture? use 1.00 g/ml as the density of water. s