What law states that when matter undergoes a physical or chemical change, no atoms are created or destroyed?

Which part of a mountain would have the lowest temp?

This is a measure of quantity of matter

What is ultrasound? What is its use in industry? Why can't we use longer wavelengths for such uses?

As a wave travels through a medium, it displaces the particle perpendicular to the motion of the wave. We can conclude that this is a a. longitudinal wave because of the direction that the wave travels. b.

How does subjustion change the ocean florr this is acctualy in science

How do repeater stations improve the quality of a broadcast?

What is the total number of atoms in the following formula? CaBr2 04

The Amazon River is in Europe. True or False

A microwave oven operating at 120 volts is used to heat a sandwich if the oven draws 12.5 amperes of current for 45 seconds what is the power dissipated by the oven?

Which of the transformers are step-up transformers? Which of the transformers are step-down transformers?