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

What are we calculating when we calculate expected frequencies? What is the reason for calculating expected frequencies the way we do? In laymen's terms, what do expected frequencies tell us?

What is an aerodynamic shape? What is the definition?

To produce the pressure gradient responsible for inspiration, thoracic volume must first increase in order to decrease intrapulmonary pressure relative to atmospheric pressure. True or False

Which law of motion accounts for the following statement? "An apple accelerates as it falls from a tree." first law second law third law

Convert 32 kilometers to nanometers

A car traveled 176 miles on 6.4 gallons of fuel the car averaged how many miles per gallon

Which of these describes how heat is transferred by radiation? A.) Warm air rises and takes heat with it; eventually it cools and sinks. B.) Sunlight travels through space without the aid of fluids or solids. C.

A body is moving with a velocity of 12m/s and it comes to rest in 2 minutes, what was the acceleration?

How can you find magnitude of velocity from a displacement time graph of an object?

Consider two rocks with masses of 1 and ten kilograms. What is the relation between their inertia's? Between their masses? Between their weights on earth?