MCHSPS Final Review

Front

What type of friction exists between the wheels of a train and the tracks?

Back

Rolling friction is the type of friction that occurs when wheels roll over a surface.

Front

What is the chemical formula for magnesium acetate?

Back

The chemical formula for magnesium acetate is Mg(C₂H₃O₂)₂.

Front

What is the half-life of cerium-143?

Back

The half-life of cerium-143 is 33 hours.

Front

How long will it take for a 100-gram sample of cerium-143 to decay to 6.25 grams?

Back

It will take 132 hours for a 100-gram sample of cerium-143 to decay to 6.25 grams.

Front

What does a constant speed graph look like?

Back

A constant speed graph is a straight line, indicating that the object is moving at a steady pace.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change the motion of an object, while unbalanced forces cause an object to accelerate.

Front

What is an example of rolling friction?

Back

An example of rolling friction is a bicycle tire rolling on a road.

Front

What is the significance of a half-life in radioactive decay?

Back

Half-life is the time required for half of the radioactive atoms in a sample to decay.

Front

What does it mean if forces are unbalanced?

Back

If forces are unbalanced, it means there is a net force acting on an object, causing it to accelerate.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.