Physics Fall 2024 Final Exam Review

Front

Determine if the expression 4.3 x 10^{-4} = 0.000043 is equivalent or not equivalent.

Back

Not equivalent

Front

A material in which electrons are not able to move easily is a(n) __________.

Back

Insulator

Front

Large industrial magnets are often used to process trash before burial in a landfill. Which of the following materials would be attracted to the magnet? Electrum, Polyvinyl chloride (PVC), Steel (iron and carbon), Textiles (cotton and polyester).

Back

Steel (iron and carbon)

Front

Determine if the expression 8 x 10^{3} = 8,000 is equivalent or not equivalent.

Back

Equivalent

Front

Two electrons (-1.6 x 10^-19 C) are separated by an insulator at a distance of 0.10 mm. What is the electrostatic force between these electrons?

Back

-2.3 x 10^-20 N

Front

What is the definition of an insulator in physics?

Back

A material that does not allow electrons to move freely, preventing the flow of electric current.

Front

What is the formula for calculating electrostatic force between two charges?

Back

F = k * |q1 * q2| / r^2, where k is Coulomb's constant.

Front

What is the value of Coulomb's constant (k)?

Back

Approximately 8.99 x 10^9 N m²/C².

Front

What is the difference between a conductor and an insulator?

Back

A conductor allows the flow of electric current, while an insulator does not.

Front

What is scientific notation?

Back

A way of expressing numbers as a product of a coefficient and a power of ten.