R20s - Sci FQ 03-04

How does a negative exponent affect the value of a number in scientific notation?It makes the number larger by adding powers of 10

• It makes the number smaller by dividing by powers of 10.

• . It makes the number larger by multiplying by itself

• It makes the number smaller by dividing by powers of 10.

• It makes the number larger by multiplying by powers of 10

• It makes the number smaller by dividing by itself

2. Which metric prefix represents 1,000?

• kilo

• milli

• micro

• mega

• centi

How many fundamental forces exist in the universe?

• 4

• 1

• 2

• 3

What is the fundamental force that pulls mass toward other masses?

• a. electromagnetic force

• b. strong nuclear force

• c. gravitational force

• d. centrifugal force

• e. weak nuclear force

. How would the gravitational force between two objects change if both objects’ masses doubled?

• a. It would become two times stronger.

• b. It would become four times stronger.

• c. It would become four times weaker.

• d. It would become two times weaker.

• e. Its strength would stay the same.

Which type of relationship exists between gravitational force and distance?

• a. direct

• b. quadratic

• c. inverse-square

• d. inverse

• cubic

The gravitational constant is also called

• a. Van de Graaff’s constant

• b. Franklin’s constant

• c. Coulomb’s constant

• d. Newton’s constant

• e. Faraday’s constant

Which equation BEST describes the strength of the electric force? (I'm NOT using the equation editor so you're stuck with this gang)

• a. F = kq/r

• b. F = kq₁q₂/r

• c. F = kr² /q

• d. F = kq₁q₂/r²

• e. F = kq/r²

How would the electric force between two charges change if the distance between them doubled?

• a. It would become two times weaker.

• b. It would become two times stronger.

• c. Its strength would stay the same.

• d. It would become four times stronger.

• e. It would become four times weaker.

Which instrument did Coulomb use to study the electric force?

• c. torsion balance

• a. gas chromatograph

• b. voltmeter

• d. spring scale

• e. barometer