Understanding Physics Concepts

What is the SI base unit for mass?

• ounce

• pound

• gram

• kilogram

Which unit prefix represents one millionth?

• micro

• kilo

• milli

• centi

How many significant figures are in the number 0.00456?

• 3

• 4

• 2

• 5

What is the formula to calculate the period of a simple pendulum?

• T = L/g

• T = 2π(L/g)

• T = √(g/L)

• T = 2π√(L/g)

If a pendulum swings back and forth in 2 seconds, what is its period?

• 4 seconds

• 2 seconds

• 1 second

• 3 seconds

What is the SI base unit for length?

• centimeter

• kilometer

• meter

• millimeter

What prefix corresponds to 10^3?

• centi

• mega

• kilo

• giga

How do you determine the number of significant figures in a measurement?

• Only consider the first digit of the measurement.

• Count only the non-zero digits.

• Count all non-zero digits, zeros between them, and trailing zeros in decimal numbers.

• Ignore all zeros in the measurement.

What is the effect of increasing the length of a pendulum on its period?

• Increasing the length of a pendulum decreases its period.

• Increasing the length of a pendulum makes its period constant.

• The length of a pendulum has no effect on its period.

• Increasing the length of a pendulum increases its period.

What is the SI base unit for time?

• hour

• day

• second

• minute