Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.

Start Practicing

Worksheet: Unit Conversions

Q1:

Soccer fields vary in size. A large soccer field is 115 m long and 85.0 m wide. What is its area in square feet? (Assume that 1 = 3 . 2 8 1 m f t .)

  • A 1 . 5 0 × 1 0 5 ft2
  • B 3 . 2 1 × 1 0 5 ft2
  • C 1 . 5 0 × 1 0 4 ft2
  • D 1 . 0 5 × 1 0 5 ft2
  • E 1 . 3 1 × 1 0 5 ft2

Q2:

A complete rotation in a circle causes the rotator to face in the same direction after the rotation as before it. The angle rotated through is 2 𝜋 radians, which equals 3 6 0 . How many radians is 1 . 0 equal to?

Q3:

If your heart rate is 150 beats per minute during strenuous exercise, what is the time per beat in seconds?

Q4:

Light travels 9 Pm per year. Calculate the speed of light in meters per second. Use a value of 3 × 1 0 7 s for the duration of a year.

  • A 8 × 1 0 5 m/s
  • B 3 × 1 0 9 m/s
  • C 1 × 1 0 7 m/s
  • D 3 × 1 0 8 m/s
  • E 3 × 1 0 1 8 m/s

Q5:

A man has a mass of 85.2 kg. State this mass in lb to three significant figure precision.

Q6:

Gold is sold by the troy ounce. A troy ounce equals 31.103 g. What is the volume of 1 troy ounce of pure gold? Use a value of 1 . 9 3 4 × 1 0 4 kg/m3 for the density of pure gold.

Q7:

Considering an average of 80 heart beats of a person per minute, on average, how many heart beats does a person have in a year?

Q8:

What is the possible drift of a clock that is accurate to within one second per year?

  • A 1 0 6
  • B 1 0 8
  • C 1 0 9
  • D 1 0 7
  • E 1 0 1 0

Q9:

The speed limit on some interstate highways is roughly 100 km/h.

What is this in meters per second?

How many miles per hour is this?

Note: 1 mile = 1 . 6 k m .

Q10:

An electron has a mass of 9 . 1 1 × 1 0 3 1 kg. An alpha-particle has a mass of 6 . 6 4 × 1 0 2 7 kg.

What is the mass of an alpha-particle in electron masses?

Q11:

N2 gas has a molar mass of 28.0 g/mol, and CO2 gas has a molar mass of 44.0 g/mol.

How many moles are in 0.0500 g of N2 gas?

  • A 1 . 9 7 × 1 0 3
  • B 1 . 5 1 × 1 0 3
  • C 2 . 1 5 × 1 0 3
  • D 1 . 7 9 × 1 0 3
  • E 2 . 5 0 × 1 0 3

How many moles are in 10.0 g of CO2 gas?

How many molecules are in 0.0500 g of N2 gas?

  • A 1 . 0 5 × 1 0 2 1
  • B 0 . 9 9 2 × 1 0 2 1
  • C 1 . 0 8 × 1 0 2 1
  • D 0 . 9 9 9 × 1 0 2 1
  • E 1 . 0 3 × 1 0 2 1

How many molecules are in 10.0 g of CO2 gas?

  • A 1 . 3 7 × 1 0 2 3
  • B 1 . 5 5 × 1 0 2 3
  • C 1 . 5 0 × 1 0 2 3
  • D 1 . 3 1 × 1 0 2 3
  • E 1 . 4 2 × 1 0 2 3

Q12:

A car is traveling at a speed of 42 m/s. What is its speed in kilometers per hour?

  • A 420 km/h
  • B 160 km/h
  • C 100 km/h
  • D 150 km/h
  • E 130 km/h

Q13:

How many nm is 100 angstroms equivalent to?

Q14:

Mount Everest, at 2 9 0 2 8 ft, is the tallest mountain on Earth. What is its height in kilometers? (Assume that 1 = 3 . 2 8 1 m f t .)

Q15:

If 1 = 0 . 2 2 4 7 N l b f , how many newtons of force is equivalent to 1 lbf?

Q16:

What is the height in meters of a person who is 6.00 ft 2.00 in tall?

Q17:

What Kelvin temperature is equivalent to 32 degrees Fahrenheit? Answer to three significant figure precision.

Q18:

A commonly used unit of mass in the English system is the pound-mass, abbreviated lb, where 1 = 0 . 4 5 4 l b k g . What is the density of water in pound-mass per cubic foot?

1 = 0 . 3 0 4 8 f o o t m .

Density of water = 1 0 0 0 kg/m3.

Q19:

A light-nanosecond is the distance that light travels in a vacuum in exactly 1 ns. How many light-nanoseconds equal 1 foot if a foot is equal to 0.3048 m? Use 3 . 0 0 × 1 0 8 m/s for the speed of light in a vacuum.

  • A 3 . 3 3 × 1 0 9 light-nanoseconds
  • B 3 . 0 0 × 1 0 8 light-nanoseconds
  • C 9 . 1 4 × 1 0 7 light-nanoseconds
  • D1.02 light-nanoseconds
  • E 0.98 light-nanoseconds

Q20:

Football is played on a 115-yd-long field. How long is the field in meters? Assume that 1 = 3 . 2 8 1 m f t and 1 = 3 y d f t .

Q21:

1 fluid ounce is equal to approximately 30 mL. A can of soda pop has a volume of 12 fl oz. What is the volume of a can of soda pop in cubic meters?

  • A 0.36 m3
  • B 2 . 5 × 1 0 3 m3
  • C 2 . 5 × 1 0 4 m3
  • D 3 . 6 × 1 0 4 m3
  • E 0 . 3 6 × 1 0 3 m3

Q22:

Restate 4 . 7 9 × 1 0 5 kg using a metric prefix such that the resulting number is greater than one but less than one thousand.

Q23:

The speed of sound is measured to be 338 m/s on a particular day. What is this speed in km/h?

Q24:

Light travels at a speed of 3 × 1 0 8 m/s. A light-second is the distance light travels in 1 second. If the Sun is 1 . 5 × 1 0 1 1 m from Earth, how far away is it in light-seconds?

Q25:

What is 1.0 m/s in kilometers per hour?