Dimensional Analysis Quick Check

Question 1

How many centimeters are in 250 km?

Answer 1

25,000,000 cm or 2.5 x 107 cm

Question 2

The Cassini probe heading toward Saturn will reach speeds of 5.2 kilometers per second. How many meters per minute would it travel at this speed?

Answer 2

312,000 m/min or 3.12 x 105 m/min

Question 3

American cars use about 600,000,000 gallons of oil per year. How many liters of oil do American cars use per year? (1 L = 0.908 quart; 1 gallon = 4 quarts)

Answer 3

2,643,171,806 L/yr or 2.643171806 x 109 L/yr

Question 4

How many seconds are in 24 hours?

Answer 4

86,400 s or 8.64 x 104 s