Practice problems of the unit conversion - page 4 of 111
The International System of Units (SI) is the standard system of units used in most countries around the world. It is based on seven base units: the meter for length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin for temperature, the mole for amount of substance, and the candela for luminous intensity. These units can be converted to other units using conversion factors, such as the relationship between meters and centimeters (1 meter = 100 centimeters). Other common SI unit conversions include:1 liter = 1000 milliliters
1 gram = 1000 milligrams
1 joule = 1 watt-second
1 newton = 1 kilogram-meter per second squared
In the SI system, units can be multiplied or divided by powers of ten to create larger or smaller units. These multiples are called prefixes. The most common prefixes and their meanings are:
mega- (M) = 1,000,000 (e.g. 1 megahertz = 1,000,000 hertz)
kilo- (k) = 1000 (e.g. 1 kilogram = 1000 grams)
centi- (c) = 0.01 (e.g. 1 centimeter = 0.01 meters)
milli- (m) = 0.001 (e.g. 1 milliliter = 0.001 liters)
micro- (µ) = 0.000001 (e.g. 1 microgram = 0.000001 grams)
nano- (n) = 0.000000001 (e.g. 1 nanosecond = 0.000000001 seconds)
It is important to note that, when using these prefixes, the prefix should be written before the unit symbol.
Number of problems found: 2207
- Cross-section 6663
The electric current is 500mA. How much electric charge will pass through the cross-section of the conductor in 4 s? - Three-quarters 2705
The bus runs 5 km in 8 minutes. How many kilometers will it drive in three-quarters of an hour at a constant speed? - Day
What part of the day is 23 hours 22 minutes? Express as a decimal number. - The speed 2
The speed of an electric locomotive is 90 km/h. Express this speed in m/s. - A swimming pool
A swimming pool holds 30000 lt of water. How many gallons does it hold? 1 gallon= 4.55 lt - One kilogram
The apple weighs 125 grams and is half an apple. How many apples weigh 1 kilogram? - Colza
The agricultural cooperative harvested 525 ares of colza, which received 5.6 tons of seeds. Calculate the yield per hectare. - Map 3
Map scale is M = 1: 20000 . Two cottages which are shown on the map are actually 20 km away. What is its distance on the map? - Civil protection
Students on civil protection exercise went 5800 m long trip. How many kilometers is it approximately? - Kilometers 53373
The car covered a distance of 84 kilometers in 20 minutes. Determine the speed of the vehicle. - Deciliters 9041
How many cups with a volume of 2.5 deciliters will you fill from 1 liter of milk? - Container 6489
I have a 20 cubic meter container. How many tons of green BIO meat will fit in the container? - Kilometers 5008
If the city is far from the city and is 15 kilometers long, and the scale of the map is 1:300000, what is the distance on the map? - Write a blog
You spend 2 1/2 hours online. You spend 1/5 of that time writing a blog. How long do you spend writing that blog? - Hr to min
Sue biked to school in 5/12 of an hour. How many minutes did it take her to ride to school? - Liter of gold
What weight does one dm³ of gold have? Gold density is 19,300 kg/m3 - Knight
Knight passed 36 km long track in 144 minutes. What was his average speed? - Container 67524
One milk container weighs 80g. What is the weight of a package of 12-liter milk cartons? - 15.38
15.38 mg of vitamin C/oz. How much is vitamin C in an orange that weighs 635 oz? - Substance 40223
A body made of a substance has a volume of 0.860 m³ and a weight of 0.004 t. What is the density of this substance?
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