Practice problems of the unit conversion - page 20 of 112
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: 2236
- Apprentice 20753
The trained worker will do the work in 4 hours. The apprentice needs 6 hours for the same work. How many hours and minutes would they do this work if they worked together? - Average 6717
How many kg of coal can fit in 1 m³? Note - 1 m³ (1000 liters) of brown coal walnut 2 weighs, on average, 720 kg. - Strawberries 5074
Mom bought 3 kg of strawberries. He wants to divide them into eight parts and freeze them. How many kg do they have to weigh in one dose? - Resulting 4429
What will be the resulting volume V, if we mix liquids with volumes of 3hl and 200 cubic dm A) V = 0.32 cubic meters B) V = 0.50 m cubic C) V = 23hl D) V = 5m cubic - Potatoes 3346
2/5 q of potatoes were sold in the first hour, 5/6 q in the second hour, and 40 kg in the third hour. How many kilograms of potatoes were in total? - Successively 2380
The car drove successively 2.5x105 m, 1.4x107 mm, 8.6x107 dm, and finally 3x106 cm. What is the total mileage? - Fraction 4114
Express the fraction and decimal number of which part of the meter is: 120mm, 25cm, 7dm, 670mm, 48cm, 9.7dm. - Solve 7
Solve the Decimal Division Application. Round to the nearest tenth if needed. There are approximately 0.26 gallons in 1 liter. Determine how many liters are in 2,600 gallons. - A map 4
A map represents every 4 miles with 1 inch. If a school and a bank are 12 miles apart, how far apart are they on the map, in inches? - Packed sand
We need 5 kilograms of sand. When we went to the store, the bags of sand only stated the number of grams on the package. How many grams should we look for on the package of sand? (1 kilogram= 1,000 grams) A. 5,000 grams B. 50,000 grams C. 50 grams D. 500 - The fish
The fish vendor sells 1/7 kilos of bangus (milkfish) for 66.2 euro. If you will buy 9 2/8 kilos of bangus, how much will it cost? - City plan
The city planned to repair the highway section for 20 hours. Workers reduced this time by 20%. How long did the repair take? (express in hours and minutes) - Delayed clock
Michael put a new battery into his watch at midnight. However, they are 5 seconds late each minute. How many hours does the watch show in 24 hours? - Granules
Katy had two dogs. The first one ate a pack of granules a week, and the other two times longer. Katka bought them two bags of granules. How long does it last for both dogs? - Caleb
Caleb is making lemonade for a party. He has 5 gallons of lemonade. He puts 1/3 cubic inch of lemonade in a cup for each guest. How many guests are going to be at the party? - Wiring 2
Willie cut a piece of wire that was 3/8 of the total length of the wire. He cut another piece that was 9m long. The two pieces together were one-half of the total length of the wire. How long was the wire before he cut it? - Running
Joanne ran 8 1/2, Kyleigh 1 2/3, and John 6 3/4 miles in one day. How many miles did the girls run in 3 days? - Bronze medal
To produce 1 kg of bronze must be 0.95 kg copper, 0.04 kilograms of tin, and 0.01 kg zinc. The bronze medal weighs 8.5 g. How much copper, tin, and zinc does the medal have? - Alcohol
How many cubic centimeters of 96% alcohol is needed to obtain 0.75 liters of 40% alcohol? - Electronics: Resistors in parallel
Concerning calculating the resistance of the parallel combination of resistors: (1)/(R) = (1)/(R1) + (1)/(R2) Calculate the R, if R1 = 17Ω a R2 = 20Ω
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