Practice problems of the unit conversion - page 13 of 113
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: 2253
- Heart as pump
The heart pumps out 5.17 liters of blood in 1 minute. How many liters of blood are pumped per hour, and how much per day? - Aircraft nose down
How long will an airliner fall from a height of 10000 m at a speed of 1,000 km/h? - Compare
What's more? Fill in the signs of equality or inequality: 12 000mg ... 0,12kg 12t ... 0,12kg 14kg ... 0,014t 423mg ... 0,423kg 12,3g ... 0,001 23kg 89g ... 89 000kg - Uranium ore
Uranium ore contains 0.2% pure uranium, and pure uranium includes 0.07% fissile uranium. How many grams of fissile uranium has 2800 ton of uranium ore?
- Steps
An adult step has a length of 76 cm. How many steps will he go distance 50 meters? How many meters does he go when he makes 700 steps? - Pump
What power does a pump output to move 4853 hl of water to a height of 31 m for 8 hours? - Distance 82240
On a map with a scale of 1:100,000, two lakes are 20 cm apart. What is their distance on a map with a scale of 1:40,000? - Two-hundred-liter 82230
What is the weight of a two-hundred-liter barrel with ethanol if the empty barrel weighs 50 kg? - 45-minute 82169
I have 38 lessons that last 70 minutes. How many teaching hours are there in terms of 45-minute lessons?
- Traveled 80715
A mass point traveled a distance of 600 m in 2 minutes in uniform motion. How fast was it moving? - Calculate 79684
Calculate the density of wood, which is a board with a volume of 0.2 cubic meters weighing 100 kg. - Yesterday 79344
Petr played Minecraft for 2 hours yesterday. Pavel played 10% longer. How many minutes did Pavel play? - Minutes 63474
The sunsets in the morning at 4:52 and sets at 19:37. How many minutes can't we see Sun in the sky? - Acceleration 61824
On a sphere weighing 100 g, which lies on a horizontal plate, a force acts in the horizontal direction, which gives it an acceleration of 20 cm. s ^ -2. Find the magnitude of the force.
- Atmospheric 54401
An open manometer is connected to the gas tank, in which the difference in water levels in both arms is 54.5 cm. Atmospheric pressure is 105 Pa. Calculate the gas pressure. - Marked 43771
The pool is 50 m long and 20 m wide. How will it be marked on the plan on a scale of 1:200? - Distance 41461
Peter has a step debt of 60 cm. How many steps does he have to take to measure a debt distance of 12 meters? - Travel 40801
The Earth is moving at a speed of 29.8 km/s, and what track will the Earth travel in an hour? - Kilometers 30801
The tourist walked 3km in 45 minutes: how many kilometers will he travel in 2 hours and 30 minutes?
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