Practice problems of the unit conversion - page 17 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: 2238
- Completely 37433
Find the magnitude of the buoyancy force acting on a body with a volume of 1 dm³ whole immersed: a) in water b) in ethanol. - Half-kilo 30151
We have 25 kg of roasted coffee in stock in six bags. I want to turn all the coffee into half-kilo packages for sale. Will we make all the coffee? - Motorcyclist 17921
The motorcyclist travels at a speed of 48 km/h. Will he drive at this speed in 400 minutes? Km - Centimeters 13791
From the package, which contained 30 meters of fabric, the tailor cut 285 centimeters of fabric nine times for sewing work coats. How many meters of cloth is left?
- Yesterday 13711
If the day before yesterday was the day of the week, what day of the week would it be from today in 50 days? (0 = Monday, 6 = Sunday) - Speedometer 8781
The car's speedometer showed a constant speed of 60 km / h for 5 minutes. What path did the car cover during this time? - Arrived 5365
The truck arrived in Brno at 6 pm, 14 minutes and 50 seconds. The journey took 5 hours, 17 minutes 20 seconds. What time did the truck go? - Hectoliters 4817
There are 1.5 hectoliters of rainwater in the barrel. Two-fifths of the water passed from the barrel while watering the garden. How many liters of water remained in the barrel? - Five-kilogram 4112
Fertilizer for gardeners contains the following trace elements: bor. ... ..minimum 0.3promile weight. What is the smallest weight of each trace element in a five-kilogram fertilizer package?
- Percentage 3549
Fresh weighs 8 kg. After drying, their weight was 96 dag. What percentage of water do fresh mushrooms contain? - Measures 3499
What is the actual length of the road, which measures 5 cm on the map, if the scale is: a / 1:500, b / 1:1,000 c / 1:1,000,000? - Millimeters - saw
A fine tooth of a saw has 60 teeth per 2 inches (1 inch = 2.54 cm). What is the tooth pitch in millimeters (rounded to hundredths of mm)? - Current in the conductor
Calculate the current in the conductor (in mA) if it is connected to a 4.5 V voltage source and its resistance is 20 (ohm). - Weight
The kilogram weight has a volume of 116 ml. From which material is it probably made? Use substance density tables, e. G. mathematical-physical-chemical tables.
- Cooker
A current of 2A passes through the immersion cooker at a voltage of 230V. What work do the electric field forces do in 2 minutes? - Scale of the map
The distance between the two cities is actually 30 km, and the map is 6 cm. What is the scale of the map? - Salad
We need two-tenths kg of a carrot, one-tenth of peas, and three-tenths tomatoes to make a salad. Express the fraction of the weight of the vegetables to be salad. Convert the result to grams. - Resistance
Determine the bulb's resistance with the current 200 mA and is in a regular lamp (230V). - Small city
The length of the street is 230 m. What will its image length be on the plan at a scale of 1:2500?
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