Physical quantities - math word problems - page 128 of 177
Number of problems found: 3535
- Barrel water
The cylindrical barrel is 1.2 m high, and the diameter of its base is 0.6 m. How many hectoliters of water will fit in the barrel? What is the smallest amount of sheet metal needed for its production? (we count both bases) - Board paint calculation
Štěpán painted a block-shaped steel board measuring 2.2 m, 1.5 m, and 1.6 m twice with a protective coating. How many kilograms of paint would he consume if he used 120 g of paint per 1 m²? - Standard
What is the rotational speed in revolutions per minute of a two-pole synchronous motor connected to a standard network with a frequency of 50 Hz? - Density of Titanium
The body of titanium weighs 227 kg and has a volume of 0.05 m³. What is the density? - Map scale setting
2.5 cm on the map represents 6.25 km in reality. Set the scale of the map. - Hiker average speed
A hiker walked a 9 km course in 1 hour and 30 minutes. What was his average speed? - Karolína race speed
Caroline ran 1500 m in the gym in 7 min 23 s. What was her average speed? - The change
The change in momentum of an unknown object was 56 Ns. What was the force applied when it moved a distance of 2 m in 10 seconds? - Wood statuette density
Calculate the density of the wood from which the statuette is made. Its volume is 32000 cm3, and it weighs 20800 g. - Car speed
The car covered a distance of 84 kilometers in 20 minutes. Determine the speed of the vehicle. - Bulb resistance
Determine the resistance of a bulb whose wattage at a source voltage of 220 V is 15 W. - Sidewalk paving time
Two workers will pave a 20-meter-long sidewalk in 5 days. Determine how long it would take to pave the sidewalk: a) 4 workers b) 5 workers c) 10 workers - Cycling distance
We cycled 8 km, a third of the distance we traveled. How many kilometers do we have to travel? - Range, mean, median
The ages of 7 employees in an office are given below 32, 42, 30, 32, 33, 23, 32 Find a) Range b) Mean c) Median - Highway speed limit
The highway section is 25 km long, and the maximum permitted speed is 110 km/h. The driver covered this section in 12 minutes. Did he exceed the speed limit? - Mechanical energy
A stone with a mass of 2 kg falls in free fall from a tower with a height of 80 m. What is its kinetic energy, and what is its potential energy: a) At the beginning of the fall, b) In 1 s from the beginning of the fall, c) Upon impact, d) What is its mech - Board weight Calculate the weight of a wooden board 18 dm long, two dm wide, and 0.3 dm thick if you know that 1 m³ of wood weighs 660 kg.
- Height estimation men
What is the smallest number of men we would have to choose to estimate the mean height of men with an accuracy of +, - 0.5 cm, and 95% confidence, assuming a standard deviation of 8 cm? - Current in the bulb
The bulb is rated 6 V, 0.2 A. Determine the current rating of the bulb. - Aluminum resistance temperature
The aluminum line has a resistance of 7.6 Ω at -10˚C. What will be its resistance at a temperature of + 50˚C?
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