Time - math word problems - page 23 of 171
Number of problems found: 3410
- Calorimetric equation
A 200 g aluminium cylinder at 180 °C was dropped into 3 kg of water at 25 °C. At what temperature did the mixture stabilise? The specific heat capacity of water is 4,200 J/(kg·°C) and of aluminium is 896 J/(kg·°C). - Elevator efficiency
To what height will an elevator motor with a power of 25 kW and an efficiency of 48.6% transport a cabin weighing 445 kg with seven people (average mass 64 kg per person) in 54 seconds? - 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? - Height from Impact Velocity
From what height did a body weighing 9.8 kg fall if it hit the surface at a speed of 100 km/h? - Minutes in Fractional Hour
How many minutes is five sixths of half an hour? - Motor efficiency Calculate the power input of a motor operating at an efficiency of 58% that lifts an elevator car (weighing 390 kg) with twenty boxes (each weighing 25 kg) to a height of 85 m in 29 seconds.
- Acceleration - gravity
What is the gravitational acceleration if a body with a mass of 5.8 kg fell from 68 metres and hit the ground at a speed of 60 km/h? - Borrowed
Mr. Douda borrowed 200,000 Sk from the bank at an annual interest rate of 15.4%. He will repay the loan after four years. How many korunas will he have to repay in total? - Emptying a tank
A water tank can be emptied by the first pump in 12 hours, by the second in 9 hours, and by the third in 4 hours. How many hours will it take to empty the tank if all 3 pumps are turned on simultaneously? - Chord 24
A chord of length t = r√2 divides a circle with radius r into two circular segments. What is the ratio of the areas of these two segments? - Insulating a house
Five workers are insulating a house at a pace that would allow them to finish the job in 18 days. After three days of work, two workers were called away to another construction site. In how many more days will the remaining workers finish the job? - Advertising column
An advertising column has the shape of a triangular prism. The height of the prism is 3.5 metres, and the lengths of the base edges are 1.1 m, 2 m, and 2 m. The lateral surface of the prism forms the advertising space. The town pays 35,000 CZK for its pro - Classmates 2 Classmates Peter, Vlado, and Michael arrived late to school. Peter was 1/4 hour late, Vlado was 2/8 hours late, and Michael was 4/16 hours late. How many minutes late was each of them?
- Minutes in Percentage How many minutes is 45% of four hours?
- Client A bank client had €1,320 deposited in her account throughout the year. At the end of the year, €33 in interest was credited to the account. What annual interest rate was applied?
- Write 18
Write as a fraction what part of a day Tina spent on various activities: a) sleep: 9 hours, b) school: 6 hours, c) television: 0.5 hours, d) studying: 1.5 hours. - One-time payment
The price of a refrigerator is 7,500 CZK for a one-time payment. If the customer chooses to pay in instalments, they pay 800 CZK per month for 1 year. By what percentage does the customer pay more for the refrigerator when purchasing in instalments compar - Water Flow Rate
In one minute, 3 and 1 and a half liters of water flow out. How many liters of water will flow out in 2 and 1 half minutes? - Turbine
A turbine in a small hydroelectric power plant requires a minimum supply of 9600 liters of water every second to function. A supply channel with a rectangular cross-section leads to the power plant, in which water flows at a speed of 10 m/s. The width of - Atmospheric pressure
How and by how much hPa will the atmospheric pressure change when we take the cable car from Skalnate Pleso to Lomnický štít? The altitudes of the cable car stations are 1754 m above sea level and 2634 m above sea level.
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