Themes, topics - math word problems - page 21 of 159
Number of problems found: 3172
- Temperature 81892
By how much °C will the temperature of an iron key weighing 0.004 t change if it receives 360,000 J of heat? ( c of iron is 450 J/kg.°C ) - Temperature 81891
Calculate the mass heat capacity of a steel body weighing 2 kg, which was heated from an initial temperature of 15°C to 80°C by supplying 60 kJ of heat. - Makarska 81876
The motor boat departs from Baška Voda at 19:15 and arrives in Makarska at an average speed of 30 km/h at 20:00. However, a group of tourists from Germany must be in Makarska a third of the time earlier. What should the average speed of the boat be? - Identical 81873 Three identical pumps empty the tank in 1.8 hours. How long will it take 5 pumps to empty this tank?
- Weighs 81870
The ring weighs 28g and has a volume of 2cm³ to find out if it is made of pure gold. - Simultaneously 81863
The speeds of two motor vehicles are in the ratio 7:4. How many kilometers will the slower vehicle travel simultaneously, if the faster vehicle travels 52.5 km? - Municipal 81852
Six workers repair 48 meters of municipal road in 2 days. How many days will 3 workers with the same output repair 60 meters of the road? - Surroundings 81843
A copper cylinder weighing 15 kg transferred 114.9 kJ of heat to the surroundings during cooling. By how many degrees Celsius did it cool down? - KiloJoules energy
In the washing machine, 6 liters of water were heated from a temperature of 22 degrees to 62 degrees. Find out the weight of 6 liters of water. What heat (in kJ= kiloJoules) did the water receive?
- Classroom 81784
The classroom is 6.8 m wide. Determine its width on a 1:50 scale plan. - Determine 81783
Determine the scale of the plan if the actual length of 51m is shown on the plan by a segment of length 3cm. - Borrower 81777
You lent €400. The borrower paid you €440 back in 5 months. What was the yield on this loan? - Interest 81773 How much will the deposit grow at an interest rate of 10% p.d. a. for 72 days by €6?
- Friends 81769
Four guys would finish washing cars at a gas station in 4 hours. After one hour, two more friends come to help them. How long will it take to finish the car wash?
- Machine 81767 Four lathes machine 32 parts in 1 hour. How many parts does 1 turner machine have in 2 hours?
- Recommended: 81764
If the interval between bus arrivals is shortened by one minute, there will be 5 more buses on this route per hour. How many buses ran on the original route? (Recommended: solve with an experiment or a table where we look for the dependence between the le - Perpendicular 81758
Distribute the force of magnitude F = 100 N into two perpendicular components with magnitudes F1 and F2 so that the angle between forces F1 and F is 43°52'. - Cylindrical 81748
The hydrostatic pressure at the bottom of a cylindrical water container is 10 kPa. The bottom has an area of 0.25m². How much pressure does the water exert on the bottom? - Represents 81745 2.5 cm on the map represents 6.25 km in reality. Set the scale of the map.
A cooker connected to a 40 V voltage source draws a current of 0.5 A. DOES THE SIZE OF THE ELECTRICAL WORK DETERMINE WHICH COOKER DOES IN 3 MINUTES?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
