Themes, topics - math word problems - page 61 of 167
Number of problems found: 3330
- Resistance 44911
Determine the resistance of a bulb whose wattage at a source voltage of 220 V is 15 W. - Designated 44741
Cathedral height 110m, sphere weight 6000kg, dome diameter 43m, crane arm length 25m a) what was the diameter of this sphere? b) how much mechanical work had to be done to lift it to the designated place? - Transmission of electricity
The electric field performs work 1610 J in the transmission of electric charge of 7 Coulombs between the heating coil terminals. Calculate the voltage between the terminals. - Milk cream
How many percent of whipped cream do we make if we mix 41 liters of 38.8% whipped cream and 9 liters of 3.8% milk? (Percent means a percentage of milk fat). - Approximately 44671
A granite monument in the shape of a pyramid with a rectangular base will be placed in the city park. The base dimensions are 60 cm and 110 cm, and the pyramid height is 220 cm. The density of granite is approximately 2800 kg/m³. Calculate the weight of t - Future value investment
Poseidon deposited 2,747 golden drachmas in a Mount Olympus college savings account to ensure Percy could attend college. It pays 0.04 (percent in decimal form) annual interest. After 11 years, he withdraws the money. How much more money would he have if - Heat transfer
We placed a lead object weighing 0.4 kg and 250°C in 0.4 L water. What was the initial temperature of water t2 if the object's temperature and the water after reaching equilibrium was 35°C? We assume that the heat exchange occurred only between the lead o
- Fertilizer
I have 4 liters of 10% fertilizer. How much water must I add to have a 2% solution? - Three
Three pavers will pave the sidewalk in 4 days. How long does it take for two tiles to pave the same sidewalk? - Grams 44441
How many grams of 70% and 45% acid must be mixed to form 300 grams of 60% acid? - Carpenters 44401
Eight carpenters will make 30 chairs in 2 days. In how many days will ten carpenters make 72 chairs? - Minutes 44391
The car covered the track 157.5 km in 2 hours and 15 minutes. How fast was he moving? - Dimensions 44361
On mill paper, the dimensions are 11 * 7.5 mm, and the external dimensions of the sauna are 4.4 * 3 m. On what scale is the plan drawn on graph paper? - Calculate 44351
Calculate how many grams of iodine and ethanol are needed to prepare 200 grams of 6% iodine in ethanol solution. - The output
The output voltage of the transformer is 880 V. The secondary coil has 1200 turns. Transformation ratio k = 4. Find the voltage to which the primary coil is connected. How many turns does the primary coil have if a current of 1 A flows through it? What cu
- The transformer The transformer's primary coil has 1100 turns and is connected to a voltage of 220 V. How many turns does the secondary coil have when it has a voltage of 55 V? Determine the transformation ratio and decide what the transformation is.
- Identical 44271
Ten identical trucks will take 240 tons of concrete to build the dam in 3 working days. How many tons of concrete will seven trucks take to make the dam in 5 days? - The car The car weight 1280 kg and increased its speed from 7.3 m/s to 63 km/h on a track of 37.2 m. What force did the car engine have to exert?
- Painters 44121
Two painters will paint the bridge in 12 days. How many painters must we employ if we need to paint the bridge in 8 days? - Saturday 44091
John and Vilo agreed that on Saturday at 7:00 AM, they would go on a trip on their bikes. John fell asleep and started an hour later. When and where will the friends meet? We know that Vilo walked at an average speed of 15 km/h and John at 25 km/h.
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