Themes, topics - math word problems - page 67 of 167
Number of problems found: 3340
- Calculate 38563
Six equally powerful machines produce 870 parts in 14 hours. Calculate in how many hours 870 parts will have four such machines. - Free fall
How long and at what speed does the body fall to the ground during a free fall from a height of 35 m? - Solution 38451
Prepare 2 liters (kg) of a 3% salt solution in water. - Solution 38411
Prepare 250g of a 30% solution of hydrogen peroxide in water. - Salicylic 38401
Prepare 600 g of an 8% solution of salicylic acid. - Solution 38391 Prepare 100g of a 15% blue rock solution.
- Copper wire
What is the weight in kg of copper wire 200 m long with a diameter of 0.6 cm if the density of copper is 8.8 kg/dm³? - Minutes 38331
Two planes took off from Prague at one point. The first is flying north at a speed of 420 km/h, and the second is flying east at a speed of 560 km/h. How far apart will they be as the crow flies in 25 minutes of flight? - Bricklayer 38291
A bricklayer will lay 12 m³ of brickwork in 4 days if he works 7 hours a day. How many days will he lay 51 m³ of masonry if he works 8.5 hours daily? - Rotary motion
Find the orbital time, rotational frequency, and angular rate of the second and minute hands on the watch. - Mass point
Two equal forces of 30 Newtons act on a mass point. Find the magnitude of the resultant force if these forces form an angle of 42°. - Electrostatic
A proton with mass mp = 1.67.10-27 kg and electric charge e = 1.6.10-19 C, whose initial velocity was zero, is acted upon by a homogeneous electrostatic field of unknown intensity E. The proton moves in the direction of the lines of force and on a path s - Separated 38223
What is the intensity of the electric field at a point that lies in the middle between two point charges Q1 = 5.10-5 C and Q2 = 7.10-5 C, which is separated by r = 20 cm? The charges are placed in a vacuum. - Homogeneous 38201
The homogeneous roller weighs 7.36 kg and has a volume of 8 dm³. Use the MFCH tables to select the fluids in which the specified body declining blue, it floats. - Motorbike circuit
On a 2,550 m long circuit, two motorcycles go at such speeds that they meet every minute if they go against each other and run every 5 minutes if they go in the same direction. Find their speeds. - Two ports
Two ships commute along the same route between the ports of Mumraj and Zmatek. They spend negligible time in ports, turn around immediately, and continue sailing. At the same time, a blue ship departs from the port of Mumraj, and a green ship departs from - Interest rate
We borrowed CZK 50,000. The annual interest rate was 6%. We have to repay the entire debt in 5 years. How much will we pay? (use the compound interest relationship). - Installment 38011
We borrowed CZK 150,000 at a monthly interest rate of 2%. Interest is added at the end of each month, and we immediately pay an installment of CZK 30,000. How much will we owe in five months? - Coloured numbers
Mussel wrote four different natural numbers with colored markers: red, blue, green, and yellow. When the red number is divided by blue, it gets the green number is an incomplete proportion, and yellow represents the remainder after this division. When it - Instantaneous 37961
A plane wave has an amplitude u0 = 40 cm and a frequency f = 10 Hz. The speed of wave propagation through the medium is v = 40 cm/s. At a distance x = 10 cm from the starting point, the wave has an instantaneous deflection u = 15 cm. How long does it take
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