Power - math word problems - page 26 of 29
Power is the amount of work done (energy supplied) per unit time. In physics, power is the amount of energy transferred or converted per unit time. In the SI units, the unit of power is the watt, equal to one joule per second. Other units are, for example, 1 hp (one horsepower; 1 hp = 735.5 W) and then derived units such as kW - kilowatt.Number of problems found: 570
- Without Euclid laws
Right triangle ABC with a right angle at the C has a=14 and hypotenuse c=26. Calculate the height h of this triangle without the use of Euclidean laws. - Efficiency
A certain device consumes 28 kW and delivers 14 kW. Find its efficiency. - The circle arc
Calculate the span of the arc, which is part of a circle with diameter d = 11 m and its height is 5 m. - Tank
In the middle of a cylindrical tank with a bottom diameter of 251 cm is a standing rod that is 13 cm above the water surface. If we bank the rod, its end reaches the water's surface just by the tank wall. How deep is the tank?
- Tereza
The cube has an area of base 144 mm². Calculate the edge length, volume, and area of its surface. - Pure quadratic equation
Solve pure quadratic equation -7x² +4 = 0. - Height UT
How long is the height in the equilateral triangle with a side e = 15? - Square
Rectangular square has side lengths 183 and 244 meters. How many meters will measure the path that leads straight diagonally from one corner to the other? - Reverse Pythagorean theorem
Given are the lengths of the sides of the triangles. Decide which one is rectangular: Δ ABC: 77 dm, 85 dm, 36 dm ... Δ DEF: 55 dm, 82 dm, 61 dm ... Δ GHI: 24 mm, 25 mm, 7 mm ... Δ JKL: 32 dm, 51 dm, 82 dm ... Δ MNO: 51 dm, 45
- Square Number
If to a square of integer number add 43, we get the square of the following integer number. What is the original number? - Center
Calculate the coordinates of the circle center: x² -4x + y² +10y +25 = 0 - Gain
Find the gain whenever the output power is 21x the input power. - Decibel
A circuit has an input power of 92 mW. Its output power is 12 mW. What is the loss in decibels? - Root
The root of the equation (x-10)² +4 = x² +35x is (equal or greater or less than zero). ...
- Circle
Write the equation of a circle that passes through the point [0,6] and touches the X-axis point [5,0]: (x-x_S)²+(y-y_S)²=r² - Rectangle
The rectangle is 21 cm long and 38 cm wide. Find the radius of the circle circumscribing the rectangle. - Lathe
From the cube of edge, 37 cm was a lathed maximum cylinder. What percentage of the cube is left as waste after being lathed? - Garden
The square garden area is 2/9 of triangle garden with sides 160 m, 100 m, and 100 m. How many meters of fencing need to fence a square garden? - Cube zoom
How many percents do we increase the volume and surface of the cube if we magnify its edge by 47 %?
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