# Power - math word problems - page 28 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

- Powers

Is it true for any number a,b,c,d equality:? (a-b-c-d)^{ 6}= (d+c+b-a)^{ 6} - Special cube

Calculate the cube's edge if its surface and volume are numerically equal numbers. - Cube

The sum of lengths of cube edges is 56 cm. What are its surface and volume? - Chord

In a circle with a radius r=60 cm is the chord, 4× longer than its distance from the center. What is the length of the chord?

- Is right?

Is a triangle with sides 51, 56, and 77 right triangle? - Bulbs

In the box are 6 bulbs with power 75 W, 14 bulbs with power 40 W, and 15 with 60 W. Calculate the probability that a randomly selected bulb is: - Rectangle SS

The perimeter of a rectangle is 268 cm, and its diagonal is 99.3 cm. Determine the dimensions of the rectangle. - Circle

How big is an area of a circle if its circumference is 51.2 cm? - Pump

What power does a pump output to move 4853 hl of water to a height of 31 m for 8 hours?

- Quadratic equation

Quadratic equation 7x²+bx+c=0 has roots x_{1}= 67 and x_{2}= -84. Calculate the coefficients b and c. - Right triangle

The legs of the right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle. - Widescreen monitor

Computer businesses were hit by a wave of widescreen monitors and televisions. Calculate the area of the LCD monitor with a diagonal size 20 inches at a ratio of 4:3 and then a 16:9 aspect ratio. Is buying widescreen monitors with the same diagonal more - Similarity n-gon

9-gones ABCDEFGHI and A'B'C'D'E'F'G'H'I' are similar. The area of 9-gon ABCDEFGHI is S_{1}=190 dm², and the diagonal length GD is 32 dm. Calculate the area of the 9-gon A'B'C'D'E'F'G'H'I' if G'D' = 13 dm. - Trapezium zoom

How many times increase the area of the trapezoid if all sides and altitude increase 5 times?

- Tangents

To circle with a radius of 41 cm from the point R guided two tangents. The distance of both points of contact is 16 cm. Calculate the distance from point R and circle center. - Sphere A2V

The surface of the sphere is 241 mm². What is its volume? - Sphere fall

How much percent fall volume of a sphere if diameter decreases 3×? - Sphere growth

How many times does a volume of the sphere rise if diameter rises 10×? - Floating barrel

The barrel (cylinder shape) floats on water, the top of the barrel is 8 dm above water, and the width of surfaced barrel part is 23 dm. Barrel length is 24 dm. Calculate the volume of the barrel.

Do you have homework that you need help solving? Ask a question, and we will try to solve it.