# Power - practice problems

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: 512

- Square

Calculate the side of a square with a diagonal measurement of 10 cm. - Gain

Find the gain whenever the output power is 21x the input power. - Cube root

Find the cube root of 18 - Expression: 4017

Specify the value of this expression: 4! · 2^-5 - Determine 3888

Determine the sum of the three-third roots of the number 64. - Opposite or reciprocal

How is 4 related to 4³? ... - Base conversion

12^{2}×14³ answer in base five - Cube

Calculate the surface cube with edge 11 dm. - Simplify 19533

Simplify 5a. (-3a) - Height of a cube

What is the volume of a cube if the height is 5cm? - What are 2

What are the two more terms of the GP (geometric progression) a, ax, ax², ax³, __, __? - Simplify

Simplify powers multiplication: (3+2²)(5-4²) - Powers 3

2 to the power of n divided by 4 to the power of -3 equal 4. What is the value of n? - Primes 2

For what primes p,q,r is true: p²-(q+r)²=647 - Choose 2

Choose an equivalent expression for three-fourths raised to the fourth power times three-fourths raised to the third power, all raised to the second power. - Square roots

What is equal to the product of the square roots of 295936? - Binomials

To binomial 36x²-168x, add a number to the resulting trinomial be square of the binomial. - Evaluate 26

Evaluate square root: √1³+2³+3³+4³= - Powers

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

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

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