Power - math word 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: 259

  • The tickets
    oriesky The tickets to the show cost some integer number greater than 1. Also, the sum of the price of the children's and adult tickets, as well as their product, was the power of the prime number. Find all possible ticket prices.
  • Concrete column
    beton The concrete column of the highway bridge has the shape of a block with dimensions of 1m x 0.8m x 25m. It should be lifted by crane to a height of 20m. What is the power of his engine if the lifting takes 2 minutes?
  • Elevator
    vytah-sachta In homes with more floor elevators are used. For passenger transport, the most commonly used traction elevator counterweight. The top of the shaft engine room with the engine. The car is suspended on a rope, which is guided up over two pulleys to the coun
  • Stand-by power
    remote_control Determine the year-round consumption of appliances in stand-by mode. Stand-by mode is regime the unit continuously 24 hours consume a tiny amount of electricity. Typically are televisions, electric ovens, radios, computers, monitors, satellite receivers,
  • Powers
    math_fun Is true for any number a,b,c equality:? ?
  • Electric cooker
     electric cooker During which time t does an electric cooker with power input P = 500 W and with efficiency n = 75% heat water with mass m = 2 kg and temperature t1 = 10°C to the boiling point (t2 = 100°C). The specific heat capacity of water is c = 4 180 J. Kg-1. K-1
  • Center
    circle Calculate the coordinates of the circle center: ?
  • EQ2
    eq2_4 Solve quadratic equation: ?
  • Binomials
    two_persons To binomial ? add a number to the resulting trinomial be square of binomial.
  • Highway tunnel
    tunnel_1 The highway tunnel was built from two ends in the north-south direction. The average daily performance of the "northern party" rasters was higher than the average daily power of the "southern party" of the rasters. After 55 business days, both parties met
  • Square
    ppyth5 Calculate the side of a square with a diagonal measurement 10 cm.
  • Primes 2
    18-785s07 For what primes p,q,r is true: p2-(q+r)2=647
  • Powers
    1power Express the expression ? as the n-th power of the base 10.
  • Factors
    factors Can the expression ? be factored into rational factors?
  • Height UT
    unilateral_triangle How long is height in the equilateral triangle with a side b = 43?
  • Simplify
    square Simplify powers multiplication: (3+22)(5-42)
  • Cube root
    30gon_1 Find cube root of 18
  • Square roots
    roots What is equal to the product of the square roots of 295936?
  • Cube
    1cube Calculate the surface cube with edge 11 dm.
  • Special cube
    cube3 Calculate the edge of cube, if its surface and its volume is numerically equal number.

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