You use a 1200-watt hair dryer for 10 minutes each day. a. how many minutes do you use the hair dryer in a month? (assume there are 30 days in the month.) b. how many hours do you use the hair dryer in a month? c. what is the power of the hair dryer in kilowatts? d. how many kilowatt-hours of electricity does the hair dryer use in a month? e. if your town charges $0.15/kwh, what is the cost to use the hair dryer for a month?

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

What is the single most important equation in all of physics?

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j