Search 80,882 tutors

The number of hours h that it takes m men to assemble x machines varies directly as the number of machines and inversely as the number of men. If four men can assemble 12 machines in four hours, how...

The power Pthat must be delivered by a car's engine varies directly as the distance dthat the car moves and inversely as the timetrequired to move that distance. To move the car 2,000ft in 75s, the...

The resistance Rof a wire varies directly with its length Land inversely with the square of its diameter d. Write an equation for the constant of variation in terms of R,L,and d.Use kas a constant...

The power in an electric circuit varies inversely with the resistance. If the power is 1,200watts when the resistance is 12ohms, find the resistance when the power is 2,400watts. The resistance...

The distance d that a spring will stretch varies directly as the force f applied to the spring. If a force of 6 lb is required to stretch the spring 3 in, what force is required to stretch the spring...

The income I of a computer analyst varies directly as the number of hours h worked. If the analyst earns \$352 for working 8 h, how much will the analyst earn for working 30 h?

The distance d that a spring will stretch varies directly as the force f applied to the spring. If a force of 6 lb is required to stretch the spring 3 in, what force is required to stretch the spring...

The stopping distance s of a car varies directly as the square of its speed v. If a car traveling at 40 mph requires 112 ft to stop, find the stopping distance for a car traveling at 55 mph.

The load L, in pounds, on a certain sail varies directly as the square of the wind speed v, in miles per hour. If the load on a sail is 560 lb when the wind speed is 20 mph, what is the load on the...

The period p of a pendulum, or the time it takes for the pendulum to make one complete swing, varies directly as the square root of the length L of the pendulum. If the period of a pendulum is 1.7...

Kim and her little brother are picking strawberries. Actually, Kim picks the strawberries and her brother eats them out of the pail. If Kim could fill the pail in 16 minutes without her brotherâ€™s...

The current (I) in a wire varies directly as the voltage (v) and inversely as the resistance (r). If the current is 27.5 amps when the voltage is 110 volts and the resistance is 4 ohms, find the current...

The repulsive force f between the north poles of two magnets is inversely proportional to the square of the distance d between them. If the repulsive force is 26 lb when the distance is 9 in., find...

The speed v of a gear varies inversely as the number of teeth t. If a gear that has 30 teeth makes 24 revolutions per minute (rpm), how many revolutions per minute will a gear that has 15 teeth make...