### What power must a motor have to perform this task

Assignment Help Physics
##### Reference no: EM13242692

A skier of mass 73 kg is pulled up a slope by a motor-driven cable.

(a) How much work is required to pull him 45 m up a 30° slope (assumed frictionless) at a constant speed of 1.6 m/s?

J

(b) What power (expressed in hp) must a motor have to perform this task?

hp

#### Questions Cloud

 Find the direction of the net force acts on the sailboat : A 380-kg sailboat has an acceleration of 0.636 m/s2 at an angle of 65.5 ° north of east. Find the direction of the net force that acts on the sailboat What is the composition of the average fans spending : For hotdogs, the average fan's MU for units 1, 2, and 3 is 150, 125, and 80 utils. For soda, MU for units 1, 2, and 3 is 130, 100 and 60. For nachos, it's 140, 120 and 100. The average fan spends \$25 per night on concessions. Hotdogs cost \$5, nach.. Calculate the velocity of the fish relative to the water : An eagle is flying horizontally at a speed of 3.00 m/s when the fish in her talons wiggles loose and falls into the lake 5.00 m, Calculate the velocity of the fish relative to the water when it hits the water Who has the least-cost home ownership and by how much : Home, Sweet Home. Suppose Ms. Profligate and Mr. Discipline both purchase identical \$185,000 homes in Marietta, GA on January 1, 2012. They both have good credit and qualify for a loan with no down payment and 4.8% financing. What power must a motor have to perform this task : A skier of mass 73 kg is pulled up a slope by a motor-driven cable, What power (expressed in hp) must a motor have to perform this task What is the cross-price elasticity of burgers with chicken : Fast Food. Wendy's recently changed the price of their classic Single burger from \$1.39 to \$1.49. Sales went from 497/day to 366/day. Across the street, the Bojangles chicken sandwich maintained its price of \$1.99 River marks the westward limit of bantu expansion : Which river marks the westward limit of Bantu expansion? Which areas were sites of early iron production by Bantu peoples? Which large river system lay across the center of the main route of Bantu expansion? Find the force constant of the spring : In a control system, an accelerometer consists of a 4.99-g object sliding on a calibrated horizontal rail, Find the force constant of the spring required for the calibration to be correct What is the atc per poster but not per thousand : The market price is currently \$1 per poster. She has fixed cost of \$250. Her variable cost are \$1000 for the first thousand posters, \$800 for te second thousand, and then \$750 for each additionl thousand posters.

### Write a Review

#### What is the charge on each sphere

Two small spheres, each with mass m = 3.1 g and charge q, are suspended from a point by threads of length L = 0.23 m

#### What is the velocity of which it hits ground

Two speakers, one directly behind the other, are each generating a 429-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of ..

#### What is the uncertainty of the length

The length of a table in the laboratory was measured as 182.36 cm, What is the relative uncertainty of the length, What is the uncertainty of the length

#### Find out the speed at which sound travels

The sound produced by the loudspeaker has a frequency of 12002 Hz and arrives at the microphone via two different paths. The sound travels through the left tube LXM that has a fixed length.

#### What is the effect of thermal insulation on cooling

What is  the effect of thermal insulation on cooling

#### Find the magnitude and direction of the resultant force

find the magnitude and direction of the resultant force A + B that is applied to the stump. Specify the direction with respect to due east.

#### What is the speed of the electron

What least horsepower must a motor have to be able to drag a 320 box along a level floor at a speed of 1.10 if the coefficient of friction is 0.50.

#### What is its velocity when it reaches the maximum height

What is its velocity when it reaches the maximum height.

#### Find the angular frequency in radians per second

A simple harmonic oscillator takes 10s to undergo five complete vibrations.

#### What is the dielectric constant of the material

With the power supply disconnected, the dielectric material is removed and the potential difference between the plates is measured to be 500 V. What is the dielectric constant of the material that was at first used to fill the gap between the plates.

#### Calculate the radius of the sphere

The electric potential inside a conducting sphere is 245V, and a distance d = 32.0cm from the surface of the sphere, the potential is 175V. Calculate (a) the radius of the sphere and (b) the charge on the sphere.

#### Find the instantaneous velocity of the particle

A particle moves along the x-axis. Its position varies with time according to the expression x(t) = -4t + 2t2, where x is in meters and t is in seconds. a) Determine the displacement of the particle in the two time intervals t = 0 to t = 1 s and t..