Calculate how much work does he do

Reference no: EM13540786

Bicyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.

(a) How much work does he do during a 177-km race in which his average speed is 12.7 m/s?

(b) Often, the work done is expressed in nutritional Calories rather than in joules. Express the work done in part (a) in terms of nutritional Calories, noting that 1 joule = 2.389 x 10-4 nutritional Calories.

Reference no: EM13540786

Questions Cloud

Find the number of joules of energy in one kilowatt-hour : One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour, Determine the number of joules of energy in one kilowatt-hour

Explain the presence of phosphates in the water : In some communities, products that contain phosphates are banned from sale because of pollution of well water, streams, and coastal bay. How could these salts enter the environment. How could the authorities test for the presence of phosphates in ..

What is the linear charge density of the rod : In the figure below, a nonconducting rod of length L = 8.50 cm has charge -q = -4.32 fC uniformly distributed along its length. What is the linear charge density of the rod?

Calculate the ratio of size of the electrostatic repulsion : It is known that the electric force of repulsion between two electrons is much stronger than the gravitational attraction. For two electrons at a distance d apart, calculate the ratio of the size of the electrostatic repulsion to that of the gravi..

Calculate how much work does he do : Bicyclists in the Tour de France do enormous amounts of work during a race. How much work does he do during a 177-km race in which his average speed is 12.7 m/s

How many grams of barium hydroxide to saturated solution : How many grams of barium hydroxide must be added to 2.37-L of distilled water to make a saturated solution

What pressure would be found at the freezing point of water : In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling pentane (36.1°C). The separate pressures are 0.349 atm and 1.442 atm.

What is the balls speed when it hits the water : A ball is launched with an initial velocity of 24.9 m/s at a 45° angle from the top of a cliff that is 9.00 m above the water below. What is the balls speed when it hits the water

Explain sodium sulfide is soluble in water : To 2.00 L of .100M of lead(II) nitrate, you add .500 grams of sodium sulfide (Na2S). Being a sodium salt, sodium sulfide is soluble in water. What would you expect to see after the sodium sulfide dissolves

User Account

All Pages