championship swimmers take about 22 seconds and about 30 arm strokes to move through the water...

championship swimmers take about 22 seconds and about 30 arm strokes to move through the water in a 50 meter freestyle race.

A) A swimmers metabolic power is 800 W. if the efficiency for swimming is 25%, how much energy is expended moving through the water in a 50 m race?

B) if half the energy is used in arm motion and half in leg motion, what is the energy expenditure per arm stroke?

C) Model the swimmers hand as a paddle. During one arm stroke, the paddle moves halfway around a 90 cm radius circle. If all the swimmers forward propulsion during an arm stroke comes from the hand pushing on the water and none from the arm, what is the average force of the hand on the water?

D) How much cal should the swimmer consume from food for such a race?

E) How much energy would be lost in form of thermal energy?

Expert Solution

championship swimmers take about 22 seconds and about 30 arm strokes to move through the water in a 50 meter freestyle race.

Here, we are given Metabolic Power as well as the energy consumed to swim which can be calculated with the given data.

genius_generous answered 6 months ago

The following data give the times (in seconds) of 22 male swimmers who entered the 50...

The following data give the times (in seconds) of 22 male swimmers who entered the 50 yard freestyle race in the conference championship meet, where Xis the swimmer's best time for the season and Y is the swimmer’s time in the meet. X Y X Y X Y X Y 24.97 23.98 24.76 23.63 23.80 23.61 22.84 23.58 24.07 23.57 22.98 23.17 22.93 22.83 23.41 22.75 22.10 22.74 23.08 22.70 23.59 22.62 23.80 22.53 22.38 22.39 22.91 22.34 22.08 21.95...

During typical urination, a man releases about 400 mL of urine in about 30 seconds through...

During typical urination, a man releases about 400 mL of urine in about 30 seconds through the urethra, which we can model as a tube 4.0 mm in diameter and 20 cm long. Assume that urine has the same density as water, and that viscosity can be ignored for this flow. What is the flow speed in the urethra? If we assume that the fluid is released at the same height as the bladder and that the fluid is at...

A. Apparently , water can move through short-lived gaps that appear in the inside of the...

A. Apparently , water can move through short-lived gaps that appear in the inside of the bilayer. As a result, the movement of the solvent through the phospholipid bilayer can be understood by applying the concept of osmosis. B. what is osmosis? C. under what conditions would the net movement of water be into the cell? Explain. D. If a cell shrinks due to loss of water through the cell membrane, it is said to have undergone crenation. what would...

Trees and other plants move water and minerals from their roots upward into the tree through...

Trees and other plants move water and minerals from their roots upward into the tree through a process involving: A. Cohesion only. B. Adhesion only. C. Surface tension only. D. A combination of cohesion, adhesion, and surface tension called capillary action.

The applied force P causes the rigid arm ABC to rotate clockwise about pin A through an angle of 0.05?....

The applied force P causes the rigid arm ABC to rotate clockwise about pin A through an angle of 0.05?. (Figure 1) Determine the normal strain developed in the wire BD. Determine the normal strain developed in the wire CE. The applied force P causes the rigid arm ABC to rotate clockwise about pin A through an angle of 0.05? . (Figure 1) Determine the normal strain developed in the wire BD.

Based on what we learned about benchmarking, what is your take on how CMS should move...

Based on what we learned about benchmarking, what is your take on how CMS should move forward with these benchmarks?

Water flows through a cast iron pipe with a diameter of 30 mm. The pipe is...

Water flows through a cast iron pipe with a diameter of 30 mm. The pipe is inclined at an angle of 3 degrees from horizontal and is 40 m long. The water flows due to gravity only. What is the maximum volume flow rate of the water? You may ignore any minor loses.

Suppose you plan to take a survey of math students asked about their overall grades. 22...

Suppose you plan to take a survey of math students asked about their overall grades. 22 students were surveyed, and it was found that the average GPA of the 22 sampled students was a 3.2, with a standard deviation of 0.9 points. Suppose you want to re-sample the population to reduce the margin of error. If you plan to calculate a 90% confidence interval for the true mean GPA of math students, how many samples would be necessary to reduce...

A family needs to take out a 30-year home mortgage loan of $140,000 through a local...

A family needs to take out a 30-year home mortgage loan of $140,000 through a local bank. Annual interest rates for 30-year mortgages at the bank are 8.1 % compounded monthly. (a) Compute the family's monthly mortgage payment under this loan. (b) How much interest will the family pay over the life of the loan?

An open cylinder 30 cm in diameter and 80 cm high containing water is rotated about...

An open cylinder 30 cm in diameter and 80 cm high containing water is rotated about its vertical axis at a speed of 240 rpm. If the Cylinder is brought to rest now, what would be the depth of water in it? If the speed is increased to 420 rpm. How much water will be left in the cylinder in liters? Specific Question If the speed is increased to 420 rpm. How much water will be left in the cylinder...

Question