Catching a wave, a 77 kg surfer starts with a speed of 1.3 m/s, drops through a height of 1.65 m, and ends with a speed of 8.2 m/s. How much non-conservative work was done on the surfer?

Answers

Answer 1

Answer:

Explanation:

The total work done by the wave is expressed as;

Workdone = Potential energy + Kinetic energy

Workdone = mgh + 1/2mv²

m is the mass = 77kg

g is the acceleration due to gravity = 9.8m/s²

v is the velocity = 8.2m/s

h is the height = 1.65m

Substitute into the formula;

Workdone = 77(9.8)(1.65) + 1/2(77)8.2²

Workdone = 1245.09 + 2588.74

Workdone = 3833.83Joules

Hence the amount of non conservative work done on the sofa is 3833.83Joules

Answer 2
The non-conservation work done will be "3833.83 Joules".

Given:

Velocity, v = 8.2 m/sHeight, h = 1.65 mMass, m = 77 kg

We know,

→ [tex]Work \ done = Potential \ energy +Kinetic \ energy[/tex]

or,

                     [tex]= mgh +\frac{1}{2} mv^2[/tex]

By putting the values,

                     [tex]= 77\times 9.8\times 1.65+\frac{1}{2}\times 77\times (8.2)^2[/tex]

                     [tex]= 1245.09+2588.74[/tex]

                     [tex]= 3833.83 \ Joules[/tex]

Thus the above approach is right.

Learn more about work done here:

https://brainly.com/question/24230840

Catching A Wave, A 77 Kg Surfer Starts With A Speed Of 1.3 M/s, Drops Through A Height Of 1.65 M, And

Related Questions

Our school needs to offer healthier options in the lunchroom. Elever High School has recently updated its cafeteria menu to include whole wheat pasta and breads, a fresh salad bar, and other healthy menu items. Students there claim that they have more energy and focus throughout their school day. Let's encourage healthier menus in our lunchroom!

What type of evidence does the writer of this passage use to support her claim?


statistics
statistics

an expert's opinion
an expert's opinion

examples
examples

the writer's opinion

Answers

Answer:

b

Explanation:

An arrow in a bow has 357 J of elastic potential energy How much Winette enere
Will the arrow have after it has been shot assuming there is no sir restoran

Answers

Answer:

357 J

Explanation:

The elastic potential energy of arrow in the stretched bow is 357 J.

The kinetic energy of the arrow after it has been shot is given by half of the product of the arrow's mass and velocity of the arrow.

Here there are no other forms of energy at play here. Only potential and kinetic energy.

As we know that in any system the energy is conserved accordingly the elastic potential energy of the arrow will be equal to the kinetic energy of the bow after it is released i.e., 357 J.

Please help me with this question guys.

Answers

Answer:

The average speed is 22.2 km/h

Explanation:

Average Speed

Given an object travels a total distance d and took a total time t, then the average speed is:

[tex]\displaystyle \bar v=\frac{d}{t}[/tex]

The mailman first drives d1=7 km at v1=15 km/h. The time taken to drive is:

[tex]\displaystyle t1=\frac{d1}{v1}=\frac{7}{15}=0.467\ h[/tex]

Then he drives d2=7 km at v2=43 km/h taking a time of:

[tex]\displaystyle t2=\frac{d2}{v2}=\frac{7}{43}=0.163\ h[/tex]

The total time is

t=0.467 h + 0.163 h = 0.63 h

The total distance is

d = 7 km + 7 km = 14 km

The average speed is:

[tex]\displaystyle \bar v=\frac{14}{0.63}=22.2\ km/h[/tex]

The average speed is 22.2 km/h

Other Questions
romona has $800 in her bank account Look at the organizational chart for a home health agency. Click here to view the chart.A nursing assistant is at a patients home giving the patient a bath. While bathing the patient, the nursing assistant observes a rash on the patients back, arms, and legs. According to this organizational chart, who will the nursing assistant report the rash to?A. the coordinating RNB. the home health administratorC. LPN/LVN careD. RN care Neeeed helpppp ASAP extra points it costs 13$ for admission to amusement park, plus 1.50$ for each ride.if you have a total of 35.50 to spend, what is the greatest number of rides you can go on If a toy rocket is launched vertically upward from the ground level with an initial velocity of 128 feet per second, then its height h after t seconds is given by the equation: h(t) = -16t^2 + 128tWhat is the maximum height the rocket reaches? The layers of rock may be relatively dated, from youngest to oldestA) G, F, E, D, C, A, B B) G, F, D, C, B, E, AC) G, F, D, E, C, B, AD) G, F, E, D, C, B, A Jacob Riis How the Other Half Lives shocked the American public with his use ofstrong prose describing cases of lynchingvivid descriptions of slaughterhouse conditionsSensational an untruthful claims of corruptionpowerful photograph depicting conditions in city slums How can we get Equation B from Equation A?3(x+2)=18x+2=18i need them solved aswell 3. Write an editorial on "Present condition of Human Rights in Nepal".SOCIAL STUDIES - GRADE 8 103 What is the nth term rule of the linear sequence 6,13,20,27,34? PLS PLS SOMEONE HELP ME ANSWER THESE QUESTIONS PLEEEAAASSSE!!(press on the picture so you can see the questions better!) The average American eats 16 pounds of turkey each year. Using the average, how much turkey will be eaten this year by the entire town of Turkey, TX (population 410)? What made it possible for Philip II to succeed in Greece?A:his interest in philosophyB: a peace agreement with PersiaC: conflict among his scattered tribes D: division between Greek city states (06.02 MC) Which of the following correctly explains the role of antibiotics in the human body? (2 points) a They break down damaging toxins created by bacteria. b They increase the number of white blood cells in the blood. c They rupture the cell wall or prevent protein synthesis in bacteria. d They reduce the effects of fever, swelling, and inflammation in the body. Nathan goes to the store and buys 4 shorts and 3 shirts for 85.5$. He later goes to the same store and buys 3 shorts and 5 shirts for 115$. What is the price for each shirt and each shorts? multiple choiceclick all that apply Congress couldn't pass a law unless _____ states voted in favor. simplify (3x+2) (y-2) - (7y+3) (y-3) Fill in the blank with the correct past tense form of Ir or Ser ( past tense) Consider the equations shown: ax + by = ab & 2ax + 3by = 3bWhich of these is the value of y in terms of a?Option 1 : y = 3a 35Option 2 : y = 2ab 3bOption 3 : y = 9a 35Option 4: y = 3 2a