Purchase Solution

AP Physics

Not what you're looking for?

Ask Custom Question

Question78: All birds, independent of their size, must maintain a power output of 10 to 25 watts per kilogram of body mass in order to fly by flapping their wings.

(a) The Andean giant hummingbird (Pantagona Gigas) has a mass of 70g and flaps its wings ten times per second while hovering. Estimate the amount of work done by such a hummingbird in each wing beat.

(b) A 70 kg athlete can maintain a power output of a typical athlete is only 500 W or so. Is it possible for a human-powered aircraft to fly for extended periods by flapping its wings? Explain.

Purchase this Solution
Solution Summary

This Solution contains calculations to aid you in understanding the Solution to this question.

Solution Preview

Please refer to attached file. Cheers.

(a) It's given that the power out must be 10 Watts/kg of body mass to 25 Watts/kg of body mass and the hummingbird weights 70 g (0.070 kg). We can calculate the power needed. Let's do it for the lower limit (10 Watts/kg) first.

...

Purchase this Solution
Free BrainMass Quizzes
Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

The Moon

Test your knowledge of moon phases and movement.

Basic Physics

This quiz will test your knowledge about basic Physics.

View More Free Quizzes
Related BrainMass Solutions

  • Physics coriolis acceleration problem

    15848 Physics coriolis acceleration problem Please see the attachments. Use coriolis acceleration concepts and i j k vector coordinates to solve. Thanks.

  • AP Physics 8-8

    53337 AP Physics 8-8 Please provide detailed steps. 8.8. Force of a Baseball Swing. A baseball has a mass of 0.145 Kg.

  • Coriolis Acceleration Physics

    /sqrt(2) + 0 aP/BD = 5*sqrt(2) = 7.07 m/s^2 (Answer) This solution consists of a detailed step-by-step response of how to work through the calculations required to complete both parts of this physics-based question.

  • AP physics problem for the pressure cacluation

    178060 AP Physics Problem for the Pressure Calcuation While exploring a sunken ocean liner, the principal researcher found the absolute pressure on the robot observation submarine at the level of the ship to be about 413 atmospheres.

  • AP Physics Questions

    52375 AP Physics Questions Question 69: A student proposes a design for an automobile crash barrier in which a 1700-kg sport utility vehicle moving at 20.0 m/s crashes into a spring of negligible mass that slows it to stop.

  • Standard Testing: A Critique

    And those who had taken AP physics, including those with low scores, were outperformed only by those from the top two nations, Norway and Sweden. Note, that doesn't seem to be the test improving learning; it's the classes.

  • Managerial Economics - Marginal Product and Cost

    Given the Production Function: Q = 72X + 15X2 - X3, where Q = Output and X = Input The Marginal Product (MP) and Average Product (AP) when X = 6 are: A) MP = 120; AP = 126 B) MP = 120; AP = 126 C) MP = 144; AP = 126 D) MP = 126; AP = 120 E) None

  • Energy levels of a hydrogen-like ion.

    55441 AP Chemistry: Test Review (See attached file for full problem description) --- I need full explanation of each step. Please help. 1.

  • Macroeconomics - Determine the level of Income Algebraically

    (AE = Total Spending, AP = Total Production or Total Output) (Hint: The equilibrium level exists where AE = AP. Graphically, this is expressed at the point of intersection between the AE and AP curves.

  • first derivative and area

    Wp = (W - 1 - 1) = W - 2 The total printed Ap is Lp * Wp: Ap = Lp * Wp = (L - 3.5) * (W - 2) Ap is what we want to maximize and this is equation [2]: max(Ap) = (L - 3.5) * (W - 2) [2] Plugging in equation [1] into [2]: L = 200

View More Related Solutions