Physical Science Question 3

Compare the visible part of the ear to a satellite dish in terms of form and function.


I will be happy to critique your thinking on this.


WTF bobpursley? You are of no help to me on any of this! If I want you to "critique my thinking" I was ask you to, but no where in my question did I ask you to!


Liz,
You must understand that this is a "help" board with emphasis on the word help. This is not a "post your question and get your answer to fill in the blank board." We try to HELP you do your work but we don't DO it for you. (I note that Bob Pursley answered your first two questions and two out of three is not a bad average. You got two freebies and one you must do yourself. Not bad.) Regarding the ear post, surely you have seen a satellite dish. And you have seen diagrams of the workings of the ear (or at least you have books or can look in an encyclopedia to see how the inner part of the ear looks and works.) Then you put two and two together, compare the two, and write a paragraph or two to describe what you have learned from that comparison. The help you get on this board is directly proportional to the amount of work you put into it; i.e., the more work you show the more help you receive. We welcome your posts. We want you to come back. We want you to learn. But we don't want to do your work for you.


You will find your answer here:
(look under heading outer ear)
(Broken Link Removed)

So many students are not experts at finding information on the www (perhaps not their fault). They simply don't know how to do an advanced search. I feel if you don't want to give an answer that it is best to give a website. This makes the student dig a bit. It also, I feel, makes them feel helped enough they can't really complain bitterly. Albiet, no system is without drawbacks.




Lead is a soft, dense metal with a specific hear of 0.028 kcal/kgcelcius, a melting point of 328 degrees celcius and a heat fusion of 5.5 kcal/kg. How much heat must be provided to melt a 250.0kg sample of lead with a temperature of 20 degrees celcius?????


calculate the potential energy of an object that has a mass of 110 kg and is 15 m high?

calculate the potential energy of an object that has a mass of 0.056 kg and is 150 m high?

calculate the potential energy of an object that has a mass of 15 lbs. and is 15 ft. high?

calculate the potential energy of an object that has a mass of 1556 lbs. and is 0.5 ft high?

How is any of this done?

  1. 👍 0
  2. 👎 0
  3. 👁 64
asked by Liz

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics please help!!

    A satellite dish is designed to pick up radio waves from geostationary satellites about 36000 km about the Earth's surface. If the dish's surface is a part of a sphere of radius R, where should the receiver be placed compared to

    asked by archi on November 24, 2011
  2. math

    Satellite dish antennas have the shape of a parabola. Consider a satellite dish that is 80 cm across. Its cross-sectional shape can be described by the function d(x) = 0.0125x^2 - x, where d is the depth, in centimetres, of the

    asked by Emily J on March 8, 2016
  3. Math story problem

    A satellite dish is shaped like a paraboloid of revolution. the signals that emanate from a satellite strike the surface of the dish and are reflected to a single point, where the receiver is located. If the dish is 14ft across at

    asked by Hannah on May 7, 2013
  4. algebra

    A satellite dish has a parabolic cross section and is 6 ft deep. The focus is 4 ft from the vertex. Find the width of the satellite dish at the opening. Round your answer to the nearest foot. Thank you

    asked by Jamie on May 1, 2013
  5. mathsssss

    1.Seven years ago,Rocco's drum kit cost him R12500. It has now been valued at R2300.what rate of simple depreciation does this represent? 2.Fiona buys a DStv satellite dish for R3000.Due to weathering,its value depreciates simply

    asked by PerfecT on August 14, 2013
  6. Algebra

    An engineer designs a satellite dish with a parabolic cross section. The dish is 14 ft wide at the​ opening, and the focus is placed 4 ft from the vertex. ​a) Position a coordinate system with the origin at the vertex and

    asked by Jason on November 16, 2016
  7. Algebra

    An engineer designs a satellite dish with a parabolic cross section. The dish is 10 ft wide at the​ opening, and the focus is placed 8 ft from the vertex. ​a) Position a coordinate system with the origin at the vertex and

    asked by Lacey on November 16, 2016
  8. calculus

    A group of engineers is building a parabolic satellite dish whose shape will be formed by rotating the curve y=ax^2 about the y-axis. If the dish is to have a 6-foot diameter and a maximum depth of 2 feet, find the value of a and

    asked by Sam on March 7, 2017
  9. math

    A Dish TV satellite dish is the shape of a paraboloid. The dish is 36 inches wide, and 8 inches deep. How many inches should the receiver be located from the vertex for optimal reception? (round to the nearest thousandth)

    asked by jenny on October 15, 2017
  10. Calculus (math)

    A group of engineers is building a parabolic satellite dish whose shape will be formed by rotating the curve y=ax2 about the y-axis. If the dish is to have a 8-foot diameter and a maximum depth of 2 feet, find the value of a and

    asked by mariel on December 14, 2014

More Similar Questions