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How does a helicopter achieve thrust? What type of energy is book on a bookshelf? How does a yo-yo have kinetic energy? Does the inertia of an object of an object change as its velocity changes? What is relationship between sound and frequency? What are three things fluids can do? Which factor influence amount of radiant energy on earth? How many ounces is 0.04 pounds? A moving body must undergo a change in? What reflects how heavy something is for it's size? How long does it takto demagnetize an object? How much is 91 kilos to pounds? What would happen to the wave length if you could increase the frequency of a periodic wave? According to the table in which medium does sound travel at the fastest speed? What would be the acceleration of a body if its velocity time graph is a line parallel to the time axis? What happens to velocity if spring length is doubled? What formed of energy possessed by matchstick in a matchbox? At w hat temperature does centigrade and Fahrenheit gives same reading? When anchoring a vein for venipuncture why is it inadvisable to place one finger above the venipuncture site? What forces attract a positive charge towards a negative charge?

What best describes the highlighted layer on the screen?