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41 The potential difference applied to a circuit element remains constant as the
resistance of the element is varied. Which graph best represents the relationship
between power (P) and resistance (R) of this element?
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42 Which graph best represents the elastic potential energy stored in a spring (PEs)
as a function of its elongation, x?
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43 Which graph best represents the relationship between the gravitational potential
energy of a freely falling object and the object’s height above the ground
near the surface of Earth?
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44 A force vector was resolved into two perpendicular components, F1
and F2, as shown in the diagram below.
Which vector best represents the original force?
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45 A beam of monochromatic light (f = 5.09 × 1014 hertz) passes through parallel
sections of glycerol, medium X, and medium Y
as shown in the diagram below. What could medium X and medium Y be?
(1) X could be flint glass and Y could be corn oil.
(2) X could be corn oil and Y could be flint glass.
(3) X could be water and Y could be glycerol.
(4) X could be glycerol and Y could be water.
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