If a person is nearsighted the corrective lens will:
a. take an object at the far point and form an image at 25 cm.
b. take an object at 25 cm and form an image at the far point.
c. take an object at infinity and form an image at the far point.
d. take an object at infinity and form an image at 25 cm.
C
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Suppose two charges, one positive and one negative, are separated by a distance d. Where can two equipotential surfaces at different potentials intersect in the region near the charges?
a. halfway between the charges if the charges have the same magnitude b. closer to the smaller negative charge than the larger positive charge if the charges are not equal c. Equipotential surfaces at different potentials cannot intersect. d. closer to the smaller positive charge than the larger negative charge if the charges are not equal
Which of the following is not a component of a stream's load?
a. Mother load b. Dissolved load c. Suspended load d. Bed load
An electric toaster operating on 120 volts draws a current of 9 amperes. What is the resistance of the toaster?
A cannonball has more kinetic energy than the recoiling cannon from which it is fired because the force on the ball
A) is more concentrated. B) meets less resistance than the cannon on the ground. C) acts over a longer distance.