An object 2.0 cm tall is placed 24. cm in front of a convex mirror whose focal length is 30. cm
(a) Where is the image formed?
(b) How tall is it?
(a) 13 cm behind the mirror
(b) 1.1 cm tall
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What will be an ideal response?
A scientific model is a mental conception that provides a framework that helps us think about some aspect of nature
a. True b. False Indicate whether the statement is true or false
A humidifier water pan shown in the figure has a surface temperature of 95ºF when the surrounding temperature is 80ºF. If the pan is 2 ft square and the air moves over the pan at 2 ft/s, estimate the convective heat transfer coefficient.
A non-conducting sphere of radius R = 7.0 cm carries a charge Q = 4.0 mC distributed uniformly throughout its volume. At what distance, measured from the center of the sphere, does the electric field reach a value equal to half its maximum value?
A) 3.5 cm only B) 4.9 cm only C) 3.5 cm and 9.9 cm D) 3.5 cm and 4.9 cm E) 9.9 cm only