Two objects of the same size, but unequal weights are dropped from a tall tower. Taking air resistance into consideration, the object to hit the ground first will be the
A) lighter object.
B) heavier object.
C) Both hit at the same time.
D) not enough information
Answer: B
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What is different about locating images in convex mirrors compared to locating images in concave mirrors?
a. Among many differences, ray diagrams do not work for convex mirrors. b. Convex mirrors require more rays for a minimum ray diagram. c. Everything is the same except that the focal point is located behind the mirror. d. Because convex mirrors have no focal point, rays must be constructed differently. e. Because convex mirrors have no optic axis, rays must be constructed differently.
A mass oscillates on the end of a spring, both on Earth and on the Moon. Where is the period the greatest?
A) Earth B) the Moon C) the same on both Earth and the Moon D) Cannot be determined from the information given.
Would you expect the steam point on your calibrated thermometer to be higher or lower than a regular standard thermometer? Why?
Two charges, +Q and ?Q, are located two meters apart and there is a point along the line that is equidistant from the two charges as indicated. Which vector best represents the direction of the electric field at that point?
a.
Vector EA
b.
Vector EB
c.
Vector EC
d.
The electric field at that point is zero.