If an object remains at rest, then the sum of both the external torques and the external forces on the object must be zero
A) True
B) False
A
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A high pressure system in the Northern Hemisphere will have
a. rising air which draws surface air in, the surface winds spiral to the left. b. rising air which draws surface air in, the surface winds spiral to the right. c. sinking air which pushes surface air out, the surface winds spiral to the left. d. sinking air which pushes surface air out, the surface winds spiral to the right.
State which element is oxidized and which is reduced in the reaction Al + 3F2 ? 2AlF3
An object is 5.7 cm from a spherical concave mirror. If the image is 4.7 cm tall and 10 cm from the mirror, how tall is the object?
A) 12 cm B) 11 cm C) 8.2 cm D) 2.7 cm
If body P, with a positive charge, is placed in contact with body Q (initially uncharged), what will be the nature of the charge left on Q?
a. must be greater in magnitude than that on P b. must be equal in magnitude to that on P c. must be negative d. must be positive