A 3.00 kg pendulum bob on a string 2.00 m long is released with a velocity of 2.00 m/s when the support string makes an angle of 45.0 degrees with the vertical. What is the tension in the string at the highest point of its motion?
A. 12.5 N
B. 17.8 N
C. 21.4 N
D. 28.9 N
E. 31.6 N
B. 17.8 N
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The glass in a window is 35 inches wide and 20 inches tall, and standard atmospheric pressure is 14.7 pounds per square inch. What net force would result on the glass if the air pressure outside the house were 1% lower than the air pressure inside?
A. 10300 pounds outward B. 103 pounds inward C. There would be no net force D. 103 pounds outward E. 10300 pounds inward
For a force to be a conservative force, when applied to a single test body
a. it must have the same value at all points in space. b. it must have the same direction at all points in space. c. it must be parallel to a displacement in any direction. d. equal work must be done in equal displacements. e. no net work must be done for motion in closed paths.
A small object has charge Q. Charge q is removed from it and placed on a second small object. The two objects are placed 1 m apart. For the force that each object exerts on the other to be a maximum, q should be:
A) 2Q B) Q C) Q/2 D) Q/4 E) 0
When the Moon is 90° west of the Sun, the Moon is in the ______________ phase
Fill in the blank(s) with correct word