The increase in the amount of carbon dioxide in the atmosphere is contributing to the greenhouse effect
a. True
b. False
Indicate whether the statement is true or false
True
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Graphical Analysis: An object is moving with constant non-zero velocity in the +x direction. The position versus time graph of this object is
A. a horizontal straight line. B. a vertical straight line. C. a straight line making an angle with the time axis. D. a parabolic curve.
Work: A traveler pulls on a suitcase strap at an angle 36° above the horizontal. If 555 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?
A. 46 N B. 37 N C. 52 N D. 56 N
A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.The resistance of the light bulb in ohms is
a. 0.05 b. 20. c. 720 d. none of the above.
Consider a hydrogen atom and a singly-ionized helium atom. Which atom has the lower ground state energy?
1.hydrogen 2.helium 3.The ground state energy is the same for both.