Single-Slit Diffraction: A single thin slit forms a diffraction pattern, with the first minimum at an angle of 40.0° from central maximum. If monochromatic light of 530.0-nm wavelength is used for the illumination, what is the width of the slit?
A. 825 nm
B. 791 nm
C. 757 nm
D. 723 nm
E. 689 nm
Answer: A
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A gas expands at constant temperature from an initial volume of 0.040 m3 and an initial pressure of 210 kPa until its pressure drops to 135 kPa. How much work is done by the system?
A) 3.0 kJ B) 3.7 kJ C) 4.1 kJ D) 5.6 kJ E) 7.9 kJ
The inside of a house is at 20°C on an early morning when the temperature outside is 15°C. The next morning the inside temperature is the same but the outside temperature is now 10°C. How much does the energy per unit time lost by conduction through the walls, windows, doors, etc., change for the house from the first morning to the second one?
a. Since the inside temperature stays the same, the loss is the same both days. b. The loss doubles. c. The loss halves. d. The loss increases by 5/288 since we need to use the Kelvin scale for this calculation.
Fossilized tree resin is known as
a. coal. b. amber. c. opal. d. stromatolite.
Creation science claims that scientific evidence can and does prove God made the universe. Select the statement which does not identify a legitimate objection to this claim. (Recall the hallmarks of science.)
A) If "God did it" is the explanation for everything, then final exams in astronomy would be very simple (all answers would be the same!), and science experiments would be very easy to explain, but we wouldn't learn much about the natural world. B) Science cannot prove (or disprove) the existence of a superpowerful, supernatural deity. C) The statement that "God did it" cannot be falsified by science, and therefore it is not a statement that science can test. D) Scientists are not allowed to believe in God.