Which planet's existence was correctly predicted based on mathematical calculations of the orbital motions of other planets before it was seen by a telescope?
A) Mercury
B) Uranus
C) Neptune
D) Pluto
C) Neptune
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What are the circumstances under which convection can occur in a substance?
A) when the substance is subjected to a strong magnetic field B) when the substance is strongly cooled from underneath C) when dense material is being added to the substance D) when the substance is strongly shaken or disturbed by a strong wind E) when the substance is strongly heated from underneath
What is the speed of a 4-kg ball with a momentum of 12 kg?m/s?
A) 3 m/s B) 4 m/s C) 12 m/s D) 48 m/s E) none of the above
A laser beam (? = 694 nm) is incident on two slits 0.100 mm apart. Approximately how far apart (in m) will the bright interference fringes be on the screen 5.00 m from the double slits?
a. 3.47 × 10^?3 b. 3.47 × 10^?2 c. 3.47 × 10^?4 d. 3.47 × 10^?6 e. 3.47 × 10^?5
Which of the sources of error that you cited in question 5 do you think most affected your experiment? Why?