In a double-slit experiment, the distance between the slits is 0.2 mm, and the distance to the screen is 150 cm. What wavelength (in nm) is needed to have the intensity at a point 1 mm from the central maximum on the screen be 80% of the maximum intensity?
a. 900
b. 700
c. 500
d. 300
e. 600
A
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Identical masses m are attached to identical springs of spring constant k suspended from the ceiling. With both masses hanging in their equilibrium positions, mass A is pulled down 10 cm and released while mass B is pushed up 10 cm and released. Which statement is correct?
a. Mass A will travel a smaller distance to its highest point than mass B will travel to its lowest point. b. Mass A will travel a greater distance to its highest point than mass B will travel to its lowest point. c. Masses A and B will travel equal distances between their highest and lowest points. d. More work was done on mass A by the extending force than on mass B by the compressing force. e. The total work done on mass A by the extending force was equal to the total work done on mass B by the compressing force.
Now consider the second major feature (two types of planets). Which of the following statements are true for the terrestrial and jovian planets in our solar system?
A. Jovian planets have more moons than terrestrial planets. B. Jovian planets orbit farther from the Sun than terrestrial planets. C. Jovian planets are larger in mass than terrestrial planets. D. Jovian planets are made most of metal, rock, and helium. E. Jovian planets are larger in size than terrestrial planets.
The energy from an AGN is produced by
a. the collision of two spiral galaxies. b. the collision of two elliptical galaxies. c. the collision of two radio jets. d. matter flowing into a supermassive black hole. e. supernovae.
Which terrestrial world experiences the greatest change between its daytime temperature and night temperature?
A) Mercury B) Venus C) Earth D) Mars E) the Moon