Why is Jupiter denser than Saturn?
A) The extra mass of Jupiter compresses its interior to a greater extent than that of Saturn.
B) It is made of a different composition than Saturn, including a higher proportion of hydrogen compounds and rocks.
C) Its core is much larger than Saturn's.
D) It has a greater proportion of helium to hydrogen compared to Saturn.
E) Scientists do not know why this is so.
A
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If an x-ray beam of wavelength 1.4 × 10-10 m makes an angle of 20° with a set of planes in a crystal causing first order constructive interference, at what angle will the second order line appear?
A) 40° B) 20° C) 43° D) 4.0° E) 11°
A thin copper rod 1.00 m long has a mass of 50.0 g. What is the minimum current in the rod that would allow it to levitate above the ground in a magnetic field of magnitude 0.100 T?
1.1.20 A 2.2.40 A 3.4.90 A 4.9.80 A 5.none of those answers
The ratio of the de Broglie wavelength of the electron in the n = 4 orbit in hydrogen to the wavelength in the n = 1 orbit is
A. 1. B. 2. C. 4. D. 16. E. 0.25.
What is a quark?
a. A hypothetical building block for a hadron. b. A hypothetical building block for a lepton. c. A hypothetical building block for a neutrino. d. A hypothetical building block for a positron. e. A hypothetical exchange particle for the strong nuclear force.