Process of Science: We cannot test the nebular theory for the formation of the Solar System in a rigorous scientific way because the Sun and planets formed in the distant past
Indicate whether the statement is true or false
FALSE
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If a two-dimensional universe has a negative curvature,
a. the area of a circle will be greater than ?r2. b. the area of a circle will be equal to ?r2. c. the universe is infinite. d. the universe is finite but bounded. e. the universe will have a center.
Gauss's Law: Gaussian surfaces A and B enclose the same positive charge +Q. The area of Gaussian surface A is three times larger than that of Gaussian surface B. The electric flux through Gaussian surface A is
A. nine times larger than the flux of electric field through Gaussian surface B. B. three times larger than the flux of electric field through Gaussian surface B. C. equal to the flux of electric field through Gaussian surface B. D. three times smaller than the flux of electric field through Gaussian surface B. E. unrelated to the flux of electric field through Gaussian surface B.
An electron inside a hydrogen atom is confined to within a space of 0.110 nm. What is the minimum uncertainty in the electron's velocity? (h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg)
A) 3.31 × 106 m/s B) 4.71 × 106 m/s C) 3.30 × 108 m/s D) 4.71 × 108 m/s E) 3.30 × 1010 m/s
A person uses corrective glasses of power -8.5 D. (a) Is this person nearsighted or farsighted? (b) If the glasses are worn 2.0 cm from the eye, what is the person's far point without glasses?
What will be an ideal response?