What value of n corresponds to a wavelength of 922.7 nm in the Paschen series?

A) 3 B) 15 C) 9 D) 5 E) 7


C

Physics & Space Science

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The xy plane is "painted" with a uniform surface charge density which is equal to 40 nC/m2. Consider a spherical surface with a 4.0-cm radius that has a point in the xy plane as its center. What is the electric flux through that part of the spherical surface for which z> 0?

A. 14 N ? m2/C B. 11 N ? m2/C C. 17 N ? m2/C D. 20 N ? m2/C E. 23 N ? m2/C

Physics & Space Science

The buoyant force that acts on a submerged object is equal to

A) the object's weight. B) the object's volume. C) both the weight and volume of the object. D) the weight of water it displaces.

Physics & Space Science

In a hydrogen atom, a given electron has ? = 7. How many possible values can m1 have?

A) 6 B) 7 C) 15 D) 98

Physics & Space Science

This illustration shows the orbits of the three satellites that will compose the Laser Interferometer Space Antenna (LISA). What gravitational wave frequencies will LISA be sensitive to?

a. 0.0001 to 1 hertz to observe gravitational waves from binary systems and black holes. b. 1 to 10 hertz to observe gravitational waves from binary systems and black holes. c. 10 to 1000 hertz to observe gravitational waves from supernovae. d. 0.0001 Hertz to 1 hertz to observe gravitational waves of planets moving around stars. e. 0.0001 Hertz to 1 hertz to observe gravitational waves of moons moving around planets.

Physics & Space Science