Coil 1, connected to a 100 W resistor, sits inside coil 2 . Coil 1 is connected to a source of 60 cycle per second AC current. Which statement about coil 2 is correct?
a. No current will be induced in coil 2.
b. DC current (current flow in only one direction) will be induced in coil 2.
c. AC current (current flow in alternating directions) will be induced in coil 2.
d. DC current will be induced in coil 2, but its direction will depend on the initial direction of flow of current in coil 1.
e. Both AC and DC current will be induced in coil 2.
C
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When an electron goes from the ground state to an excited state,
a. energy is emitted. b. a photon is absorbed. c. a photon is emitted. d. none of these occur.
Consider the five facts listed below. The nebular theory of the formation of the solar system successfully accounts for four of these facts, while one can be considered to be just a coincidence. Which fact is a coincidence?
A) Our solar system has an equal number of terrestrial and jovian planets. B) The planets all orbit around the Sun in nearly circular orbits in nearly the same plane. C) The planets divide into two major types, terrestrial and jovian. D) The solar system has many small bodies, and these are concentrated in the regions known as the asteroid belt, Kuiper belt, and the Oort cloud. E) There are many impact craters on the Moon.
The ________ Belt bodies orbit beyond Neptune, but like the planets stay close to the ecliptic plane and in fairly circular orbits
Fill in the blank(s) with correct word
Quasars usually have their distances measured by what technique?
A) Type II supernovae B) Cepheids C) Parallax D) Hubble's Law E) Tully-Fisher relation