Over ordinary temperature ranges, the resistance of most metals such as copper
A) increases as the metal gets hotter. B) decreases as the metal gets hotter.
C) is independent of the temperature of the metal. D) is a maximum at 20°C.
A
You might also like to view...
Even if Martian meteorites contained life, the life could not possibly have survived the journey from Mars to Earth
Indicate whether the statement is true or false
In each of the following situations, point charge q moves in a uniform magnetic field B. The strength of the magnetic field is indicated by the density of field lines. In each situation, the initial speed v of the charge is the same. For which situation(s) will the charge q travel the longest distance in a certain time T?
1.1
2.2
3.3
4.4
5.5
6.1 & 3
7.2 & 4
8.1, 2, 3 & 4
9.1, 2, 3, 4 & 5
10.Cannot be determined
In the fission reaction 235U + 1n 141Ba + 92Kr + neutrons, the number of neutrons produced is
A) 0. B) 4. C) 1. D) 3. E) 2.
Neutrons:
A) have double the mass of protons. B) are atomic particles with no charge. C) when equal in number form isotopes. D) exist independently and unattached to atoms.