Term
| What are the 7 fundamental quantities? |
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Definition
| Mass, length, time, current, temperature, amount of substance, and luminous intensity |
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Term
| What are the units for the fundamental quantities? |
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Definition
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Term
| What are the equations for velocity, acceleration, force, work or energy, power or rate of doing work, frequency, and pressure/stress? |
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Definition
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v = Dl / Dt; a = Dv / Dt; F = m a;
E = F l = ½ m v2; P = E t-1 = I V; s-1;
Pa = F m-2
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Term
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What are the SI units of the derived quantities listed in the previous question?
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Definition
m s-1; m s-2; N (kg m s-2);
J (kg m2 s-2) or (N m); W (J s-1); Hz (s-1);
Pa (N m-2) |
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Term
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What are the equations for charge, potential, capacity, and resistance?
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Definition
Q = I t; V = E Q-1 = W/A; C = Q V-1;
R = V I-1 |
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Term
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What are the SI units of the derived quantities listed in the previous question?
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Definition
C (A s); V (J C-1); F (C V-1);
W (V A-1) |
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Term
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What are the SI units for absorbed dose, exposure, dose equivalent, and activity?
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Definition
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Gy (J kg-1) = 100 rads;
R = 2.58 ´ 10-4 C kg-1;
Sv (J kg-1)
Bq (s-1) (1 Ci = 3.7´1010 Bq)
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Term
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Give the prefix for the following factors:
101
102
103
106
109
1012
1015
10-1
10-2
10-3
10-6
10-9
10-12
10-15
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Definition
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Deka
Hecto
Kilo
Mega
Giga
Tera
Peta
Deci
Centi
Milli
Micro
Nano
Pico
Femto
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Term
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What’s the equation for potential difference?
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Definition
| work don in elect circuit / charge passing through circuit |
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Term
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What’s the equation for work done in an electrical circuit?
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Definition
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Term
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What is an electron volt (eV)?
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Definition
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The energy acquired when an electron of charge e = 1.602 ´ 10-19 C falls through 1 volt.
1 eV = (1.602 ´ 10-19 C) ´ (1 volt)
= 1.602 ´ 10-19 J
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Term
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What does capacity describe?
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Definition
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The ability of an insulated conductor to store charge. When a charge Q is placed on such a conductor, its potential is raised to V.
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Term
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Give typical power ratings for the following:
Flashlight
Light bulb
Microwave
Stove burner
x-ray generator
Power plant
1-horse power
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Definition
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2 W
50 W
500 W
2 kW
80 kW
1 GW
750 W
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