Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
Gravitational field
|
A region of space where a mass experiences a force because of its mass
|
|
|
Gravitational field strength (g)
|
A force per unit mass, experienced by a small test mass placed in the field [Nkg-1]
• Vector quantity • g = GM/ r^2 |
|
|
Gravitational potential at point P (massive sphere)
|
The work done per unit mass taking a small test mass from a position of zero potential to point P.
|
|
|
Electric field
|
A region of space where a charged object experiences a force due to its charge
|
|
|
Coulomb's law
|
The force experienced by two point charges is directly proportional to the product of their charge and inversely proportional to the square of their separation
|
|
|
Electric field strength,E
|
A force per unit charge experienced by a small positive charge placed in the field.
• vector quantity E = F/q |
|
|
Electric potential
|
The amount of work per unit charge needed to take a small positive test charge from a place of zero potential to the point
• [JC-1 or volts] • scalar quantity |
|
|
Electronvolt, eV
|
A unit of energy used in atomic physics. 1eV = energy gained by an electron accelerated through a p.d. Of 1 V
|
|
|
Magnetic field,B
|
Magnetic flux density: a region of space where a small test magnet experiences a turning force
|
