Download Physics Terms -1

Physics Terms -1
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2. A scalar quantity, speed = distance / time
5. The unit of potential difference (p.d.) or
electromotive force (e.m.f.)
7. The maximum displacement of a wave
from its rest/mean position
9. = force x perpendicular distance from the
pivot to the line of action of the force
11. The rate of change of displacement with
respect to time
12. The acceleration of a body falling under
gravity (9.81ms-2 on earth)
16. A physical quantity, measured in cubic
metres(m3)
18. The work done in moving a unit positive
charge from one point to the other.
19. The SI unit of work done, or energy, when
a force of one newton moves an object one
metre.
21. A type of force due to an engine (usually
forward force).
23. A force experienced due to the pressure
difference of the fluid at the top and bottom.
24. A device used to measure the potential
difference , connected in parallel.
27. The (instantaneous) rate of change of
velocity in respects to time
29. Density is the mass of a body per unit
volume
32. The number of waves that pass a fixed
point in a unit of time
33. The unit of power , = energy / time
34. A device used to measure the electric
current in a circuit, connected in series.
35. The rate at which work is done.
1. A quantity with magnitude and direction.
3. A vector quantity, the distance of an object
from its initial position in a direction
4. When resistive forces = driving force, acc =
0, so it cannot travel any faster.
6. A SI quantity, measured in kelvin (K).
8. Zero on the thermodynamic temperature
scale, equal to -273.15 degrees Celsius
10. An electrical component that changes its
resistance depending on its temperature.
13. Two equal, opposite and parallel forces
which create rotational force.
14. The energy an object possesses due to its
motion, given by KE = 0.5 x m x v²
15. The property of a material that measures it
resistance to electric current.
17. A form of electromagnetic wave . It may
cause sun tanning.
20. The energy transferred when an object is
moved through a distance by a force.
22. The load applied to an object per unit
surface area.
25. The gravitational force acting on a body,
measured in newtons (N).
26. The stored ability to do work
28. A quantity with magnitude but no
direction.
30. The time taken for one complete
oscillation. Denoted by 'T'. T=1/f
31. Unit in which force is measured. Symbol
"N".