Answer:
a.movement
Explanation:
Electricity is defined a set of natural phenomena associated with static charges or the movement of electric charges. Whenever we are talking about electricity, we are usually referring to the transport of energy when electric charges move; therefore, whenever, there is movement of charges, there is electricity.
So, it is correct to say that electricity is the movement of charged particles.
Electricity is NOT a collection of charged particles (choice b), because stationery charges do not transport energy when left untouched; some energy transfer has to happen if we are to use the word 'electricity'.
In a similar fashion, electricity is also NOT a build up of charged particles (choice c). Although charge build up does take energy, and charges are moving, but that happens in the domain of the definition of electricity—charge build up by itself is not a definition of electricity.
Answer:
A) d_o = 20.7 cm
B) h_i = 1.014 m
Explanation:
A) To solve this, we will use the lens equation formula;
1/f = 1/d_o + 1/d_i
Where;
f is focal Length = 20 cm = 0.2
d_o is object distance
d_i is image distance = 6m
1/0.2 = 1/d_o + 1/6
1/d_o = 1/0.2 - 1/6
1/d_o = 4.8333
d_o = 1/4.8333
d_o = 0.207 m
d_o = 20.7 cm
B) to solve this, we will use the magnification equation;
M = h_i/h_o = d_i/d_o
Where;
h_o = 3.5 cm = 0.035 m
d_i = 6 m
d_o = 20.7 cm = 0.207 m
Thus;
h_i = (6/0.207) × 0.035
h_i = 1.014 m
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Answer:
a camera employs camera lens to firm some images.
Explanation:
hope this helps.
Answer:
charge will be equal to
Explanation:
We have given mass of the particle m = 1.45 gram = 0.00145 kg
Acceleration due to gravity
Electric field E = 700 N/C
Electric force will be equal to , here q is charge and E is electric field
For particle to be stationary this force must be equal to force due to gravity , that is mg force
So qE = mg
So charge will be equal to