Answer:
C.Q/3
Explanation:
The total capacitances in series
1/C=1/C1+1/C2+1/C3
=1 /C+1/C+1/C
3/C
Ctotal=C/3
Charge in each capacitances
1/3*Q
Q/3
TV announcer intend to mean "chnage of speed or velocity" by "High rate of speed" and in Physics domain it would mean "acceleration"
Explanation:
It is common to observe TV announcer saying certain events were occurring “with a high rate of speed”. By saying this they intend to mean that the event was rapid in its occurrence. It can also mean that the change in speed of the happening was very rapid/fast.
However, the same terms connote altogether a different expression in Physics domains. Speed is a scalar quantity with no direction. Hence most of the times speed mean velocity when the direction is also provided. “high rate of speed” would mean a change of velocity per unit time which is acceleration. Hence in Physics domain, the term would stand for acceleration.
The capacitance of a parallel-plate capacitor in vacuum is given by
where
A is the area of each plate
d is the separation between the plates
is the electric permittivity in vacuum
For the capacitor in our problem, the plates are circular, with a diameter of d=4.0 cm, so their radius is r=2.0 cm=0.02 m and their area is
while the separation between the plates is
Therefore the capacitance is
Answer:
131.3 m
Explanation:
Period of pendulum depends on the length of the pendulum. It can be calculated by using the formula:
Thus, tower is 131.3 m tall.
Distance and force.
You need to know how much force was needed and how far it went to calculate how much work was done. The answer is C.