A parallel-plate air capacitor is made from two plates 0.190 m square, spaced 0.770 cm apart. It is connected to a 120 V battery
2 answers:
Answer:
a.
b.
c.
d.
Explanation:
The question give:
- Area:
- separated distance:
- and voltage:
=
a. To find the capacitance we can use
C= since we have d A and
, where
C=
C=
b.To find charge we have to use:
since
c. To find electric field between the plates, that is potential difference between two plates:
E= E=
d.To find energy stored in the capacitor:
we can use
energy=C
energy=
energy=
You might be interested in
Answer:
Explanation:
Given that
Mass of rifle = M
Initial velocity ,u= 0
Mass of bullet = m
velocity of bullet = v
Lets take final speed of the rifle is V
There is no any external force ,that is why linear momentum of the system will be conserve.
Initial linear momentum = Final linear momentum
M x 0 + m x 0 = M x V + m v
0 = M x V + m v
Negative sign indicates that ,the recoil velocity will be opposite to the direction of bullet velocity.
Answer:
n = 5 approx
Explanation:
If v be the velocity before the contact with the ground and v₁ be the velocity of bouncing back
= e ( coefficient of restitution ) =
and
h₁ is height up-to which the ball bounces back after first bounce.
From the two equations we can write that
So on
= .00396
Taking log on both sides
- n / 2 = log .00396
n / 2 = 2.4
n = 5 approx