Answer:
1/8 x C
Explanation:
The capacitance of parallel plate capacitor
= ε₀ A /d where A is area of plate and d is distance between plate.
for capacitor 1
C = ε₀ A /d
For capacitor 2
radius = R/2
Area = A / 4
Capacitance
= ε₀ (A/4) x ( 1 / 2d )
= ( 1 / 8) x (ε₀ A /d)
= 1/8 x C
You know how speed is how fast distance changes ?
Well, velocity is speed PLUS the direction of the motion,
and acceleration is how fast velocity changes.
Answer:
14.5 hours
Explanation:
The relationship between speed, time and distance for a uniform motion is
where
v is the speed
d is the distance
t is the time taken
Here we know:
v = 24.0 m/s is the average speed
is the distance
Solving the equation, we find the time taken:
And since
1 hour = 3600 s
The time in hours is
Answer:
A torque of 102.5375 Nm must be exerted by the fireman
Explanation:
Given:
The rate of water flow = 6.31 kg/s
The speed of nozzle = 12.5 m/s
Now, from the Newton's second law we have
The reaction force to water being redirected horizontally (F) = rate of change of water's momentum in the horizontal direction
thus we have,
F = 6.31 kg/s x 12.5m/s
or
F = 78.875 N
Now,
The torque (T) exerted by water force about the fireman's will be
T = (F x d)
or
T = 78.875 N x 1.30 m
T = 102.5375 Nm
hence,
<u>A torque of 102.5375 Nm must be exerted by the fireman</u>
A battery running to a transistor to regulate voltage to then power an LED lightbulb.
