Lightning is a naturally occurring electrostatic discharge during which two electrically charged regions in the atmosphere or ground temporarily equalize themselves, causing the instantaneous release of as much as one gigajoule of energy.
Answer:
Matter is made up of atoms.
There is no kinetic energy.
Kinetic energy = 1/2(m)v^2
There is no velocity; therefore, there is no kinetic energy.
Answer:
Magnitude of electric field is 1.06 x
V/m along negative X-direction
Explanation:
Given: initial velocity of proton = u = 3.5 x
m/s
final velocity of proton = v = 0 m/s
initial point
= 0.2 m and final point is
= 0.8 m
According to conservation of energy:
change in in kinetic energy = change in potential energy of proton
⇒
where q and m is the charge and mass of proton E is the electric field ,
and
is the initial and final position of proton
on substituting the respected values we get,
1.023 x
= 9.6 x
x E
⇒ E = 1.06 x
V/m
external force is opposite to the motion as velocity of proton decreases with distance.
Therefore, magnitude of electric field is 1.06 x
V/m along negative X-direction
Answer:
h = 15.34 m
Explanation:
given,
tuning fork vibration = 513 Hz
speed of sound = 343 m/s
frequency after deflection = 489 Hz
the source (the fork) moves away from the observer, its speed increases and hence the apparent frequency decreases





u = 16.92 m/s
height of the building
v² = u² + 2 g s
16.92² = 2 x 9.8 x h
h = 14.61 m
time taken by sound to reach observer


in this time tuning fork has fallen one more now,


h' = 0.7296 m = 0.73 m
total distance
h = 14.61 + 0.73
h = 15.34 m