the potential at the center of curvature of the arc = v = Q ∕ (4πε∘a) or 
ATQ,
We have density of charge,
λ = 
Where L is the rod's length, in this case the semicircle's length L = πr
Q is the charge on the rod
The potential created at the center by an differential element of charge is:
where k is the coulomb's constant
r is the distance from dQ to center of the circle
v = ∫ 
, Where a = radius, k = 1 / 4πε∘
v = or Q ∕ (4πε∘a)
To learn more about potential from the given link
brainly.com/question/25923373
#SPJ4
Either convection or thermal energy
Answer:
2450 J
Explanation:
Given that,
A 50Kg girl jumps off a 5-meter-high diving board.
We need to find the kinetic energy of the girl before she hits the water. At this point the kinetic energy becomes equal to the potential energy such that,
So, her kinetic energy right before she hits the water is equal to 2450 J.
Answer:
true
Explanation:
Energy stored in the nuclei of atoms can be used to generate electricity. ... Most of the energy of food is converted to heat.
Answer:
18.94 m/s
Explanation:
The bat becomes the source of sound . Source is moving towards observer
apparent frequency = actual frequency x (V / V - V_s)
V is velocity of sound and V_s is velocity of source or bat.
apparent frequency / actual frequency = V / (V - V_s)
21 / 12 = 340 / (340 - V_s)
1.059(340 - V_s) = 340
340 x .059 = 1.059 V_s
V_s = 18.94 m/s
=
