Franklin had been waiting for an opportunity like this. He wanted to demonstrate the electrical nature of lightning, and to do so, he needed a thunderstorm.
He had his materials at the ready: a simple kite made with a large silk handkerchief, a hemp string, and a silk string. He also had a house key, a Leyden jar (a device that could store an electrical charge for later use), and a sharp length of wire. His son William assisted him.
Franklin had originally planned to conduct the experiment atop a Philadelphia church spire, according to his contemporary, British scientist Joseph Priestley (who, incidentally, is credited with discovering oxygen), but he changed his plans when he realized he could achieve the same goal by using a kite.
Answer:
current is 13.88 A
Explanation:
given data
no of loops = 50 loops
resistance = 40 Ω
R = 15.0 Ω
I = 5.0 amp
N = 18
to find out
rms current
solution
we will apply here transformed principle that is
v(s) / v(p) = I(p) / I(s) = N(s) / N(p) ....................1
here p is primary and s is secondary
put here all these value
5 / I(s) = 18 / 50
I(s) = 250 /18
I(s) = 13.88
so current is 13.88 A
The speed of a sound wave does not depend on the frequency of the wave, but only on the properties of the medium.
Since we are in the same concert all, the medium of propagation is still the same (the air), so it has not changed; therefore, the speed of the sound wave has not changed, and it is still 344 m/s.
So, the correct answer is "344 m/s".
Answer:
I would guess the following:
The smallest part of the element is: (the atom)
proton, neutron, electron (atomic particles
The proton has mass and is positive
The neutron has mass and no charge
The electron has (very small) no mass and negative charge,
Each atomic particle has a different atomic weight.
Answer:
The constant k has the value. k = 8.99 × 10 9 N ⋅ m 2 /C 2.
