Answer:
The value is 
Explanation:
From the question we are told that
The Coulomb constant is 
The charge on the electron/proton is 
The mass of proton 
The mass of electron is 
Generally for the electron to be held up by the force gravity
Then
Electric force on the electron = The gravitational Force
i.e




Answer:
84 kj/min = 1.4 kj/sec
Power Out / Power In = Heat Out / Heat In - Coefficient of Performance
1.4 kj/sec / 1.2 kj/sec = 1.17 = COP
Answer:
Trabajo realizado = 600 Nm
Explanation:
Dados los siguientes datos;
Fuerza = 1000 Newton
Distancia = 0.6 metros
Para encontrar el trabajo realizado;
Sustituyendo en la ecuación, tenemos;

Trabajo realizado = 600 Nm
Answer:
The the maximum emf is 
Explanation:
Given that,
Magnetic field 
Frequency = 60 Hz
Diameter = 7.8 μm
We need to calculate the maximum emf
Using formula of emf

Where, N = number of turns
B= magnetic field
A = area
Put the value in to the formula


Hence, The the maximum emf is 
Answer:
18000 Bg
Explanation:
after 15 minutes = 36000/2
After 30 minutes = 36000/4
30 minutes × 2 = 1 hour
After 1 hour = 36000/4 × 2 = 18000 Bg