Answer:
5 m/s²
Explanation:
From the questio,
Acceleration (a) = Change in velocity(Δv)/time(t)
a = Δv/t
a = (v-u)/t.................. Equation 1
Where v = final velocity, u = initial velocity, t = time
Given: v = 15 m/s, u = 5 m/s, t = 2 seconds
substitute these value into equation 1
a = (15-5)/2
a = 10/2
a = 5 m/s².
Hence her accleration is 5 m/s²
Answer:
The magnitude of the EMF is 0.00055 volts
Explanation:
The induced EMF is proportional to the change in magnetic flux based on Faraday's law:
Since in our case there is only one loop of wire, then N=1 and we get:
We need to express the magnetic flux given the geometry of the problem;
where A is the area of the coil that remains unchanged with time, and B is the magnetic field that does change with time. Therefore the equation for the EMF becomes:
Answer: The crust of the Earth has some permanent magnetization, and the Earth's core generates its own magnetic field, sustaining the main part of the field we measure at the surface. So we could say that the Earth is, therefore, a "magnet."
Explanation:
Answer:
a)
b)
c)
d)
Explanation:
From the question we are told that:
Diameter
Conductivity
Electron mobility
Electric field
a)
Generally the equation for Charge Density is mathematically given by
Therefore
b)
Generally the equation for current density is mathematically given by
c)
Generally the equation for current in wire is mathematically given by
d)
Generally the equation for electron draft velocity. is mathematically given by