Answer:
The magnetic flux through a loop is zero when the B field is perpendicular to the plane of the loop.
Explanation:
Magnetic flux are also known as the magnetic line of force surrounding a bar magnetic in a magnetic field.
It is expressed mathematically as
Φ = B A cos(θ) where
Φ is the magnetic flux
B is the magnetic field strength
A is the area
θ is the angle that the magnetic field make with the plane of the loop
If B is acting perpendicular to the plane of the loop, this means that θ = 90°
Magnetic flux Φ = BA cos90°
Since cos90° = 0
Φ = BA ×0
Φ = 0
This shows that the magnetic flux is zero when the magnetic field strength B is perpendicular to the plane of the loop.
Answer:
There is no change, unless your mass is somehow at the quantum level, at which the concept of half-life breaks down.
Half life is a property of the specific radioactive isotope...NOT of the initial sample's mass.
Answer:
figure out what the letter mean , the figure how it's worth
The heat of fusion is the amount of energy required to change the state of one mole of substance from solid to liquid at constant temperature. Therefore, in order to determine the energy needed by a given mass of substance, we must first convert the mass into moles by using:
Moles = mass / Mr
Moles = 5.67 / 71.84
Moles = 0.079 mol
Energy = latent heat of fusion * moles
Energy = 32.2 * 0.079
Energy = 2.544 kJ = 2,544 J
Answer:
2.7 mV
Explanation:
A = 3.6 x 10^-3 m^2
B1 = 0.20 T, B2 = 1.4 T, t = 1.6 s
According to the Faraday's law of electromagnetic induction
e = - rate of change of magnetic flux
e = - dФ / dt
where, negative sign shows the direction of induced emf.
Ф = B x A
dФ / dt = A x dB / dt
e = A x dB / dt = 3.6 x 10^-3 x (1.4 - 0.2) / 1.6
e = 2.7 x 10^-3 V = 2.7 mV