Answer:
The correct answer is B negative y-direction
Explanation:
An electromagnetic wave is created by the fluctuation of the electric and magnetic fields, which are perpendicular to each other, the direction of propagation is perpendicular to these two fields.
Let's apply the above to our problem, the wave propagates in the positive direction of the z-axis so that the electric and magnetic fields must be in the xy plane
They express that the electric field is in the negative direction of the x-axis, for the direction of the other field, we can make the vectoial product E x B with the result must be in positive z the only way is that the magnetic field (B) is in the negative direction of the y axis
The correct answer is B negative y-direction
Answer:
5773.50269 Hz
23 A
Explanation:
= Inductance = 6 mH
= Capacitance = 5 μF
= Resistance = 3 Ω
= Maximum emf = 69 V
Resonant angular frequency is given by
![\omega=\dfrac{1}{\sqrt{LC}}\\\Rightarrow \omega=\dfrac{1}{\sqrt{6\times 10^{-3}\times 5\times 10^{-6}}}\\\Rightarrow \omega=5773.50269\ Hz](https://tex.z-dn.net/?f=%5Comega%3D%5Cdfrac%7B1%7D%7B%5Csqrt%7BLC%7D%7D%5C%5C%5CRightarrow%20%5Comega%3D%5Cdfrac%7B1%7D%7B%5Csqrt%7B6%5Ctimes%2010%5E%7B-3%7D%5Ctimes%205%5Ctimes%2010%5E%7B-6%7D%7D%7D%5C%5C%5CRightarrow%20%5Comega%3D5773.50269%5C%20Hz)
The resonant angular frequency is 5773.50269 Hz
Current is given by
![I=\dfrac{\epsilon}{R}\\\Rightarrow I=\dfrac{69}{3}\\\Rightarrow I=23\ A](https://tex.z-dn.net/?f=I%3D%5Cdfrac%7B%5Cepsilon%7D%7BR%7D%5C%5C%5CRightarrow%20I%3D%5Cdfrac%7B69%7D%7B3%7D%5C%5C%5CRightarrow%20I%3D23%5C%20A)
The current amplitude at the resonant angular frequency is 23 A
Answer: The statement when the motion energy of an object changes, energy is being transferred is true.
Explanation:
Motion energy is also called mechanical energy and it is the summation of kinetic energy and potential energy stored in an object required for work.
As kinetic energy is the energy acquired due to motion of an object and potential energy is the energy acquired by an object due to its position.
For example, when a moving ball strikes another ball causing it to move then energy is being transferred from one ball to another.
Therefore, the statement when the motion energy of an object changes, energy is being transferred is true.
Answer:
Energy is what makes change happen and can be transferred form one object to another. Energy can also be transformed from one form to another. Power is the rate at which energy is transferred. It is not energy but is often confused with energy.
Explanation: