Answer:
True
Explanation:
It is true that the real definition of lenz's law in magnetism is the current is induced in the closed conducting loop in such a direction that the magnetic field induced by this current opposes the change in the flux through the loop.
This means that induced current opposes the very cause that produces it.
Answer:
Amplitude
Explanation:
A wave is a periodic oscillation that carries energy, but not matter, through space or through a medium.
A wave is characterized by the fact that the particles in the medium oscillate around a fixed point, but there is no overall movement of particles in the direction of the wave (this means, only energy is transferred, while matter is not transferred).
A wave is also characterized by several properties, namely:
Amplitude: it is the maximum distance the particles of the medium move from their resting positions
Frequency: the number of oscillations of a certain particle per second
Wavelenght: the distance between two points of the wave that have same shape
Period: the time it takes for one particle of the wave to complete one oscillation
So, the answer is
Amplitude
Answer:
W = 3.15 · 10⁶ J
Explanation:
We know that power is calculated using the formula:
- P = W/t
- where P = power (W), W = work (J), and t = time (s)
We can derive a formula for work using this formula by multiplying t to both sides of the equation.
Let's convert 15 kW to W.
Let's convert 3.5 min to s.
Substitute these values into the formula for work and solve for W.
- W = Pt
- W = (15,000 W) · (210 s)
- W = 3,150,000 J
- W = 3.15 · 10⁶ J
This is the amount of work done by a 15 kW engine in 3.5 minutes.
Answer: gravitational potential energy
Explanation:
Gravitational potential energy is refered to as the potential energy that an object has due to its gravitational field, which in turn is being turned into a kinetic energy when there is a fall of such objects.
Since Johanna is studying what happens to the energy as a ball rolls down a ramp, the form of energy here is the gravitational potential energy.
I guess it is a: resonance becz it means decreasing vibration
