Mechanical waves transfer energy by inducing vibrations in the propagation medium.
Answer:
500 watts
Explanation:
Recall that the definition of power is the amount of energy delivered per unit of time.
In our case, the energy delivered is potential energy which we can estimate as the product of the weight of the object times the distance it is lifted above ground:
200 N x 10 m = 2000 Nm
then the power is the quotient of this potential energy divided the time it took to lift the object to that position:
Power = 2000 / 4 Nm/s = 500 Nm/s = 500 watts
Answer:
I think the Bulb No. 2 will stop emitting light if the bulb No. 1 burns out.
Because although they cannot see it, they can see it's influence on objects that can be seen, and it's effects.
