Answer:
When the electrical current passes through the conductors, the polarity is changed, and the diaphragm interacts with the permanent magnets, vibrating and creating sound.
Explanation:
I think this is shown in the fine print on the second sheet . . .
The question starts out by saying that the scale uses <u>two</u> 3V cells <u>in series</u>.
That makes the total battery voltage 6 volts.
0.12 milliamperes = 0.00012 Amperes.
Resistance = (voltage) / (current in Amperes).
Resistance = 6 / 0.00012 = 50,000 Ω
The right answer for the question that is being asked and shown above is that: "A. Compressions and rarefactions make up longitudinal waves, which can only travel in matter." The statement that best describes longitudinal waves is that c<span>ompressions and rarefactions make up longitudinal waves, which can only travel in matter.</span>
An upwards acceleration of the elevator would cause this greater reading since the scale displays the Normal Force of the object on it. The inertia of the person would prefer to stay stationary, so the scale must push up on the person to accelerate him upward along with the elevator. This results in the following equation:
W = mg + ma
Where mg represents the weight reading without external acceleration and ma as the weight reading due to the external acceleration.
