Apiano wire with mass 3.50 g and length 83.0 cm is stretched with a tension of 35.0 n. a wave with frequency 120 hz and amplitude 1.20 mm travels along the wire.

The average power is 0.1570 W.

Explanation:

Given that,

Mass of piano wire = 3.50 g

Length = 83.0 cm

Tension = 35.0 N

Frequency = 120 Hz

Amplitude = 1.20 mm

Suppose we need to calculate the average power carried by the wave

We need to calculate the angular frequency

Using formula of frequency

We need to calculate the linear density

Using formula of linear density

Put the value into the formula

We need to calculate the average power

Using formula of average power

Put the value into the formula

Hence, The average power is 0.1570 W.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.