Atechnician at a semiconductor facility is using an oscilloscope to measure the ac voltage across a resistor in a circuit. the technician measures the oscillating voltage to be a sine wave with a peak voltage of 6.25 v but must record the rms voltage on a report. what value should be reported?

The rms voltage on a report is 4.42 V.

Explanation:

Given that,

Peak voltage = 6.25 V

We need to calculate the rms voltage

The rms voltage is equal to the peak voltage divided by square root of 2.

Using formula of rms voltage

Where, = Peak voltage

Put the value into the formula

Hence, The rms voltage on a report is 4.42 V.

Boat speed = 8 miles/hr

Explanation:

Let the speed of the boat be U

Let the speed of the current be V.

Therefore, the downstream speed is U+V

and the upstream speed is U-V

Now we know that Speed = distance / time

Therefore, downstream speed, U+V = 63 / 7

                                                    U+V = 9 miles/hr   (1)

                  Upstream speed, U-V = 63 / 9

                                                U-V = 7 miles/hr      (2)

Therefore subtracting (2) from (1), we get

( U+V) - ( U-V ) = 9-7

2V = 2

V = 1 miles/hr

Therefore the speed of the current is V = 1 mile/hr

Now from (1) we get

U+V = 9

U+1 = 9

U = 8

Therefore, the speed of the boat is U = 8 miles/hr