Is the effective value of physics sine alternating current equal to its average value? Are they the same? Is the effective value of sinusoidal alternating current equal to its average value? Are they the same? What's the difference?

Is the effective value of physics sine alternating current equal to its average value? Are they the same? Is the effective value of sinusoidal alternating current equal to its average value? Are they the same? What's the difference?

It's usually unequal
The effective value of sinusoidal AC EMF is Emax / √ 2, and the average value is Δ E / Δ t;

Why is the superposition theorem only applicable to linear circuits

Superposition theorem in the superposition is algebraic addition, superposition theorem last few words
The voltage and current of nonlinear devices are complex numbers and can not be added directly, so they do not conform to the superposition theorem

What day is new year's day in 2005?
2. What is the result of 2020202 * 333-30303 * 222?

365 days in 2003, 366 days in 2004
Total 365 + 366 = 731 days
The remainder is 3
3+3=6
So new year's day in 2005 is Saturday
2020202*333-3030303*222
=2020202*3*111-3030303*2*111
=6060606*111-6060606*111
=0

A number plus 20 percent is 9.6. Find this number

9.6÷(1+20%)=8
A: the number is 8

The current price of Andersen's fairy tales is one sixth lower than the original price. The original price is four yuan higher than the current price. How much is the original price
Is it 24 divided by one sixth

Divide four by one sixth. Trust me, because I'm in junior high school

1+3+5+7+8+9…… +1000=?

513785

-(5x + y) - 7 (X-Y) - 1 / 2 (x + y) + 1 / 4 (x + 2Y) 4x-2 (X-2) - 2x - (3x-1) x - (5x-2y) + 2 (2x-y)

-(5x + y) - 7 (X-Y) - 1 / 2 (x + y) + 1 / 4 (x + 2Y) = - 5x-y-7x + 7y-x / 2-y / 2 + X / 4 + Y / 2 = - 12x-x / 4 + 6y = 6y-49x / 44x-2 (X-2) - 2x - (3x-1) = 4x-2x + 4-2x-3x + 1 = 5-3xx - (5x-2y) + 2 (2x-y) = x-8x + 2Y + 4x-2y = - 3x

What is the difference in the expression of the word "only" in the following sentences
Four poems by Bing Xin

The first two expressions mean only, only
It's a quantifier

How to calculate a leap year? That is, how to judge whether a year is a leap year?

Leap year is set up to make up for the time difference between the annual number of days and the earth's actual revolution cycle caused by man-made calendar regulations. The year with the time difference, that is, the year with leap day, is a leap year
The rule that the leap year of the Gregorian calendar follows is: one leap in four years, no leap in a hundred years, and another leap in four hundred years
A simple method for calculating the leap year of the Gregorian calendar
1. Divisible by 4, not by 100
2. Divisible by 400

Minus 47.65 times 2 and 11 / 6 plus minus 37.15 times 2 and 11 / 6 plus 10.5 times 7 and 11 / 5

-47.65 * 2 and 6 / 11 + (- 37.15) * (- 2 and 6 / 11) + 10.5 * (- 7 and 5 / 11)
=2 and 6 / 11 * (37.15-47.65) - 10.5 * 7 and 5 / 11
=2 and 6 / 11 * (- 10.5) - 10.5 * 7 and 5 / 11
=-10.5 * (2 + 6 / 11 + 7 + 5 / 11)
=-105