When calculating the power of linear resistance circuit, can superposition principle be used? Why?

When calculating the power of linear resistance circuit, can superposition principle be used? Why?


When calculating the power of linear resistance circuit, superposition principle can not be used, because superposition principle only applies to linear relationship, such as current, voltage and resistance, while the relationship between power P and resistance R (P = I ^ 2 × R; P = u ^ 2 / R) is not linear



Is the superposition principle applicable to any circuit


Superposition principle is applicable to any linear system. When vector and vector field are involved, superposition is understood as vector sum. However, superposition principle is not applicable to power calculation



It costs 20 yuan to buy one story book and two science and technology books, and 48 yuan to buy the same three story books and four science and technology books. How much is a story book?


Do you want to solve the problem of primary school? The number of graphic representation is 1} + 2 ■ = 20, 3} + 4 ■ = 48; (3} + 4 ■ = 48) - {(1} + 2 ■) × 2 = 20 × 2};} = 48-40 = 8



English translation
Andy showed the sample to the customer and didn't talk about the price, let alone the problem of reducing the price. Could you tell me your price
This year, the price of China's acrylic yarn is 50% higher than that of last year. My goods are produced according to the price of last year's raw yarn. It should be easy to sell this year. Please hurry up! You said that we can have customers in 2-3 weeks. What's the situation? In the last email, I once again explained that our company is facing the limit of difficulties. Please fulfill your promise as soon as possible and pay close attention to the remittance. Andy will meet you in the near future, please arrange it


ANDY provided the customer with a look at the sample, but the price has not been negotiated yet.Decreasing the selling price is not allowed. Please tell me your expected price.This year, the price of ...



How many degrees? How many minutes? How many seconds? Urgent


1 ° = 60'1 '= 60 ", so 0.34 ° = 0.34 * 60' = 20.4 '
0.4 ′ = 0.4 * 60 ″ = 24 ″, so 26.34 ° = 26 ° 20 ′ 24 ″



A sealed cuboid glass jar is filled with some water. The glass jar is 18 cm long, 10 cm wide and 5 cm high Kind brother and sister help me
1. A sealed cuboid glass jar is filled with some water. The length of the glass jar is 18 cm, the width is 10 cm, and the height is 5 cm. Put the different sides of the glass jar on the table as the bottom. The minimum height of water is 2 cm. How many ml of water is in the glass jar? (the glass thickness is ignored)
2. Fill a 40 cm long, 30 cm wide and 25 cm high tank with water, and then pour the water into a 50 cm long cube tank. How deep is the tank? (the thickness of the tank is ignored)
3. A cuboid water tank with a bottom surface of 50cm long and a width of 40cm is half filled with water, and the water depth is 12cm. Now immerse all the square metal parts with the edge length of 10cm in the water. How many centimeters is the water depth in the water tank?


360ml



In the equal ratio sequence an, A1 = 4, the first n terms and Sn satisfy S3, S2, S4 to form the equal difference sequence, and find the general term formula of an!


a1*(1-q^3)/(1-q)+a1*(1-q^4)/(1-q)=2*a1*(1-q^2)/(1-q)
The solution is: q = 0 (rounding off), q = 1, q = - 2
When q = 1, an = 4,
When q = - 2, an = 4 * (- 2) ^ (n-1)



A rectangle is four times the width and 120 meters in circumference. How many square meters is the area of this rectangle?


A: the area of this rectangle is 576 square meters



Punctuation
At the end of the lecture, The professor said the following: "when I'm hungry, you set up a humanitarian club to discuss hunger, when I'm out of clothes, you talk about whether I've violated the moral code, when I've been hurt for no reason, you talk about the crime rate, you're filled with indignation, when I'm homeless, you come leisurely, you preach God's protection to me, you look like you're not alone So sacred, so noble, so kind, but why am I still so hungry, shivering and lonely? "


When I'm hungry, you set up a humanitarian club to discuss hunger; when I'm out of clothes, you talk about whether I've violated the code of ethics; when I'm wounded for no reason, you talk about the crime rate and are filled with indignation; when I'm homeless, you come leisurely and preach God's protection to me You look so holy, so noble, so kind, but why am I still hungry, shivering and lonely?



A number is composed of 15 ones, 6 tenths and 4 percentages. This number is (), which contains () 0.01. This number is accurate to (), and one decimal place is ()
The sum of the numerator and denominator of a fraction is 38. If the numerator and denominator are added with 3, the ratio of the numerator and denominator is 4:7. The original fraction is ()
Divide 5 tons of coal into 6 parts, each is 1 ton ()


A number is composed of 15 ones, 6 tenths and 4 percentages. This number is (15.64). It contains (1564) 0.01. This number is accurate to (16) decimal places and (15.6) decimal places
The sum of the numerator and denominator of a fraction is 38. If you add 3 to the numerator and denominator, the ratio of the numerator and denominator is 4:7. The original fraction is (13 / 25)
Divide 5 tons of coal into 6 parts, each of which is 1 ton (5 / 6)