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Her mother walks to work every day
Her mother walks to work everyday.
Her mother goes to work on foot everyday.
English translation
Playground
Amusement Park
The two things are very similar
Private car
Sophistication
It's normal
Who do you go climbing with?
What is the difference between hill and mountain?
Pursuing dreams
Pursuing girls
How long will he be back
How soon will you start again after you come back
Playground Amusement parks Two very similar things Private car Sophisticated persons It was normal And who do you go to the hills?What is the difference Hill and mountain Dreamhunters The pursuit of g...
I have been to an amusement park
I have been to the amusement park
I have been to the amusement park before.
I have been to the amusement park
I will be obedient, because I don't want to be without you
I will behave very nice because I don't want to lose you.
perhaps
I will do whatever you said because I can't live without you.
Vs team of talented translators
I will obey and bow, because you do not want no
I'll be your nice girl because I don't want to live without you.
HEI ID'E LIAK ::::::
Let the sum of the first n terms of the arithmetic sequence {an} be Sn, if A1 = - 11, A4 + A6 = - 6, then when Sn takes the minimum value, n is equal to ()
A. 6B. 7C. 8D. 9
Let the tolerance of the sequence be D, then A4 + A6 = 2A1 + 8D = 2 × (- 11) + 8D = - 6, the solution is d = 2, so Sn = − 11n + n (n − 1) 2 × 2 = N2 − 12n = (n − 6) 2 − 36, so when n = 6, Sn takes the minimum value. Therefore, select a
Calculation formula of electric power and electric power
All the formulas for the calculation of electric work and power should preferably be derived
W=Pt=UIt=I*IRt=U*U/t
P=W/t=I*IRt=U*U/t
W=UIt P=UI
p=w/t
p=UI
P=I^2 *R
P=U^2 /R
Four mixed operation problems of fraction (30 questions)
Let the sum of the first n terms of the arithmetic sequence [an] be Sn, if A1 = - 11, A4 + A6 = - 6, find (1) an (2) s
Let the sum of the first n terms of the arithmetic sequence [an] be Sn, if A1 = - 11, A4 + A6 = - 6, then
(1) The minimum value of an (2) Sn
A1 = - 11, A4 + A6 = - 62a5 = - 3A5 = a1 + 4d4d = - 3 + 11 = 8D = 2, so (1) an = a1 + (n-1) d = - 11 + 2 (n-1) = 2n-13 (2) Sn = (a1 + an) × n / 2 = (- 11 + 2n-13) n / 2 = n (n-12) = n & # 178; - 12n = (n-6) & # 178; - 36 when n = 6, the minimum value of Sn = - 36
Electric power calculation formula
Multiply the current by the voltage in amperes and volts. The unit of electrical power is watt
Four mixed operation exercises of fraction
45 × 2/3 + 1/3 × 15 7/19 + 12/19 × 5/6 1/4 + 3/4 ÷ 2/3 8/7 × 21/16 + 1/2 101 × 1/5 – 1/5 × 21 50＋160÷40 （58+370）÷（64-45） 120-144÷18+35 347+45×2-4160÷52 (58+37）÷（64-9×5） 95÷（64...
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- 15. Is there any contradiction between electric work formula and electric heating formula Electric work formula: w = uit Electrothermal formula: q = I & # 178; RT For the pure resistance circuit, all the electric energy is converted into heat energy, w = Q For the non pure resistance circuit, part of the electric energy is converted into heat energy, w > Q According to Ohm's law, I = u / R, w = uit = u & # 178; t / R, q = I & # 178; RT = u & # 178; t / R, w = Q So how does w > Q come from? Is Ohm's law invalid for non pure resistance circuit?
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