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3 years ago

9

A story about the doubles plus 2 fact 5+7

1 answer:

miss Akunina [59]3 years ago

8 0

The answer is 12 because 5+7=12

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Consider a series circuit consisting of a resistor of R ohms, an inductor of L henries, and variable voltage source of V(t) volt

ser-zykov [4K]

Answer:

$I(t)=\frac{1}{3}(1-e^{-30t})$

Step-by-step explanation:

We are given that

$\frac{dI}{dt}+\frac{R}{L}I=\frac{V(t)}{L}$

R=150 ohm

L=5 H

V(t)=10 V

$P=\frac{R}{L}=\frac{150}{5}=30$

$I.F=e^{\int Pdt}=e^{\int 30 dt}=e^{30 t}$

$I(t)\times I.F=\int e^{30 t}\times 10 dt+C$

$I(t)\times e^{30 t}=\frac{10}{30}e^{30 t}+C$

$I(t)=\frac{1}{3}+Ce^{-30 t}$

I(0)=0

Substitute t=0

$0=\frac{1}{3}+C$

$C=-\frac{1}{3}$

Substitute the values

$I(t)=\frac{1}{3}-\frac{1}{3}e^{-30 t}$

$I(t)=\frac{1}{3}(1-e^{-30t})$

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3 years ago

A car travels 36 miles in 1 hour and 30 minutes, what is its average speed

andrew11 [14]

The average speed is 0.4 miles per minute

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3 years ago

At grocery mart strawberries cost$2.99 four 2lbs and at Baldwin Hills market strawberries are $3.99 for 3 lbs what is the unit p

marishachu [46]

At the Grocery mart the strawberries cost $1.49 per lb. At Baldwin Hills market the strawberries code $1.33 per lb

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3 years ago

If 7 is added to the square of a positive integer, the result is 43. Find the positive integer

Blababa [14]

Answer:

6

Step-by-step explanation:

43-7=36

The square of 36 is 6.

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3 years ago

A cheetah ran 75 meters at a speed of 25 meters per second.How long was the cheetah running?

kenny6666 [7]

75 / 25 = 3 The Cheetah was running 3 sec

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3 years ago

Read 2 more answers