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3 years ago

Samuel is in charge of ordering lunch..

Mathematics

1 answer:

zloy xaker [14]3 years ago

3 0

Answer:

Step-by-step explanation:

This is the answer because the others don't make sense to me at all...

PLEASE DO MARK ME AS BRAINLIEST UWU 

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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

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

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

5 0

3 years ago

Please answer this correctly

Serggg [28]

Answer:

502 m²

Step-by-step explanation:

We require to find b before calculating the surface area.

The volume (V) of a cuboid is calculated as

V = lbh ( l is length, b is breadth and h is height )

Here V = 510, l = b, b = 10 and h = 3, thus

b × 10 × 3 = 510

30b = 510 ( divide both sides by 30 )

b = 17

--------------------------

The opposite faces of a cuboid are congruent, thus

top/bottom area = 2(17 × 10) = 2 × 170 = 340 m²

front/back area = 2(17 × 3) = 2 × 51 = 102 m²

sides area = 2(10 × 3) = 2 × 30 = 60 m²

Surface area = 340 + 102 + 60 = 502 m²

3 0

3 years ago

PLEASE HELP ASAP ILL MARK BRAINLEST

attashe74 [19]

Answer:

best way would be calendar

Step-by-step explanation:

then stop watch

heartbeat

finding height?

(im not totally sure because it depends what type of timekeeping you're talking about)

3 0

2 years ago

The midpoint of AB is M(-6, -6). If the coordinates of A are (-4, -8), what are

matrenka [14]

Answer: (-8, -4)

Step-by-step explanation:

3 0

2 years ago

The total of two numbers is 5,271. if one number is 1,938, what is the third number?

hammer [34]

Answer:

The other number is 3333.

Step-by-step explanation:

This is really easy, just subtract 1,938 from 5,271. (5271 - 1938 = 3333)

4 0

2 years ago