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2 years ago

A video inspection snake is use

Engineering

1 answer:

LekaFEV [45]2 years ago

5 0

Answer:

very good thx

Explanation:

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The current through a 10-mH inductor is 10e−t∕2 A. Find the voltage and the power at t = 8 s.

NNADVOKAT [17]

Answer:

voltage = -0.01116V

power = -0.0249W

Explanation:

The voltage v(t) across an inductor is given by;

v(t) = L $\frac{di(t)}{dt}$ -----------(i)

Where;

L = inductance of the inductor

i(t) = current through the inductor at a given time

t = time for the flow of current

From the question:

i(t) = $10e^{-t/2}$ A

L = 10mH = 10 x 10⁻³H

Substitute these values into equation (i) as follows;

v(t) = $(10*10^{-3})\frac{d(10e^{-t/2})}{dt}$

Solve the differential

v(t) = $(10*10^{-3})\frac{-1*10}{2} (e^{-t/2})$

v(t) = -0.05 $e^{-t/2}$

At t = 8s

v(t) = v(8) = -0.05 $e^{-8/2}$

v(t) = v(8) = -0.05 $e^{-4}$

v(t) = -0.05 x 0.223

v(t) = -0.01116V

(b) To get the power, we use the following relation:

p(t) = i(t) x v(t)

Power at t = 8

p(8) = i(8) x v(8)

i(8) = i(t = 8) = $10e^{-8/2}$

i(8) = $10e^{-4}$

i(8) = 10 x 0.223

i(8) = 2.23

Therefore,

p(8) = 2.23 x -0.01116

p(8) = -0.0249W

7 0

3 years ago

Read 2 more answers

Select the correct answer. Which statement best describes a hydrogen fuel cell? A This device uses bioethanol as an additive to

pochemuha

Answer:

Explanation:

The correct answer is "D. This device converts the chemical energy of hydrogen into electricity through a chemical reaction with oxygen or another oxidizing agent."

A talks about bio-ethanol fuel.

B is solar.

C is fossil.

E is electricity generation.

4 0

3 years ago

Read 2 more answers

Automobile engines normally have

Virty [35]

Answer:

Depending on the vehicle, there are typically between two and 12 cylinders in its engine, with a piston moving up and down in each.

Explanation:

hmu if you need more help! :)

5 0

3 years ago

The specific gravity of a substance that has mass of 10 kg and occupies a volume of 0.02 m^3 is a) 0.5 b) 1.5 c) 2.5 d) 3.5 e) n

zhuklara [117]

Answer:

Specific gravity is 0.5 so option (a) is correct option

Explanation:

We have given mass of substance m =10 kg

Volume $V=0.02m^3$

Density of substance is given by $Density\ d=\frac{mass}{volume}=\frac{10}{0.02}=500kg/m^3$

Specific gravity is given by $specific\ gravity=\frac{density\ of\ substance}{density\ f\ water}=\frac{500}{1000}=0.5$

So option (a) is correct option

5 0

3 years ago

So in my settings i set it to send notifications too my email so ik when smtn happens but it doesn't even send stuff too it.....

attashe74 [19]

Answer:

Did you make sure you did it and your notifications are on

3 0

3 years ago