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3 years ago

3 Current is measured in units called

Engineering

2 answers:

Tamiku [17]3 years ago

8 0

Answer:

Ampere (A)

Explanation:

The ampere is defined so the elementary charge e is 1.602 176 634 × 10−19 C or A•s.

Hope this helps <3

bixtya [17]3 years ago

6 0

Answer:

current is measured in Ampere (A)

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Given a force of 72 lbs at a distance of 15 ft, calculate the moment produced.

Elis [28]

Answer:

1425.78 N.m

Explanation:

Moments of force is calculated as ;

Moments= Force * distance

M= F*d

The S.I unit for moment of force is Newton-meter (N.m)

Given in the question;

Force = 72 lbs

1 pound = 4.45 N

72 lbs = 4.45 * 72=320.4 N

Distance= 15 ft

1ft= 0.3048 m

15 ft = 15*0.3048 = 4.57 m

d= 4.57 m

M= F*d

M=320.4*4.57 =1425.78 N.m

5 0

4 years ago

A part has been tested to have Sut = 530 MPa, f = 0.9, and a fully corrected Se = 210 MPa. The design requirements call for the

kobusy [5.1K]

Answer:

126984 cycles

Explanation:

Given data :

Sut = 530 MPa

f = 0.9

fully corrected Se = 210 MPa

using Miner's method attached below is the detailed solution of the given problem

when loaded with ± 225 MPa the number of cycles before it fails will be

≈ 126984

8 0

3 years ago

What percent of people are satisfied with the complaint and are likely to be loyal to the brand

ANTONII [103]

Answer:

A customer is 4 times more likely to defect to a competitor if the problem is service-related than price- or product-related – Bain & Company. 3. ... 96% of unhappy customers don't complain, however 91% of those will simply leave

Explanation:

8 0

3 years ago

Two heat exchangers are under consideration for purchase. A standard type of heat exchanger (code name HX1) has an initial insta

Leviafan [203]

Answer:

The lower capitalized cost is associated with HX1

Explanation:

The capitalized cost is basically the present cost. Therefore, for the Heat Exchanger HX1, the capitalized cost will be:

CC1 = First Cost

CC1 = - $ 20,000

Negative sign shows cash outflow.

Now, for Heat Exchanger HX2, we have:

CC2 = - $ 34,000 + ($ 4,000)(P/F, 6%, 10)

Now, we use the factor tables to calculate the present worth (P) of the salvage value, which is actually future worth, after 10 years at a compounded interest of 6% per year.

The factor table is provided in picture, with the value indicated.

CC2 = - $ 34,000 + ($ 4,000)(0.5584)

CC2 = - $ 34,000 + $ 2,233.6

CC2 = - $ 31,766.4

From the capitalized cost, taking look at the absolute values of both heat exchangers we can conclude that:

The Heat Exchanger that will result in lower capitalized cost is HX1

3 0

3 years ago

Determine the speed of sound in air at 400 K. Also determine the Mach number of an aircraft moving in the air at a velocity of 3

Reika [66]

Answer:

$\alpha = \sqrt{1.4 *0.287 \frac{KJ}{Kg K}*\frac{1000J}{1KJ} *400 K}= 400.899 m/s$

$Ma= \frac{310 m/s}{400.899 m/s}= 0.773$

Explanation:

For this case we have given the following data:

$T= 400 K$ represent the temperature for the air

$v = 310 m/s$ represent the velocity of the air

$k = 1.4$ represent the specific heat ratio at the room

$R = 0.287 KJ/ Kg K$ represent the gas constant for the air

And we want to find the velocity of the air under these conditions.

We can calculate the spped of the sound with the Newton-Laplace Equation given by this equation:

$\alpha = \sqrt{\frac{K}{\rho}}=\sqrt{k RT}$

Where K = is the Bulk Modulus of air, k is the adiabatic index of air= 1.4, R = the gas constant for the air, $\rho$ the density of the air and T the temperature in K

So on this case we can replace and we got:

$\alpha = \sqrt{1.4 *0.287 \frac{KJ}{Kg K}*\frac{1000J}{1KJ} *400 K}= 400.899 m/s$

The Mach number by definition is "a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound" and is defined as:

$Ma=\frac{v}{\alpha}$

Where v is the flow velocity and $\alpha$ the volocity of the sound in the medium and if we replace we got:

$Ma= \frac{310 m/s}{400.899 m/s}= 0.773$

And since the Ma<0.8 we can classify the regime as subsonic.

7 0

3 years ago