4 years ago

Which of the following employs the use of an external combustion engine?

Physics

1 answer:

just olya [345]4 years ago

7 0

The answer should be ''all the above''

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Which of these will have the same units if acceleration is multiplied by time? Force Time velocity Pressure

Leno4ka [110]

Answer:

Velocity

Explanation:

Velocity equals the original velocity... Plus

the acceleration is multiplied by time.

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3 years ago

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To provide some perspective on the dimensions of atomic defects, consider a metal specimen that has a dislocation density of 105

-Dominant- [34]

Explanation:

LD₁ = 10⁵ mm⁻²

LD₂ = 10⁴mm⁻²

V = 1000 mm³

Distance = (LD)(V)

Distance₁ = (10⁵mm⁻²)(1000mm³) = 10×10⁷mm = 10×10⁴m

Distance₂ = (10⁹mm⁻²)(1000mm³) = 1×10¹² mm = 1×10⁹ m

Conversion to miles:

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4 years ago

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d

kirill [66]

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3 years ago

A Carnot engine has an efficiency of 0.537, and the temperature of its cold reservoir is 379 K.

katen-ka-za [31]

Answer:

(A) Th = 818.6 K

(B) Qh = 14211.7 J

Explanation:

efficiency (n) = 0.537

temperature of cold reservoir (Tc) = 379 K

heat rejected (Qc) = 6580 J

(A) find the temperature of the hot reservoir (Th)

n = 1 - $\frac{Tc}{Th}$

0.537 = 1 - $\frac{379}{Th}$

$\frac{379}{Th}$ = 1 - 0.537 = 0.463

Th = $\frac{379}{0.463}$

Th = 818.6 K

(B) what amount of heat is put into the engine (Qh) ?

from $\frac{Tc}{Th} = \frac{Qc}{Qh}$

Qh = 6580 ÷ $\frac{379}{818.6}$

Qh = 14211.7 J

8 0

3 years ago