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ss7ja [257]
3 years ago
6

What is the thermal efficiency a carnot engine operating between the highest and lowest temperatures reached by this engine?

Physics
1 answer:
vladimir1956 [14]3 years ago
6 0
Rwvgrevtbtbybty4brcw tegt53rgtrvtb4yb46yb46y
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yaroslaw [1]

Answer: 46.53

Explanation:

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3 years ago
1. A stationary 50 tonne submarine fires a missile of mass 40kg at
White raven [17]

The velocity of the submarine immediately after firing the missile is 0.0104 m/s

Explanation:

Mass of the submarine M=50 tonne=50\times 1000=50000kg

Mass of the missile m=40  kg

velocity of the missile v= 13m/s

we have to calculate the velocity of the submarine after firing

This is the recoil velocity and its expression is derived from the law of conservation of momentum

recoil velocity of the submarine

V=-mv/M\\=-40\times 13/50000\\=0.0104 m/s

8 0
3 years ago
If a boy with 50kg run in 3m/s what is his velocity
stepladder [879]

His velocity is 3 m/s in the direction in which he is running in. which.

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3 years ago
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7 0
3 years ago
1. Two-point charges, QA = +8 μC and QB = -5 μC, are separated by a distance r = 10 cm. What is the magnitude and direction of t
densk [106]

Answer:

F = 36 N

Explanation:

Given that,

Charge, q₁ = +8 μC

Charge, q₂ = -5 μC

The distance between the charges, r = 10 cm = 0.1 m

We need to find the magnitude of the electrostatic force. The formula for the electrostatic force is given by :

F=\dfrac{kq_1q_2}{r^2}\\\\F=\dfrac{9\times 10^9\times8\times 10^{-6}\times 5\times 10^{-6}}{(0.1)^2}\\F=36\ N

So, the magnitude of the electrostatic force is 36 N.

3 0
2 years ago
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