Answer:
The value is
Explanation:
From the question we are told that
The efficiency of the carnot engine is
The efficiency of a heat engine is
The operating temperatures of the carnot engine is to
The rate at which the heat engine absorbs energy is
Generally the efficiency of the carnot engine is mathematically represented as
=>
=>
Generally the efficiency of the heat engine is
=>
Generally the efficiency of the heat engine is also mathematically represented as
Here W is the work done which is mathematically represented as
Here is the heat exhausted
So
=>
=>
D. Light from the sun is reflected off the moon's surface
The cyclist who travels 20 kilometers per hour for 15 kilometers
Answer:
<em>1.228 x </em><em> mm </em>
<em></em>
Explanation:
diameter of aluminium bar D = 40 mm
diameter of hole d = 30 mm
compressive Load F = 180 kN = 180 x N
modulus of elasticity E = 85 GN/m^2 = 85 x Pa
length of bar L = 600 mm
length of hole = 100 mm
true length of bar = 600 - 100 = 500 mm
area of the bar A = = = 1256.8 mm^2
area of hole a = = = 549.85 mm^2
Total contraction of the bar =
total contraction =
==> = <em>1.228 x </em><em> mm </em>
60 minutes = 1h
500/x = 10/100
She swam 5 kilometers per hour.