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
![\eta = [ 1 - \frac{T_1 }{T_2} ]](https://tex.z-dn.net/?f=%5Ceta%20%3D%20%20%5B%201%20-%20%5Cfrac%7BT_1%20%7D%7BT_2%7D%20%20%5D)
=> ![\eta = [ \frac{T_2 - T_1}{T_2} ]](https://tex.z-dn.net/?f=%5Ceta%20%3D%20%20%5B%20%5Cfrac%7BT_2%20-%20T_1%7D%7BT_2%7D%20%5D)
=> 
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
=> 
=>
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Answer:
C. It is caused by flowing negatively charged particles.
Explanation:
Current electricity is caused by flowing negatively charged particles. The negatively charged particles that are responsible for the flow of electricity are called electrons.
The force is equal at all points in the field as the field lines are parallel in a uniform field. So, negatively charged particles will move in the opposite direction to the current.
Hence, the correct answer is "C. It is caused by flowing negatively charged particles."
Answer:
Part a) 
Part b) 
Explanation:
Part a) what is its frequency, in rev/s
we have that
An old-fashioned LP record rotates at 33 1/3 RPM
so
Convert mixed number to an improper fraction
Remember that
Convert rev/min to rev/sec
Simplify
Part b) what is it period, in seconds
we know that
The period is the reciprocal of the frequency
therefore
the frequency is
Answer:
Resultant displacement = 1222.3 m
Angle is 88.3 degree from +X axis.
Explanation:
A = 550 m north
B = 500 m north east
C = 450 m north west
Write in the vector form
A = 550 j
B = 500 (cos 45 i + sin 45 j ) = 353.6 i + 353.6 j
C = 450 ( - cos 45 i + sin 45 j ) = - 318.2 i + 318.2 j
Net displacement is given by
R = (353.6 - 318.2) i + (550 + 353.6 + 318.2) j
R = 35.4 i + 1221.8 j
The magnitude is
The direction is given by
