Carbon and hydrogen are examples of pure substances or
2 answers:
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Answer:
The pressure is constant, and it is P = 150kpa.
the specific volumes are:
initial = 0.062 m^3/kg
final = 0.027 m^3/kg.
Then, the specific work can be written as:
The fact that the work is negative, means that we need to apply work to the air in order to compress it.
Now, to write it in more common units we have that:
1 kPa*m^3 = 1000J.
-5.25 kPa*m^3/kg = -5250 J/kg.
Answer:
Net force, F = 205.59 N
Explanation:
Given that,
Mass of a bobsled, m = 89 kg
Initial speed of the bobsled, u = 0
Distance travelled, d = 33.8 m
Final speed of the bobsled, v = 12.5 m/s
To find,
The magnitude of the net force
Solution,
Let a is the acceleration of the bobsled. Using the third equation of kinematics as :
Let F is the magnitude of net force acting on the bobsled. It can be calculated as :
F = 205.59 N
Therefore, the magnitude of the net force acting on the bobsled is 205.59 N.
Answer: a) work done = 3946429.5 J
b) work done = 943.22 nutritional calories
Explanation:
