Does the cars mass alone determine whether the egg breaks?
1 answer:
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Answer:
a) W=85.225 kW
b)
Explanation:
First, consider the energy balance for the compressor: The energy that enters to the system (W and enthalpy of the feed flow) is equal to the energy that goes out from it (Heat Q and enthalpy of the exit flow):
Consider the enthalpy data from van Wylen 6th edition, Table B.2.2. According to that, ,
So, the power input to the compressor is:
b) The differential entropy change dS for a reversible heat transfer dQ at a temperature T is:
This equation can be integrated if the heat transfer surface temperature remains constant, which is the case, giving as a result:
Answer:
a = 16 m/s²
Explanation:
Given that,
Initial speed of a roler coaster, v₁ = 6 m/s
Final speed of a roller coaster, v₂ = 70 m/s
Time, t = 4s
We know that, acceleration of an object is equal to the rate of change of velocity. Let the acceleration be a. Its formula is given by :
or
The correct option is (1). Its value is equal to :
Its value is equal to 16 m/s².