Answer:
-10m/s
Explanation:
only the magnitude of the velocity will change due to the change in direction of the car.
To solve this problem we will apply the concepts related to energy conservation. For this purpose we have that the energy caused by friction is the difference between the initial and final energy.
The initial energy is all potential energy, the energy the parachutist has before she actually starts to fall
Here,
m = mass
g = Acceleration due to gravity
h = Height
The final energy is all kinetic energy, the energy the parachutist as just as she touches the ground is
Here,
m = Mass
v =Velocity
Replacing,
Replacing the values to find the Energy caused by the friction we have that,
Answer:
433 mph
Explanation:
We know that
...Eq(1)
Here,
Distance =1,592 miles
Time=3.68 hours
Putting the value of distance and Time in the Eq(1) We get
Velocity =
therefore Average velocity is 433 mph
Answer: The acceleration due to gravity is the constant pull towards the core of the earth due to gravity on earth. It is abbreviated by the letter g and is equal to -9.81 m/s².
Explanation:
Answer:
Yes, it can can be completed adiabatically
Explanation:
To solve the problem we will resort to the theory of thermodynamics,
It is necessary to develop this problem to resort to the A-11E tables in English Units for R134a (since the problem requires it, if it were SI just to change to that table)
State 1 indicates that the refrigerant is at 60 ° F,
In the first table (attached image of the value taken) the value of the entropy is
For State 2 the refrigerant is at 50% quality and at a pressure of
In table 2 of the refrigerant (for the pressure values) we perform the reading and we have to
We know that,
The change in enthalpy would be given by
<em>The change in enthalpy is positive, so the process can be completed adiabatically</em>