<span>The car's reference frame should be your go to. Just have the car be stationary (modifying the velocity of the rain rather than the car's). From there you should be able to get the rain's velocity by a simple equation set.</span>
Molecular structure of the primary cell wall in plants. Up to three strata or layers may be found in plant cell walls: The middle lamella, a layer rich in pectins. This outermost layer forms the interface between adjacent plant cells and glues them together.
Answer:
B)
D)
Explanation:
Carnot cycle ;
This is the ideal cycle for all type of heat engine.All the process in the Carnot cycle is reversible processes ( those process does not leave any effect on the system as well as surrounding when the process is reversed is known as reversible process).It have four process in which two process is constant temperature and other two is isentropic or we can say that reversible adiabatic.
In the two process(constant temperature) only heat interaction take places and other two process(adiabatic) only work interaction take places.
So the option B and D is incorrect for Carnot cycle.
Answer:
Part 1) Time of travel equals 61 seconds
Part 2) Maximum speed equals 39.66 m/s.
Explanation:
The final speed of the train when it completes half of it's journey is given by third equation of kinematics as
where
'v' is the final speed
'u' is initial speed
'a' is acceleration of the body
's' is the distance covered
Applying the given values we get
Now the time taken to attain the above velocity can be calculated by the first equation of kinematics as
Since the deceleration is same as acceleration hence the time to stop in the same distance shall be equal to the time taken to accelerate the first half of distance
Thus total time of journey equals
Part b)
the maximum speed is reached at the point when the train ends it's acceleration thus the maximum speed reached by the train equals 
