Answer:
Explanation: Flow rate is how much volume is going through in an one second there for
Flow rate = Velocity × Cross sectional Area
Here cros sectional Area is = π r²
= π × 20²
= 1256 m²
Q = V ×A
8×10³ = V × 1256
V = 6.4 m/s
Answer:
Apply lubrication. You can use spray-dry lubricant, which is the preferred method, or wax. Simply rubbing a candle on the runners should be enough to get things working smoothly again. If you don't have a lubricant or a candle, tape can also get the job done.
Explanation:
Answer:
b) Distance covered before stopping.
Explanation:
If you want to find the distance d required to come to a stop starting at some initial speed v, with braking acceleration a, use the kinematic relation
vf2 - vi2 = 2ad
vi = initial speed at the moment braking begins = v
vf = final speed = 0 (comes to a full stop)
-v2 = 2ad
d = -v2/(2a)
Hey there!!!
your answer is going to be a, specular reflection.
hope this helps!!!
Complete Question
Calculate the average volume per molecule for an ideal gas at room temperature and atmospheric pressure. Then take the cube root to get an estimate of the average distance between molecules. How does this distance compare to the size of a molecule like ?
Answer:
The average volume per molecule is
The average distance between molecules
The size of is 100 times smaller than the obtained value
Explanation:
From the question we can deduce that we are considering an ideal
Generally the ideal gas equation is mathematically represented as
Here T is the room temperature with value T = 300 \ K
k is the Boltzmann constant with value
P is the atmospheric pressure with value
N is the number of molecules
Now the volume per molecule is mathematically deduced from the above equation as
=>
=>
Now the distance is mathematically evaluated as
=>
=>
Generally the size of is 115 pm which is 100 times smaller than the obtained value
Generally the size of is which is 10 times smaller than the obtained value