Part A.) The midpoint between the two speeds is just an estimate of the exact average speed. This is not exactly 27 m/s because although they have the same distance, they differ in speed. So, the answer is more or less, but not equal to, 27 m/s.
Part B.) The average speed is the total amount of distance traveled per total time.
Convert miles to meters: 1 mile = 1,609.34 meters
8 miles* 1,609.34 m/1 mile = 12,874.72 m
Average Speed = (12,874.72 m + 12,874.72 m)/[(12,874.72 m/24 m/s)+ (12,874.72 m/30 m/s)]
Average speed = 26.67 m/s
Answer:
Let's start by considering the ideal gas law:

where
p is the gas pressure
V is its volume
n is the number of moles
R is the gas constant
T is the absolute temperature
This equation can also be rewritten as

Now, if we consider a fixed amount of gas, this means that the number of moles (n) is constant. So we can rewrite the equation as

And therefore, if we consider a gas undergoing a certain transformation from 1 to 2, we can write

where 1 indicates the conditions of the gas at the beginning and 2 the conditions of the gas after the process. So, the change in pressure/temperature/volume of the gas can be found by using this equation.
Answer:
The speed of the wave is 128.94 m/s
Explanation:
Use the relationship between wavelength (lambda) and frequency (f) that are in a mutually reciprocal relationship via the speed of propagation:

The speed of the wave is 128.94 m/s
Another reason why cats hate water is attributed to their history. There is not much in a cat's background to recommend them for successful interactions with bodies of water, be it small or big. Cat's ancestors lived in dry arid places which means rivers or oceans weren't obstacles they had to face.
Hope this helps:)