Explanation:
A.
Using the wave equation:
v = d/t
Where,
v = velocity
d = distance
= 23.5 km
= 23500 m
t = time
= 2m 30s = 150 s
v = 23500/150
= 156.7 m/s
B.
From the calculated value above, it can be seen that the velocity of the heat blast is >>> than the velocity of sound above sea level.
Time , Work, Horsepower
Explanation:
In General, Power is defined as rate of doing work in physics.
1.) By work and Time, we can calculate power as follows,
Power = Work done per unit Time
= Work done / time
2.) From Horsepower we can directly get the power.
Horsepower (hp) is a unit to measure the power, or the rate at which work is done, usually in the output of engines or motors. There are many types of horsepower. Two common ways of defining horsepower is being used today are the mechanical horsepower (or imperial horsepower), which is about 745.7 watts, and the metric horsepower, which is approximately 735.5 watts.
4.22
Explanation:
The most acidic rainfall in New York State will have pH of 4.22 whereas the least acidic will be that of 4.40.
The pH scale expresses the acidity or alkalinity of aqueous solutions.
- The pH scale ranges from 1 to 4
- An acidic solution will have a pH value less than 7
We have given a range of values between 4.22 to 4.40
This implies that the pH values of rainfall in this region falls between these extremes.
The least value 4.22 is the most acidic
The value 4.4 is the the least acidic
The lower the pH value, the more acidic a solution is.
Learn more:
pH brainly.com/question/12985875
#learnwithBrainly
6.0 is the answer. hope this helps ya
