Answer:
doubled
Explanation:
F=ma1----------(1)
2F = ma2-------(2)
Divide 2nd equation by 1st one
we get a1×2=a2
First take note that you're figuring 10am and 1pm. Their temperatures are 77 degrees and 83 degrees
To solve subtract 83-77=6
So it rose 6 degrees.
The expected time period between the observations of lightning and thunder would be 22.5 s.
How to calculate the time of sound waves?
The time taken by sound to reach a certain position can be calculated by the speed formula,

Where,
- speed = 0.343 km/s
- distance = 7.5 km
- time = ?
Put the values in the formula,

Therefore, the expected time period between the observations of lightning and thunder would be 22.5 s.
Learn more about the expected time:
brainly.com/question/16851276
D. Light as light is a wave