Is Air Heterogenous Homogenous suspension compound element

How does the speed of a sound wave change as the medium through which it traveks changes?

uranmaximum [27]

Increase as density increase and vise versa.
The wavelength increases when a sound wave travels from a less dense to a more dense medium, the speed increases, and the frequency stays the same.

8 0

4 years ago

Given the recent evidence suggesting that species change due to a certain genetic variations, what would be true?

boyakko [2]

Answer:

c) mutation and natural selection both cause changes in a population

Explanation:

Hope it help

Mark me as brainliest

6 0

3 years ago

8 A car accelerates at a rate of 10m/s

zheka24 [161]

Answer:

From the First Law of Motion

Vf = Vi + at

"It reaches a speed of 52m/s" meaning the Final speed Vf=52

a(acceleration)=10m/s²

t=4s

Applying the formula

52=Vi + 10(4)

Vi = 52-40

Vi = 12m/s

5 0

3 years ago

How would the moon appear from Earth if the moon did not rotate?

andrey2020 [161]

It would mean that only one side of earth would be light and the other dark all the time also we would only see the sun on one side and on the other we see the moon

6 0

3 years ago

Read 2 more answers

Consider a collection of charges in a given region and suppose all other charges are distant and have a negligible effect. Furth

AlladinOne [14]

Answer:

E. Some charges in the region are positive, and some are negative.

Explanation:

Electric potential is given as;

$V = \frac{W}{Q}$

where;

W is the work done in moving a charge between two points which have a difference in potential

Q is quantity of charge in the given region

If the electric potential at a given point in the region is zero, then sum of the charges in the given region must be equal to zero. For the charges to sum to zero, some will be positive while some will be negative,.

Therefore, the correct statement in the given options is "E"

E. Some charges in the region are positive, and some are negative.

3 0

4 years ago