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Dafna1 [17]
3 years ago
15

Sound waves can travel through which mediums?

Physics
1 answer:
aksik [14]3 years ago
5 0

Answer:

B. Solids, liquids, and gases.

Explanation:

I have no explanation.

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John realized that his orchard has been invaded by certain harmful invasive plants. These plants are consuming all the soil nutr
Dovator [93]
John used smothering as the method to control the harmful invasive plants in his orchard. Smothering is an example of a manual method of control and it works best in a small population of invasive species. Smothering involves covering the invasive species with a barrier that is highly impenetrable for one growing season in order to prevent these species from thriving in the environment.
7 0
3 years ago
A tennis ball is dropped from a roof. If it takes 38.9 seconds to reach the ground, how fast is the ball moving just before it h
Ilya [14]

Answer:

The velocity of the ball before it hits the ground is 381.2 m/s

Explanation:

Given;

time taken to reach the ground, t = 38.9 s

The height of fall is given by;

h = ¹/₂gt²

h = ¹/₂(9.8)(38.9)²

h = 7414.73 m

The velocity of the ball before it hits the ground is given as;

v² = u² + 2gh

where;

u is the initial velocity of the on the root = 0

v is the final velocity of the ball before it hits the ground

v² = 2gh

v = √2gh

v = √(2 x 9.8 x 7414.73 )

v = 381.2 m/s

Therefore, the velocity of the ball before it hits the ground is 381.2 m/s

5 0
2 years ago
Radar use reflected microwaves to detect objects and measure their... what?
Sloan [31]
Height and depth..... for sure....

7 0
3 years ago
A company is creating a new mosquito repellent, and needs to figure out how much is needed to stop mosquito bites. They find vol
Jlenok [28]

The independent variable is the different amount of repellent each person is given. This is because it does not depend on any variable. The dependent variable is what they are measuring, which would be the number of bites on each volunteer.
I hope this helps! :)

3 0
1 year ago
Which of these are a covalent compound?
nikdorinn [45]
C is a non-metal and so is O. So the answer is CO
8 0
3 years ago
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