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Lady bird [3.3K]
3 years ago
12

URGENT PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST !!!

Physics
2 answers:
Salsk061 [2.6K]3 years ago
8 0
Sound waves because sound requires a medium such as air or water
user100 [1]3 years ago
6 0

Answer:

sound waves

Explanation:

have good day

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Sir Percival and his horse are standing still on a field of honor when Sir Rodney, atop his steed gallops by with a constant vel
Ludmilka [50]

Answer:

d. none of these

Explanation:

From the given information:

Let assume that Percival catches Sir Rodney's horse in time "t" after covering a certain distance "s"

Then, using the second equation of motion:

S = ut + \dfrac{1}{2}at^2

FOR Percival, we have:

S = (0\times t ) + \dfrac{1}{2} \times 0.6 \ m/s \times t^2  \\ \\  S = 0.3 \ m/s \times t^2  -- --  (1)

FOR Sir Rodney;

S = ut + \dfrac{1}{2}at^2

S = (3\times t ) + \dfrac{1}{2} \times 0 \times t^2  \\ \\  S =3t---  (2)

Equating both equations together; we have:

0.3t² = 3t

0.3t² - 3t = 0

0.3t(t - 10) = 0

If Percival's position at rest = 0

Then; t = 10 s.

8 0
3 years ago
solid particles or liquid drops in gas,called can stay in the upper atmosphere for months or years,reflecting away some incoming
luda_lava [24]
I'm sorry, but this is not a question. What do you need to know?
5 0
4 years ago
The closest star to our solar system is Alpha Centauri, which is 4.12 × 10^16 m away. How long would it take light from Alpha Ce
bonufazy [111]

Time = (distance) / (speed)

Time = (4.12x10^16 m) / (3 x10^8 m/s)

Time = 1.37 x 10^8 seconds

Divide the seconds by 86,400 to get days. Then divide the days by 365 to get years.

Time = about 4.35 years

4 0
3 years ago
1)Move your eraser on your desk What do you feel while you turn on the eraser?
V125BC [204]

Answer:

The warmth you feel is the heat generated by the force of friction created by the rough surfaces of your hands rubbing together. As the abrasives in your eraser are rubbed against paper, friction produces heat, which helps the rubber become sticky enough to hold onto the graphite particles.

Explanation:

I hope this helps and pls mark me brainliest :)

7 0
3 years ago
When does a object have the greatest kinetic energy?
Rufina [12.5K]
When Object is at zero height, and there is no potential energy possess by the object then it exerts Greatest Kinetic energy in it's whole Journey

Hope this helps!
8 0
4 years ago
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