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Zarrin [17]
3 years ago
6

A dog runs with an initial speed if 7.5m/s on a waxed floor. it slides to a stop in 15 seconds. What is the acceleration ​

Physics
1 answer:
kap26 [50]3 years ago
6 0

Answer:

The answer is -0.5m/s2

Explanation:

I did the test and got it right.

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What physical property of light changes and causes the light to refract, or bend?
Tcecarenko [31]
I think it would be by the change in speed
For example if light travels from air to water it will slow down causing it to travel at a different angle/direction
3 0
3 years ago
A uniform 40-N board supports two children weighing 500 N and 350 N. If the support is at the center of the board and the 500-N
serg [7]

Answer:

b= 2.14 m

Explanation:

Given that

Weight of the board ,wt = 40 N

Wight of the first children , wt₁=500 N

Weight of the second children ,wt₂ = 350 N

The distance of the 500 N child from center ,a= 1.5 m

lets take distance of the 350 N child from center = b m

Now by taking the moment about the center of the board

We know that moment = Force x Perpendicular distance from the force

wt₁ x a = wt₂ x b

500 x 1.5 = 350 x b

b= 2.14 m

Therefore the distance of the 350 N weight child from the center is 2.14 m.

5 0
3 years ago
Please help what is the definition ligthspeed
aev [14]

Light speed is the speed at which light can travel in a "vacuum" (space for example).

The speed of light is constant and is exactly: 299,792,458 meters per second

ONLY IN A VACUUM!!

The speed of light changes when it goes through different mediums (such as from space to Earth, light travels slower in Earth).

Good luck!

3 0
3 years ago
Fill in the correct answers. A big wheel with twice the circumference of a small wheel will rotate with ____ the force and ___ t
Lina20 [59]

Answer:

C.

Explanation:

""""""" Twice,Half """"""

3 0
3 years ago
Read 2 more answers
Which of the following is true about scientific models? (2 points) Select one: a. Models are used to simplify the study of thing
Vanyuwa [196]

Question: Which of the following is true about scientific models?  Select one: A) Models are used to simplify the study of things. B) Computer models are the most reliable kind of model. C) Models explain past, present and future information. D) A model is accurate if it does not change over time.

Answer: <u>A) Models are used to simplify the study of things.</u>

<em>Hope this helps!.</em>

<em>~~~~~~~~~~~~~~~~~~~~~~</em>

<em>~A.W~ZoomZoom44</em>

5 0
3 years ago
Read 2 more answers
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