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seraphim [82]
3 years ago
6

Write a scientific question that is specific and testable. Jack and Jill when up a hill to fetch a pail of water. Once they got

to the well where was no pail. All they found was a stopwatch and nine rocks (the exact same size). What is a scientific question Jack and Jill could ask using the items they found???
Physics
1 answer:
Naya [18.7K]3 years ago
3 0

The scientific method consists of making an observation, ask a question, formulate hypothesis, predict, test, iterate

The scientific question that can be asked is; <u>What is the </u><u>depth of the well</u>

<u />

The reason why the above question is appropriate is as follows:

The items Jack and Jill found at the well

  • No pail
  • A stopwatch
  • Nine equal sized rocks

The information they can get using what they found are;

The time it takes the rock to reach the water surface in the well

The depth of the well

The well's depth, <em>h</em>, is given using the equation of free fall, as follows;

h = \dfrac{1}{2} \cdot g \cdot t^2

Where;

g ≈ Acceleration due to gravity ≈ 9.81 m/s²

By recording the time each rock takes to reach the water surface in the well, the average depth of the well, h_{ave}, can be found by finding the average of the 9 calculated values for <em>h</em> using the 9 stones

Therefore;

The scientific question that is specific and testable is <u>how </u><u>deep </u><u>is the </u><u>well</u><u>, or what is the well's depth</u>

Learn more about scientific method here:

brainly.com/question/13096299

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lesya692 [45]
1)
The connections between neurons in the retina, specifically the connections referred to as “lateral inhibition,” help us see which of the following better?

<em><u>A) Contrast</u></em>
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<span>C) Colors

2)
</span>Improving the contrast of an image (making the dark regions darker and the light regions lighter) helps us to identify:

<em><u>A) The edges of objects</u></em>
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3)
What assumption does our visual system make in order to see curved surfaces (domes, holes)?

<em><u>A) Light comes from above</u></em>
B) Curved surfaces are always evenly lit
<span>C) Curved surfaces are always easy to see, no assumptions are made
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4)
Which part of the face does our brain pay the most attention to?

<u><em>A) Eyes and mouth</em></u>
B) Eyes and ears
<span>C) Eyes and chin
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5)
If all these assumptions sometimes lead to mistakes, for example in these optical illusions, why do we make them?

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<span><em><u>D) All of the above
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Hope that helps :)
*the correct answers are bolded, italicized, and underlined.*
4 0
3 years ago
If a pendulum clock keeps perfect time at the base of a mountain, will it also keep perfect time when it is moved to the tip of
vazorg [7]

Answer:

No

Explanation:

The period of a pendulum is given by

T=2\pi \sqrt{\frac{L}{g}}

where

L is the length of the pendulum

g is the acceleration due to gravity

We see that the period of the pendulum depends on the value of g. However, the value of the gravitational acceleration is different at different locations on Earth. In particular, at the top of the mountain the value of g is slightly lower than the value of g at the base of the mountain; in fact, g is given by

g=\frac{GM}{r^2}

where

G is the gravitational constant

M is the Earth's mass

r is the distance from the Earth's center

so since r is greater at the top of the mountain, g is lower, and therefore the period of the pendulum will be slightly longer.

8 0
3 years ago
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Luba_88 [7]
Both are used to produce energy to be used as electricity
8 0
3 years ago
What are three physical properties of a bowling ball
Sidana [21]

1) round

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3 0
4 years ago
HELP WKDUXHWOSUSG PLSSSS
dmitriy555 [2]

Hi!

givens: initial velocity = 0 m/s

time = 8.5 s

acceleration = 10 m/s^2

Unknown: displacement, velocity final

Equation:

Displacement = 1/2 (at^2) + viT

SS:

Displacement = 1/2 (10 * 8.5^2) + 0

Displacement = 361.25 m in a positive direction.

My math might be a little off, but I'm not sure...

But yeah! Hope this helped :)

8 0
3 years ago
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