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3 years ago

Good experimental design includes a hypothesis that is

Physics

2 answers:

scZoUnD [109]3 years ago

7 0

Answer: testable and observable.

Explanation:

Experimental design includes the concepts which are directly related to the plan which is required to be followed so as to deduce a reasonable outcome. It must include a hypothesis which should be testable and observable on the basis of application of suitable scientific methodology. A hypothesis is presumed statement related to a particular natural phenomena or event which is required to be proved by implementation of scientific experimentation procedure and direct observation.

Ratling [72]3 years ago

3 0

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Good experimental design includes a hypothesis that is <span>testable and observable.</span>

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Using a mass of 1.8 g and the volume displaced by the sample, calculate the sample's density. A) 0.17 g/mL B) 0.35 g/mL C) 0.60

fomenos

The answer to that probably would be C excuse me if I am wrong.

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4 years ago

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2 kg<br> Use 10 m/s2 for g

Iteru [2.4K]

Answer:

See below

Explanation:

At point A the PE = mgh = 2 * 10 * 1 = 20 J

at point B, all of the PE , 20 J , is converted to Kinetic Energy

KE = 1/2 m v^2

20 = 1/2 (2)(v^2 )

20 = v^2 v = sqrt 20 = 4.47 m/s

for the friction part

vf = vo t + 1/2 a t^2 vf = final velocity = 0 (stopped)

vo = original velocity = 4.47 m/s

a = -1 m/s^2

0 = 4.47 t + 1/2 (-1) t^2

- .5t^2 + 4.47 t = 0

t ( -.5t+ 4.47) = 0 shows t = 4.47/.5 = 8.9 seconds

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2 years ago

when a solid wheel rotates about a fixed axis do all of the points of the wheel have the same tangential speed?

vitfil [10]

Yes they should all be going the same speed.

Hope this helped :)

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3 years ago

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All of the following are examples of environmental influences on personality except __________.

frosja888 [35]

Answer: B

Explanation:

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3 years ago

An astronaut circles the earth in a satellite at an altitude of 150 km. If the diameter of his pupils is 2.0 mm and the average

Fiesta28 [93]

Answer:

d = 49.5 m

hence we can say it is conceivable that he can distinguish sports stadiums on earth's surface but in Private houses? Cars? it can not becayuse they are are very small

Explanation:

Given data

altitude = 150 km

diameter = 2.0 mm

wavelength = 550 nm

to find out

is it conceivable that he can distinguish sports stadiums

solution

we will apply here formula that is

∅ = 1.2 λ / D

put here λ = 550 × $10^{-9}$ m and D = 2 × $10^{-3}$ m

∅ = (1.2 ) 550 × $10^{-9}$ / 2 × $10^{-3}$

∅ = 3.30 × $10^{-4}$ rad

d = 150 × $10^{3}$ × 3.30 × $10^{-4}$

d = 49.5 m

hence we can say it is conceivable that he can distinguish sports stadiums on earth's surface but in Private houses? Cars? it can not becayuse they are are very small

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3 years ago