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2 years ago

Which of the following is an explanation of how the natural world works, based on experimentation?

Physics

1 answer:

ANTONII [103]2 years ago

7 0

The explanation of how the natural world works based on experimentation is ;A theory ( D )

A theory is proportionally related to an experiment because a theory is an informed /phenomenon based on facts approved or disproved by an experiment.

Therefore an explanation of how the natural world works should be factual based on experimentation. and not an opinion, while a law in science is developed based on ideal conditions and not natural world conditions.

Hence we can conclude that The explanation of how the natural world works based on experimentation is A theory.

Learn more : brainly.com/question/17661106

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An argon gas occupies 56.2 L at 760 torr. If the volume of gas dereases to 1/4 of the original volume ,calculate its final press

Elina [12.6K]

Answer:

3040 torr

Explanation:

Applying,

PV = P'V'..................... Equation 1

Where P = Initial Pressure, V = Initial volume, P' = Final pressure, V' = Final volume.

Make P' the subject of the equation

P' = PV/V'................. Equation 2

From the question,

Given: P = 760 torr, V = 56.2 L, V' = 56.2/4 = 14.05 L

Substitute these values into equation 2

P' = (56.2×760)/14.05

P' = 3040 torr

4 0

3 years ago

The total momentum before a collision is___to the total momentum after a collision

yulyashka [42]

Answer:

Equal

Explanation:

The law of conservation of energy states that the total momentum before and after a collision are equal

8 0

3 years ago

50°C is equivalent to a 82 F b- 90"F c 122"F

andre [41]

Answer:

50°C = 122 Fahrenheit

Explanation:

Here, we need to convert 50°C to F i.e. Fahrenheit. The conversion formula from degree Celsius to Fahrenheit is as follows :

$^{\circ}F=(^{\circ}C\times \dfrac{9}{5})+32$

Where, $^{\circ}C=50^{\circ}C$

$^{\circ}F=(50\times \dfrac{9}{5})+32$

$^{\circ}F=122^{\circ} F$

So, 50 degree Celsius is equal to 122 degree Fahrenheit. Hence, this is the required solution.

6 0

3 years ago

A grinding wheel 0.35 m in diameter rotates at 2600 rpm .

ddd [48]

It is calculated that a)The angular velocity of the wheel is 272.13 rad/s,

b)On the edge of the grinding wheel, the linear speed is 47.62 m/s,

and c) On the edge of the grinding wheel, the acceleration is 12958.08 m/s².

Calculation of angular velocity, linear speed & acceleration:

Provided that,

the diameter of the wheel = 0.35 m

So, the radius, r = 0.35/2 = 0.175 m

As 1 revolution = 2π rad

(a)the angular velocity, ω = 2600 rpm = $\frac{2600 * 2\pi }{60}$ rad/s

⇒ω = 272.13 rad/s

So, the angular velocity is 272.13 rad/s.

(b)The linear speed, v = r * ω

⇒v = 0.175 * 272.13

⇒v= 47.62 m/s

(c)The angular acceleration, $a=\frac{v^{2} }{r}$

$a = \frac{(47.62)^{2} }{0.175}$

⇒ $a$ = 12958.08 m/s²

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6 0

2 years ago

What would the reaction force of a person be that stands completely still with a mass of 100 kg?

Anastaziya [24]

-981N would be the reaction force of a person be that stands completely still with a mass of 100 kg.

An opposing force to an action force is referred to as a reaction force. The response force that results from surface engagement and adhesion while sliding is known as friction. Usually, the activities of applied forces result in reaction forces and reaction moments.

As,

F = ma

where, F = force

m = mass of object

a = acceleration due to gravity

Plugging in the values we get,

F = 100kg × 9.81m/s

F = 981 N

Since, reaction force acts opposite to action force so the correct answer is -981N.

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4 0

2 years ago