4 years ago

Which statement describes a scientific theory?

Physics

1 answer:

PSYCHO15rus [73]4 years ago

4 0

Answer:

A theory changes based on new observations and testing.

Explanation:

A scientific theory is a product of multiple trials and repeated experiments. It usually follows after carefully conducting and testing the validity of the hypothesis.

A scientific theory provides an explanation into how something behaves.

A law just states a finding will not explain it.

Most theories are tenable and can be improved upon when new observations and testing are carried out.

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Suppose we wrap a string around the surface of a uniform cylinder of radius 38.0 cm that is supported by an axle passing through

liraira [26]

Answer:

Angular acceleration = 23.68 rad / s²

Explanation:

Given that,

acceleration = 9m/s²

Therefore acceleration of string is 9m/s²

since string is constant in length

cylinder of radius 38.0 cm = 0.38m

Angular acceleration = a / r

Angular acceleration = 9 / 0.38

= 23.68 rad / s²

Angular acceleration = 23.68 rad / s²

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3 years ago

A crate is pushed up each of the two ramps shown in the diagram below. Based on the concept that simple machines make work easie

Naddik [55]

Answer:

ramp b requires less force than ramp a

Explanation:

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3 years ago

20 points!

MariettaO [177]

Do they give answer choices? or is it free write? i’ll help if you tell me!!

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3 years ago

How many neutrons does element X have if it’s atomic number is 28 and it’s mass number is 81?

labwork [276]

Well let’s put it this way. To find the neutrons you subtract the atomic atomic Nuremberg from the atomic mass. So

Mass=81-Number=28

81-28=53

Final answer is 53.

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3 years ago

A 15kg object is travelling 10m/s and hit a stationary 10kg object and stuck together. What is the final velocity of the objects

qaws [65]

Answer:

first object final velocity =2m/s

second = 12m/s

Explanation:

i hope this will help you,..,

7 0

3 years ago