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3 years ago

Which question cannot be answered using scientific methods?

2 answers:

8 0

Extra Comment: Judging by the way this question has been worded, I may be answering this question incorrectly, but I’ll try my best to meet what you were asking for!

Answer: Some people say that everything can be answered if you just add a little bit of scientific methods to answering a question, but that is wrong. Not everything can be answered with using scientific methods. For example, questions that can not be answered using any form of a scientific method would be any questions regarding anything personal, such as your name, birthday, or the things that you enjoy. For instance, I like anime, but you can’t figure out that I like anime with science.

serg [7]3 years ago

3 0

Answer:

Questions that cannot be answered through scientific investigation are those that relate to personal preference, moral values, the supernatural, or unmeasurable phenomena.

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If the rectangular barge is 3.0 m by 20.0 m and sits 0.70 m deep in the harbor, how deep will it sit in the river?

leva [86]

The harbour contains salt water while the river contains fresh water. So assuming that the densities of fresh water and salt water are:

density (salt water) = 1029 kg / m^3

density (fresh water) = 1000 kg / m^3

The amount of water (in mass) displaced by the barge should be equal in two waters.

mass displaced (salt water) = mass displaced (fresh water)

Since mass is also the product of density and volume, therefore:

<span>[density * volume]_salt water = [density * volume]_fresh water ---> 1</span>

First we calculate the amount of volume displaced in the harbour (salt water):

V = 3.0 m * 20.0 m * 0.70 m

V = 42 m^3 of salt water

Plugging in the values into equation 1:

1029 kg / m^3 * 42 m^3 = 1000 kg/m^3 * Volume fresh water

Volume fresh water displaced = 43.218 m^3

Therefore the depth of the barge in the river is:

43.218 m^3 = 3.0 m * 20.0 m * h

<span>h = 0.72 m (ANSWER)</span>

8 0

3 years ago

A grandfather clock has a pendulum that consists of a thin brass disk of radius r = 13.62 cm and mass 1.199 kg that is attached

Feliz [49]

Answer:

Explanation:

Expression for time period of a pendulum is as follows

T = $2\pi\sqrt{\frac{l}{g} }$

l is length of pendulum from centre of bob and g is acceleration due to gravity

Given

Time period T = 1.583

g = 9.846

Substituting the values

1.583 = $2\pi\sqrt{\frac{l}{9.846} }$

l = $\frac{(1.583)^2\times9.846}{4\times(\frac{22}{7})^2 }$

l = .6244 m

= 62.44 cm

Length of rod = length of pendulum - radius of bob

= 62.44 - 13.62

= 48.82 cm

= .488 m

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2 years ago

16. Cassandra notices that when she breathes on a cool window, the water vapor in her breath forms

choli [55]

Answer: A

Explanation:I studied .

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2 years ago

Awave has a period of 1. What is its frequency?

Andrei [34K]

Answer:

Frequency, f = 1 unit

Explanation:

It is given that,

Period of the wave, T = 1 unit

We need to find the frequency of the wave. There exist an inverse relationship between period and the frequency of the wave. It is given by :

$T=\dfrac{1}{f}$

$f=\dfrac{1}{T}$

$f=\dfrac{1}{1\ units}$

f = 1 unit

So, the frequency of the wave is 1 unit. Hence, this is the required solution.

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A rocket is fired straight up. It contains two stages (Stage 1 and Stage 2) of solid rocket fuel that are designed to burn for 1

insens350 [35]

Answer: a) 1875m. (b) 8.66s

Explanation:

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