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Arada [10]
4 years ago
9

What are two scales scientists use to measure temperature and what is the official si unit for tempature?

Physics
1 answer:
vodka [1.7K]4 years ago
3 0
Kelvin, Celsius is used too, but they are the same scale (Celsius starts at 273.15 K, freeze point of water.
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Two strings have the same length and tension. One string has a mass per length that is 4 times that of the other string. The fun
Anit [1.1K]

Answer:

f_1=\frac{f_2}{2}

Explanation:

the Frequency of string is given by

f= \frac{1}{2l}\times\sqrt{\frac{T}{\mu }}

T= tension in the string

μ= mass per unit length of string

l= length of string

in the given question \mu_{1}= 4\mu_{2}

here subscript 1 is massive string and subscript 2 is lighter string

f_{1}= \frac{1}{2l}\times\sqrt{\frac{T}{\mu_{1} }}

and

f_{2}= \frac{1}{2l}\times\sqrt{\frac{T}{\mu_{2} }}

dividing f_1  by f_2 we get

now \frac{f_{1}}{f_{2}} =\sqrt{\frac{\mu_2}{\mu_1} }

= \sqrt{\frac{\mu_2}{4\mu_2} }

= \frac{1}{2}

⇒ f_1=\frac{f_2}{2}

hence the fundamental frequency of massive string is half of the fundamental frequency of lighter string

5 0
3 years ago
How has the model of our solar system changed over time?
sineoko [7]
It depends.<span>Ptolemy was one of the most famous astronomers who was convinced that or solar system was geocentric, or revolving around the earth. Then, Copernicus came around, along with Galileo, and the attempted to convince people that that wasn't true, but that we were revolving around the sun. In fact, if you're writing an essay, a good point to add would be that Galileo spent a large part of his life imprisoned for "disobedience of the (Roman) Gods.)"</span>
7 0
4 years ago
Read 2 more answers
Ingrid is jogging at 9 km/h, she tosses a relay stick at 16 km/h to her teammate. How fast is the relay stick moving relative to
sesenic [268]

Answer:

27km/h

Explanation:

3 0
3 years ago
What is the weight of an object on Earth with a mass of 90.0kg?
Ksivusya [100]

Answer:

Weight (Force) = mass x acceleration due to gravity Weight = 90.0 kg x 9.80 m/s2 Weight = 882 N or 882 kg m/s2 Page 2 Newton's Notes 2 Gravity has an effect on an object in the vertical direction only.

8 0
3 years ago
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The solid steel shaft AC has a diameter of 25 mm and is supported by smooth bearings at D and E. It is coupled to a motor at C ,
Degger [83]

Answer:

Maximum shear stress in region AB=1.04 MPa

Maximum shear stress in region BC=3.11 MPa

Explanation:

The explanation is attached in the attachments.

4 0
4 years ago
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