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lina2011 [118]
3 years ago
11

79. An example of an electrical insulator is

Physics
2 answers:
vampirchik [111]3 years ago
6 0

Answer:

B. Glass

Explanation:

An electrical insulator is a substance that does not conduct electricity.

Glass has tightly bounded electrons, that is why it is an insulator of electricity.

GarryVolchara [31]3 years ago
4 0

Hey there! The answer to your question is below.

The correct answer would be B.GLASS

Glass is a insulator and rubber too

Glass, wood, plastic and more are all insulators

So the answer would be B. Glass

Hope this helps!

By: xBrainly

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Question 1
valentina_108 [34]

The distance covered is simply the length of the entire trip, which is 12m + 16m, or 28m.

The displacement is the distance from the starting point to the ending point along with the direction of the net motion. The dog walks 12m east then 16m west, so its resultant displacement is 4m west.

6 0
3 years ago
If one is missing the opsin which detects wavelengths of approximately 560 nm what color would they be unable to see?
Licemer1 [7]

As per the question the wavelength of color of light is given as 560 nm.

We are asked to determine the color corresponding to this wavelength.

The visible spectrum corresponds to the wavelength range of 380 nm to 750 nm.

The visible spectrum contains seven colors of light.

The green light corresponds to the wavelength range of 495 nm to 570 nm.

Hence the correct answer to this question will be green light.



4 0
4 years ago
14. A spoon is placed in a cup of hot
sweet [91]

Answer:

Specific heats

Explanation:

6 0
3 years ago
Can we use a clinical thermometer to measure the temperature of a candle flame​
miv72 [106K]

In theory, yes. The 2 problems are the materials used for clinical thermometers, & the temperature capacity of the clinical thermometer. If anything, change the material & extend the measurement threshold. At that point, it wouldn´t be used for clinical garbage anymore.

3 0
4 years ago
A industrial (large) pressure cooker operates at 275 kPa. Initially there is 10 kg of water at 20°C, the cooker is operated unt
alex41 [277]

Answer:

Q_{in} = 25349.92\,kJ

Explanation:

Let establish a control volume in the industrial pressure cooker, which is a transient state system. From the First Law of Thermodynamics, the heating process is modelled:

Q_{in} + m_{1}\cdot h_{1} - m_{2}\cdot h_{2} = (m_{1}-m_{2})\cdot u_{2} - m_{1}\cdot u_{1}

The heat transfered to the cooker is:

Q_{in} = m_{2}\cdot h_{2} - m_{1}\cdot h_{1} + (m_{1}-m_{2})\cdot u_{2}-m_{1}\cdot u_{1}

Properties at each state are described below:

State 1

u_{1} = 83.913\,\frac{kJ}{kg}

h_{1} = 83.915\,\frac{kJ}{kg}

State 2

u_{2} = 2540.1\,\frac{kJ}{kg}

h_{2} = 2720.9\,\frac{kJ}{kg}

The heat transfered to the cooker is:

Q_{in} = (9\,kg)\cdot (2720.9\,\frac{kJ}{kg} ) - (10\,kg)\cdot (83.915\,\frac{kJ}{kg} ) + (1\,kg) \cdot (2540.1\,\frac{kJ}{kg} )-(10\,kg)\cdot (83.913\,\frac{kJ}{kg} )

Q_{in} = 25349.92\,kJ

7 0
3 years ago
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