<span>This can be explained by the effect of a material-specific parameter called Thermal conductivity. How well a material conducts heat is called Thermal conductivity. Metal has a greater thermal conductivity co-efficient and hence conducts heat very well Cardboard, on the other hand, is a very poor heat conductor. C</span>ardboard is composed of cellulose, a polymer that has no free electrons. Without <span>free electrons materials can neither conduct electricity or heat efficiently.</span>
Answer:
The value is 
and
Explanation:
From the question we are told that
The image distance is 
The focal length is 
From the lens equation we have that
=> 
=> 
Generally the magnification is
=> 
=>
The power ratio of a washing machine at 80 decibels is 10⁸ or 100,000,000.
<h3>What is the power ratio of a sound of 80 decibels?</h3>
Sound is a form of disturbance created by the vibrations of the medium and which travels across the medium in wave form.
A measure of sound intensity is decibels.
Decibels are a measure of sound on a logarithmic scale, where the number in front of the zero represents the number of powers of 10.
Therefore, the power ratio of a washing machine at 80 decibels will be 10⁸.
In conclusion, sound are vibrations which transmit energy.
Learn more about sound at: brainly.com/question/1199084
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Answer: C
Explanation: Ball 2 - Ball 1 - Ball 4 - Ball 3
Acceleration is equivalent to the rate of change of velocity.
Calculate the difference of velocity, and divide by the total time it took for the change to happen.
That is the answer.
