Question

Two thin blankets are much warmer than one thick blanket. Why?

Solution

Two blankets are warmer than single one of double the thickness because two blankets enclose a thin layer of air.
Air is a bad conductor of heat. Air neither allows the heat of body to escape nor it allows the external heat to sweep in.

Some More Questions From Mechanical Properties of Fluids Chapter

What is time period?

Define frequency.

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Mechanical Properties Of Fluids

Two thin blankets are much warmer than one thick blanket. Why?

Some More Questions From Mechanical Properties of Fluids Chapter

What is time period?

Define frequency.

What is the condition for motion to be simple harmonic motion?

In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

What determines the natural frequency of an oscillator?

Is there any relation between uniform circular motion and simple harmonic motion?

What is periodic motion?

Write down the expression for the instantaneous velocity and acceleration of particle vibrating in simple harmonic motion.

How do you define the mean position of particle executing simple harmonic motion?

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