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3 years ago

4. Kamini uses a thick blanket for sleeping during cold weather. What is the function of the blanket? Explain your answer.

Physics

2 answers:

aniked [119]3 years ago

7 0

Answer:

The function of the blanket is to provide warmth to Kamini, since the weather is cold they use a thick blanket.

Explanation:

Helga [31]3 years ago

6 0

Answer:

the function of the blanket is to keep Kamins warm so he wouldn't get cold

Explanation:

the thick layer of the material acts as a body protector from the cold weather

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A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks from the spotlight toward the building at a speed

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v = 2.85 m/s

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By the law of similarity of the triangle we can say

$\frac{height\: of\: man}{distance\: of \: man\: from \: spotlight} = \frac{height \:of \:image}{distance\: of \:wall\: from\: spotlight}$

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3 years ago

Read 2 more answers

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a s

baherus [9]

Given that,

Central maximum = 1 cm

Distance from the window shade to the wall =4 m

We know that,

The visible range of the sun light is 400 nm to 700 nm.

(a). We need to calculate the average wavelength

Using formula of average wavelength

$\lambda_{avg}=\dfrac{\lambda_{1}+\lambda_{2}}{2}$

Put the value into the formula

$\lambda_{avg}=\dfrac{400+700}{2}$

$\lambda_{avg}=550\ nm$

(b). We need to calculate the diameter of the pinhole

Using formula for diameter

$w=\dfrac{2.44\lambda L}{D}$

$D=\dfrac{2.44\lambda L}{w}$

Put the value into the formula

$D=\dfrac{2.44\times550\times10^{-9}\times4}{1\times10^{-2}}$

$D=0.537\ mm$

Hence, (a). The average wavelength 550 nm.

(b). The diameter of the pinhole is 0.537 mm.

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4 years ago

4. Kamini uses a thick blanket for sleeping during cold weather. What is the function of the blanket? Explain your answer.​

4. Kamini uses a thick blanket for sleeping during cold weather. What is the function of the blanket? Explain your answer.