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3 years ago

What happenes to our body temperature on a cold winter day or a hot summer day

1 answer:

3 0

In cold winter day, the body temperature falls down from normal temperature of 98.6°F (37°C) to 95°F (35°C). In winter body losses heat faster than it generates heat. If the temperature fall further below 95°F (35°C), it is emergency condition known as Hypothermia. One has to consult doctor in this case.

In summer hot days, body evaporates water in the form of sweat, in order to remain itself cool. Rise of temperature up to 100°F is normal. It is recommended to hydrate body to maintain temperature in summer days.

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The index of refraction for red light in water is 1.331 and that for blue light is 1.340. A ray of white light enters the water

Alex Ar [27]

Answer:

(a) 47.08°

(b) 47.50°

Explanation:

Angle of incidence = 78.9°

<u>For blue light : </u>

Using Snell's law as:

$\frac {sin\theta_2}{sin\theta_1}=\frac {n_1}{n_2}$

Where,

Θ₁ is the angle of incidence

Θ₂ is the angle of refraction

n₂ is the refractive index for blue light which is 1.340

n₁ is the refractive index of air which is 1

So,

$\frac {sin\theta_2}{sin{78.9}^0}=\frac {1}{1.340}$

${sin\theta_2}=0.7323$

Angle of refraction for blue light = sin⁻¹ 0.7323 = 47.08°.

<u>For red light : </u>

Using Snell's law as:

$\frac {sin\theta_2}{sin\theta_1}=\frac {n_1}{n_2}$

Where,

Θ₁ is the angle of incidence

Θ₂ is the angle of refraction

n₂ is the refractive index for red light which is 1.331

n₁ is the refractive index of air which is 1

So,

$\frac {sin\theta_2}{sin{78.9}^0}=\frac {1}{1.331}$

${sin\theta_2}=0.7373$

Angle of refraction for red light = sin⁻¹ 0.7373 = 47.50°.

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3 years ago

Hy would you expect sodium (Na) to react strongly with chlorine (Cl)?

erastova [34]

Chlorine needs to gain one electron and sodium needs to lose one electron

8 0

3 years ago

Plz and ty ... free points, be nice

harkovskaia [24]

Answer:

Thank you!

Explanation:

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3 years ago

Read 2 more answers

What must the total force on an object be for it to travel with a constant velocity?

Phantasy [73]

Answer:

A) 0 N

Explanation:

When the velocity is constant, acceleration is always zero

Hence putting it in the formula

F=ma

Where F is force,m is mass and a is acceleration

F=m(0)

F=0

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3 years ago

Identify parts of a telescope? Please help meh!

MaRussiya [10]

The little tube on the top is the eyepiece, the big curved thing is the primary mirror and the slanted one is the secondary mirror

Please mark this brainliest!

6 0

4 years ago