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3 years ago

The fact that desert sand is very hot in the day and very cold at night is evidence that sand has

Physics

2 answers:

insens350 [35]3 years ago

5 0

Answer:

A) a low specific heat.

Explanation:

As we know that heat given to the sand will increase it temperature

so we can say

$Q = ms\Delta T$

here we will have

$\Delta T = \frac{Q}{ms}$

so now we will have

more change in temperature due to heat given to the sand will show that it must have low specific heat capacity as it inversely depends on the specific heat capacity of the sand

so correct answer will be

A) a low specific heat.

4vir4ik [10]3 years ago

4 0

The fact that desert sand is very hot in the day and very cold at night is evidence that sand has

A) a low specific heat. Answer: A

Explanation: Because the fact that desert sand is very hot in the day and very cold at night is evidence that sand has

A) a low specific heat.

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Which statement is true for light passing into a medium that is less optically dense than the first medium through which it pass

BigorU [14]

Answer:

The correct option is;

The index of refraction of the second medium is lower

Explanation:

The index of refraction of a material indicates the magnitude of the optical density of a material. The index of refraction or the refractive index, n, are indices (ratio) of the speed of light through an optically dense medium relative to the speed of light through a vacuum.

The definition of the refractive index is the number of times light travelling through a medium would be slower than light travelling through vacuum

Therefore, the index of refraction of a second medium that is less optically dense than a first medium from which light originates and travels through it would be lower than the index of refraction of the first medium

5 0

3 years ago

Read 2 more answers

The energy of an electromagnetic wave is related to

Sedbober [7]

Answer:

The energy carried by an electromagnetic wave is proportional to the frequency of the wave. The wavelength and frequency of the wave are connected via the speed of light: Electromagnetic waves are split into different categories based on their frequency (or, equivalently, on their wavelength).

Explanation:

6 0

3 years ago

If there is an unusually windy month one might anticipate a. Higher tides b.increased wave size c. Unpredictable currents d. Low

Luden [163]

I belive it is b. increased wave size

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3 years ago

A woman exerts a constant horizontal force on a large box. As a result, the box moves across a horizontal floor at a constant sp

d1i1m1o1n [39]

Answer:C

Explanation:

When a constant horizontal force is applied to the box, box started moving in the horizontal direction such that it moves with constant velocity $v_0$

Constant velocity implies that net force on the box is zero

i.e. there must be an opposing force which is equal to the applied force and friction force can serve that purpose.

So option c is the correct choice.

6 0

4 years ago

a baseball is pitched with a speed of 35.0m/s. how long does it take the ball to travel 18.4 m from the pitchers mound to home p

Vlad [161]

Given the speed and the distance, to find time you can use the formula speed is equal to distance over time. From there you can manipulate the equation for time to equal the distance divided by speed. Time is equal to 18.4 meters divided by 35m/s which equals 0.526 seconds.

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3 years ago