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3 years ago

True or false the refraction of a wave is how many wavelengths pass a fixed point each second

Physics

2 answers:

Ksenya-84 [330]3 years ago

8 0

False. That description fits the wave's 'frequency'.
It has nothing to do with refraction.

professor190 [17]3 years ago

6 0

Answer:

False

Explanation:

- Refraction is the phenomenon that occurs when a light wave crosses the interface between two different mediums. Because of the different index of refraction of the two mediums (also called optical density), the speed of light in the two mediums is different, so the light changes direction.

- The definition described in the text of this problem, instead, is the definition of frequency. In fact, frequency of a wave is defined as the number of complete cycles (or of complete wavelengths) that pass a fixed point each second.

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When water freezes, its volume increases by 9.05%. What force per unit area is water capable of exerting on a container when it

AnnZ [28]

Answer:

The Pressure is 0.20 MPa.

(b) is correct option.

Explanation:

Given that,

Change in volume = 9.05%

{tex]\dfrac{\Delta V}{V_{0}}=0.0905[/tex]

We know that.

The bulk modulus for water

$B=0.20\times10^{10}\ N/m^2$

We need to calculate the pressure difference

Using formula bulk modulus formula

$B=\Delta P\dfrac{V_{0}}{\Delta V}$

$\Delta P=B\dfrac{\Delta V}{V_{0}}$

$\Delta P=0.2\times10^{10}\times0.0905$

$\Delta P=0.2\times10^{6}\ Pa$

$\Delta P=0.20 MPa$

Hence, The Pressure is 0.20 MPa.

6 0

4 years ago

What is a nonzero net force called

olasank [31]

Answer:

Equilibrium. • When an object is in equilibrium (either at rest or moving with constant velocity), the net force acting on it zero.

5 0

2 years ago

Read 2 more answers

Robert is riding the Giant Drop at Great America. If

lora16 [44]

Explanation:

i hope this helps, its not the same person but its the same equation.

7 0

3 years ago

A light with a second-order bright band forms a diffraction angle of 30.0°. The diffraction grating has 250.0 lines per mm. What

Simora [160]

I have no idea sorry

7 0

3 years ago

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A car with mass 1500 kg moves with constant velocity of 36 m/s. The driver sees a group of cows in front and he immediately step

Crazy boy [7]

From laws of motion:

$S = ( \frac{v + u}{2} ) \times t$
Where S is the distance/displacement (as you would call it) which is unknown
v = final velocity which is 0m/s (this is because the car stops)
u = initial velocity which is 36m/s (from the data given)
t = time taken for the distance to be covered and it is 6s

Substitute the values, hence:
$S = ( \frac{0 + 36}{2} ) \times 6$
$S = (18) \times 6 \\ \\ S = 108m$

But this is merely the distance he travelled in the 6 seconds he was trying to stop the car.

Therefore, the distance between the car and the cows = 160-108
Distance = 52m

6 0

3 years ago