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bixtya [17]
3 years ago
13

Light rays bend as they pass from air into water at an angle (not 90 degrees). this is refraction. air water normal incident ray

refracted ray which quantity doesn't change when light refracts?
Physics
1 answer:
xxTIMURxx [149]3 years ago
7 0

When light ray pass from air into water, its speed and wavelength change only the frequency of the light doesn't change.

Light travels slower in a medium of higher refractive index. It bends because of this change in speed. The wavelength of light also changes in order to maintain the constant frequency.

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Determine the inductance L of a 0.65-m-long air-filled solenoid 3.2 cm in diameter containing 8400 loops.
den301095 [7]

Answer:

The inductance is  L  = 0.1097 \ H

Explanation:

From the question we are told that

  The  length is  l  =  0.65 \ m

   The  diameter is  d =  3.2 cm  = 0.032 \ m

    The  number of loops is  N  =  8400

Generally the radius is evaluated as

       r = \frac{ 0.032 }{2}  =  0.016 \ m

The  inductance is mathematically represented as

      L  =  \frac{ \mu_o  *  N^2  * A }{ l }

Here \mu_o is the permeability of free space with value  \mu_o   = 4\pi * 10^{-7} N/A^2

A is the cross-sectional area which is mathematically evaluated as

             A =  \pi  r^2

=>        A =  3.142 *  (0.016)^2

=>        A =  0.000804 \ m^2

 =>  L  =  \frac{   4\pi * 10^{-7} *  8400^2  * 0.000804  }{ 0.65 }

=>    L  = 0.1097 \ H

5 0
3 years ago
2. A train is traveling at 75 km/hour. How far can it travel in 20 hours?
zloy xaker [14]

Answer:

As the speed is constant

Distance = Speed x Time

45min = (45/60)hrs = 0.75hrs

Distance = 75 x 0.75 = 56.25km

Explanation:

5 0
2 years ago
Read 2 more answers
How many muscles do we have?
Umnica [9.8K]

Answer:

more than 600 muscles

Explanation:

there are more than 600 muscles in a human body

8 0
3 years ago
Which of the following is true about a rigid body in dynamic equilibrium? The body can have translational motion, but it cannot
mr_godi [17]

Answer:

The correct answer is "The rigid body can have rotational and transnational motion, as long as it's transnational and angular accelerations are equal to zero."

Explanation:

A rigid body by definition does not deform when forces act on it. In case of static equilibrium a rigid body cannot have any sort of motion while in case of dynamic equilibrium it can move but with constant velocities only thus having no acceleration weather transnational or angular.

5 0
3 years ago
The measured value of mass M in an experiment is M = 0.743 ± 0.005kg. The error in 2M is
omeli [17]

Given the measured value of mass M in the experiment the error in 2M is  ; dM

<u>Given data :</u>

Measured value of mass M = ( 0.743 ± 0.005 ) kg

<h3>The error in 2M in the measured value </h3>

The error in 2M in the measured value M = 0.743 ± 0.005 kg is dM while the error in M² will be 2dM

Hence we can conclude that the measured value of mass M in the experiment the error in 2M is  ; dM.

Learn more about error in 2M : brainly.com/question/6650225

8 0
2 years ago
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