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s2008m [1.1K]
3 years ago
13

Light refracts when it passes through some objects. What is refraction?

Physics
1 answer:
blagie [28]3 years ago
6 0

Answer:

Explanation:

in physics, the change in direction of a wave passing from one medium to another caused by its change in speed. For example, waves in deep water travel faster than in shallow.from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction in other words it can be all of them or i can narrow it down some more it can have a change in dirction when light enters into a traveling point for example after moving through air it passes through a prism called  compare reflection

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A light string is wrapped around the edge of the smaller disk, and a 1.50-kg block, suspended from the free end of the string. i
Naily [24]

Answer:

Explanation:

Height of the block before the release "h" = 1.99 kg

mass of the block  "m"  = 1.5 kg

potential energy of the block = m g h

= 1.5 x 9.8 x 1.99

= 29.253 J

If v be its velocity before striking the floor

kinetic energy of block = 1/2 m v²

Applying conservation of mechanical energy

kinetic energy = potential energy

1/2 m v² = 29.253

.5 x 1.5 x v² = 29.253

v² = 39

v = 6.24 m /s

5 0
3 years ago
Read 2 more answers
The first and second coils have the same length, and the third and fourth coils have the same length. They differ only in the cr
stealth61 [152]

Answer:

\frac{R_2}{R_1}=\frac{A_1}{A_2}\\\frac{R_4}{R_3}=\frac{A_3}{A_4}

Explanation:

The resistance of a conductor is directly proportional to its length and is inversely proportional to its cross-sectional area, this dependence is given by:

R=\frac{\rho L}{A}

\rho is the material's resistance, L is the legth and A is the cross-sectional area.

For the first and second coils, we have:

R_1=\frac{\rho L}{A_1}\\R_2=\frac{\rho L}{A_2}\\\rho L=R_1A_1\\\rho L=R_2A_2\\R_1A_1=R_2A_2\\\frac{R_2}{R_1}=\frac{A_1}{A_2}

For the third and fourth coils, we have:

R_3=\frac{\rho L'}{A_3}\\R_4=\frac{\rho L'}{A_4}\\\rho L'=R_3A_3\\\rho L'=R_4A_4\\R_3A_3=R_4A_4\\\frac{R_4}{R_3}=\frac{A_3}{A_4}

6 0
4 years ago
A horizontal force F is used to pull a 5 kg block across a floor at constant speed of 3 m/s. The frictional force between the bl
horrorfan [7]

Answer:

5× 3 over 10 = 1.5

Explanation:

F = 1m/s × kg over n

7 0
3 years ago
The radar system of a navy cruiser transmits at a wavelength of 1.4 cm, from a circular antenna with a diameter of 2.7 m. At a r
Goshia [24]

Answer:

Distance will be 49.34 m

Explanation:

We have given wavelength \lambda =1.4cm =0.014m

Diameter of the antenna d = 2.7 m

Range L = 7.8 km = 7800 m

We have to find the smallest distance hat two speedboats can be from each other and still be resolved as two separate objects D

We know that distance is given by D=\frac{L1.22\lambda }{d}=\frac{7800\times 1.22\times 0.014}{2.7}=49.3422m

So distance D will be 49.34 m

4 0
3 years ago
What energy comes from a rining bell
Harrizon [31]

Answer: Sound Energy

Sound Energy

Explanation:The vibrations produced by the ringing bell causes waves of pressure that travel or propagate through the medium that is air. Sound energy is a form of mechanical energy that is generally associated with the motion and position of the ringing bell.

7 0
3 years ago
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