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Dmitrij [34]
4 years ago
9

Which statement is true about light when it slows down upon entering another medium? A. Light bends less, and there is greater r

efraction B. Light bends more, and there is greater refraction C. Light bends more, and there is less refraction D. Light bends less, and there is less refraction. HELP FAST PLEASE :( so stressed lol
Physics
2 answers:
Anvisha [2.4K]4 years ago
8 0
The index of refraction is the ratio of the speed of light in a vacuum to the speed of light in the material it is passing through.

So the answer would be: Light bends more, and there is greater refraction.
Fofino [41]4 years ago
5 0

Answer: B. Light bends more, and there is greater refraction.

Explanation:

Refraction is the bending of light when it moves from one medium into another. When light moves from a rarer medium to a denser medium from example from air to glass,  it travels slowly in glass and this leads to the bending of light towards the normal.

When light travels from a denser to a rarer medium for example from glass to air, the light travels faster and now bends away from the normal.

The normal is a line perpendicular to the boundary between the two substances.

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Electromagnetic waves are transverse waves. They consist of traveling electric and magnetic fields which oscillate periodically.
masha68 [24]

Answer:

The answer is D.) 90

Explanation:

the electromagnetic wave is a transverse wave. the electric field makes an angle of 90° with the magnetic field. both these fields, in turn, make an angle of 90° with the direction of movement of the wave.

7 0
3 years ago
Two pistons of a hydraulic lift have radii of 2. 67 cm and 20. 0 cm, respectively. The downward force on the 2. 67-cm piston tha
Makovka662 [10]

The downward force on the 2. 67-cm piston that is required to lift a mass of 2000 kg supported by the 20-cm piston is 350 N.

<h3>What is pascal law?</h3>

Pressure applied to a closed system of fluid will be transfer at each point of the fluid and the boundaries of the system.

Let suppose at the two point of such system the input force apllied is F₁ and output force we get is F₂. The area of this points is A₁ and A₂ respectively. As the pressure at both point is same. Then by the pascal law,

\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}\\

In case of radius,

\dfrac{F_1}{\pi r_1^2}=\dfrac{F_2}{\pi r_2^2}\\\\\dfrac{F_1}{r_1^2}=\dfrac{F_2}{ r_2^2}

Two pistons of a hydraulic lift have radii of 2. 67 cm and 20. 0 cm, respectively. Thus,

r_1=2.67\rm\; cm

r_2=20.0\rm\; cm

The downward force on the 2. 67-cm piston that is required to lift a mass of 2000 kg supported by the 20-cm piston is The force applied on second piston is,

F_2=mg\\F_2=2000\times9.81\\F_2=19620 \rm\; N

Put the values in the above formula,

\dfrac{F_1}{2.67^2}=\dfrac{19620}{20^2}\\F_1=\dfrac{19620\times2.67^2}{20^2}\\F_1\approx 350\rm\; N

Thus, the downward force on the 2. 67-cm piston that is required to lift a mass of 2000 kg supported by the 20-cm piston is 350 N.

Learn more about the pascal law here;

brainly.com/question/4262025

#SPJ4

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2 years ago
When an object is at rest, it might have several forces acting on it. however,?
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For the object to be moving, there must be a value for the forces acting on this object in a certain direction to cause the object to move.

On the other hand, when an object is at rest, despite the possibility of having several forces acting on it, these forces balance out to a net force of zero which keeps the body still with no motion.
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3 years ago
Instead of rolling down the ramp over the step, imagine the ball falls off the back of the ramp directly to the ground. What is
lesya692 [45]

0J

According to the law of conservation of energy, the potential energy is converted to kinetic energy. Remember, potential energy is calculated using height and weight. If the ball is on the ground, height is 0.

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3 years ago
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An impact which stops a moving object must do enough work to take away its kinetic energy, so extending the distance moved during the collision reduces the impact force.
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