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2 years ago

If an incident light ray hits a flat smooth object at 28 degrees, it will reflect off at an angle of…

1 answer:

Nookie1986 [14]2 years ago

5 0

Option B is correct. If an incident light ray hits a flat, smooth object at 28°. It will reflect off at an angle of 28°.

<h3>What is the law of reflection?</h3>

The law of reflection specifies that upon reflection from a downy surface, the slope of the reflected ray is similar to the slope of the incident ray.

The reflected ray is consistently in the plane determined by the incident ray and perpendicular to the surface at the point of reference of the incident ray.

When the light rays descend on the smooth surface, the angle of reflection is similar to the angle of incidence, also the incident ray, the reflected ray, and the normal to the surface all lie in a similar plane.

If an incident light ray hits a flat, smooth object at 28 degrees, it will reflect off at an angle of 28°.

Hence, option B is correct

To learn more about the law of reflection, refer to the link;

brainly.com/question/12029226

#SPJ1

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A boy throws a tell ball straight up . disregarding any effects of air resistance, the forces acting 9n the ball untill it retur

Drupady [299]

Well in my opinion I think that is called gravity but I’m no expert.

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3 years ago

A car travels at 12 m/s. The car then accelerates at 3 m/s2 until it reaches a speed of 18m/s.

Galina-37 [17]

Answer:

С. 30 m

Explanation:

Given the following data;

Initial velocity, U = 12m/s

Final velocity, V = 18m/s

Acceleration, a = 3m/s²

To find the distance, we would use the third equation of motion;

V ² = U² + 2aS

Substituting into the equation, we have

18² = 12² + 2*3*S

324 = 144 + 6S

6S = 324 - 144

6S = 180

S = 180/6

Distance, S = 30 meters.

3 0

3 years ago

“You can’t get more energy from a machine than the amount of energy you put into it,” is one way of stating the law of conservat

goldenfox [79]

Answer:

Energy

Explanation:

One ways of stating the law of conservation of energy is that "you cannot get more energy from a machine than the amount of energy you put into it".

The law of conservation of energy states that in a system, energy is neither created nor destroyed but transformed from one form to another.

The energy in a system does not increase based on the premise of this law.

The efficiency of a machine can reduce but the energy is always conserved.
This is because energy is transformed to other forms.

5 0

3 years ago

A skateboarder is moving at a constant speed of

Flauer [41]

The amount of time that passes from when this skateboarder begins to slow down until she begins to move back down the incline is 8.75 seconds.

<u>Given the following data:</u>

Speed = 1.75 m/s

Acceleration = -0.2 $m/s^2$

To calculate the amount of time that passes from when this skateboarder begins to slow down until she begins to move back down the incline, we would apply the first equation of motion;

<h3>The formula for the first equation of motion.</h3>

Mathematically, the first equation of motion for a decelerating object is given by this formula;

$V=U-at$

<u>Where:</u>

a is the acceleration.

V is the final speed.

U is the initial speed.

t is the time measured in seconds.

Substituting the given parameters into the formula, we have;

$1.75 = 0-(-0.2)t\\\\1.75=0.2t\\\\t=\frac{1.75}{0.2}$

Time, t = 8.75 seconds.

Read more on acceleration here: brainly.com/question/24728358

8 0

3 years ago

Potential energy of an apple is 6j. the apple is 3.00m high. what is the mass of the apple?

HACTEHA [7]

Answer:

0.2 kg

Explanation:

PE = mgh

6 J = m (9.8 m/s²) (3.00 m)

m = 0.2 kg

5 0

3 years ago