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3 years ago

Can you please help me?

Physics

2 answers:

Anika [276]3 years ago

5 0

Answer:

<h3>Law of reflection</h3>

Explanation:

According to the laws of reflection,

Incident ray, reflected ray and normal lie on the same plane.

Angle of reflection and angle of incidence are always equal.

→ Angle of reflection : Angle of which light rays reflect off surface.

→ Angle of incidence : Angle at which light rays strikes the surface.

insens350 [35]3 years ago

3 0

Answer: reflection

Explanation:

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MArishka [77]

This is a uniform rectilinear motion (MRU) exercise.

To start solving this exercise, we obtain the following data:

v = 4.6 m/s
d = ¿?
t = 10 sec

To calculate distance, speed is multiplied by time.

We apply the following formula: d = v * t.

We substitute the data in the formula: the <u>speed is equal to 4.6 m/s,</u> the <u>time is equal to 10 s</u>, which is left as follows:

$\bf{d=4.6\dfrac{m}{\not{s}}*10\not{s} }$

$\bf{d=46 \ m}$

Therefore, the speed at 10 seconds is 46 meters.

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2 years ago

A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.77

Vikki [24]

The formula for the rotational kinetic energy is

$KE_{rot} = \frac{1}{2}(number \ of\ propellers)( I)( omega)^{2}$

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aliya0001 [1]

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Explanation:

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$\Delta E_k = W$

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$W=\int F(x) dx$

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