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3 years ago

When waves enter a denser medium, they bend the normal. A) Toward B) Away From

Physics

2 answers:

Andreyy893 years ago

7 0

The answer is bend towards normal.

Licemer1 [7]3 years ago

7 0

Answer:

Option (A)

Explanation:

When a ray of light passes through one optical medium to another optical medium it deviates from its path. This phenomenon is called refraction.

The speed of light in different medium is different.

As light ray travel from rarer medium to denser medium the speed of light decreases.

Thus, it have to cover minimum path length and hence moves towards the normal.

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An underwater mountain system formed by diverging oceanic plates is______

Ilia_Sergeevich [38]

Answer:

Mid-Ocean Ridges

Explanation:

The mid-ocean ridges is an underwater mountain system formed by diverging oceanic plates.

This mid - ocean ridge is one of the prominent land mass on the earth surface.
At a diverging center, two tectonic plates are pulling apart from one another.
This creates a space which allows for magma to rise up.
The magma then crystallize to form an extensive ridge network known as the mid - oceanic ridge.
The continental expression of the ridge can only be found in Iceland

3 0

3 years ago

Consider that 168.0 J of work is done on a system and 305.6 J of heat is extracted from the system. In the sense of the first la

Ilia_Sergeevich [38]

To solve this problem we must resort to the Work Theorem, internal energy and Heat transfer. Summarized in the first law of thermodynamics.

$dQ = dU + dW$

Where,

Q = Heat

U = Internal Energy

By reference system and nomenclature we know that the work done ON the system is taken negative and the heat extracted is also considered negative, therefore

$W = -168J \righarrow$ Work is done ON the system

$Q = -305.6J \rightarrow$ Heat is extracted FROM the system

Therefore the value of the Work done on the system is -158.0J

3 0

3 years ago

¿Cuál es la masa aproximada del aire en una habitación de 5.6 m * 3.8 m * 2.8 m?

Nady [450]

It would be 3.15 in meters

8 0

3 years ago

Two students are watching a person riding a skateboard up and down a ramp. Each student shares what they think about the energy

avanturin [10]

Answer:

Explanation:

We know that , If the frictional force on a system is zero , then the total energy of a system will be conserved.

By using energy conservation

KE₁ + U₁ = KE₂ + U₂

KE₁=Kinetic energy at location 1

U₁ =Potential energy at location 1

KE₂=Kinetic energy at location 2

U₂=Potential energy at location 2

Therefore, Raymond is thinking in a right way.

7 0

3 years ago

Kelli weighs 425 N, and she is sitting on a playground swing that hangs 0.36 m above the ground. Her mom pulls the swing back an

kodGreya [7K]

Answer:

V = 3.54 m/s

Explanation:

Using the conservation of energy:

$E_i = E_f$

so:

$wh = \frac{1}{2}mV^2$

where w is te weigh of kelly, h the distance that kelly decends, m is the mass of kelly and V the velocity in the lowest position.

So, the mass of kelly is:

m = 425N/9.8 = 43.36 Kg

and h is:

h = 1m-0.36m =0.64m

then, replacing values, we get:

$(425N)(0.64m) = \frac{1}{2}(43.36kg)v^2$

Solving for v:

V = 3.54 m/s

7 0

3 years ago