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3 years ago

How would you describe the motion of all three vehicles?

1 answer:

3 0

Answer:In physics, motion is defined as a change in the position of a body with respect to a reference point. ... Think about the motion of three cars: one in the fast-moving carpool lane, another in the middle lane, and the third in the slow lane used to enter or exit the freeway.

Explanation:

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Which statement best describes Cleo's mistake? Light travels through air and water in angled, scattered paths. Light does not ch

pashok25 [27]

<u>The question</u> (obtained from the internet);

Cleo stated that light travels through air in straight paths, and when it moves from air to water, light changes direction, speeds up, and bends towards the normal

Answer:

The statement that best describes Cleo's mistake is;

Light slows down when it moves from air into water

Explanation:

The question;

Cleo stated that light travels through air in straight paths, and when it moves from air to water, light changes direction, speeds up, and bends towards the normal

The speed of light in water = 225,000 km/s

The speed of light in air = 299,702,547 m/s

The speed of light in vacuum = 299,792,458 m/s

Therefore, light slows down when it moves from a less dense medium to a denser medium

Light moves closer (bends) towards the normal when it moves from air into water. Light therefore, changes direction, and light moves in straight path which is known as rectilinear motion

Therefore, the statement that describes Cleo's mistake is that light actually slows down when it moves from air into water.

5 0

3 years ago

A bullet of mass m, moving horizontally with speed u, meets a block of wood of mass M, travelling along the same line but in the

natulia [17]

Answer:

Explanation:

First of all we shall calculate the velocity of composite mass . Let it be v . Applying law of conservation of momentum

mu - MU = ( m + M ) v

v = mu - MU / ( m + M )

loss of kinetic energy

= 1/ 2 mu² + 1/2 MU² - 1/2 ( M +m ) v²

= 1/ 2 mu² + 1/2 MU² - 1/2 ( M +m ) (mu - MU)² / ( m + M )²

= 1/ 2 mu² + 1/2 MU² - 1/2 (mu - MU)² / ( m + M )

= 1/2 [ m²u² + mMu² +mMU² + m²U² - m²u² - M²U² - 2 muMU ] / ( m + M )

= 1 / 2 [ mMu² + mMU² - 2 muMU ] / ( m + M )

= 1 / 2mM [ (u² + U² - 2 uU) / ( m + M )]

= 1/2 mM x k

where

k = [ (u² + U² - 2 uU) / ( m + M )]

Given

m = .004 kg

M = 4 kg

u = 890 ms⁻¹

U = 7 ms⁻¹

k = ( 890² + 7² - 2 x 890 x 7 ) / 4.004

= ( 792100 + 49 - 12460 ) / 4.004

= 194727.52

loss of kinetic energy

= 1/2 mM x k

= .5 x .004 x 4 x 194727.52

= 1557.82 J .

3 0

3 years ago

In the diagram, the center dot represents the car, and the arrows represent the forces acting on the car Which term describes th

BartSMP [9]

The answer is D hope its right

3 0

3 years ago

Read 2 more answers

Sodium undergoes beta decay and becomes magnesium, write an equation. please help...

Tatiana [17]

Remark

There are 2 kinds of Beta Decay. This one is an example of a neutron becomes a proton and the emitted particle is an electron.

$_{11}^{23}\text{Na}\longrightarrow_{12}^{23}\text{Mg}+_{-1}^{ 0}\text{1e-}$

6 0

3 years ago

What limitations exist when attempting to<br> categorize hair by race?

almond37 [142]

Answer:

Albino possibilities

Explanation:

6 0

3 years ago

How would you describe the motion of all three vehicles?​

How would you describe the motion of all three vehicles?