Which of the following statements is true with regard to elastic and inelastic collisions

Answer:

15 meters/second

Explanation:

Answer:

v = 2,99913 10⁸ m / s

Explanation:

The velocity of propagation of a wave is

         v = λ f

in the case of an electromagnetic wave in a vacuum the speed that speed of light

         v = c

When the wave reaches a material medium, it is transmitted through a resonant type process, whereby the molecules of the medium vibrate at the same frequency as the wave, as the speed of the wave decreases the only way that they remain the relationship is that the donut length changes in the material medium

         λ = λ₀ / n

where n is the index of refraction of the material medium.

Therefore the expression is

           v = [tex]\frac{\lambda_o}{n} f[/tex]

Let's look for the frequency of blue light in a vacuum

           f =[tex]\frac{c }{\lambda_o}[/tex]  

           f = [tex]\frac{3 \ 10^8}{450 \ 10^{-9}}[/tex]

           f = 6.667 10¹⁴ Hz

the refractive index of air is tabulated

           n = 1,00029

let's calculate

           v = [tex]\frac{450 \ 10^{-9} }{1.00029} \ 6.667 \ 10^{14}[/tex]450 10-9 / 1,00029 6,667 1014

            v = 2,99913 10⁸ m / s

we can see that the decrease in speed is very small

Answer:

375J

Explanation:

W=F x d

=250 x 15

=375J

The work W is equal to the force f times the distance d, or W = fd, to mathematically describe this idea. If the force is applied at an angle to the displacement, the work is W = fd cos.

Work in physics is the energy that is transferred to or from an item when a force is applied along a displacement. In its simplest form, For a constant force that is oriented in the same direction as the motion, it is easiest expressed as the product of the force's magnitude and the distance travelled.

A desk is being subjected to applied force if someone is pushing it across the room. The person's force applied to the desk is known as the applied force.

Mass and weight are not the same.The normal force is the supporting force exerted on an object when it collides with another stable object.

Therefore, W=F × d =250 × 15 =375J

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Answer:

c

Explanation:

because newton's second law states that F= MA

which suggests that if M increases, F also increases which is the force,

let me give you a tip, during exam, just type any random numbers into the formula, like at first you type 5 into the M, then increase M, by putting 10 into the M , keep the acceleration the same for this, okay?

you will see that the force will increase,

by this I mean that option says largest mass, so the force will also be very big because in reality do you use more force on heavier box or a lighter one to push it across the room?

so larger mass, larger force, greater acceleration

but the question is not being clear, whether to the force remains constant for every object, if it does then A is false . and B is false because if the forces is constant, and it is light, it would require a small amount of force ,

but the other options, gave us a clue about the force so you can choose either c or d but see the explanation above,

the only corrext option will be c.

if not, please report this, someone will have a go at it

:) byeee

Answer:

a = 2.8 m/s2

Explanation:

a = Δv ÷ Δt

a = 28 ÷ 10

a = 2.8 m/s2

Answer:

True

Explanation:

Answer:

Because when something is moving  such as a car if your going too fast there could be a crash or collision.

Explanation:

Most helpful Answer~

There are no options~

Anyway If the ball is of bad quality it will get deflated/ or strike out.

' The must reasonable thing that could happen is that the ball will bounce'

*Smile* :)  

Answer:

Many volcanoes in the Ring of Fire were created through a process of subduction. And most of the planet's subduction zones happen to be located in the Ring of Fire. Subduction happens when tectonic plates shift, and one plate is shoved under another.

Explanation:

Answer:

a. Liquid state

b. At point R. The physical state of water at its boiling point temperature of 100 degree Celsius will be both liquid state as well as gaseous state.

c. at 110 degrees it is in gaseous state

Answer:

Explanation:

Electrolysis of dissolved ionic compounds

An electrolyte formed by dissolving an ionic compound contains: hydrogen ions from the water, and positive ions from the compound. hydroxide ions from the water, and negative ions from the compound.

the answer is 4

Answer:

Explanation:

Carry on learning

Answer:

acceleration = 0.013 m/s²

Explanation:

formula for acceleration is

a = (v-u) / t

a= (0.7-0.3) / 30

= 0.013

The acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

Acceleration is defined as the change in velocity of a body with respect to time. Mathematically:

[tex]a=\frac{v-u}{t}[/tex]

v is the final speed = 0.7m/s

u is the initial speed = 0.3m/s

t is the time taken = 30seconds

Substitute the given values into the formula:

[tex]a=\frac{0.7-0.3}{30}\\a=\frac{0.4}{30}\\a = 0.0133m/s^2[/tex]

Hence the acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

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the second and third one

Answer:

It is the length from the midpoint to the crest.

Explanation:

Answer:

The direction of these oscillations is the difference between longitudinal or transverse waves. In longitudinal waves, the vibrations are parallel to the direction of wave travel. In transverse waves, the vibrations are at right angles to the direction of wave travel.

Explanation:

The waves that contains the oscillations parallel to their direction of motion should be considered as the sound waves from stereo speaker.

A sound wave is the wave that shows the disturbance patterns that should be lead by the movement of the energy that should be travelled via the medium like air, water, since it should be propagated away from the sound source.

Therefore, The waves that contains the oscillations parallel to their direction of motion should be considered as the sound waves from stereo speaker.

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Answer:

the correct answer to your problem I believe would be B

Answer:

The average velocity is 7.5 km/h

Explanation:

Were Gonna convert minutes to hours

12 minutes = 12/60  hours = 0.2 hours

Now we estimate the average velocity of the distance traveled over this time

1.5 / 0.2 km/h = 7.5 km/h

Answer:

Yes your correct.

Explanation:

Answer:

hhmmmmmhmmmm hmhmmmm hmmm yeah i got nothing

Explanation:

Answer:

More carbon dioxide or greenhouse gases in the atmosphere can lead to global warming. Oceans store a large amount of heat, and increases in sea surface temperature can increases the amount of water vapor over the oceans, and that will increases the amount of greenhouse gases.

Answer:

the force between the two charges is 198.37 N

Explanation:

Given;

charge of the first particle, Q₁ = -3 x 10⁻⁵ C

charge of the second particle, Q₂ = 9.0 x 10⁻⁵ C

distance between the two charges, r = 0.35 m

The force between the two charges is calculated from Coulomb's law;

[tex]F = \frac{kQ_1Q_2}{r^2}[/tex]

where k is Coulomb's constant = 9 x 10⁹ Nm²/C²

[tex]F = \frac{(9\times 10^9)(3.0\times 10^{-5})(9\times10^{-5} )}{0.35^2} \\\\F = 198.37 \ N[/tex]

Therefore, the force between the two charges is 198.37 N

Answer: c

Explanation:

If the net force on the bowling ball is tripled, its new acceleration is 21 m/s². The correct option is d.

The force is the action of push or pull which can move or stop the object.

The initial force is F = mass x acceleration

F = 3.17515 kg x 7 m/s²

F = 22.23 N

When the net force is tripled, the new acceleration will b e

3 x F =m x a'

3 x 22.23 = 3.17515 x a'

a' = 21.003 m/s²

Thus, the new acceleration is 21 m/s². The correct option is d.

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Answer:

there is no momentum

Explanation:

Answer:

I'm not sure if you maybe forgot to add in some information but I can give you the equation you will need to solve this..! (just without the bit of infomration you might need)

[tex]2=4(\frac{1}{2})^{\frac{1100}{t}}[/tex]

In this case you'll be solving for t and I can help you with your first step, you'll divide 2 by 4, getting you to:

[tex]\frac{1}{2} =\frac{1}{2}^{\frac{1100}{t}[/tex]

Answer:

1 as 2g is half of 4g

Explanation: that means that the spear is closer to 6k years old

Answer:

15m/s

Explanation:

velocity = displacement/time

= (200+100)/20 = 300/20 = 15m/s

Explanation:

Newton's 2nd law of motion..option b