Can someone help me answer this question. What happened when the sun cooled down

You are traveling along a freeway at 65 mi/h. You suddenly skid to a stop because of congestion in traffic. Where is the energy

sergey [27]

The work and energy theorem allows finding the result for where the kinetic energy of the car is before stopping is:

The energy becomes:

An important part in work on discs.

A part in non-conservative work due to friction.

Work is defined by the scalar product of force and displacement.

W = F . d

Where the bold indicate vectors, W is work, F is force and d is displacement.

The work energy theorem relates work and kinetic energy.

W = ΔK = $K_f - K_o$

In this case the vehicle stops therefore its final kinetic energy is zero, consequently the work is:

W = - K₀

Therefore, the initial kinetic energy that the car has is converted into work in its brakes. In reality, if assuming that there is friction, an important part is transformed into non-conservative work of the friction force, this work can be seen in a significant increase in the temperature of the discs on which the work is carried out.

In conclusion, using the work-energy theorem we can find the result for where the kinetic energy of the car is before stopping is:

The energy becomes:

An important part in work on the discs.

A part in non-conservative work due to friction.

Learn more here: brainly.com/question/17056946

8 0

3 years ago

What is the processes called when matter, that is a liquid, transforms into a solid?

AURORKA [14]

Oh yeah I just got cheated lol lol lol lol

4 0

3 years ago

Two trains on separate tracks move toward each other. Train 1 has a speed of 145 km/h; train 2, a speed of 72.0 km/h. Train 2 bl

tekilochka [14]

Answer:

Therefore,

The frequency heard by the engineer on train 1

$f_{o}=603\ Hz$

Explanation:

Given:

Two trains on separate tracks move toward each other

For Train 1 Velocity of the observer,

$v_{o}=145\ km/h=145\times \dfrac{1000}{3600}=40.28\ m/s$

For Train 2 Velocity of the Source,

$v_{s}=90\ km/h=90\times \dfrac{1000}{3600}=25\ m/s$

Frequency of Source,

$f_{s}=500\ Hz$

To Find:

Frequency of Observer,

$f_{o}=?$ (frequency heard by the engineer on train 1)

Solution:

Here we can use the Doppler effect equation to calculate both the velocity of the source $v_{s}$ and observer $v_{o}$ , the original frequency of the sound waves $f_{s}$ and the observed frequency of the sound waves $f_{o}$ ,

The Equation is

$f_{o}=f_{s}(\dfrac{v+v_{o}}{v -v_{s}})$

Where,

v = velocity of sound in air = 343 m/s

Substituting the values we get

$f_{o}=500(\dfrac{343+40.28}{343 -25})=500\times 1.205=602.64\approx 603\ Hz$

Therefore,

The frequency heard by the engineer on train 1

$f_{o}=603\ Hz$

7 0

3 years ago

This person is fishing in a small, freshwater body of water. This body of water flows into a larger body of water called a river

ANEK [815]

Since the small body of water is connected to a larger body of water. so the small body of water will than be called a stream

6 0

4 years ago

Each gene controls the production of one or more specific ( Blank).

konstantin123 [22]

Answer:

Genes are located in the CHROMOSOME

Explanation:

Genes are contained in chromosomes, which are in the cell nucleus. A chromosome contains hundreds to thousands of genes. Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes. A trait is any gene-determined characteristic and is often determined by more than one gene.

7 0

3 years ago