Can anyone please explain the solution to this problem?

Apply thrid equation of kinematics

[tex]\\ \tt\longmapsto v^2=u^2+2as[/tex]

[tex]\\ \tt\longmapsto v^2=2(5)(1000)[/tex]

[tex]\\ \tt\longmapsto v^2=10000[/tex]

[tex]\\ \tt\longmapsto v=100m/s[/tex]

Answer:

Depends

Explanation:

If you understand the content rush through questions. If you dont understand learn the key concepts of all the chapters then on the commute tomorrow test your self on the concepts. Good luck!

Answer:

wave interference

Explanation:

Wave interference is the phenomenon that occurs when two waves meet while traveling along with the same medium. The interference of waves causes the medium to take on a shape that results from the net effect of the two individual waves upon the particles of the medium. To begin our exploration of wave interference, consider two pulses of the same amplitude traveling in different directions along with the same medium.

Different liquids have different rates of expansion. I think we can fairly say that (most) substances expand when heating because they vibrate more, because they have more kinetic energy, so there's a pushing force between molecules. For almost the same reason, gasses expand.The change in volume us independent of the original mass but depends on original volume.

A mercury thermometer is based on the application of thermal expansion of liquids. The bulb of the thermometer is kept in contact with a hot body, and mercury expands and level of mercury rises in the tube

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The protostar's surface area was 1.1  times greater.

The surface of the star can be assumed be circular and the surface area can determined as follows;

Area = πr²

[tex]Area = \frac{\pi d^2}{4} \\\\Area = \frac{(100d)^2}{(95d)^2} \\\\[/tex]

Surface area = 1.1 times greater

Thus, the protostar's surface area was 1.1  times greater.

Learn more about protostars here:  https://brainly.com/question/891408

Answer:

In order to minimize the potential energy, they repel each other (in the case of a positive and negative charge, potential energy is minimized by bringing them together, so they attract).

Explanation:

Hope it helps

Two electrons repel when they interact, because they both have similar negative electric charge.

When the two charges or the charged bodies interact each other, the force of attraction or repulsion acts between them. This force of attraction or repulsion can be find out using the coulombs law.

According to the Coulombs law, the force of attraction of repulsion between charged two bodies is directly proportional to the product of charges of them and inversely proportional to the square of distance between them. It can be given as,

[tex]F=k\dfrac{q_1q_2}{r^2}[/tex]

Here, (k) is the coulombs constant,  (q1 and q2) is the charges of two bodies and (r) is the distance between the two charges.

This force of attraction or repulsion is identified by the sign of the particular charge. According to the property of interacting charges-

As the electrons are negatively charges. Therefore, two electrons repel when they interact, because they both have similar negative electric charge.

earn more about the property of interacting charges here;

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I have done before and the answer is c

Answer:

v= 4.8 m/s

Explanation:

m= 2.0

KE= 1/2 mv^2

v= ?

v= 1/2 (2.0)^2

v= 4.8 m/s

Difference in height = 10 - 5 = 5 meters

Kinetic energy = Energy ( 500 N) x height (5 m) = 2,500 N/m  = 2,500 joules

Answer: 2,500 joules

Answer:

275

Explanation:425- 150 =275mlml=gm

Given :-

To Find :-

Solution :-

See attachment .

Firstly break the velocity of A , into it's vertical components . That will be ,

[tex] v_A = v_A cos60^o + v_A sin60^o [/tex]

Now the component , [tex]v_A cos60^o [/tex] coincides on side AC and is directed from A to C . Along CA, the velocity of particle C is directed . So both are in opposite directions.

So , the relative velocity of C with respect to A will be ,

[tex] v_{CA}= v_C - v_A [/tex]

Substitute ,

[tex] v_{CA}= v - ( - v cos 60^o) [/tex]

Value of cos 60° is 1/2 ,

[tex] v_{CA}= v + v\bigg(\dfrac{1}{2}\bigg)=v +\dfrac{v}{2}[/tex]

Add the terms,

[tex] v_{CA}= \dfrac{2v + v}{2}=\dfrac{3v}{2}[/tex]

Hence , now we can find the time taken by A and C ,to meet each other will be ,

[tex]s = v t [/tex]

Substitute ,

[tex]d = \dfrac{3v}{2} t [/tex]

Multiplying both sides by 2 ,

[tex] 2d = 3vt [/tex]

Dividing both sides by 3v ,

[tex] t = \dfrac{2d}{3v} [/tex]

Similarly , taking any two particles you will get the same time .

Hence the particles meet after 2d/3v time .

I hope this helps .

Answer:

  never

Explanation:

Particles moving on paths that don't meet at a point will be particles that never meet. Even if the paths meet at a point, which these don't, the particles may not meet if they arrive at different times.

__

Consider the diagrams in the attachments. In order, they show the positions of the particles shortly after takeoff, midway along the line, and after they have gone farther than the length of the line. The point of closest approach is shown in the second attachment, when the particles are halfway along the line.

Consider particles A and C. Their north/south direction is 'north' for each of them. They both have the same velocity in the 'north' direction, but have started at different points, so can never meet. Those two particles have opposite velocities in the east/west direction, so can pass each other (which they do in the second attachment), but cannot meet.

Answer:

1 Unit Electricity is the amount of electrical energy consumed by a load of 1 kW power rating in 1 hour..

Explanation:

Answer:

upthrust or BUOYANT FORCE =Vdg

volume=LWH

upthrust=(4cm×5cm×2cm)×1g/cm²×g

upthrust=40cm³×1g/cm³×g

upthrust=40gf or 0.04kg×10m/s²=0.4N

weight of the displaced liquid is upthrust.

so mass=40g or 0.04kg

upthrust=40gf or 0.4Nand mass of the displaced liquid=40g or 0.04kg

please mark brainliest, hope it helped

Answer:

C is the correct answer of this question.

Social cognitive theory centers around: A. learning.

Cognitive development can be defined as the development of thought processes, learning skills, knowledge and problem-solving abilities in living organisms such as humans, especially from infancy through adulthood.

Social cognitive theory refers to a theoretical perspective which states that human behavior is typically learned and developed based on interactions with other people and the natural world.

In conclusion, social cognitive theory centers around learning.

Read more on social cognitive theory here: https://brainly.com/question/8893006

Answer:

hope that helps

Explanation:

Where does energy go once used? Nothing happens to the energy

Answer:

Both balls have the same downward acceleration (and speed)

Answer:

14m/s2

Explanation:

initial velocity=2m/s

final velocity =?

time=4s

acceleration=3.0m/s

v=u+at

v=(2)+(3*4)

v=14m/s

by substituting the values in the equation we get the value 14m/s.

I think its D answer

sorry I dont have explanation but I think its D

Answer:

the world will become different

Answer:

Plane (or) regular surface

Explanation:

A smooth surface is also called as plane surface. (It is like a mirror)

Answer:

Hamid

Explanation:

I got it right on my test

Answer:

imaginary audience

Explanation:

makes adolescence more self-conscious

Answer:

Copper

Explanation:

Copper, its ne of the most used materials because of their ability to be the best conductors. Other materials that are sometimes used as conductors are silver, gold, and aluminum.

Answer:

Speed = 24 m/s.

No! It doesn't break the speed limit.

Explanation:

The formula we'll be using to find the car's speed:

[tex] \boxed{ \mathsf{speed = \frac{distance}{time} }}[/tex]

The detectors are placed 1.2 m apart.

==> Distance the car travels = 1.2 m

The car, it says, takes 0.050 s to travel that distance.

==> Time taken by the car to travel 1.2 m = 0.050 s

Using the formula mentioned above, let's calculate the speed of the car:

[tex] \sf{speed = \frac{distance}{time} }[/tex]

[tex] \implies \sf{speed = \frac{1.2}{0.050} }[/tex]

On dividing 12 by 0.050 we obtain 24.

[tex] \implies \sf{speed = 24 \: m/s }[/tex]

Any car traveling with a speed that is greater than or equal to 25 m/s is breaking the speed limit.

And since the car in our focus is traveling at 24 m/s that is less than 25 m/s, it doesn't break the speed limit.

By using the orbital period equation we will find that the orbital radius is r = 4.29*10^11 m

This would be the time that a given body does a complete revolution in its orbit.

It can be written as:

[tex]T = \sqrt{\frac{4*\pi ^2*r^3}{G*M} }[/tex]

Where:

Rewriting the equation for the radius we get:

[tex]T = \sqrt{\frac{4*\pi ^2*r^3}{G*M} }\\\\r = \sqrt[3]{ \frac{T^2*G*M}{4*\pi ^2} }[/tex]

Where T = 7.5 years = 7.5*(3.154*10^7 s) = 2.3655*10^8 s

Replacing the values in the equation we get:

[tex]r = \sqrt[3]{ \frac{(2.3655*10^8 s)^2*(6.67*10^{-11} m^3/(kg*s^2))*(1.989*10^{30} kg)}{4*3.14 ^2} } = 4.29*10^{11 }m[/tex]

So the orbital radius is 4.29*10^11 m

If you want to learn more about orbits, you can read:

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Answer: u excited for the super bowl?

Explanation: