a Pontiac trans-am, initially at rest accelerates at a constant rate of 4.0 m/s squared for six seconds how fast will the car be traveling a T equals six seconds

Answers

Answer 1
Answer: use formula: a= Vf-Vi/t
rearrange: Vf=at
solve: Vf= 4.0m/s squared x 6s
          Vf = 24 m/s --> sigdigs
          Vf = 2.4 x 10^1 m/s


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An indicator of average kinetic energy is _____. pressure volume diffusion temperature

Answers

An indicator of average kinetic energy is temperature. Temperature is directly proportional to Kinetic energy of the molecules of an element.

Answer:

Temperature

Explanation:

The energy contained by a body due its motion is known as kinetic energy.From kinetic theory of gases, the average kinetic energy is proportional to temperature. More the temperature, more would be the speed of the particles. Gases having same temperature would have same average kinetic energy.

Thus, an indicator of average kinetic energy is temperature.

Assume that all four H-R diagrams below represent a star in different stages of its life, after it starts to fuse hydrogen in its core. Rank the HR diagrams based on when each stage occurs, from first to last.

Answers

Answer and explanation;

-The diagram at the left represents the Sun (or any other one-solar-mass star) as a hydrogen-burning main-sequence star, with spectral type G and one solar luminosity. The next diagram shows the Sun after it has exhausted its core hydrogen and left the main sequence, making it a sub-giant with energy generated by hydrogen burning in a shell around an inert helium core.

-The third diagram shows the Sun a little later; its energy source is still hydrogen shell burning, but at this point it has expanded in size so much that it is a red giant. The final diagram (far right) shows the white dwarf corpse of a one-solar-mass star; it is hot because it is the exposed core of the dead star, but dim because it is small in size.

The right answer for the question that is being asked and shown above is that: "1-4-3-2." (main sequence-->red giant-->supergiant-->white dwarf). Assume that all four H-R diagrams below represent a star in different stages of its life, after it starts to fuse hydrogen in its core.


A 4 watt night light is left on for 8 hours each night how much work does it do per night

Answers


1 watt = 1 joule per second

             (4 joules/second) x (3600 second/hour) x (8 hour)

         =  (4 x 3600 x 8) (joule)

         =      115,200 joules .

Which phenomena did Michael Faraday explore to help him invent the motor and the generator?motion and magnetism

motion and light

electricity and motion

electricity and magnetism

Answers

To Build The Motor, Faraday Studied Electricity And Magnetism. Hope This helps!
For Invention of "Motor" and "Generator", Micheal Faraday did explore electricity and magnetism, he postulated his three laws of "Electromagnetic Induction" and two laws of "Electro-chemistry".

In short, Option D) Electricity and Magnetism would be your answer.

Hope this helps!

What are three examples of circular motion?

Answers

Motion of fan, stone tied to a string and is being swung in circles and motion of electrons around nucleus.

A car that is initially moving to the right with a velocity of 4 m/s is pushed by a -5 N force as it moves from 5 meters to 20 meters. How much work is done to the car by this force?

Answers

Answer:

the work done on the car by the applied force is 75 J.

Explanation:

Given;

initial velocity of the car, v = 4 m/s

applied force in opposite direction, F = 5N

initial position of the car, x₀ = 5 m

final position of the car, x₁ = 20 m

displacement of the car, Δx = x₁ - x₀ = 20 m - 5m

                                                            = 15 m

The work done on the car by the applied force is calculated as follows;

W = F.Δx

W = 5 x 15

W = 75 J

Therefore, the work done on the car by the applied force is 75 J.