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inna [77]
3 years ago
8

If it takes 10 seconds for a car to reach its top speed of 100 miles per hour, its acceleration would be. Help please

Physics
1 answer:
hjlf3 years ago
4 0

Answer:

36000 miles/h^{2} or 0.0028 miles/s^{2}

Explanation:

Acceleration is rate of change of speed per unit time. The change in speed is given by deducting the initial speed from final speed. Assuming that the car starts from rest to a top speed of 100 miles per hour, then the change in speed is equivalent to 100-0=100 miles per hour.

Time is given in seconds and converting to hours will be 10/3600

The acceleration will then be

\frac {100*3600}{10}=36000 miles/h^{2}

Alternatively, the change in speed xould be converted to miles per second hence 100/3600 miles per second divided by 10 s then a=\frac {100}{36000}=0.0027777777777 m/s^{2} rounded off as 0.0028 miles/s^{2}

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Answer:

75°C

Explanation:

175−25/225−25=x−0/100−0

150/200=x/100

x=150×100/200

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Match each form of Energy with it's definition. Energy of motion Question 7 options: mechanical energy kinetic energy chemical e
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Answer:

a fireplace or burn gasoline in a car's engine.

Mechanical energy is energy stored in objects by tension. Compressed springs and stretched rubber bands are examples of stored mechanical energy.

Nuclear energy is energy stored in the nucleus of an atom—the energy that holds the nucleus together. Large amounts of energy can be released when the nuclei are combined or split apart.

Gravitational energy is energy stored in an object's height. The higher and heavier the object, the more gravitational energy is stored. When a person rides a bicycle down a steep hill and picks up speed, the gravitational energy is converting to motion energy. Hydropower is another example of gravitational energy, where gravity forces water down through a hydroelectric turbine to produce electricity.

Kinetic energy

Kinetic energy is the motion of waves, electrons, atoms, molecules, substances, and objects.

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7 0
2 years ago
A soap bubble usually pops because some part of it becomes too thin due to evaporation or drainage of fluid. The change in thick
Lapatulllka [165]

Answer:

To understand why the change in thickness also changes the color of light the bubble reflects, we definitely know that

mλ = dsinθ

when d sin θ = mλ, we expect constructive interference

d = distance between the slits

θ = the angle relative to the incident direction

m = order of the interference

Hence, a change in the thickness will also cause a change in the wavelength, and as wavelength changes, various colors are generated.

The light's path difference is therefore generated as a result of the thickness variation of the soap bubble.

Explanation:

To understand why the change in thickness also changes the color of light the bubble reflects, we definitely know that

mλ = dsinθ

when d sin θ = mλ, we expect constructive interference

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Hence, a change in the thickness will also cause a change in the wavelength, and as wavelength changes, various colors are generated.

The light's path difference is therefore generated as a result of the thickness variation of the soap bubble.

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2 years ago
The freezer compartment in a conventional refrigerator can be modeled as a rectangular cavity 0.3 m high and 0.25 m wide with a
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Answer:

Thickness of Styrofoam insulation is 0.02741 m.

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Height = 0.25 m

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Power = 400 W

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Using formula of area

A=2(lb+bh+hl)

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L=\dfrac{kA}{q}(T_{o}-T_{i})

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