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Charra [1.4K]
3 years ago
6

Give one example in which both physical and chemical changes takes places ​

Physics
2 answers:
Anna71 [15]3 years ago
7 0

<em>A burning candle</em> is a great example.

First the wax melts (physical change).

Then when the melted wax is hot enough, it combines with oxygen in the air, forms carbon monoxide and carbon dioxide, and drifts away as hot gases (chemical change).  

daser333 [38]3 years ago
4 0

Answer:

during respiration physical and chemical change both are occuring

Explanation:

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What is the advantage of D-step tuning on 2020 Pathfinder’s Xtronic CVT at cruising speed?
scoundrel [369]

Explanation:

The transmission stimulates  shifts at higher rotation per minutes and providing stepped acceleration at with linear acceleration feel.

D-Step Logic Control is found in other Nissan CVT equipped models such as 2020 Altima, 2020 Pathfinder, 2020 Murano and the sporty 2020 Maxima.

5 0
2 years ago
A baseball goes from zero to 34 m/s in 0.188 s. What is its average acceleration? Answer in units of m/s^2
Kaylis [27]

Answer:

a_{avg} = 180.85 m/s^{2}

Given:

Initial velocity, u = 0 m/s

Final velocity, v = 34 m/s

Time interval, \Delta t = 0.188 s

Solution:

Acceleration is the rate at which the velocity of an object changes.

Thus

Average acceleration, a_{avg} = \frac{\Delta v}{\Delta t}

a_{avg} = \frac{v - u}{t - 0} = \frac{34 - 0}{0.188} = 180.85 m/s^{2}

6 0
2 years ago
As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minim
professor190 [17]

Answer:

rmax/rmin = √1.127

Explanation:

F = GmM / r²

As the masses can be assumed to be constant, the force between the two is proportional to the inverse of the square of the distance between them

(Fmax - Fmin) / Fmin = 0.127

           (Fmax - Fmin) = 0.127Fmin

       1/rmin² - 1/rmax² = 0.127(1/rmax²)

                      1/rmin² = 0.127(1/rmax²) + 1/rmax²

                      1/rmin² = 1.127(1/rmax²)

              rmax²/rmin² = 1.127

                 rmax/rmin = √1.127 ≈ 1.06160256...

8 0
3 years ago
Find the wavelength of light given off by a hydrogen atom when its electron drops from the n = 4 to n = 1 energy level
4vir4ik [10]

Answer: 1.55 x 10 -19J on top

Explanation:

4 0
2 years ago
What pressure is exerted on the bottom of a 0.500-m-wide by 0.900-m-long water tank that can hold 50.0 kg of water by the weight
svetoff [14.1K]

Answer:

1088.9N/m2

Explanation:

Calculation for What pressure is exerted

First step is to find the area of bottom of the tank using formula

Area=Width*breadth

Let plug in the formula

Area=0.5*0.9

Area=0.45m2

Now let calculate what pressure is exerted using this formula

Pressure=Force/Area

Where,

Force=Mass *Gasoline

Area=Width of the tank* Length of the tank

Let plug in the formula

Pressure=50*9.8/0.5*0.9

Pressure=490/0.45

Pressure=1088.9N/m2

Therefore What pressure is exerted is 1088.9N/m2

3 0
2 years ago
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