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tiny-mole [99]
3 years ago
11

Is 45 m/s2 a scalar or a vector quantity and how do you know?

Physics
1 answer:
Umnica [9.8K]3 years ago
5 0

Answer:

Explanation:

it is a vector as it has a magnitude and a direction. If it was a scalar quantity it would just have a magnitude and would be 45 m. Acceleration is an example of a vector quantity

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PLEASE HELP!! WILL REWARD!!
Fudgin [204]

velocity = \frac{displacement}{time}

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On the other hand, the plane could fly at different speeds at different periods of time. It will be so much more complicated if we have to calculate it. That's why this question only asks you to calculate the average velocity of the plane, ie. \frac{total displacement}{total time}

So, we have

the required average velocity = \frac{2558}{5}

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6 0
3 years ago
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A nuetral atom has no overall charge. Explain this in terms of its particles.
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alexandr402 [8]

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6 0
3 years ago
A copper cylinder is initially at 21.1 ∘C . At what temperature will its volume be 0.163 % larger than it is at 21.1 ∘C?
fomenos

To solve this problem we will apply the concepts related to the final volume of a body after undergoing a thermal expansion. To determine the temperature, we will use the given relationship as well as the theoretical value of the volumetric coefficient of thermal expansion of copper. This is, for example to the initial volume defined as V_1, the relation with the final volume as

V_2 = V_1 +0.163\% V_1

V_2 = V_1 +0.00163V_1

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Let T be the temperature after expanding by the formula of volume expansion

we have,

V_2 = V_1 (1+\gamma \Delta t)

Where \gamma is the volume coefficient of copper 5.1*10^{-5}/C

1.00163V_1 = V_1(1+\gamma(T-21.1\°))

1.00163 = 1+5.1*10^{-5}(T-21.1\°)

0.00163 = 0.000051T-0.0010761

T = 53.0608\°C

Therefore the temperature is 53.06°C

7 0
4 years ago
Is it possible to decrease a density of a certain metal. if so how​
prohojiy [21]

Answer:

Density can be decreased by increasing the volume and keeping the mass same .

8 0
3 years ago
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