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3 years ago

Physical quantities expresed only by their magnitude is

Physics

1 answer:

MrMuchimi3 years ago

8 0

Answer:

Scalar quantity is the Physical quantity expresed only by their magnitude.

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Explain how the basic units are combined to give the derived units of force, velocity and pressure and work

Lorico [155]

#Force

$\\ \sf\longmapsto Force=Mass\times Acceleration$

$\\ \sf\longmapsto Force=kg m/s^2$

$\\ \sf\longmapsto Force=Newton (N)$

#Velocity

$\\ \sf\longmapsto Velocity=\dfrac{Displacement}{time}$

$\\ \sf\longmapsto Velocity=m/s$

#Work

$\\ \sf\longmapsto Work=Force\times Displacement$

$\\ \sf\longmapsto Work=Nm$

$\\ \sf\longmapsto Work=Joules(J)$

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3 years ago

What is the sum of 231 + 5080 + 80 + 13 + 9

Gemiola [76]

Answer:

5413

Explanation:

add them up

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3 years ago

An airplane is pushed 22 degrees eastward off its northward course by a jet stream traveling at a speed of 136.73 km/hr. The new

uranmaximum [27]

As the speed of airplane is change due to jet stream

So the net speed is given as

$v_{net} = v_{plane} + v_{stream}$

now we can rearrange it as

$v_{plane} = v_{net} - v_{stream}$

now by the formula of vector difference we have

$v_{plane} = \sqrt{v_{net}^2 + v_{stream}^2 - 2v_{net}v_{stream}cos\theta}$

now plug in all values

$v_{plane} = \sqrt{365^2 + 136.73^2 - 2* 365* 136.73*cos22}[tex]v_{plane} = 243.7 km/hr$

so above is the speed of the plane

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3 years ago

Hmu if u brave shawtys

Kitty [74]

Answer:

BET, & done ✌

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3 years ago

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The advantages and disadvantages of using copper, steel and aluminium in electrical cables.

katrin [286]

Advantages of copper cables are that copper is an extremely powerful conductor of electricity and much more stable over time. It can withstand higher temperatures than aluminum and is more resistant to damage. Disadvantages: Copper is more expensive and heavier and thus requires structural support. Advantages of aluminum cables are that it is less expensive, easier to work with and light weight and so does not need structural support when strung over long distance. Disadvantages: Aluminum is more susceptible to corrosion and requires periodic replacement. It needs much greater maintenance. Advantages of steel cables are that steel does not rust, is fairly cheap and readily available. It has a higher tensile strength too. Disadvantages: Steel cables are less ductile and are therefore more susceptible to fatigue.

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3 years ago

Physical quantities expresed only by their magnitude is​

Physical quantities expresed only by their magnitude is