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Alex787 [66]
3 years ago
14

What is physical quantity?​

Physics
1 answer:
-Dominant- [34]3 years ago
3 0

Explanation:

physical quantity is a property of a material or system that can be quantified by measurement. A physical quantity can be expressed by either a numerical value, the product of a numerical value and a unit or a finite sequence of numerical values and units.

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The speed of sound in aluminum is 5200 m/s. Can you hear a sound with a
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v = wavelength * frequency

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The generation of a magnetic field by an electric current is___ .
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Answer:

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1 year ago
An owl weighing 40N is sitting in a tree waiting to dive down to catch a mouse. If the owl's potential energy is 800 J with resp
Natali5045456 [20]

Answer:

<em>h = 20 m</em>

Explanation:

<u>Gravitational Potential Energy</u>

Gravitational potential energy (GPE) is the energy stored in an object due to its vertical position or height in a gravitational field.

It can be calculated with the equation:

U=m.g.h

Where m is the mass of the object, h is the height with respect to a fixed reference, and g is the acceleration of gravity or 9.8 m/s^2.

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Thus, the GPE is:

U=W.h

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\displaystyle h=\frac{U}{W}

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\displaystyle h=\frac{800}{40}=20

h = 20 m

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3 years ago
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