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leva [86]
3 years ago
15

Compare and contrast area and volume

Physics
1 answer:
katovenus [111]3 years ago
6 0
Area is a region bounded by a CLOSED path, curved path or path with line segments.  Area is usually a two dimensional physical quantity, a designated part on a plane.  An example the surface of a table, face of a wall or a ceiling.  It can also be a surface in 3-dimensions.  Its units are meter² or centimeter² or feet²  etc. A large agricultural field is a good example of an area.  Normally and ideally no object can reside or exist with in an area. An object requires a volume.  It is a collection of all points enclosed or bounded by the boundary or closed path.  It does not have any thickness.

Volume is a 3-dimensional quantity. A physical body occupies space with its material components. It is the amount of space occupied, that is its volume. Any existing body occupying some space has a mass and volume.  A mass having a volume, has surface area and thickness, a height perpendicular to its surface at each point on the surface.
It is expressed as meter³, feet³ etc.
Volume is a product of surface area (cross-section) and length - for example for a wire or rod.

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A falling skydiver has a mass of 105 kg. What is the magnitude of the skydiver's acceleration when the upward force of air resis
LenKa [72]
F-free = m*g - F_air = m*a

F_air = 1.2 * m

a= (105 kg * 9.8 m.s^2 - 5*105) / 105 kg

a = 9.3 m/s

Hope this helps
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8 0
4 years ago
The coefficient of linear expansion of steel is 12 × 10-6 K-1 . What is the change in length of a 25-m steel bridge span when it
Westkost [7]

Answer:

0.012-m

Explanation:

∆L = α × Lo × (T-To)

α is the coefficient of linear expansion = 12 × 10-6 K-1

Lo = Initial length = 25-m

∆L = Change in length

(T-To) = 40 K

∆L = 12 × 10-6 × 25 × 40

∆L = 0.012-m

4 0
3 years ago
What is the mass if an object moving with a speed of 9m/s and a kinetic energy if 2000 J​
stepladder [879]

Solve for mass:

m= 2k/v(squared)

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7 0
3 years ago
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