Question

Define
: Rigidity
: Compresáblity
: Density
:atmospheric pressure


class 9 science ​

Answer 1

Answer:

Rigidity – meaning stiff or inflexible muscles – is one of the main motor symptoms of Parkinson's, along with tremor and slowness of movement (bradykinesia). Muscles become rigid because of their inability to relax

Compressibility is a measure of the relative volume change of a solid or a fluid in response to a pressure change. For a given mass of fluid, an increase in pressure, Δp > 0, will cause a decrease in volume, ΔV < 0.

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.

Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa; 1,013.25 mbar), which is equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.

Explanation:

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