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2 years ago

What does it mean when there is a physical change?

Physics

2 answers:

emmainna [20.7K]2 years ago

8 0

Answer:

D.matter has changed size,shape, or form

Explanation:

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valkas [14]2 years ago

7 0

Answer:

Chemists make a distinction between two different types of changes that they study—physical changes and chemical changes. Physical changes are changes that do not alter the identity of a substance. Chemical changes are changes that occur when one substance is turned into another substance

Explanation:

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A small artery has a length of 1.10 × 10-3 m and a radius of 2.50 × 10-5 m. If the pressure drop across the artery is 1.15 kPa,

levacccp [35]

Answer:

$7.69533\times 10^{-11}\ m^3/s$

Explanation:

P = Pressure difference = 1.15 kPa

r = Radius = $2.5\times 10^{-5}\ m$

$\eta$ = Viscosity of liquid = $2.084\times 10^{-3}\ Pas$

l = Length of artery = $1.1\times 10^{-3}\ m$

From Poiseuille's equation we have

$Q=\frac{\pi Pr^4}{8\eta l}\\\Rightarrow Q=\frac{\pi 1.15\times 10^3\times (2.5\times 10^{-5})^4}{8\times 2.084\times 10^{-3}\times 1.1\times 10^{-3}}\\\Rightarrow Q=7.69533\times 10^{-11}\ m^3/s$

The flow rate of blood is $7.69533\times 10^{-11}\ m^3/s$

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2 years ago

According to the law of conservation of mass, how would the masses compare?

Zarrin [17]

Explanation:

According to the law of conservation of mass, the masses at the start and finish of a reaction will stay the same. The law of conservation of mass "mass is always constant in a chemical reaction".

The law is the basis for chemical calculations.
Masses of reactants and products must be the same to show that mass is always conserved.
Disparity in the mass could result from loss of mass to the environment or some side reactions that cannot be easily monitored.

Learn more:

Law of conservation of mass brainly.com/question/5896850

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3 years ago

Carrie observes a blue object. Which color(s) of light does this object absorb

Ronch [10]

The object carries all colors except blue.

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3 years ago

A bucket of water experiencing a gravitational force of 525 N is pulled up from a water well. The net force in the y-direction i

lukranit [14]

Answer:

6n!!!!!!!!!!!!!!!!!!

Explanation:

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2 years ago

Explain how one rock can turn into another

amm1812

Answer:

The rock cycle is the process by which rocks of one kind change into rocks of another kind. ... Metamorphic rock is igneous or sedimentary rock that has been heated and squeezed. It can erode into sediment or melt into magma.

Explanation:

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3 years ago