3 years ago

Physics is the study of what?

1 answer:

5 0

Answer: Physics is the study of Nature.

Explanation: The knowledge of Nature is the natural science that studies matter, its motion and behavior through space and time, and that studies the related entities of energy and force. Hope this helps. :D

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An intravenous (IV) system is supplying saline solution to a patient at the rate of 0.06 cm3/s through a needle of radius 0.2 mm

horsena [70]

Answer:

Pressure applied to the needle is 7528 Pa

Explanation:

As we know by poiseuille's law of flow of liquid through a cylindrical pipe

the rate of flow through the pipe is given as

$Q = \frac{\Delta P \pi r^4}{8\eta L}$

now we know that

$Q = 0.06 \times 10^{-6} m^3/s$

radius = 0.2 mm

Length = 6.32 cm

$\eta = 1\times 10^{-3} Pa s$

now we have

$6 \times 10^{-8} = \frac{\Delta P \pi (0.2 \times 10^{-3})^4}{8(1 \times 10^{-3})6.32 \times 10^{-2}}$

$3.03 \times 10^{-11} = \Delta P 5.02 \times 10^{-15}$

$\Delta P = 6028 Pa$

now we have

$P - 1500 = 6028 Pa$

$P = 7528 Pa$

8 0

3 years ago

If a force of 32000N exerted pressure of 160N/m² , find the area on which the force acts.

Alex17521 [72]

Answer: 200m^2

Explanation:

160N=32000N/x

x*160N=32000

x=200m^2

4 0

2 years ago

How can people reach their full potential?

PolarNik [594]

If they have self motivation or others motivation, they will show their full potential.

6 0

4 years ago

Why does the frequency of a wave increase as the wavelength decreases? A) because the wave speed remains constant B) because the

Elanso [62]

A is the correct answer

8 0

3 years ago

Read 2 more answers

What are the change in internal energy if 250 j of hear is added to a system of 80 j of work is done by the system

Sphinxa [80]

Answer:

Explanation:

dU= dq+w

dU is change in internal energy of the system

dq is the amount heat added or released by the system which be positive or negative respectivelý

And w is the amount of work done by the system or on the system which will be positive or negative respectively.

Hence,

dU= 250+80= 330 J

The change will be positive

5 0

4 years ago