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3 years ago

I saw this in the sky. Not moving and very bright. Any chance this is a planet?

Physics

1 answer:

liq [111]3 years ago

3 0

Idk since it looks sooooo close ,but is it is that’s really cool

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There are many interesting applications of our energy density model to the flow of blood in the human circulatory system. One in

qaws [65]

Answer:

Pressure increases due to enlargement

Explanation:

Energy density is just a fancy name for pressure

Pressure is same at the bottom of the cups (same level-Pascal's law)

thus, Air pressure 1 + h1d1g = Air pressure 2 + h2d1g

= Air pressure 3 + (h2-h1)d2g +h1d1g

from the first 2, we get that since h2>h1, AP2<AP1

from the next 2, we get that since d2<d1, AP3>AP2

from first and third, we get that AP1>AP3

thus, finally AP1>AP3>AP2

for fluids flowing in tubes (blood vessel in this case)

P+0.5dv^2 + gh is constant (also called the bernoulli equation

for the same blood vessel, the heights remain same i.e h1=h2

for same flow rate, inc in area decreases the speed at which the blood flows as vA must remain same

hence, P increases due to enlargement

5 0

3 years ago

Read 2 more answers

1. A Zambeef delivery track travels 18 km north, 10 km east, and 16 km south. What is its final displacement from the origin?

VARVARA [1.3K]

Answer:

2km

Explanation:

Given data

We are told that the direction traveled are

North>>>East>>>South

Hence the displacement is defined as the distance away from the initial position is

Initial position =18km

FInal position = 16km

The displacement = 18-16= 2km

Hence the displacement is 2km

6 0

3 years ago

hi :) is it true that zero acceleration means the object can be moving at constant velocity or at rest?

nirvana33 [79]

Answer:

Explanation:

Please let me know if my answer is correct

7 0

3 years ago

Read 2 more answers

What is electron affinity?

Andrews [41]

Answer:

The electron affinity of an atom or molecule is defined as the amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion.

4 0

3 years ago

The density of a solid cube is 678.2 kg/m^3. (Note that each edge is 4.8 cm in length and the mass is 75g.) When the cube is pla

Galina-37 [17]

Answer:

Part a)

F = 0.735 N

Part b)

$percentage = 67.9%$

Explanation:

As we know that mass of the cube is given as

$M = \rho V$

$M = \rho a^3$

$M = (678.2) (4.8 \times 10^{-2})^3$

$M = 0.075 kg$

Now we know that cube is floating in the water

So net force due to weight of the cube must be counter balanced by buoyancy force on the liquid

so we have

$F_b = mg$

$F_b = 0.075 \times 9.81$

$F_b = 0.735 N$

Part b)

Percentage of volume submerged into the liquid is given as

$F_b = \rho V g$

$0.735 = 1000 V \times 9.8$

$V = 7.71 \times 10^{-5} m^3$

now percentage of submerged liquid is given as

$percentage = \frac{7.71 \times 10^{-5}}{(4.8 \times 10^{-2})^3}\times 100$

$percentage = 67.9%$

5 0

3 years ago