PHYSICS MIDDLE SCHOOL

Every atom of the ____ carbon has 6 protons.

Answers

Answer 1
Answer:

Hi, the answer for this question is element!

Hope this helped!

Plz mark brainliest!

~Nate

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If an object is falling downward, is the acceleration due to gravity (9.8 m/s/s) negative?

Answers

NO! ACCELERATION IS NEVER NEGATIVE UNLESS IT IS SLOWING DOWN.
No because the acceleration is getting larger. If the object was slowing down it would be negative. It does not matter in direction. Its wether is is speeding up or slowing down.

What circuit that has only one path for the
current to follow?

Answers

Answer:

Series circuit

Explanation:

By definition series circuit is a closed circuit in which the flow of electric current follows only one path.

In a simple electrical circuit (which is a series circuit) where electric cell is the source of power, each component is connected in such a way that there is only one pathway current flows from the positive terminal(+) round to the negative terminal(-) via the external circuit.

Current having only one pathway to flow means that when one of the components is removed, there will be no current flow.

What causes earthquakes and volcanic erruptions

Answers

Tectonic plates under the ground ,either go on top of each other or crash.
The tectonic plates as they have energy that causes volcanic explosions and earthquakes. SCIENCE!!!!!!!

What is air resistance a form of? Define air resistance

Answers

Answer:

By definition, air resistance describes the forces that are in opposition to the relative motion of an object as it passes through the air. These drag forces act opposite to the oncoming flow velocity, thus slowing the object down.

Explanation:

James Cameron piloted a submersible craft to the bottom of the Challenger Deep, the deepest point on the ocean's floor, 11,000 m below the surface. What was the total inward force on the 1.1-m-diameter pilot sphere in which Cameron sat?

Answers

Answer:

4.1\cdot 10^8 N

Explanation:

First of all, we need to find the pressure exerted on the sphere, which is given by:

p=p_0 + \rho g h

where

p_0 =1.01\cdot 10^5 Pa is the atmospheric pressure

\rho = 1000 kg/m^3 is the water density

g=9.8 m/s^2 is the gravitational acceleration

h=11,000 m is the depth

Substituting,

p=1.01\cdot 10^5 Pa + (1000 kg/m^3)(9.8 m/s^2)(11,000 m)=1.08\cdot 10^8 Pa

The radius of the sphere is r = d/2= 1.1 m/2= 0.55 m

So the total area of the sphere is

A=4 \pi r^2 = 4 \pi (0.55 m)^2=3.8 m^2

And so, the inward force exerted on it is

F=pA=(1.08\cdot 10^8 Pa)(3.8 m^2)=4.1\cdot 10^8 N

The total inward force is about 4.1 × 10⁸ N

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Further explanation

Let's recall Hydrostatic Pressure formula as follows:

\boxed{ P = \rho g h}

where:

P = hydrosatic pressure ( Pa )

ρ = density of  fluid ( kg/m³ )

g = gravitational acceleration ( m/s² )

h = height of a column of liquid ( m )

Let us now tackle the problem!

\texttt{ }

Given:

depth of the ocean's floor = h = 11 000 m

diameter pilot sphere = d = 1.1 m

atmospheric pressure = Po = 10⁵ Pa

Asked:

total inward force = F = ?

Solution:

F = P A

F = ( P_o + \rho g h ) A

F = ( P_o + \rho g h ) ( \pi d^2 ) → Area of Sphere = π d²

F = ( 10^5 + 1000 * 9.8 * 11000 ) ( \pi * 1.1^2 )

F \approx 4.1 * 10^8 \texttt{ Newton}

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Conclusion:

The total inward force is about 4.1 × 10⁸ N

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Learn more

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Answer details

Grade: High School

Subject: Physics

Chapter: Pressure

What causes rocks to change composition when reacting with oxygen?
 Please help!!

Answers

Acid reactions and oxidation
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