Which information about the earth would not be represented when a globe is used as a model?Choose all answers that are correct.

A.
different geographic regions on the earth

B.
the speed of revolution around the sun

C.
the location of all continents found on the earth

D.
the speed of rotation on its axis

Answers

Answer 1

Answer: A globe sitting on the desk can't demonstrate the speed of axial rotation
or the speed of orbital revolution.

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Four small spheres, each of which you can regard as a point of mass 0.200 kg, are arranged in a square 0.400 m on a side and connected by light rods. Find the moment of inertia of the system about an axis through the center of the square, perpendicular to its plane.

Answers

The moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is $0.0636 \;\rm kg-m^(2)$ .

Given data:

The mass of each sphere is, $m = 0.200 \;\rm kg$ .

Length of side of square is, $L = 0.400 \;\rm m$ .

The expression for the moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is,

$I = 4 mR^(2)$

Here,

R is the distance between center of the square and the sphere. And its value is,

$R =(1)/(2)\sqrt{L^(2)+L^(2)}\nR =(1)/(2)\sqrt{0.400^(2)+0.400^(2)}\nR = 0.282 \;\rm m$

Then, moment of inertia is,

$I = 4 mR^(2)\nI = 4 * 0.200 * 0.282^(2)\nI = 0.0636 \;\rm kg-m^(2)$

Thus, the moment of inertia of the system about an axis through the center of the square, perpendicular to its plane is $0.0636 \;\rm kg-m^(2)$ .

Learn more about moment of inertia here:

brainly.com/question/2176093?referrer=searchResults

The moment of inertia of the system about an axis through the center of the square, perpendicular to the plane is 0.064 kg.m²

$\texttt{ }$

Further explanation

Let's recall Moment of Inertia formula as follows:

$\boxed{ I = m R^2 }$

where:

I = moment of inertia

m = mass of object

R = distance between the object and the axis of rotation.

Given:

mass of sphere = m = 0.200 kg

length of side = x = 0.400 m

Asked:

net moment of inertia = ΣI = ?

Solution:

Let's ilustrate this question as shown in the attachment.

Firstly , let's find distance between center of the square and the sphere:

$R = (1)/(2) √(x^2+x^2)$

$R = (1)/(2) √(2x^2)$

$R = (1)/(2)√(2) x$

$R = (1)/(2) √(2) (0.400)$

$\boxed{R = 0.200√(2) \texttt{ m}}$

$\texttt{ }$

Next , we could find total moment of inertia as follows:

$\Sigma I = mR^2 + mR^2 + mR^2 + mR^2$

$\Sigma I = 4mR^2$

$\Sigma I = 4(0.200)(0.200√(2))^2$

$\boxed{\Sigma I = 0.064 \texttt{ kgm}^2}$

$\texttt{ }$

Learn more

Ratio of Moment of Inertia : brainly.com/question/2176655
Net Torque on the objects : brainly.com/question/9612563
Impacts of Gravity : brainly.com/question/5330244
Effect of Earth’s Gravity on Objects : brainly.com/question/8844454
The Acceleration Due To Gravity : brainly.com/question/4189441

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Answer details

Grade: High School

Subject: Physics

Chapter: Rotational Dynamics

How is the motion of P waves different from the motion of S waves?

Answers

S waves travel slower than P waves.

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Answers

Answer:

Physics contributes to the technological infrastructure and provides trained personnel needed to take advantage of scientific advances and discoveries. Physics is an important element in the education of chemists, engineers and computer scientists, as well as practitioners of the other physical and biomedical sciences.

Explanation:

The amplitude of a sound wave determines itsloudness
pitch
frequency
wavelength

Answers

The Loudness i believe.

When Jackson throws a tennis ball in a straight path, what two forces cause the ball to eventually stop moving?

Answers

After Jackson lets go of the ball, there are two forces on it
that influence what it's going to do. They are gravity and
air resistance.

Air resistance is just plain friction. As long as the ball continues
to move through air, it loses kinetic energy to the air and gradually
slows down.

While the ball is in the air, there are no other forces on it that cause
it to stop moving.

If you absolutely must have another one, it doesn't occur until the
ball hits the ground. But that isn't even another force. It's just more
friction, from scraping against concrete and grass.

Gravity pulls the ball down to the ground. But gravity doesn't make
the ball stop moving. In fact, gravity tries to make it move faster and
faster, and gravity would succeed if it weren't for all the friction that
the ball encounters.

Well, the force that originally caused it to start moving was inertia, but the forces that cause it to stop are friction and gravity. Gravity pulls the object towards the center of the Earth, causing it to slow and eventually stop, and friction is the resistance between the ball and the ground (or whatever).

Hope this helps!

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