PHYSICS HIGH SCHOOL

According to Newton's third law of motion, if you push against a wall, the wall will __________.a. attract you with its low gravity
b. fall over once you overcome its inertia
c. push against you with equal force
d. heat up due to energy transfer

Answers

Answer 1
Answer:

c. push against you with equal force

What is newton's third law of motion?

Newton's third law simply states that for every action there is an equal and opposite reaction.

So, if object A acts a force upon object B, then object B will exert an opposite yet equal force upon object A.

Newton's third law of motion describes that,

Forces always act in equal but opposite pairs.

Another way of saying this is for every action, there is an equal but opposite reaction.

This means that when you push on a wall, the wall pushes back on you with a force equal in strength to the force you exerted.

A person pushes against a wall (action force), and the wall exerts an equal and opposite force against the person (reaction force).

Therefore,

According to Newton's third law of motion, if you push against a wall, the wall will push against you with equal force.

Learn more about Newton's third law of motion here:

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Answer 2
Answer:

C. push against you with equal force

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a lump of putty and a rubber ball have equal mass. both are thrown with equal speed against a wall. the putty sticks to the wall. the ball bounces back at nearly the same speed with which it hit the wall. which object experiences the greater momentum change?

Answers

The bouncy ball experiences the greater momentum change.

To understand why, you need to remember that momentum is actually
a vector quantity ... it has a size AND it has a direction too.

The putty and the ball have the same mass, and you throw them
with the same speed.  So, on the way from your hand to the wall,
they both have the same momentum.
Call it " M in the direction toward the wall ".

After they both hit the wall:

-- The putty has zero momentum.
    Its momentum changed by an amount of  M .

-- The ball has momentum of " M in the direction away from the wall ".
    Its momentum changed by an amount of  2M .

Rubber ball will experience the greater momentum change than the lump of putty

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Further explanation

Newton's second law of motion states that the resultant force applied to an object is directly proportional to the mass and acceleration of the object.

\large {\boxed {F = ma }

F = Force ( Newton )

m = Object's Mass ( kg )

a = Acceleration ( m )

Let us now tackle the problem !

\texttt{ }

Given:

mass of a lump of putty = m

mass of rubber ball = m

initial speed of putty = v

final speed of putty = 0

initial speed of rubber ball = v

final speed of rubber ball = -v

Asked:

the change in momentum = Δp = ?

Solution:

Lump of Putty :

\Delta p_(putty) = mv_f' - mv_i

\Delta p_(putty) = m(0) - mv

\Delta p_(putty) = - mv

\texttt{ }

Rubber Ball:

\Delta p_(ball) = mv_f' - mv_i

\Delta p_(ball) = m(-v) - mv

\Delta p_(ball) = - 2mv

\texttt{ }

\Delta p_(ball) : \Delta p_(putty) = - 2mv : - mv

\Delta p_(ball) : \Delta p_(putty) = 2 : 1

\Delta p_(ball) = 2\Delta p_(putty)

\Delta p_(ball) > \Delta p_(putty)

From calculation above , we can conclude that rubber ball will experience the greater momentum change than the lump of putty

\texttt{ }

Learn more

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Answer details

Grade: High School

Subject: Physics

Chapter: Dynamics

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Keywords: Gravity , Unit , Magnitude , Attraction , Distance , Mass , Newton , Law , Gravitational , Constant

Rate at which electric energy is converteto another form (2 words)

Answers

electric power!!!!!!!

A charged atom is called a(n) _____.

Answers

A charged atom is called a(n) ion. It can be negative charge or positive.

The answer to this is ion.

Explain the mechanism by which AC (alternating current) through the primary circuit of a transformer produces an alternating voltage and current in the secondary coil. Then explain why this would or would not work with DC (nonalternating current) in the primary coil.

Answers

Answer:

It is based on the principle of electromagnetic induction.

Explanation:

When a magnetic flux linked with a coil changes, an induced emf and induced current is developed in the coil. This phenomenon is called electromagnetic induction.

AC current is time varying sinusoidal current, but DC current is steady current.

When an AC current pass through the primary coil of transformer, the magnetic flux linked with the coil changes. This magnetic flux is linked with the secondary coil which is placed near to the primary coil. As the flux changes in the secondary coil, the induced voltage and current is produced in the secondary coil of transformer.

In case of DC current, there is no changing flux because DC current is steady current, so DC current would not work in case of transformer.
The right answer for the question that is being asked and shown above is that: "It takes a changing magnetic field to create an electric field. So if it was DC the magnetic field from the primary would be unchanging, and no voltage would be induced." 

The intense heat from Earth's interior that warms the magma beneath Earth's surface is called?

Answers

Answer:

Geothermal energy

Explanation:

The geothermal energy causes the interior of the Earth to warm up. It warms the magma beneath the surface of the Earth. It is derived within the subsurface by water or wind. It is also used to generate electricity in geothermal power plants. Hot water reservoirs can be found deep in earth's surface. Its steam is used to rotate the turbines and electricity can be generated.

Its called Geothermal Energy that is the source of the heat inside the earth from its mantle to its core. It can be use electrical energy but only when it will be converted. This energy allows the earth to maintain its temperature.

Brownian motion cannot be detected in colloids. True or false?

Answers

Brownianmotion is the random movement of colloidal particles suspended in a fluid. It iscaused by random collisions of the molecules in the fluid medium. The particlesin the solution or colloids are in constant random movement. A colloid hasproperties boundary to a homogenous and heterogeneous mixture. However inBrownian movement, the larger the size of a particle, the lesser its motion andthe smaller the size of the particle, the higher is motion. Colloids in generalhave larger particle size and therefore it Brownian motion is sluggish. The statementis false.
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