How many neutral points does a bar magnet have

Answers

Answer 1

Answer:

Answer:

There are two neutral points. At a neutral point, the net magnetic field becomes zero.

Explanation:

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Which law of motion accounts for the following statement?"The gravity of the Sun causes the planets to move in a circular path."

Answers

Explanation :

The gravity of the Sun causes the planets to move in a circular path. This is because of Newton's first law of motion.

According to Newton's first law, the body will remain at rest or in uniform motion untill external unbalanced force acts.

There are two forces acting on planets i.e. gravitational force and inertia of their orbits. So, form Newton's first law the planets keeps on moving in a circular path.

The law that accounts for that exact statement is the law that says that
most people don't understand these things very well.

A better statement is:
"The gravitational forces between the Sun and each planet cause each planet
to move in an elliptical path."

The laws that account for that behavior are:

-- Newton's second law of motion: (Force) = (mass) x (acceleration)

-- Newton's law of universal gravity

Does a negative charge indicates a lack of free electrons in a body.

Answers

No. Electrons are negative, so if a body has negative charge is because it has excess of electrons.

The work done by stretching a certain spring increases by 0.13x joules per centimeter (where x is the displacement, in centimeters, beyond the spring's natural length). How much work (in Joules) must be done in order to stretch the spring from x?

Answers

Answer:

$W = 0.06\cdot (x_(f)^(2)-x_(o)^(2))$

Explanation:

The work done by stretching the spring is:

$W = 0.13\int\limits^{x_(f)}_{x_(o)} x\, dx$

$W = 0.06\cdot (x_(f)^(2)-x_(o)^(2))$

Lien uses a spring scale to pull a block toward the right across the lab table. The scale reads 8 N. Which force should Lien conclude is also 8 N?

Answers

Answer

The force on the left across the lab table.

Explanation

The Newton's third law of motion states that; action and reaction are equal but a ct in opposite direction.

When the block of is pulled on the right with a force of X Newtons then there is a force -X Newtons applying and equal force on the left. For every action there must be a reaction with is equal and applying in the opposite direction.

So, if the block is pulled on the right by a force of 8 N there is another equal force applying on the left.

The force to the left of the block on the spring scale

Which is occurring when work is being done? energy is being reverted. energy is being decreased. energy is being increased. energy is being transferred.?

Answers

The work is an effect that is observed due to the application of force. Taking the concern of work-energy principle, the work is done when there is a transfer of energy take place.

What is Work Done?

When some magnitude of the force is being applied on an object to displace, then the term used to describe the effect is known as work done.

The mathematical expression for the work done is given as,

W = F × d

here,

F is the magnitude of applied force.

d is the displacement.

If we compare work with energy then, Energy, on the other hand, is the ability to do work. According to the work-energy principle, a change in the kinetic energy is equivalent to the net work done by the object. Therefore, energy is being transferred from one point to another when work is being done.

Thus, we can conclude that the work is done when a transfer of energy takes place.

Learn more about the work done here:

brainly.com/question/13594876

Answer;

Energy is being transferred

Explanation;

Work is the force applied over a given distance, in other words work is the product of force and distance.

Work = force × distance.

Work is measured in Joules.

Energy on the other hand, is the ability to do work.
According to the principle of work-energy a change in the kinetic energy is equivalent to the net work don e by the object. Therefore, when work is being done energy is being transferred from one point to another.

the resistance of a wire of length 80cm and of uniform area of cross-section 0.025cmsq., is found to be 1.50 ohm. Calculate specific resistance of wire in SI units, Help please

Answers

$Specific\ resistance\ =resistivity\n From\ formula\ on \ resistance:\ R= (pL)/(A)\ p-resistivity,\ L-length,\n A-area\ of\ cross\ section\n p= (R*A)/(L)= (1,5Ohm*0,025*10^(-4)m^2 )/(80* 10^(-2)m )=0,0003515625 Ohm*m$

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