Joan makes the device shown in her science class.An illustration with a battery and ends labeled positive and negative. A wire is connected to the positive end of the battery and curls around an iron nail and connects back with the negative side of the battery.
What would happen to the magnetic field if she connects the battery in the opposite direction?
The field would stop.
The field would get stronger.
The field would reverse its poles.
The field would get weaker.
Answers
If she connects the battery in the opposite direction, the magnetic field would reverse its poles.
What is magnetic field?
The magnetic field is the region of space where an object experiences the magnetic force and obtain magnetic properties.
A wire is connected to the positive end of the battery and curls around an iron nail and connects back with the negative side of the battery. This arrangement will let the current flow from the positive end of the battery towards the negative terminal of the battery.
If the battery is connected in the opposite direction, the current will flow from negative to positive terminal.
Therefore, If she connects the battery in the opposite direction, the magnetic field would reverse its poles.
Learn more about magnetic field.
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Answer:
The field would reverse its poles.
Explanation:
The current flow will reverse directions which will reverse the poles in the magnetic field created around the iron nail.
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The weight of an object on a planet depends not only on its mass, but also on its distance from the planets center. Uranus has more than 14 times as much mass as earth, yet the gravitational force is less. Explain how this could be. Pleas answer cause idk what it means.
Why do you think sound travels faster in steel than it does in wood? (Hint: Think about the densities of the two materials, and how the particles might be arranged.)
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Answer:
Shown from explanation
Explanation:
You have heard that expression what ever goes up must come down that's usually used to mean when you throw an object up, it comes down on its accord. This is due to a force on the earth that occurs in nature known as gravity.
So when an object falls under this influence it's said to fall freely.
Note not all heavenly bodies have gravitational pull, from experience by scientists who went to the moon they found out whatever goes up keeps flying endlessly so in that case an external force is needed to keep objects in the moon on ground level.
Hence the parachute falls on earth freely without an external force but on the moon it must fall with an external force inputed on the parachute system.
This means in the earth we have free fall but in the moon no such thing exist. So a body falls freely when there is gravity.
Answers
Work is defined as the conversion of energy. The given motor can give 3456000 J of work.
Power:
It is defined as the ability of a machine to do work or as the time rate of energy conversion.
P=E/t,
E = P x t
Where,
P = power = 5,400 W
W = energy (J) = ?
t = time = 640 s
Put the values in the formula,
W= 5400 x 640
W = 3456000 J.
Therefore, the given motor can give 3456000 J of work.
To know more about work,
where P=power (W),
E=energy (J) and
t=time (s).
Just rearrange this formula to obtain E=P*t=5400*640=3456000 J.
Energy and work are very related since energy is defined like the ability of doing work. Actually work is also measured in J so the answer is the one above.
Work = 3456000 J
260 m
35.8 m
848 m
Answers
Answer:
35.8 m
Explanation:
An appropriate formula is ...
The initial velocity is 0, and the acceleration due to gravity is 9.8 m/s², so the distance, d, is ...
Answers
b. fall over once you overcome its inertia
c. push against you with equal force
d. heat up due to energy transfer
Answers
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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C. push against you with equal force
Answers
its f2 to the ca +f2