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What is the SI unit of energy please explain?
The SI unit of energy is the joule (J). One joule is equal to the work done by a force of one newton acting over a distance of one meter. Energy can be converted between different forms such as kinetic, potential, and thermal energy.
What can magnets exert force from?
From the magnet.
Can you think of two particles which do not exert force on each other?
Photons do not exert force on each other, as they are massless particles that carry electromagnetic force. Neutrinos also do not exert force on each other, as they only interact weakly through the weak nuclear force and gravity.
What all masses exert on other masses?
All masses exert a gravitational force on other masses, causing them to attract each other. The strength of this force depends on the masses of the objects and the distance between them, as described by Newton's law of universal gravitation. This force is responsible for phenomena such as orbits of planets around the sun and the attraction between objects on Earth.
Is it true that you need to be in contact with a mass for us to be affected by its gravitational pull?
No, you do not need to be in direct contact with a massive object for it to exert a gravitational pull on you. Gravity is a fundamental force that acts over a distance, meaning that any two objects with mass will exert a gravitational force on each other, regardless of physical contact.
What happens to the distance over which you exert your force?
The amount of force you exert remains the same, but the distance over which you exert the force can affect the work done. If you exert a force over a longer distance, you may do more work because the force acts over a greater distance. If the distance over which you exert the force is shorter, the work done may be less.
3 ways simple machines make work easier?
Machines make work easier by: -Changing the amount of force you exert -Changing the distance in which you exert your force -Changing the direction in which you exert your force
Explain how machines make work easier if they do not decrease the amount of work you need to do?
A machine makes work easier by changing the amount of force you exert, the distance over which you exert your force, or the direction in which you exert your force.
What do massive objects exert?
Massive objects exert gravitational force. This force attracts other objects with mass towards them. The magnitude of the force depends on the masses of the objects and the distance between them.
How do machines make work easier?
A machine makes work easier by changing at least one of three factors. A machine may change the amount of force you exert, the distance over which you exert your force, or direction in which you exert your force.
When do you do work?
when you exert a force on an object that causes the object to move some distance.
Is energy needed for force?
Energy is not needed for force itself, as force is simply a push or pull acting upon an object. However, energy is required to apply a force over a distance, which is termed work. Work involves transferring energy to an object to exert a force on it.
In a second class lever why must you exert input force over a greater distance?
If the input force is applied at a greater distance than the length of the effort arm is increased thereby reducing the effort.
Do objects have to be touching each other to exert electrical force?
No, objects do not have to be touching each other to exert electrical force. The force between charged objects can be exerted through electric fields, which can act over a distance. This force diminishes with distance according to Coulomb's Law.
What is it when you exert force on an object that causes the object to move?
When you exert force on an object that causes it to move, it is called mechanical work. Work is defined as the product of the force applied to an object and the distance over which the force is applied in the direction of the force.
Why can a magnet can exert a force over distance?
A magnet can exert a force over a distance because of its magnetic field. The field extends around the magnet and interacts with other magnetic materials or objects at a distance, causing them to be attracted or repelled. This force is the result of the alignment of magnetic moments within the material.
How is the wheel and axle useful?
It lightens the amount of force you have to exert to travel over a distance.
