Harder. Not compressible(unless using an extremely strong force). Non-metal have more of a chance of breaking than metals.
Answer:
The electromagnetic force
Explanation:
The electromagnetic force is one of the four fundamental forces of nature. Namely, they are:
- Electromagnetic force: it is the force exerted between electrically charged particles (and between magnetic fields). The force can be either attractive (if the two charges have opposite signs) or repulsive (if the two charges have same sign), and it acts over an infinite range.
- Gravitational force: it is the force exerted between objects with mass. It is always attractive, and it also has an infinite range of action. It is the weakest of the four fundamental forces.
- Strong nuclear force: it is the force that acts between protons and neutrons inside the nucleus, and it is responsible for keeping the nucleus together and preventing it from breaking apart (due to the electrostatic repulsion between protons)
- Weak nuclear force: it is the force responsible for certains nuclear decays, such as the beta decay, in which a neutron turns into a proton, emitting an electron and an antineutrino.
Answer:
The normal force acting on the block is 980 N.
Explanation:
Mass of box = 100 kg
Coefficient of static friction = 0.40
Coefficient of kinetic friction = 0.20
We need to calculate the normal force
We know that,
When the object is placed on the flat surface then the normal force is equal to the weight of the object.
So. The normal force = mass x acceleration due to gravity
Where, N = Normal force
m = mass of object
g = acceleration due to gravity
Hence, The normal force acting on the block is 980 N.
