Flammability because density is stating about magnesium something with melting point and magnetism but Flammability is stating how easily can it be changed into a new substance by using flame.
Answer:
The relationship is the normal force, that is equal to the product of the mass by gravity.
Explanation:
The friction force is defined as the product of normal force by the value of the coefficient of friction, in this way we have:
f = μ * N
Where:
f = friction force [N]
μ = friction coefficient
N = normal force [N]
On a flat surface, the normal force is equal to the weight of the body, this way we have:
N = m*g
Therefore:
f = μ * m * g
We can conclude that for a flat surface the friction force depends on the coefficient of friction, this is a value that depends on the surfaces in contact, and the weight of the body.
By definition we have to:
Where,
Pabs: absolute pressure
Patm: atmospheric pressure
Pg: gage pressure
The atmospheric pressure is constant and its value is:
Then, by clearing gage pressure we have:
Substituting values we have:
Answer:
If the absolute pressure of a gas is 550.280 kPa, its gage pressure is:
D. 448.955 kPa
Work done = force x distance
Work done = 50 x 2
Work done = 100J
PART A)
Heat released by iron = heat gain by water
now we have
PART B)
When endothermic changes takes place in the system then system absorbs the energy from its surrounding and keeps on cooling down
Due to this the observer will feel the cool down of the surface temperature and conclude that it is an endothermic reaction
PART C)
When a substance freezes its temperature do not change but if we will check the potential energy of molecules we can conclude that the system released its energy which is known as latent heat.
This will lead to the increase in its potential energy
And due to this decrease in latent heat the substance will freeze