1. List five exothermic reactions that are going on around you. (10 points)
1 answer:
Answer :
Exothermic reactions are those reactions in which a system releases its heat energy to surroundings whereas during endothermic reactions a system absorbs heat energy from surroundings.
Explanation :
Five exothermic reactions that are going on around us
a) Making of ice cubes
b) Rusting of iron
c) Nuclear fission reaction
d) Cellular respiration
e) Condensation of water vapor to form rain.
Following are some endothermic reactions;
1) Photosynthesis
2) Mixing of water in Ammonium Nitrate
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Answer:
Explanation:
The electric flux through a certain surface is given by (for a uniform field):
where:
E is the magnitude of the electric field
A is the area of the surface
is the angle between the direction of the field and of the normal to the surface
In this problem, we have:
is the electric field
L = 2.0 m is the side of the sheet, so the area is
, since the electric field is perpendicular to the surface
Therefore, the electric flux is
Answer:
F' = F
Explanation:
The gravitational force of attraction between two objects can be given by Newton's Gravitational Law as follows:
where,
F = Force of attraction
G = Universal gravitational costant
m₁ = mass of first object
m₂ = mass of second object
r = distance between objects
Now, if the masses and the distance between them is doubled:
<u>F' = F</u>