Explanation:
where is the statement Boss??
It is the symbol used to represent nano meters.
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Answer:
The correct answer is
option 1. a relatively high number of collisions between reacting particles are effective.
Explanation:
Activation energy refers to the amount of energy which is required by the reacting substances to take part in chemical reaction. If the activation energy is higher, the molecules moves very fast and reaction does not occur. Chemical reaction occurs when the reactant possess low amount of energy.
<h2>Work done = mgh </h2>
Explanation:
- In this case, while lifting the book we are working against the force of gravity.
Using the Newton's laws, we can find the force F required for lifting the book having mass (m) and acceleration due to gravity (g) that is ;
and, the change in the position of the book that is Δx (Height)
→ Δx = Final position - Initial position
which is only the height, then the amount of work done will be calculated by :
W= mgh
m = Mass of the Body
g = Acceleration due to Gravity
h = Height of Body being displaced