Answer:

Explanation:
Given
first stone mass is m
second stone mass is 6 m
distance traveled by first stone in 430 ms



Distance traveled by stone 2 in t=430-59=371 ms



velocity of first stone after t=0.43 s


velocity of second stone after t=0.371 s


Position of Center of mass of system



Velocity of COM



Answer:
Explanation:
Given
mass (m)= 20 kg
acceleration (a)= 10 m/s^2
Force (f)= m a
= 20 * 10
= 200 N
Explanation:
The balanced chemical equation is given as:
2H₂O₂ → O₂ + 2H₂O
А There are two peroxide molecules on the reactant side.
The statement is correct because the left hand side is the reactant side. We can read the reaction as;
2 molecules of hydrogen peroxide decomposed to given 1 molecule of oxygen gas and 2 molecules of water .
D Mass must be conserved so there are an equal number of molecules in the reactants and products.
E Mass must be conserved so there are an equal number of atoms in the reactants and products.
Since the chemical equation is balanced, choices D and E are correct. The reaction will have equal number of molecules and atoms on both sides of the expression.
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Answer:
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Explanation:
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