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Physics

Calculate Force F for m = 10 kg, a = 9.8 m/s²

Step-by-Step Explanation

1. 1. Apply Newton's Second Law of Motion formula: F = m · a (F: Force, m: Mass, a: Acceleration)
2. 2. Substitute the given values (mass m = 10 kg, acceleration a = 9.8 m/s²): F = 10 · 9.8
3. 3. Compute to get the final net force: F = 98 N (Newtons)

Chemistry

Balance: H₂ + O₂ → H₂O

Step-by-Step Explanation

1. 1. Count the atoms of each element on both sides: Reactants H=2, O=2 / Product H=2, O=1
2. 2. Balance Oxygen atoms by multiplying H₂O by coefficient 2: H₂ + O₂ → 2 H₂O (Product H=4, O=2)
3. 3. Balance Hydrogen atoms by multiplying reactant H₂ by coefficient 2: 2 H₂ + O₂ → 2 H₂O
4. 4. Verify atom counts on both sides: H=4, O=2. The chemical equation is successfully balanced.

Biology

Phenotypic ratio of Monohybrid Cross: Aa x Aa

Step-by-Step Explanation

1. 1. Identify the gametes produced by heterozygous parents (Aa): A and a for each parent
2. 2. Construct a Punnett Square to obtain offspring combinations: AA, Aa, aA, aa
3. 3. Calculate offspring genotypic ratio: AA : Aa : aa = 1 : 2 : 1
4. 4. Apply dominance rules to find the phenotypic ratio: Dominant (AA, Aa) : Recessive (aa) = 3 : 1

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