Answer:
ok so youll tell me when you have problems
Answer:
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Explanation:
The definition is a nuclear reactor that generates more fissile material than it consumes.
Given: The mass of stone (m) = 0.5 kg
Raised from heights (h₁) = 1.0 m to (h₂) = 2.0 m
Acceleration due to gravity (g) = 9.8 m/s²
To find: The change in potential energy of the stone
Formula: The potential energy (P) = mgh
where, all alphabets are in their usual meanings.
Now, we shall calculate the change in potential energy of the stone
Δ P = P₂ - P₁ = mg (h₂ - h₁)
or, = 0.5 kg ×9.8 m/s² ×(2.0 m - 1.0 m)
or, = 4.9 J
Hence, the required change in the potential energy of the stone will be 4.9 J
Answer: Throwing some cargo out of the boa
Explanation:Pushing its mast, Pushing the front of the boat, Pushing another passenger are the forces in internal frame. Forces in the internal frame will not push the boat.
Throwing some cargo out of the boat will create force in external frame of the boat. This external force will push the boat and boat starts moving.
