Need help with all four please and thank you <3
1 answer:
According to newton's second law of motion;
Force (weight of an object) = Mass × Acceleration
Weight of a 31kg object = 31kg × 10m/s² = 310N
Acceleration due to gravity on moon is less than that on earth so objects have little weight on moon than on earth.
The weight of a 31kg onject on moon is therefore × 310N ≈ 51.7N
The mass of the object on earth is 31Kg.
In the formula; Force = Mass × Acceleration
Mass here is a constant on the acceleration changes so:
The mass of the object on moon is also 31Kg.
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Answer:
4186 Joules
Explanation:
The specific heat capacity of a substance is defined as the amount of heat needed to raise the temperature of 1 kg of the substance by 1 Kelvin. In formula,
where
Q is the amiunt of heat needed
m = 1 kg is the mass
is the variation of temperature of the substance
For water, the specific heat capacity is . This means that the heat energy required to raise 1 kg of water by 1 K is exactly 4186 J.