Estimate the number of water molecules in person
The mass of a water molecule is 2.99 10-26 kg. If the mass of a person is 63 kg, estimate the number of water molecules in that person.
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A crate is pulled to the right with a force of 82 N, to the left with a force of 115 N, upward with a force of 565 N and downward with a force of 236 N. What is the magnitude and the direction of the net force on the crate?
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A 0.380 kg iron horseshoe that is initially at 580°C is dropped into a bucket containing 21.8 kg of water at 21.0°C. What is the final equilibrium temperature (in °C)? Neglect any heat transfer to or from the surroundings. Do not enter
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Suppose you were the first to measure the value of some physical constant experimentally. How would you provide an estimate of the experimental uncertainty?
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