juniorjaramillo
08.11.2020 •
Physics
A ferry boat is 4.0 m wide and 6.0 m long. When a truck pulls onto it, the boat sinks 4.00 cm in the water, What is the weight of the boat?
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Ответ:
I can then answer it. There is no information to find the weight of the boat ;)
Ответ:
a balance and a beaker of water
Explanation:
- Mass is an intrinsec property of any physical object, and it represents somehow the "amount of matter" inside the object. It is measured in kilograms (kg), and the mass of an object can be measured by using a balance
- Volume is the "quantity of space" enclosed inside an object. It is measured in cube meters ().
The volume of a regular-shaped object can be measured by using a ruler, if we know the formula to calculate the volume of the shape of the object. However, a key has a very complex shape, so it is not possible to measure directly its volume. Therefore, it is possible to use a trick, by using a beaker full of water: by putting the key inside the beaker of water, the level of water inside the beaker raises, and the increase in volume of the water is equal to the volume of the key. The increase in volume of the water is easy to be measured, so in this way it is possible to measure the volume of the key.