MrConman8460
23.10.2019 •
Physics
Which of the following is an si base unit for measuring length?
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Ответ:
Meter
Explanation:
International System of Quantities is given for the seven base quantities. Meter is one of them. The meter, symbol m, is the SI unit of length. It is defined as the distance covered by the speed of light in vacuum to be 299792458.
The SI base unit that is used for measuring length is meters. Some other units are kilometers, millimeters. etc.
Ответ:
Energy cannot be created or destroyed. This statement is known as law of conservation of energy, and it implies that whenever a certain form of energy does change, the loss of this form of energy must have converted into an another type of energy. A typical example is an object falling to the ground: initially, the object has gravitational potential energy. As the object falls down, it loses potential energy (since its altitude from the ground decreases), but it acquires kinetic energy (because its velocity increases). In this example, potential energy has converted into kinetic energy, but the total energy of the object has remained constant.