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The basic unit of length commonly used in the world
The Si basic units of the international system of units are meter, kilogram, second, ampere, Kelvin, mole and candela
Basic unit of length: M
In the international system of units, the unit of length is______ , common symbols______ A unit larger than it is______ What are the smaller units______ 、______ 、______ 、______ And______ ．
In the international system of units, the unit of length is meter, which is usually indicated by the symbol M. the larger unit is km, and the smaller units are DM, cm, mm, μ m and nm
RELATED INFORMATIONS
- 1. In the international system of units, there are seven basic units. Which of them are involved in mechanics?
- 2. On the international system of units in Physics~ The international system of units is a__________ It includes the system of units in all fields of measurement___________ Such as meter, kilogram, second, and the formula derived from them_______ .
- 3. What is the symbol of electrolytic capacitor in the circuit diagram?
- 4. What are the seven basic physical quantities in the international system of units
- 5. In the international system of units, the basic unit of mechanics is () A. N、m、sB. N、kg、sC. kg、m、sD. N、kg、m
- 6. The distance that a moving object passes through is called the distance. It can be represented by symbols. In the international system of units, its main unit is the distance
- 7. The relationship between electric heating and electric power: electric heater: q = W. other electrical appliances: Q () w to protect the safety of equipment, prevent excessive current, prevent short circuit, To prevent poor contact, what else to prevent
- 8. Power formula of pure resistance circuit and non pure resistance circuit
- 9. A question about the complete square formula on the second day of junior high school is going to be urgent tonight Given (2006-a) (2004-A) = 2005, find the value of (2006-a) & sup2; + (2004-A) & sup2
- 10. Several problems of complete square formula in Mathematics The second power of X + 4Y + () = the second power of (x-2y) The second power of (a + b) - (a-b) The second power of (a-b) = the second power of (a + b) + () The second power of (4m + ()) = the second power of 16m - 4m + () The second power of () is the second power of M + 8m + 16 The second power of (- 5y-2x) = () The second power of (a + 2b) + () = the second power of a + the second power of 2Ab + the second power of 4B If x to the second power + 2x = 1, then (x + 1) to the second power = ()
- 11. 16. The symbol of specific heat capacity unit is correct A J/kg·K B J·Kg-1·K-1 C J/kg·K-1 D J/kg/K What, why, mainly why
- 12. What is the material with the largest specific heat capacity in the world?
- 13. What is the unit and significance of specific heat capacity?
- 14. In the international system of units, the unit of time is seconds (s). What are the larger units? There are four vacancies altogether
- 15. For example, "L" R
- 16. Concept and concept of physical symbols The concept and concept of MV and Ma
- 17. Thermal symbol What is the symbol of heat energy?
- 18. P = UI is used to calculate electric power! If u is not the rated voltage, can it still be used? A consumer marked with 220 V and 40 W is connected to the circuit with 110 V voltage, and the resistance remains unchanged. Why can't P = UI be used to solve this problem? Why can r = u ^ 2 / P, P = u ^ 2 / R be used only? And for example, 1000 watt hour is the small consumption of 1 kW consumer in one hour? Why does 500 W consumer consume a lot of J in one hour?
- 19. On the problem of physical electric power formula, because r = u / I, so u = RI, why P = RI * I = I & # r because P = UI On the problem of physical electric power formula, because r = u / I, u = RI Why is p = RI * I = I & # r because P = UI Why is p = u * (U / R) = u & # / r because P = UI How to put these formulas into the topic
- 20. Unit and symbol of centigrade temperature What are the differences