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Anonymous users2024-02-05The salesperson said that the microwave oven is very energy-efficient, that is, it has a high energy efficiency ratio.
The customer said that the "burning of the insurance" was caused by the excessive current caused by too many electrical appliances working at the same time in the circuit, so he knew that the microwave oven was powerful.
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Anonymous users2024-02-04The salesperson said that the microwave oven is very energy-efficient, which means that it has high thermal efficiency, that is, more heat energy is converted with the same electrical energy.
The customer said that the microwave oven was very electricity-intensive, and that his microwave oven "burned the insurance" as soon as it was turned on.
It is said that its rated power is large, and the rated current is exceeded.
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Anonymous users2024-02-03The salesperson said that the microwave oven is very energy-efficient, and it doesn't cost much electricity to heat food with it.
When the power is equal, the time is short and less electricity is consumed.
The customer said that the microwave oven consumes a lot of electricity, and his microwave oven "burns the fuse" as soon as it is turned on, and the power is high, and it is easy to make the fuse segment.
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Anonymous users2024-02-02This is a textbook exercise.
Hehe, we've been reviewing it for a while.
The salesman said this in terms of the amount of electricity consumed.
The customer is from the power point of view, the reason why the "burn insurance" is because there are too many electrical appliances working at the same time in the circuit, resulting in excessive current.
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Anonymous users2024-02-01The angle that the salesperson is talking about is that the microwave takes a short time to heat the food.
The customer said that the angle is from the power of the microwave oven, the microwave oven has a large power.
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Anonymous users2024-01-31Of course, the salesperson said so, because she was a salesperson; A customer is a customer, and everything has to be considered! Hehe.
Scientific terminology: can be used.
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Anonymous users2024-01-301. First of all, it is necessary to explain what the power of the microwave oven is.
2. Explain the time when the microwave oven is used.
3. Power time electricity consumption (kWh).
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Anonymous users2024-01-29Group 5: Iron Stand. Alcohol burner. Asbestos nets. 200 ml beaker. Alcohol thermometer. Cardboard. Pieces of glass. Once.
Pedagogical process design.
1 Board book design.
Evaporation: A vaporization phenomenon that can occur at any temperature.
State change: liquid gaseous.
Evaporation Energy Change: Endothermic.
Influencing factors: temperature, liquid surface area, wind speed.
Boiling: A violent vaporization phenomenon that occurs at a certain temperature.
Boiling point: The temperature at which a liquid boils (different liquids, different boiling points) All gases can be liquefied when the temperature drops low enough.
Liquefaction state change: gaseous liquid state.
Energy Change: Exothermic, Influencing Factors: Temperature Drop, Volume Compression.
Vaporization endothermy, liquefaction exothermic, regular application. Applications for substances with low boiling points.
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Anonymous users2024-01-28The physical quantities that need to be measured are: the student's weight m, the time t used to do 6 pull-ups, the student's arm length h power = work The time The work done by the student to attack the shutting is: mg·2h This is the work of a single cracking, because it has moved up and down 6 times, so the work of the total lead ridge is:
12mgh power = 12mgh t
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Anonymous users2024-01-271 Measure Xiao Ming's body weight m, record the vertical displacement x of the body (up or down) during the standard action, and record the total time of 6 standard pull-up movements at a constant speed t2 p=(2x6mg) t Because doing 6 standard pull-up movements at a continuous and uniform speed, whether the upward or downward pull force is equal to gravity, 2x6mg
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Anonymous users2024-01-261, the student's mass m, the time required to do 6 gauge Dong Chunyu pull-ups to the Na section on the moving Mori Yuzuo t at a continuous and uniform speed, the student's arm length h, 2, p=12mgh t
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Anonymous users2024-01-25The quality of the classmate m, the time required to do 6 standard pull-ups in a row, the arm length h power of the classmate is 12mgh t
Respect is a virtue. Dale Carnegie, the American master of relations, once said, "Show respect for other people's opinions, don't say anything." >>>More
If both balls of equal volume A and B float on the water, then the buoyancy received by the two balls of A and B is equal to the gravitational force received by A and B respectively, but A and B are only equal in volume and do not know the density, so the amount of buoyancy they receive cannot be determined, so D is chosen. >>>More
Because the total weight of the iron, people, and ship exceeded the displacement of the ship, and the time for two trips was not enough, the way to consider reducing the load was to put the iron in the water and the ship to drag it away. Can it be implemented? Let's verify first, consider the extreme case, that is, all the iron is put into the water, and the load is the least at this time, that is, 65*, and then consider the critical value. >>>More
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Oh, then let me say, when we only connect the power supply in the circuit, this electrical appliance, switch such a simple series circuit, the power supply voltage remains the same, the actual voltage is the rated voltage, you can know according to P is equal to the square of U divided by R, the resistance of the electrical appliance is determined on the appearance, will not change, the resistance is certain, and according to P=UI, it can be known that I=U R is Ohm's law, which is a known and invariant condition.