Yesterday,Tom saw his sister getting an electric shock(触电).He was afraid but remembered what the teacher taught him when an electrical accident happens.He wanted to save his sister but he didn't touch her.He knew if he touched her,he might get shocked too.However,he coul...
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So, you're going to be in pain, blind, and unable to escape as you begin to die. Trending now What Happens To Your Body When You Die In A Plane Crash Read Even Breathing Will Burn You Most people think of breathing steam as therapeutic and relaxing - not so much when you'...
Electric shock accidents are most common onlow-voltage systemsand are usually subdivided into two categories of direct contact and indirect contact shocks. A direct contact shock occurs when conductors that are meant to be live, such as bare wires or terminals, are touched. An indirect contact sh...
Today, I’d like to talk about what happens when celebrity role models get behind healthyhabits, but at the same time promote junk food. 出自-2016年12月听力原文 The third element of love in Sternberg’s theory is what he calls decision commitment, the decision that one is in a love rela...
The first question to ask is, “What happens if you reverse the hierarchy?” In the Challenger case disaster would have been averted by simply asking Christa McAuliffe (or one of her high school students) to weigh in. In Joao’s case, any student studying physics could be asked whether ...
When you're struck by lightning, it's incredibly hot, but it happens so quickly that the heat usually doesn't do much more than cause all water on you to evaporate, your body hair to singe, and parts of your body to burn a bit. However, in rare cases, the electrical c...
What is the function of the round third prong in a modern household electric plug? Explain polyphase current? What happens when you plug more equipment into a power board in terms of its resistance and current. Explain. Explain what is electric potential and its basic properties. ...
What happens if a power supply draws too much current? What is the direction of the flow of conventional current? How is AC electrical power generated? What affects the brightness of a bulb current or voltage? Explain the basic concept of electric current. ...
I used to joke that you are not a real engineer until you’ve lightly shocked yourself at least three times. Accidental shocks may be just fine at low DC voltage, but they are extremely dangerous when working with high voltage/high current sources. Anytime a power source experiences a short...