Understand what a magnetic field is. Learn the definition of magnetic field lines and understand how one can detect magnetic field lines using a compass. Related to this Question Why doesn't a magnetic force ALWAYS act on a particle which moves in a magnetic field?
What does this mean when dealing with banked curves: tan(theta) = (v^2)/(rg)? (i) Explain what is meant by magnetic field. (ii) Explain the right-hand rule for the magnetic force. What is elastic hysteresis? Explain how a...
The magnetic compass somehow makes use of Earth's magnetic field, much the way a standard compass does. 磁罗盘在某种程度上利用的是地球磁场,差不多像标准罗盘仪那样。 But to prove this, we would have to find some kind of magnetic sensory organ in birds. And we are not sure that we have....
2. The positively charged boat is blown downwind; its movement in Earth's magnetic field produces a Lorentz force. [In the fourth panel the boat has turned even more towards right and is back to the same height in the panel as the first two panels. The entire hull is still covered in...
How does a transformer work?A transformer is based on a very simple fact about electricity: when a fluctuating electric current flows through a wire, it generates a magnetic field (an invisible pattern of magnetism) or "magnetic flux" all around it. The strength of the magnetism (which has ...
These are what we call eddy currents. They're electric currents generated inside a conductor by a magnetic field that can't flow away so they swirl around instead, dissipating their energy as heat. One of the interesting things about eddy currents is that they're not completely random: they...
a还没有确切的证据表明:磁场是原子核中强相互作用力宏观上的另一种力的表现形式;但通过这个逻辑同样可以解释为什么宇宙间的中子星、黑洞具有超强的磁场的原因。 Does not have the accurate evidence to indicate that,The magnetic field is in the atomic nucleus the strong mutual action macroscopic on another ...
What is the function of the soft patch? A. Predicting five different sentences. B. Destroying the backgrouud magnetic field. C. Slowing the movements of throat muscles. D. Helping turn muscle movements into electrical signals.(C81. Which of the following is a suitable title for the text?
ainductors consist of a conducting wire wound into the form of a coil.when a current passes through the coil,a magnetic field is set up around it that tends to oppose rapid changes in current intensity. 感应器包括一个传导线创伤入coil.when的形式潮流通行证通过卷,磁场在倾向于反对在当前强度上...
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