Category: Physics

What materials can you use for magnetic particle inspection? Common metallic materials like nickel, iron, steel, and cobalt are all ferromagnetic and perfect candidates for magnetic particle testing. Where is magnetic particle testing used? Magnetic particle inspection is used for detecting defects (discontinuities in surfaces and shallow subsurfacaes) in ferromagnetic materials. By magnetization of the […]

Is selective coordination required? Selective coordination is required for systems related to life safety (as defined in the NEC), and is achieved when an overcurrent on a circuit is interrupted and only the closest upstream device opens such that only the section of the electrical system with a problem is taken offline. What is selective […]

What if there is two medians? If there is an even number of numbers add the two middles and divide by 2. The result will be the median. How do you get rid of mean? How to Find the Mean. The mean is the average of the numbers. It is easy to calculate: add up […]

What is the treatment when cell division goes wrong? Medicines that are used to treat cancer are sometimes aimed at killing cells that are rapidly dividing by mitosis. They inhibit the synthesis or function of DNA – this type of treatment is called chemotherapy. What will happen if mitosis go wrong? If the process of […]

What are the advantage of rotation magnetic field? The advantages of rotating field system are given below. The DC excitation voltage is low and it is very easy to insulate. This intern reduces the size of the machine. c. Out put current can be taken directly from the fixed terminals on the stator. How can […]

How do you find the internal diameter? Calculating the internal diameter depends on the outside diameter and the thickness of the outer circle. Find the total diameter of the object in question by taking a measurement from the outside wall of one side (the point of origination) straight across to the outside wall of the […]

What is the charge of so4? -2 What is the charge of cro4? What is the formal charge of S in SO4? +2 Why does sulfate have 4 Oxygens? Sulfate is a polyatomic ion with 1 sulfur (6 valence electrons), 4 oxygens (4 x 6 valence electrons = 24 e-) and a charge of -2 […]

What is B in a sine function? The value B is the number of cycles the graph completes in an interval of from 0 to 2π or 360º. The value B affects the period. The period of sine and cosine is. . When 0 < B < 1, the period of the function will be […]

Would base isolators be able to protect a building if the ground moves up and down? It is a collection of structural elements which should substantially decouple a superstructure from its substructure that is in turn resting on the shaking ground, thus protecting a building or non-building structure’s integrity. Contrary to popular belief base isolation […]

What are protective strategies? Protective behaviour strategies. Help the child identify who they can talk to if they don’t feel safe. Make sure the child knows what to do if they are in an unsafe situation. Kids should have their own safe place in the house – a place that is ‘theirs,’ where they can […]