Category: Engineering

What were the three compromises regarding slavery? The three major compromises were the Great Compromise, the Three-Fifths Compromise, and the Electoral College. What was the North’s position on slavery? American attitudes to slavery were complex with much disagreement; however, before emancipation, many northerners felt guilty about slavery and white southerners expected federal protection of the […]

What causes tides high and low? They are caused by the gravitational forces exerted on the earth by the moon, and to a lesser extent, the sun. When the highest point in the wave, or the crest, reaches a coast, the coast experiences a high tide. When the lowest point, or the trough, reaches a […]

How do you pass a variable from one class to another? You can create the object of one class and using this object you call other class variables and methods, but make sure the accessiblity will be as public. We can use interface class A and by implementing A into B, can use the variable […]

Why Does entropy increase during a spontaneous process? If heat flows into the surroundings (i.e., when a reaction is exothermic) the random motions of the molecules in the surroundings increase. Thus, the entropy of the surroundings increases. The second law of thermodynamics states that the total entropy of the universe always increases for a spontaneous […]

What is a Class 3 thread? Class 3 threads are tight tolerance threads that have no allowance and have very tight tolerances. Class 3 threads are often specified for tight tolerance fastener applications in critical use situations where safety and strength are a primary concern, such as the aerospace industry. What are 3 types of […]

How do you calculate ice melting rate? Using the equation for a change in temperature and the value for water from Table 1, we find that Q = mLf = (1.0 kg)(334 kJ/kg) = 334 kJ is the energy to melt a kilogram of ice. This is a lot of energy as it represents the […]

Is reliability a probability? Reliability is defined as the probability that an item will perform a required function without failure for a stated period of time. Another way to state is that It’s a measure of how long it takes for a network (or a system) to fail. So why Reliability is defined in terms […]

How does film boiling differ from nucleate boiling? Film boiling is a post critical heat flux (CHF) regime with a high surface temperature. Nucleate boiling is a type of boiling which occurs when the surface temperature is hotter than the saturated fluid temperature by a certain amount. In this type of boiling, the heat flux […]

What is a glass cullet? Crushed glass also known as glass cullet refers to waste glass produced as a result of breakage and rejection on quality control grounds during the manufacturing process. What is a Cullet? : broken or refuse glass usually added to new material to facilitate melting in making glass. What can be […]

Where do most pedestrian fatalities occur? Most pedestrian deaths occur in urban areas, at non-intersection locations, and at night. Where do more than 50 percent of pedestrian motorist crashes occur? More than 50 percent of the combined total of fatal and injury crashes occur at or near intersections. In what situations are pedestrians most likely […]