Category: Engineering

Is drag equal to weight? When drag is equal to weight, there is no net external force on the object and the vertical acceleration goes to zero. With no acceleration, the object falls at a constant velocity as described by Newton’s first law of motion. Which reaches terminal velocity first? Both elephant and feather weigh […]

Does thermal conductivity depend on temperature? The effect of temperature on thermal conductivity is different for metals and nonmetals. In metals, heat conductivity is primarily due to free electrons. In alloys the change in electrical conductivity is usually smaller and thus thermal conductivity increases with temperature, often proportionally to temperature. What is the temperature dependence […]

What is the difference between a job and a profession Brainly? A job is the work you do and a profession includes the environment you work in. A job is the work you do and a profession includes your career field. What is the difference between a job and a profession quizlet? Terms in this […]

What is the velocity profile for laminar flow? The laminar velocity profile of the fluid flow governed by the pressure gradient is parabolic. where R is the tube radius, v(max) is the maximal velocity or the centerline velocity of the velocity profile. It is assumed that there is only one velocity component in the tube […]

What are the parts of valve? Components body. ports. seat. stem. disc when valve is open. handle or handwheel when valve is open. bonnet. packing. What is the function of spring in a control valve? A valve spring is placed around the stem of a valve and held in place by a retainer. Its main […]

What is wet steam dry steam and superheated steam? Pressure-Temperature Relationship of Water & Steam Saturated (dry) steam results when water is heated to the boiling point (sensible heating) and then vaporized with additional heat (latent heating). If this steam is then further heated above the saturation point, it becomes superheated steam (sensible heating). What […]

What is the function of a damper? A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate […]

Can exchange mass and energy with the surroundings? An open system can exchange both energy and matter with its surroundings. The stovetop example would be an open system, because heat and water vapor can be lost to the air. An isolated system is one that cannot exchange either matter or energy with its surroundings. What […]

How do you calculate mass from bulk density? The wet bulk density will be the total mass divided by the total volume. The solid mass is 375 kg and the mass of the water is 0.15 * 375 = 56.25 kg, for a total mass of 431.25 kg. So the wet bulk density is 431.25/0.75 […]

What does an emergency action plan do? An emergency action plan (EAP) is a written document required by particular OSHA standards. [29 CFR 1910.38(a)] The purpose of an EAP is to facilitate and organize employer and employee actions during workplace emergencies. What are the three main steps in an emergency action plan? 3 Steps to […]