Why do we use different temperature scales? They are used because of preference or convenience, not necessity. These scales came about historically when there were no standards to calibrate a thermometer against. The Fahrenheit scale used the temperature of the coldest thing then known for its zero, which was salty ice. When was the temperature […]
What are some examples of graphical user interface?
What are some examples of graphical user interface? Some popular, modern graphical user interface examples include Microsoft Windows, macOS, Ubuntu Unity, and GNOME Shell for desktop environments, and Android, Apple’s iOS, BlackBerry OS, Windows 10 Mobile, Palm OS-WebOS, and Firefox OS for smartphones. How do you create a graphical user interface? When designing GUIs, it’s […]
How does a basic carburetor work?
How does a basic carburetor work? The carburetor works on Bernoulli’s principle: the faster air moves, the lower its static pressure, and higher the dynamic pressure is. The throttle (accelerator) linkage does not directly control the flow of liquid fuel. Later engines used an early form of fuel injection known as a pressure carburetor. What […]
What is RFID technology and how does it work?
What is RFID technology and how does it work? RFID is a method of data collection that involves automatically identifying objects through low-power radio waves. Data is sent and received with a system consisting of RFID tags, an antenna, an RFID reader, and a transceiver. What are the advantages of RFID? Advantages of RFID RFID […]
Can superposition theorem be applied to a circuit containing one AC and one DC source?
Can superposition theorem be applied to a circuit containing one AC and one DC source? Another limitation of these methods is that the sources must all be of the same current type: ac or dc. The superposition theorem does not have this limitation, which makes it a valuable technique in electronic circuit design. The superposition […]
Why are STEM subjects important?
Why are STEM subjects important? STEM stands for science, technology, engineering, and mathematics. STEM is important because it pervades every part of our lives. STEM activities provide hands-on and minds-on lessons for the student. Making math and science both fun and interesting helps the student to do much more than just learn. Why is STEM […]
What is the opposition to the flow of electricity?
What is the opposition to the flow of electricity? electrical resistance: The opposition offered by an electrical conductor to the flow of a current through itself, resulting in a conversion of electrical energy into heat and radiation. The SI derived unit of resistance is the ohm. What is the opposition to the flow of electrons […]
What are the 4 economic goals?
What are the 4 economic goals? National economic goals include: efficiency, equity, economic freedom, full employment, economic growth, security, and stability. Economic goals are not always mutually compatible; the cost of addressing any particular goal or set of goals is having fewer resources to commit to the remaining goals. What are the goals of an […]
What is the order through which blood flows in vessels from the heart back to the heart?
What is the order through which blood flows in vessels from the heart back to the heart? Blood Vessels: Circulating the Blood Through the thin walls of the capillaries, oxygen and nutrients pass from blood into tissues, and waste products pass from tissues into blood. From the capillaries, blood passes into venules, then into veins […]
What are the defects that can be identified by NDT techniques?
What are the defects that can be identified by NDT techniques? This method allows for the detection of corrosion, misalignment, damage, cracks, and more. Visual testing is inherent in most other types of NDT as they will generally require an operator to look for defects. What is defect in NDT? Generally a defect can be […]