What is the fastest plane in the world 2020? The Lockheed SR-71 Blackbird is the fastest jet aircraft in the world, reaching speeds of Mach 3.3–that’s more than 3,500 kph (2,100 mph) and almost four times as fast as the average cruising speed of a commercial airliner. Key elements of the SR-71’s design made this […]
What is the difference or similarity of calories and BTUS?
What is the difference or similarity of calories and BTUS? A heating calorie is defined as the amount of heat required to raise one gram of water by one degree Celsius. A Btu, or British Thermal Unit, is roughly the amount of heat produced when you burn one match. Technically, a Btu is the amount […]
Are 10mm and 3/8 the same?
What is mean by free fall a ball is dropped from the roof of a building it takes 10 seconds to reach the ground find the height of the building?
Could the UK have a major earthquake?
Could the UK have a major earthquake? The British Geological Survey said: “A magnitude 4 earthquake happens in Britain roughly every two years. We experience a magnitude 5 roughly every 10–20 years. Research suggests that the largest possible earthquake in the UK is around 6.5.” What is the safest place on earth? European countries dominate […]
Is entropy positive or negative?
Is entropy positive or negative? Entropy, S, is a state function and is a measure of disorder or randomness. A positive (+) entropy change means an increase in disorder. The universe tends toward increased entropy. All spontaneous change occurs with an increase in entropy of the universe. Why is entropy generation always positive? A measure […]
What does a dead testicle feel like?
Which type of cooling tower is best?
Which type of cooling tower is best? their design flexibility and cost effectiveness, make mechanical draft cooling towers ideally suited to most cooling duties and plant requirements. Unlike natural draft cooling towers, these towers use fans to circulate air through the tower. Propeller fans and centrifugal fans are most often used. What two types of […]
Which state is not a physical state of matter?
Is an LED a passive component?
Is an LED a passive component? Some examples of active devices include solenoids, relays, LEDs, and microcontrollers or any other integrated chip that uses an external supply voltage (or current) to perform work or the intended function. LEDs are light emitting diodes, and we state above that diodes are considered passive. What are the different […]