What properties do carbon nanotubes have? CNTs have outstanding heat conductivity, electrical conductivity, and mechanical properties. They are probably the best electron field-emitter possible. They are polymers of pure carbon and can be made to and manipulated using the recognized and extremely rich chemistry of carbon. Can you make carbon nanotubes at home? You probably […]
Why do bodies move in circular orbit?
Why do bodies move in circular orbit? Explanation of how objects under the influence of gravity move in orbits. A body in uniform circular motion undergoes at all times a centripetal acceleration given by equation (40). According to Newton’s second law, a force is required to produce this acceleration. What is the energy of orbiting […]
Does a resistor reduce voltage?
Does a resistor reduce voltage? A resistor has the ability to reduce voltage and current when used in a circuit. The main function of a resistor is to limit current flow. Ohm’s law tells us that an increase in a resistors value will see a decrease in current. To reduce voltage, resistors are set up […]
What is suction and discharge pressure of R410A?
What is suction and discharge pressure of R410A? What is the suction pressure of r410a? Suction pressure of an Air-Conditioner with R410A Refrigerants typically ranges between 115 Psig to 125 Psig when operated at an ambient temperature of 35 degC. The discharge pressure at this operating conditions hovers around 400 Psig. What is the recommended […]
Are lumps of rocks that orbit the sun?
Are lumps of rocks that orbit the sun? Meteoroids are lumps of rock or iron that orbit the sun, just as planets, asteroids, and comets do. Meteoroids, especially the tiny particles called micrometeoroids, are extremely common throughout the solar system. How much is a space rock? A prime specimen will easily fetch $50/gram while rare […]
Is solar wind visible?
Is solar wind visible? First proposed in the 1950s by University of Chicago physicist Eugene Parker, the solar wind is visible in the halo around the sun during an eclipse and sometimes when the particles hit the Earth’s atmosphere—as the aurora borealis, or northern lights. … How does solar wind affect humans? What is the […]
Are greenhouse gases harmful?
Are greenhouse gases harmful? Greenhouse gases have far-ranging environmental and health effects. They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution. Extreme weather, food supply disruptions, and increased wildfires are other effects of climate change caused by greenhouse gases. What is the main cause of […]
How does iodine exist in nature?
How does iodine exist in nature? Occurrence and distribution. Iodine is never found in nature uncombined, and it is not concentrated sufficiently to form independent minerals. It is present in seawater, but sparingly, as the iodide ion, I−, to the extent of approximately 50 mg per metric ton (0.0016 ounce per ton) of seawater. How […]
What is classed as an abrasive wheel?
What is classed as an abrasive wheel? 8 An abrasive wheel is usually defined as a wheel consisting of abrasive particles bonded together with various substances. Such wheels are tough, shock-resistant and self-dressing, and are most suited to non-precision applications, for example fettling and cutting off. What is abrasive wheel training? Abrasive Wheels training is […]
Can I get a BA in 2 years?
Can I get a BA in 2 years? A bachelor’s degree will typically take 4 years of sitting in class. But testing out of classes (credit by exam) and 8-week online classes are the turbo-boost needed to finish your bachelor’s degree in 2 years. You can take classes from anywhere at anytime. What is the […]