Category: Physics

What is the minimum size power conductors that are permitted to be run in parallel? Parallel conductor installations are covered in NEC 310.10(H) and are permitted for each phase, polarity, neutral, or grounded conductor in sizes 1/0 AWG and larger. Joining conductors in parallel is like having two or more smaller conductors connected at each […]

How much heat can a resistor take? The resistor is dissipating 400 mW, so its temperature rise will be about (400 mW)(200 °C/W) = 80 °C. If it’s on a open board on your desk, you can probably figure 25 °C maximum ambient, so the resistor could get to 105 °C. Note that’s hot enough […]

What do u mean by uniform circular motion? Uniform circular motion can be described as the motion of an object in a circle at a constant speed. As an object moves in a circle, it is constantly changing its direction. At all instances, the object is moving tangent to the circle. Nonetheless, it is accelerating […]

Is ultrasound tech school hard? Difficult but Worth the Effort It takes two years to complete, but the degree from a CAAHEP accredited program qualifies the sonography student to take the ARDMS exams. It is necessary to take required courses like physiology, anatomy, physics, sonography instrumentation and medical terminology. Which is the best ultrasound machine? […]

How do you heat up gold? Try using a propane torch to melt gold. The gold should be placed into a crucible. Be careful to bring the torch down slowly if you have fine powdered gold in the crucible because you could easily blow it around. With a torch, hold the flame well above the […]

What are the 4 parts of a comet? A comet is made up of four visible parts: the nucleus, the coma, the ion tail, and the dust tail. What are three comets? Astronomers have identified three main parts of a comet: the nucleus, coma and tail. What is the biggest part of a comet? nucleus […]

Is the Congo river dangerous? In a country with few paved roads, boarding an overcrowded boat on a treacherous river is a way of life. This weekend, journeys on the dangerous waterways stole the lives of up to 270 people. What country is called the heart of Africa? Malawi What language is spoken in Malawi […]

How do you stop a fission chain reaction? In the operation of a nuclear reactor, fuel assemblies are put into place and then the control rods are slowly lifted until a chain reaction can just be sustained. As the reaction proceeds, the number of uranium-235 nuclei decreases and fission by-products which absorb neutrons build up. […]

What is the importance of formulating a hypothesis? A hypothesis enables researchers not only to discover a relationship between variables, but also to predict a relationship based on theoretical guidelines and/or empirical evidence. Developing a hypothesis requires a comprehensive understanding of the research topic and an exhaustive review of previous literature. What is a broader […]

What is the net force of a rock falling at constant terminal velocity? Objects falling through a fluid eventually reach terminal velocity . At terminal velocity, the object moves at a steady speed in a constant direction because the resultant force acting on it is zero. Why does a parachutist does not fall with constant […]