Category: Physics

Why is there a gap between telephone wires? Solution: (a) Most telephone wires are made out of copper, which contracts with drop in temperature and hence breaks in winter if it becomes too tight between the poles. (c) The gaps are left between the successive rails for making space for their expansion when there is […]

What things weigh 20 grams? The DelFly Explorer, a battery-powered flying drone with stereo vision flight, weighs 20 grams. For baking, 1/4 cup of cake flour is equal to 20 grams. Twenty grams is equivalent to approximately 0.7055 ounces. How much does a socket weigh in grams? I’ll weigh one right now, hang on. Edit: […]

What is lines and angle? Angle. An angle is formed when two lines intersect each other. We represent an angle by the symbol ∠. An angle involves two legs and one common vertex at which two lines meet. For example: ∠AOD is formed when line AB and CD intersect with each other. Which angles are […]

What are the two types of flame cutting torches called? There are two types of welding and cutting torches commonly used. They are the positive-pressure type (also known as an equal-pressure type or medium-pressure type torch), and the injector type. Does oxygen or acetylene light first? We recommend closing the oxygen valve first whenever turning […]

Which planet is responsible for jealousy? Natal Pluto What planet is for money? Two most important planets which bring money (planets who rule wealth and money) are Jupiter and Venus. In astrology, these two planets are called the dhan-karakas (indicators of wealth and prosperity). Which planet is responsible for success? Planetary combinations for success, fame […]

What is power Doppler used for? Definition: power Doppler. An ultrasound technique that is used to obtain images that are difficult or impossible to obtain using standard color Doppler and to provide greater detail of blood flow, especially in vessels that are located inside organs. What is a Doppler device used to measure? A Doppler […]

Which is the best alternative energy source? Although there are many types of energy, the most efficient forms are renewable: hydro-thermal, tidal, wind, and solar. Solar energy has been proven to be the most efficient and effective among renewable energy sources for home and commercial use. What is the number one killer of birds? cats […]

What type of sonography pays the best? Here are the highest-paying specialties for an ultrasound technician: Vascular sonography. OB/GYN sonography. Cardiac sonography. Pediatric cardiac sonography. Neuro sonography. Is sonography a stressful job? Diagnostic medical sonographer was rated as the least stressful job. The position involves using medical imaging equipment like ultrasound machines. The second-least stressful […]

Should you cross your legs when doing pull-ups? Pull-up Mistakes: Crossed Legs Crossing your legs is also one of the pull-up mistakes. This mistake is related to pull-up mistake 3. Unknowingly, you could do this when you hang on a bar that is too low for you. You know it is too low if you […]

Is yellow lightning real? Lightning also can take on a range of colors, depending on conditions in the clouds and in the air. Yellow or orange lightning occurs when there is a large concentration of dust in the air. White lightning is a sign of low humidity or a little amount of moisture in the […]