Category: Physics

What is karst landform? Karst is a type of landscape where the dissolving of the bedrock has created sinkholes, sinking streams, caves, springs, and other characteristic features. Karst is associated with soluble rock types such as limestone, marble, and gypsum. Which is the largest karst landform? Larger karst landforms include dry valleys and gorges, carved […]

What is the value of ψ? Ψ-values (sometimes called Psi values) measure the heat loss at junctions between thermal elements – for example where a floor joins an external wall – and around openings. Lower Ψ-values mean less heat is lost through non-repeating thermal bridges. Can expected value be more than 1? There’s no problem […]

How do you make an inequality sign on a keyboard? In Windows, press the Num Lock key so that it does not function as a cursor pad. To type ≤, hold down the Alt key, type 2264 on the NumPad, then release Alt. To type ≥, hold down the Alt key, type 2265 on the […]

What is the success rate of gamma knife surgery? Gamma Knife radiosurgery is nearly 90 percent successful in killing or shrinking brain tumors or stopping their growth. And it doesn’t hurt or require anesthesia. Treatment takes just one session, and patients can return to normal activities almost immediately. How long does it take Gamma Knife […]

What is the basis of evolution Class 10? Evolution by Stages : Evolution of complex organs have taken place bit-by-bit over generations. For example eye, feathers of birds have evolved because of survival advantage of intermediate stages. Thus changes in DNA during reproduction are the main cause of evolution. What is basic concept of evolution? […]

What can you taste in a storm? —Oh, ozone Before the rain begins, one of the first odors you may notice as winds pick up and clouds roll in is a sweet, pungent zing in your nostrils. That’s the sharp, fresh aroma of ozone—a form of oxygen whose name comes from the Greek word ozein […]

What conclusion can you draw based on the results of your experiment? Answer. The conclusions that you can make from your experiment is how the dependent variable reacted with your independent variable. If your dependent variable reacted like that of your hypothesis, then you must not reject your hypothesis. What three things should your conclusion […]

What should I say to students? 50 Things You Can Say To Encourage A Child Thumbs up. You’re on the right track now. You’ve worked so hard on that. I heard you say how you feel. That’s great, Oh, that turned out very well. That’s coming along nicely. I’m proud of the way you worked […]

Can warships detect submarines? Passive sonar search is a more refined, tactical, and skillful approach to submarine detection. Modern warship construction has given the surface navy an ability to quietly prowl the seas without the concerns of long-range passive counter detection. How do submarines get air underwater? Oxygen is typically supplied to the submarine from […]

Do sound waves ever die? The godfather of radio technology decided that no sound ever dies. It just decays beyond the point that we can detect it with our ears. Any sound was forever recoverable, he believed, with the right device. Does sound travel faster in water or steel? In fact, sound waves travel over […]