Category: Physics

Is wattage important for hair dryer? Wattage does matter, but only to an extent: The amount of power put in, the more power you get out. While a high power or salon dryer uses more energy, that’s not necessarily the best form of measurement in terms of quality. A blow dryer may use high wattage […]

How long would it take if the sun exploded? around 8 minutes How much longer will the world last? This is expected to occur between 1.5 and 4.5 billion years from now. A high obliquity would probably result in dramatic changes in the climate and may destroy the planet’s habitability. Which IT technology is most […]

How do you calculate GPE? So to get the GPE of an object you need a formula, the formula is MASS X GRAVITY X HEIGHT (M X G X H). How does speed affect kinetic energy? It turns out that an object’s kinetic energy increases as the square of its speed. A car moving 40 […]

Where in the body are new blood cells made? Red blood cells are formed in the red bone marrow of bones. Stem cells in the red bone marrow are called hemocytoblasts. They give rise to all of the formed elements in blood. If a stem cell commits to becoming a cell called a proerythroblast, it […]

What is the hypothesis of a research paper? A research hypothesis is a statement of expectation or prediction that will be tested by research. Before formulating your research hypothesis, read about the topic of interest to you. Do all research papers have a hypothesis? Not all studies have hypotheses. Sometimes a study is designed to […]

Can you go to the top of the Sears Tower? The Skydeck is open on a limited ticket basis Offering spectacular views spanning up to four states and The Ledge, a glass balcony extending four feet outside the 103rd floor of Willis Tower! How much does the Sears Tower sway? The average sway of the […]

Why is the lower fixed point of Fahrenheit is 32? On the Fahrenheit scale, the melting point of water is 32°F and the boiling point is 212°F (at standard atmospheric pressure). This puts the boiling and freezing points of water 180 degrees apart. Therefore, a degree on the Fahrenheit scale is ​1⁄180 of the interval […]

What is the difference between freezing and melting? Solids and liquids can be changed from one state to another by heating or cooling. Heat melts a solid and turns it into a liquid. Cooling freezes a liquid into a solid. What is sublimation solidification? (d) Solidification: The process of change of matter from the liquid […]

Does Venus have CO2? Venus today is a hellish world. It has a crushing carbon dioxide atmosphere 90 times as thick as Earth’s. There is almost no water vapor. With no water left on the surface, carbon dioxide built up in the atmosphere, leading to a so-called runaway greenhouse effect that created present conditions. What […]

What is the equation for conservation of momentum used in inelastic collisions? Inelastic Collision Their total internal kinetic energy is initially 1 2 mv 2 + 1 2 mv 2 = mv 2 1 2 mv 2 + 1 2 mv 2 = mv 2 . The two objects come to rest after sticking together, […]