Category: Physics

Why is Freud so important in psychology? Sigmund Freud (1856 to 1939) was the founding father of psychoanalysis, a method for treating mental illness and also a theory which explains human behavior. Freud believed that events in our childhood have a great influence on our adult lives, shaping our personality. Who was Sigmund Freud and […]

What animals use the Doppler effect? “In fact, the bat species studied (horseshoe bats and Old World Roundleaf bats) can move their ears so fast that Doppler shifts of around 350 Hz can be created. This is about seven times larger than the smallest Doppler shift the animals haven been shown to be able to […]

What temperature will kill humans? Once the temperature is below 68°F, death is almost certain. Even a warming up too fast could be dangerous: in cold water blood vessels in the skin and in the extremities dilate and blood pressure decreases rapidly, so there is a threat of a circulatory collapse. At what temperature would […]

What energy is in a moving skateboard? kinetic energy Why is Ollie so hard? Unlike a soccer ball in mid-flight, a skateboard mid-ollie is being actively steered. This is exactly what makes doing an ollie so hard. It’s not enough to get the skateboard up into the air – you also have to steer it […]

Does Reynolds number increase with velocity? An increase in diameter without a change in velocity also increases Re and the likelihood of turbulence; however, the velocity in vessels ordinarily decreases disproportionately as diameter increases. Both factors increase the Reynolds number, which increases the likelihood of turbulence. What is the range of Reynolds Number? Actually, the […]

What kind of bonding is hydrogen peroxide? CHEBI:16240 – hydrogen peroxide. An inorganic peroxide consisting of two hydroxy groups joined by a covalent oxygen-oxygen single bond. Hydrogen peroxide is a chemical compound with the formula H2O2. In its pure form, it is a very pale blue liquid, slightly more viscous than water. What is the […]

What are the 3 ways energy is used? Heating and cooling our homes, lighting office buildings, driving cars and moving freight, and manufacturing the products we rely on in our daily lives are all functions that require energy. How do we store energy? Energy can be stored in a variety of ways, including: Pumped hydroelectric. […]

Which has more energy K or L? Hence energy levels increase as the distance from the nucleus increases. There are many shells around the nucleus which are arced as K, L, M; N, and so on….M SHELL. Shells Electrons K 2 L 8 M 18 Total Electrons 28 Why K shell has less energy than […]

Can you take a picture of an item and find it online? The Google Goggles app is an image-recognition mobile app that uses visual search technology to identify objects through a mobile device’s camera. Users can take a photo of a physical object, and Google searches and retrieves information about the image. Recognize and offer […]

How do you make a sucrose density gradient? Sucrose density gradient solutions Prepare 150 mL of 1X PE buffer containing 0.1% (w/v) Triton X-100. Prepare the sucrose solutions: To prepare a 20% (w/w) solution: i. Zero a container on a balance. ii. Add 10 g sucrose to the container. iii. Add the PE/Triton solution slowly […]