Category: Physics

What are five interesting facts about helium? 10 Helium Facts The atomic number of helium is 2, meaning each atom of helium has two protons. Helium has the lowest melting point and boiling point of the elements, so it only exists as a gas, except under extreme conditions. Helium is the second-lightest element. What’s a […]

Which age group has the lowest self esteem? Self-esteem was lowest among young adults but increased throughout adulthood, peaking at age 60, before it started to decline. These results are reported in the latest issue of the Journal of Personality and Social Psychology, published by the American Psychological Association. How do you fix low self […]

How does a mechanical wave move? A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. Therefore, the oscillating material does not move far from its initial equilibrium position. Mechanical waves transport energy. This energy propagates in the same direction as the wave. Which wave has […]

What is relation between distance and displacement? Distance is a scalar quantity that refers to “how much ground an object has covered” during its motion. Displacement is a vector quantity that refers to “how far out of place an object is”; it is the object’s overall change in position. What is literary displacement? In its […]

Can AC run DC? You can use AC coils on DC circuits providing you apply enough DC voltage to draw the same amount of current as when operating on AC. Here’s an alternative to rewinding AC coils so that they can operate on DC circuits. It’s a relatively simple procedure requiring some calculations and some […]

What would happen if there was no winter? Originally Answered: What would happen to life on Earth if we did not have seasons? Seasons are caused by the earth’s tilt. Without tilt, there would be no summer season and no winter season. The equator would always be hot and the poles would always be cold. […]

Why do some objects float? An object floats when the weight force on the object is balanced by the upward push of the water on the object. The upwards push of the water increases with the volume of the object that is under water; it is not affected by the depth of the water or […]

Which angular velocity is greater a second hand minute hand and hour hand of a clock? The second hand goes through 2π radians in 1 min, or 2π radian/60 seconds, so ω = π/30 rad. s-1 = 0.03 rad. s-1. The minute takes one hour = 60 s/min × 60 min = 3600 s to […]

How do you test if sunglasses are polarized? Look at a bright, reflective light source (e.g., glass, water, or polished metal) with your shades on. If the light increases in intensity when you tilt your head sideways to around 60 degrees, you’re wearing polarized sunglasses. If there’s no change in quality, they’re just tinted. Where […]

How do I stop getting shocked from static? Stop Being Zapped: Skin Tips Stay Moisturized. Keeping your skin hydrated is one way to reduce the effects of static shock. Wear Low-Static Fabrics & Shoes. Rubber-soled shoes are insulators and build up static on your body. Add Baking Soda to Your Laundry. What things have a […]