Category: Physics

What does boron smell like? “Elemental boron is a ceramic, and completely involatile,” Kennedy told me, “So it should have no smell associated with it, just like porcelain.” He points out that very fine boron dust might stimulate the nostrils in the same way that any dust would and could feasibly have a particular nuance […]

Why do toilets flush the opposite way in Australia? Because of the rotation of the Earth, the Coriolis effect means that hurricanes and other giant storm systems swirl counter-clockwise in the Northern Hemisphere, and clockwise in the Southern Hemisphere. In theory, the draining water in a toilet bowl (or a bathtub, or any vessel) should […]

Do antibiotics weaken immune system against viruses? However, antibiotics can also have harmful side effects, increase bacterial resistance, and sometimes even work against your immune system. Antibiotics are not effective against viruses, and overall, they are widely overprescribed and often unnecessary — here’s how to know if you should be taking them. Do antibiotics weaken […]

How do you know if a property is intensive or extensive? Extensive properties, such as mass and volume, depend on the amount of matter being measured. Intensive properties, such as density and color, do not depend on the amount of the substance present. Physical properties can be measured without changing a substance’s chemical identity. Which […]

Is it harmful to reheat tea? First things first, do not reheat the tea if it has been left at room temperature for anywhere between 4 to 8 hours. If you forgot to have your tea for a maximum of 10 to 15 minutes, it is safe to drink. The presence of milk results in […]

What percentage of C 14 remains after 3 half lives? Explanation: After 1 half-life, 12 of the C-14 would remain. After 2 half-life, 12 of the 12 of the C-14 = 14 of the C-14 would remain. After 3 half-life, 12 of the 14 of the C-14 = 18 of the C-14 would remain. What […]

Who wins the tug of war with what net force? 3 Answers. The force on rope is equal for both of them at any time. For winning the game the force on ground is responsible. What force pulls an object back to Earth? Gravity Is gravity push or pull? In general relativity, gravity neither pushes […]

How do you find the number of moles? The unit is denoted by mol. The formula for the number of moles formula is expressed as. Given. Number of moles formula is. Number of moles = Mass of substance / Mass of one mole. Number of moles = 95 / 86.94. How many moles of copper […]

How does popcorn popping relate to gas laws? This phenomenon can be explained by the Gay-Lussac gas law, which states that as the temperature of a gas increases, so does the pressure. During the explosion, the starch granules that contain the water vapor expand enormously – turning the kernel inside out and producing a fluffy […]

What are types of damped oscillation? The diagram shown on the right indicates three types of damped harmonic motion. Critically damped: The system returns to equilibrium as quickly as possible without oscillating. Underdamped: The system oscillates (at reduced frequency compared to the undamped case) with the amplitude gradually decreasing to zero. What is positive damping? […]