Category: Physics

How long does aspirin take to dissolve in water? After the Alka-Seltzer tablet was added to the hot water the tablet should have quickly dissolved, taking some 20 to 30 seconds to do so, depending on the exact temperature. Does aspirin dissolve water? Solubility. Aspirin is only slightly soluble in water and acidic solutions such […]

What are two types of electric current? Current electricity is a constant flow of electrons. There are two kinds of current electricity: direct current (DC) and alternating current (AC). With direct current, electrons move in one direction. Batteries produce direct current. Is gold good conductor? Gold is used as a contact metal in the electronics […]

When and where are hydraulics used? They use hydraulics to increase water pressure for better cleaning. Dishwashers fitted with hydraulics are also generally quieter. Construction machines. Equipment such as cranes, forklifts, jacks, pumps and fall arrest safety harnesses use hydraulics to lift and lower objects. Are car hydraulics legal? A car with hydraulics over the […]

Is electromagnetic force affected by intervening medium? EM force does not need any intervening medium. Why is gravitational force independent of medium? Gravity is unipolar, attractive. So when it goes through a medium, there is no polarizing effect or polarizing forces. Thus the gravitational constant is independent of the intervening medium. Does electrostatic force depend […]

What is the ability to change matter? Energy is defined in science as the ability to move matter or change matter in some other way. Energy can also be defined as the ability to do work, which means using force to move an object over a distance. How does energy cause changes? HOW DOES ENERGY […]

Has Chang E 5 landed? Like its predecessors, the spacecraft is named after the Chinese moon goddess Chang’e….Chang’e 5. Spacecraft properties Landing date 16 December 2020 17:59 UTC Return capsule Landing site Inner Mongolia, China Lunar orbiter Orbital insertion 28 November 2020 12:58 UTC Is Chang E real? Chang’e, Wade-Giles romanization Ch’ang O, the Chinese […]

How do you sink wood in water? To saturate your wood you can soak it in water for a while. Keep some kind of weight on the wood to keep the entire piece submerged. The soaking will also help to leach tannins out of the wood which can discolour the water and can be harmful […]

What is my ideal weight for my height? Body mass index (BMI) is one of the most popular ways to calculate an ideal weight range. Getting your current BMI is as easy as plugging your height and weight into a calculator. A result between 18.5 and 24.9 means you’re in the “normal” weight range for […]

How do we calculate tension? Tension Formulas – How to Calculate Tension Force Tension can be easily explained in the case of bodies hung from chain, cable, string etc. T = W ± ma. Case (iv) If the body moves up or down with uniform speed, tension; T = W. T=m(g±a) As tension is a […]

What are the dimensions of the quantity? The dimension of a physical quantity is defined as the powers to which the fundamental quantities are raised in order to represent that quantity. The seven fundamental quantities are enclosed in square brackets [ ] to represent its dimensions. What are the dimensions of the quantity 1? The […]