Category: Physics

What are the products in CH4 O2 CH4 CO2 H2O? The reaction is named as combustion reaction. When this reaction takes place, the result is carbon dioxide (CO2), water (H2O), and a great deal of energy. Burning methane releases only carbon dioxide and water. What is the balanced equation for C3H8 O2 CO2 H2O? There […]

What happens to the pH of a base when water is added? Adding water to an acid or base will change its pH. The acid is becoming less acidic. Similarly, when an alkali is diluted with water the concentration of OH – ions decreases. This causes the pH of the alkali to fall towards 7, […]

What is the most efficient cycle for a steam power plant? The Rankine cycle is the ideal cycle for vapor power plants; it includes the following four reversible processes: 1-2: Isentropic compression Water enters the pump as state 1 as saturated liquid and is compressed isentropically to the operating pressure of the boiler. What are […]

Why do bats die near wind turbines? When a wind turbine’s blades move, they cause a drop in nearby air pressure. If a bat flies too close to a turbine, this drop in air pressure can damage its lungs. They found that each wind turbine kills around 5 birds and 12 bats every year! How […]

What is the moral of the story of an hour? The moral of the story undermines the famous saying “the truth shall set you free”; Mrs. Mallard finds freedom in the false belief that her husband is dead, and dies when she faces the truth. What causes Mrs Mallard’s heart to fail at the end […]

Which of the following capacitor is polarized? Which of the following capacitors is polarized? 1) plastic-film 2) ceramic 3) mica 4) electrolytic 5) NULL What is the difference between polarized and nonpolarized capacitor? The most widely used polarized capacitor is electrolytic type. So basically the difference is change of the manufacturing process for more capacity. […]

Do neurons allow us to think? In short, our nervous systems detect what is going on around us and inside of us; they decide how we should act, alter the state of internal organs (heart rate changes, for instance), and allows us to think about and remember what is going on. To do this, it […]

How is glucose prevented from leaving the cell? First Half of Glycolysis (Energy-Requiring Steps) This reaction prevents the phosphorylated glucose molecule from continuing to interact with the GLUT proteins, and it can no longer leave the cell because the negatively charged phosphate will not allow it to cross the hydrophobic interior of the plasma membrane. […]

What happens to torque if field is non-uniform? An electric dipole always experiences a torque when placed in uniform as well as non-uniform electric field. But in non-uniform electric field, dipole will also experience net force of attraction. So the electric dipole in non-uniform electric field experiences both torque and force. What is meant by […]

How can we overcome modal dispersion? One way to reduce modal dispersion is to use graded-index fiber. Unlike the two distinct materials in a step-index fiber, the graded-index fiber’s cladding is doped so that the refractive index gradually decreases over many layers. Which type of fiber has highest modal dispersion? Multimode fiber What is difference […]