Category: Physics

What are the 5 models of Atom? Atomic models John Dalton’s atomic model. Plum pudding model. Rutherford’s model of the atom. Bohr’s model of the atom. Electron Cloud Model/Quantum Mechanics Model of Atom. Basic description of the quantum mechanical atomic model: Sources: What was the first atomic model called? Thomson atomic model What are the […]

Why don t Rockets go straight up? Why do rockets curve when they fly into space instead of going straight up? A: If a rocket just flew straight up, then it would fall right back down to Earth when it ran out of fuel! Rockets have to tilt to the side as they travel into […]

What is the principle of Electroscope? The working principle of an electroscope is based on the atomic structure of elements, charge induction, the internal structure of metal elements and the idea that like charges repel each other while unlike charges attract each other. What is the working of an Electroscope? ELECTROSCOPE : Electroscope is used […]

What is the difference between the chemical name and chemical formula? Chemical symbols refer to chemical elements only. They do not necessarily refer to atoms of that element, but also to ions. Chemical formulas refer to compounds and, specifically, the ratios in which it is made up by different chemical elements. What is the chemical […]

What does it mean when the two runners graphs cross? What does it mean when the two runners’ graphs cross? When the two runners graphs cross this means that in the graph above that runner 2 was behind but caught up and ran past runner 1 beating him to the finish line (40 meters). How […]

Is FCC stronger than BCC? FCC and BCC also have many different measurements within the unit cell, as shown in the table below. Additionally, FCC metals tend to be more dense, more stable at high temperatures, and more ductile than BCC metals. This comes from their packing arrangement and slip systems. Why is it called […]

What is the advantages and disadvantages of renewable energy? Disadvantages of renewable energy resources Energy Resource Advantages Disadvantages Hydroelectric power stations Clean and cheap to run Expensive to set up and output could be affected by drought Solar cells Clean and cheap to run Not always sunny and output does not always outweigh initial cost […]

What happens if a plane is too heavy? If the plane is too heavily loaded, then you will be unable to take off. (You might be able to get a meter or two above the ground due to a phenomenon called “ground effect”, but you could not climb any higher.) Is basic weight the same […]

Is water chemical energy? Water, like many substances, contains two kinds of energy. The first kind of energy is called kinetic energy. This is energy that is used during the execution of processes, such as movement. Because of kinetic energy water can flow and waves can exist. What form is energy stored in the human […]

How do you convert a smaller unit to a larger unit? To convert a smaller unit to a larger unit (eg to ), divide it by the number of smaller units which are needed to make. To convert from a larger unit to a smaller one, multiply. To convert from a smaller unit to a […]