How do you identify stars and planets? The easiest way to pick out planets is to remember this quick rule of thumb: stars twinkle and planets don’t. Seen with the naked eye, planets and stars both appear as pinpoints of light. When you observe a star, you’ll notice that it twinkles and the light may […]
What causes a pendulum to eventually slow down and stop swinging?
What causes a pendulum to eventually slow down and stop swinging? A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity. The swing continues moving back and forth without any extra outside help until friction (between the air and the swing and between the chains […]
What are the two primary functions of DNA polymerase III?
What are the two primary functions of DNA polymerase III? In Escherichia coli, five DNA polymerases have been found and designated as DNA polymerase I–V, in order of their discovery. The main function of the third polymerase, Pol III, is duplication of the chromosomal DNA, while other DNA polymerases are involved mostly in DNA repair […]
What is the first order perturbation theory?
What is the first order perturbation theory? First order corrections The process begins with an unperturbed Hamiltonian H0, which is assumed to have no time dependence. It has known energy levels and eigenstates, arising from the time-independent Schrödinger equation: For simplicity, it is assumed that the energies are discrete. What is meant by perturbation? 1 […]
Can anything fly in the thermosphere?
Can anything fly in the thermosphere? The thermosphere is one of the layers in the atmosphere. Too thin for planes to fly and too cold for humans to survive. However, they are not the only things that happen in the thermosphere. The International Space Station also orbits the Earth in this layer. Does temperature really […]
In which mirror image is always erect?
In which mirror image is always erect? Convex mirror What type of mirror is it? Types of Mirrors Mirrors can be broadly classified as plane mirrors, rotating mirrors, inclined mirrors and spherical mirrors. Moreover, spherical mirrors can be further classified into two types, i.e. a concave spherical mirror and a convex spherical mirror. Is real […]
Is an oar a third class lever?
Is 1M 100cm?
How stars die and are born?
How stars die and are born? Stars are born within the clouds of dust and scattered throughout most galaxies. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. As the cloud collapses, the material at the center begins […]
Why does the slinky eventually stop?
Why does the slinky eventually stop? Gravity begins to provide this force, as soon as the Slinky is cast down a stairway. This motion is sustained through a directional wave that ricochets throughout the coil and stops when the toy hits the bottom of the stairs. How long can a slinky be stretched? 15 feet […]