Category: Physics

Do Isotopes have the same atomic mass? Isotopes are atoms with different atomic masses which have the same atomic number. The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus. How do you tell if an atom is an isotope? Look up at […]

Does light travel faster in air or water? Explain that unlike sound, light waves travel fastest through a vacuum and air, and slower through other materials such as glass or water. What happens when two light waves collide? Wave interference is the phenomenon that occurs when two waves meet while traveling along the same medium. […]

What are the vertical and horizontal components of a projectile? The trajectory of a projectile depends on motion in two dimensions. The x component is the horizontal motion of the projectile, and the y component is the vertical motion of the projectile. Once a projectile is in motion, it is in freefall. The only acceleration […]

What unit is used for average atomic mass? The average atomic mass (sometimes called atomic weight) of an element is the weighted average mass of the atoms in a naturally occurring sample of the element. Average masses are generally expressed in unified atomic mass units (u), where 1 u is equal to exactly one-twelfth the […]

What compares Probeware to traditional analog tools? Measurements by traditional analog tools are good to a larger number of significant figures. Measurements by traditional analog tools are less prone to experimental error. Probeware is typically very difficult to transport. Probeware is useful for obtaining many measurements in rapid succession. Which tool is used to measure […]

Which harmonics are missing in closed organ pipe? If both the ends of pipe is open it is called as Open organ pipe like Flute. A closed organ pipe has an antinode at the open end and node at the closed end. “In closed end organ pipe, even number harmonics are absent.” Why do closed […]

How does accretion start? In astrophysics, accretion is the accumulation of particles into a massive object by gravitationally attracting more matter, typically gaseous matter, in an accretion disk. Most astronomical objects, such as galaxies, stars, and planets, are formed by accretion processes. What do you mean by accretion? 1 : the process of growth or […]

At what joint does eversion and inversion occur? subtalar joint What muscles do inversion? There are two muscles that produce inversion, tibialis anterior, which we’ve seen already, and tibialis posterior. The other muscle that can act as a foot invertor is tibialis anterior, which inserts so close to tibialis posterior that it has almost the […]

Which elements are too reactive in nature? Like the Group 1A elements, the alkaline earth metals are too reactive to be found in nature in their elemental form. The alkaline earth metals have two valence electrons in their highest-energy orbitals (ns2). They are smaller than the alkali metals of the same period, and therefore have […]

What are 3 disadvantages of a reflecting telescope? Reflecting telescopes have a few disadvantages as well. Because they are normally open, the mirrors have to be cleaned. Also, unless the mirrors and other optics are kept at the same temperature as the outside air, there will be air currents inside the telescope that will cause […]