What is definition of scalar? Scalars are quantities that are fully described by a magnitude (or numerical value) alone. Vectors are quantities that are fully described by both a magnitude and a direction. What does scalar mean in math? Scalar, a physical quantity that is completely described by its magnitude; examples of scalars are volume, […]
What are the forces on a parachutist falling at constant speed?
What are the forces on a parachutist falling at constant speed? So the faster they go, the smaller the total force pulling them down is, and the smaller their acceleration, until they reach a speed where they are in Equilibrium – the Drag force equals the force of Gravity, and they stop Accelerating. This means […]
How many groups and periods does Mendeleev have?
How many groups and periods does Mendeleev have? The periodic table is composed of seven horizontal rows or periods and is numbered between 1 to 7. There is a regular gradation in the properties of elements in the horizontal rows(periods) from left to right. The periodic table is composed of eight vertical columns or groups. […]
What is the role of science and technology in development?
What is the role of science and technology in development? Science and technology (S) capabilities are fundamental for social and economic progress in developing countries; for example, in the health sector, scientific research led to the development and introduction of oral rehydration therapy, which became the cornerstone of international efforts to control diarrheal … What […]
Why does the light bulb in a circuit turn on when you close the switch?
How does a light ray travels?
What is total energy of SHM?
What is total energy of SHM? In the SHM of the mass and spring system, there are no dissipative forces, so the total energy is the sum of the potential energy and kinetic energy. As the object starts to move, the elastic potential energy is converted into kinetic energy, becoming entirely kinetic energy at the […]
Why do you observe capillary action in day to day life?
Why do you observe capillary action in day to day life? Capillary action is important for moving water (and all of the things that are dissolved in it) around. It is defined as the movement of water within the spaces of a porous material due to the forces of adhesion, cohesion, and surface tension. What […]
What is the minimum height a mirror has to be for you to see your whole self in it?
What conveys air between the upper and lower respiratory?
What conveys air between the upper and lower respiratory? The lower respiratory system, or lower respiratory tract, consists of the trachea, the bronchi and bronchioles, and the alveoli, which make up the lungs. These structures pull in air from the upper respiratory system, absorb the oxygen, and release carbon dioxide in exchange. How do you […]