Why does gravity not pull us through the floor? When two ordinary objects, such as your shoes and the floor on which you stand, come close enough together, the electrons that surround the atoms of the floor and of your shoes repel each other strongly through the electic force (the so-called Coulomb force). But, not […]
What is the resolving power of a compound microscope?
What is the resolving power of a compound microscope? The resolving power is the capacity of an instrument to resolve two points that are close together. The resolving power of a compound microscope is 0.25μm. How do you increase the magnification of a compound microscope? In order to increase the magnifying power of a compound… […]
What is egg drop experiment?
What is egg drop experiment? The Classic “Egg-Drop” experiment has been a standard in science instruction for many years. Essentially, students are asked to construct some type of container that will keep a raw egg from cracking when dropped from ever-increasing elevations. What happens during an egg drop? While at rest, the egg has potential […]
What is the difference between two consecutive nodes?
What is the difference between two consecutive nodes? Hence we can say that the phase difference between the particles vibrating between two consecutive nodes is zero. What is the least distance between two consecutive nodes? In a stationary wave, the distance between two successive nodes(anti-nodes) is one half wavelength. Therefore, the distance between a node […]
What is infrared frequency?
What is infrared frequency? Infrared radiation (IR radiation for short) describes electromagnetic waves in the spectral range between visible red light and longer-wave microwave radiation (also known as terahertz radiation). Infrared (IR) has wavelengths λ between 780 nm and 1 mm, which corresponds to a frequency range from 300 GHz to 400 THz. What blocks […]
What are the three main parts of a sheathed cable?
What are the three main parts of a sheathed cable? Cables consist of three major components: conductors, insulation, protective jacket. What is the plastic part around a copper wire? Most electrical wire is covered in a rubber or plastic coating called insulation. Why is plastic used to cover copper wires? Electricity is very dangerous and […]
What are the 5 types of minerals?
What are the 5 types of minerals? Types of minerals Native elements. eg. Gold, Silver, Mercury, graphite, diamond. Oxides. eg corundum (incl. sapphire), hematite, spinel. Hydroxides. eg. Goethite, brucite. Sulfides. eg. Pyrite, galena, sphalerite. Sulfates. eg. Baryte, gypsum. Carbonates. eg. Calcite, magnesite, dolomite. Phosphates. eg. Apatite, monazite. Halides. eg. What is the most valuable mineral? […]
How can I change my negative personality?
How can I change my negative personality? Try to focus on possibilities, always read inspiring stories that can motivate you; try to work out daily. Similarly, if you find yourself in any negative situation, then try to pull yourself out of that place. Always remember, only positivity can help you grow and in to be […]
How does a projectile launcher work?
How does a projectile launcher work? Launcher The Projectile Launcher is used to investigate important concepts in two- dimensional kinematics. A steel ball placed in the launch barrel can be projected for different launch velocities and launch angles. Upon setting the desired angle and range, the hand pump is then used to pressurize the system. […]
Is it safe to use a not secure website?
Is it safe to use a not secure website? Insecure websites are vulnerable to cyberthreats, including malware and cyberattacks. If your site falls victim to a cyberattack, it can impact the site’s functioning, prevent visitors from accessing it, or compromise your customers’ personal information. Can you get hacked just by visiting a website? Depending on […]