Category: Physics

What are the advantages and disadvantages of Mendeleev classification? When noble gases were discovered can be kept in a separate group without disturbing the existing order. Disadvantages: He couldn’t allocate a correct position to hydrogen. Atomic masses didn’t increase in a regular manner, so it was impossible to predict how many elements could be discovered […]

Which are characteristics of a ray when it hits a boundary and refracts but not? F. Only these two options are characteristics of a ray when it is refracted, but not when it is reflected. In fact: Reflection occurs when a ray hits the interface between two mediums and bounces off back. When it is […]

What is the point of neutrons? Neutrons bind with protons and one another in the nucleus via the nuclear force, effectively moderating the repulsive forces between the protons and stabilizing the nucleus. How quickly does a neutron bomb kill? two days Is there a doomsday bomb? In a 2-part episode of the TV show The […]

What is the DC voltage symbol? Direct Current Voltage (DCV): Sometimes it will be denoted with a V– instead. This setting is used to measure direct current (DC) voltage in things like batteries. Alternating Current Voltage (ACV): Sometimes it will be denoted with a V~ instead. How do I measure DC voltage without a multimeter? […]

What are different types of polarization? Following are the three types of polarization depending on the transverse and longitudinal wave motion: Linear polarization. Circular polarization. Elliptical polarization. What are the 4 types of polarization? polarization Electronic polarization. Ionic polarization. Orientational polarization. Space charge polarization. What is meant by dielectric Polarisation? Dielectric polarization is the term […]

What sound intensity is defined as the level of pain? The level of pain is about 120 dB at all frequencies. The change in physical pressures from threshold of hearing to threshold of pain is twice as great at 2000 Hz (120 dB) as it is at 50 Hz (60 dB). How do you describe […]

Is Q A joule or kilojoule? You want your q to be in units of Joules or kJ. If you used the q=mC(delta T) with your given C, your q would be in units of (grams)(kJ). In the problem, you were given the heat capacity, not the specific heat capacity. Therefore, you don’t need mass […]

What is the formula for distance in physical science? Formula Description Example s= d/t Speed = distance / time 10 m / s v=d/t with a direction Velocity = distance / time with a direction. 10 m / s north  Greek letter “delta”; change in  Greek letter “sigma”; Sum of What is physical […]

Is a protozoa a virus? Diseases that are caused by viruses include the common cold, influenza, herpes, yellow fever, shingles, rabies, polio, and mononucleosis. Protozoa are single celled organisms. Most protozoa do not cause infections, but a few do. Malaria, dysentery, African sleeping sickness are caused by different species of protozoa. How can you distinguish […]

What is the important of digestive juices in digestive system? Your pancreas makes a digestive juice that has enzymes that break down carbohydrates, fats, and proteins. The pancreas delivers the digestive juice to the small intestine through small tubes called ducts. Liver. Your liver makes a digestive juice called bile that helps digest fats and […]