How do you know if a collision is perfectly elastic?

How do you know if a collision is perfectly elastic? If the kinetic energy is the same, then the collision is elastic. If the kinetic energy changes, then the collision is inelastic regardless of whether the objects stick together or not. In either case, for collisions with no external forces, momentum is conserved. Does kinetic […]

How do you teach basic concepts?

How do you teach basic concepts? How to Teach Basic Concepts in Preschool Speech Therapy: Create basic concept visual supports. Pair teaching with familiar toys for familiar nouns and verbs. Play with several different toys while focusing on the basic concept using modeling, cloze sentences, and songs. Play an interactive game that targets the skill. […]

What are the 5 uses of sound waves in research and industry?

What are the 5 uses of sound waves in research and industry? Today’s Use of Sound Technology Cellular Telephone. Motion Picture. Telephone. C.D.’s Televisions. Phonographs. Electronics. Hearing Aids. Video Tape Recorders. What is the importance of sound in our daily life? Sound is vital to sharing information, interacting with other people, creating art, regulating schedules, […]

Is it OK to use WD40 on bike chain?

Is it OK to use WD40 on bike chain? Can I use WD-40 to lube my bicycle chain? No. You should never use WD40 as chain lubricant since WD-40 is NOT a true lubricant since it’s primary use is as a solvent or rust dissolver. How often should I oil my bicycle chain? The recommendation […]

What is the temperature of the South Equatorial Current?

What is the temperature of the South Equatorial Current? The average temperature of the South Equatorial Current is about 26°-28°C near the surface and 22°-24°C at 100 m depth (Mayer and al., 1998). The annual cycle of temperature is relatively stable between March and September, the two seasonal extremes, with a variability of about 4°C. […]

What is the effect of hysteresis?

What is the effect of hysteresis? The magnetization of ferromagnetic substances due to a varying magnetic field lags behind the field. This effect is called hysteresis, and the term is used to describe any system in whose response depends not only on its current state, but also upon its past history. Is an example of […]

Why is apparent weight less than true weight?

Why is apparent weight less than true weight? A floating or immersed object is not accelerating upwards or downwards, so there can be no net force. In fact, buoyancy provides a supporting force exactly as the ground does. Objects also experience some buoyancy in air, so even in air the normal force (apparent weight) is […]

What is the electric field at the origin?

What is the electric field at the origin? Answers and Replies. There is no charge at the origin. In the formula E = kQ/r2, Q is the charge that is producing the electric field. How do you find the electric field intensity at origin? The electric field intensity at a point is the force experienced […]

What is the principle of acid base titration?

What is the principle of acid base titration? Acid-base titrations depend on the neutralization between an acid and a base when mixed in solution. The endpoint and the equivalence point are not exactly the same: the equivalence point is determined by the stoichiometry of the reaction, while the endpoint is just the color change from […]

What are the two kinds of electrostatic charges?

What are the two kinds of electrostatic charges? Electric charges are of two general types: positive and negative. Two objects that have an excess of one type of charge exert a force of repulsion on each other when relatively close together. Where is the lower end of lightning conductor fixed and how? Lightning conductor consists […]

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