What is the difference between salt and sugar dissolving in water? The oppositely charged ends of polar water molecules attract the ions and pull them away, resulting in dissolving. Sugar is made from sucrose molecules which are larger and more complex than the ions in salt (See Teacher Background Lesson 1.2). When sugar dissolved in […]
Are Push Ups anaerobic?
Are Push Ups anaerobic? Aerobic exercise (also known as cardiovascular exercise) builds your endurance. Anaerobic exercise typically means activities such as weightlifting and push-ups and sit-ups, which builds muscle and physical strength through short bursts of strenuous activity. Is speed aerobic or anaerobic? In most forms of speed training, including sprinting on the track or […]
What is a experiment simple definition?
What is a experiment simple definition? An experiment is a procedure carried out to support, refute, or validate a hypothesis. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a particular factor is manipulated. Uses of experiments vary considerably between the natural and human sciences. What is basic experiment? A simple experiment is […]
How do you do apparent weight?
How do you do apparent weight? The apparent weight of an accelerating object is the vector sum of its real weight and the negative of all the forces that produce the object’s acceleration a = dv/dt. wapparent = wreal – ma. How do you use apparent in a sentence? Certain problems were apparent from the […]
What is the most important compound?
What is the most important compound? water What are the 10 most common compounds? Glossary Compound Formula Abundance parts per million by weight Silicon dioxide SiO2 428,600 Magnesium oxide MgO 350,700 Ferrous oxide FeO 89,700 Aluminum oxide Al2O3 69,900 What are examples of common compounds? Examples of Compounds – Common Compounds C2H6O: Alcohol. NaCl: Salt. […]
What is the electric flux through a cube of 1 cm?
What is the electric flux through a cube of 1 cm? Therefore, the net charge enclosed within the cube is zero. Therefore, electric flux is zero. What are the three basic properties of the electric charge? In this section, we will learn about three such properties of point charges; the additivity of electric charge, the […]
What is an ionic bond write two examples?
What is an ionic bond write two examples? An ionic bond is formed as a result of the electrostatic attraction between the positive and negative ions formed by the transfer of electrons from one atom/group to another. Examples: NaCl,KBr,etc. What is ionic and covalent bond explain with example? The two main types of chemical bonds […]
Why is the maximum possible heat rate for a heat exchanger not equal to Cmax Thi TCI?
Why is the maximum possible heat rate for a heat exchanger not equal to Cmax Thi TCI? Why is the maximum possible heat rate for a heat exchanger not equal to Cmax(Thi-Tci)? Can the outlet temperature of the cold fluid ever exceed the inlet temperature of the hot fluid? No the outlet temperature of the […]
How do gamma rays work?
How do gamma rays work? Gamma-rays have the smallest wavelengths and the most energy of any other wave in the electromagnetic spectrum. These waves are generated by radioactive atoms and in nuclear explosions. Gamma-rays can kill living cells, a fact which medicine uses to its advantage, using gamma-rays to kill cancerous cells. Why are gamma […]
What are the noise control methods?
What are the noise control methods? Extraction, ventilation, cooling, openings in walls and enclosures. Instead of fitting silencers, it is often possible to achieve a 10 – 20 dB reduction in airborne noise from a duct or opening by lining the last bend in the ductwork with acoustic absorbent (foam or rockwool / fibreglass). Which […]