Category: Physics

What are three ways to break down a compound? Compounds can be broken apart in chemical reactions called decomposition reactions. For example, water can be broken down into the diatomic elements hydrogen gas and oxygen gas in a chemical reaction called electrolysis. Sodium chloride can also be broken down into elemental sodium and chlorine gas […]

Why does sand burn your feet? Yes, the sand heats up in the hot sun and is a common cause of burns on your feet. When it is 90 degrees outside, the sand can be over 120 degrees, hot enough to cause second and even third degree burns. So at the beach, wear Crocs, aqua […]

What is the primary rule of soccer? The two basic soccer rules for a proper throw-in are to have both feet on the ground and to throw the ball with both hands over the head. For teaching purposes it is common to allow players under the age of 8 to take more than 1 attempt. […]

What are examples of an unbalanced force? Practically anything that moves is a result of the exertion of unbalanced forces on it. If you kick a football and it moves from one place to another, it means that unbalanced forces are acting upon it. Ball moves from one place to another after kicking it. This […]

Which home workout program is the best? Here’s the deal with 13 of the most popular home workout programs out there. Fit Girl’s Guide 28-Day Jumpstart. Insanity. Love Sweat Fitness Hot Body Sweat Guide. PIIT28. PiYo. P90X. Tone It Up. 80-Day Obsession. What it is: A different strength or cardio workout every day for 80 […]

How quickly does Peat form? Peat is formed by decomposition and accumulation process of plant materials that grow on the land which is influenced by dry and wet season period. Peat formation occurs in a long period with the formation rate of about 1 mm per year (Charman, 2002), which means 1 m deep peat […]

Why do cheetahs have very little genetic variation? Even though the number of cheetahs grew to as many as 100,000 during the 19th century, their genetic variability remained low due to the extreme bottleneck event that took place thousands of years previously. What are the two types of variation? There are two forms of variation: […]

What type of system is a hydraulic system? A hydraulic system is a drive technology where a fluid is used to move the energy from e.g. an electric motor to an actuator, such as a hydraulic cylinder. The fluid is theoretically uncompressible and the fluid path can be flexible in the same way as an […]

Is oxygen a donor or acceptor? Oxygen is an oxidizing agent (electron acceptor) and hydrogen is a reducing agent (electron donor). What are the best electron donors? When a really good donor meets a great acceptor, the chemical reaction releases a lot of energy. Oxygen (O2) is the best electron acceptor and is used in […]

What is the basic source of magnetism? The source of magnetism is the electric charges. The movement of the electric charge causes magnetism. Substances are made from tiny atoms. These atoms have protons, electrons and neutrons. Where is magnetism found? A very common source of magnetic field found in nature is a dipole, with a […]