Is friction an evil or foe? Frictional force causes a lot of losses in general upkeep and wear and tear of machinery. Hence it is considered as a evil. But almost all crucial tasks cannot be carried out without the presence of friction. Basic activities like walking and writing on a surface are possible due […]
What organisms do humans compete with?
What organisms do humans compete with? Human beings also compete with some animals for food. For example, humans fish the oceans, taking many fish for their own consumption. When they do so, they take fish that larger fish would otherwise have eaten. These are both instances of humans and animals competing for resources. What do […]
What is the main benefit of SSB?
What is the main benefit of SSB? The Benefits of SSB By reducing the bandwidth transmitted, you may put double the number of channels (or stations) in the same frequency band. Because the carrier if also filtered out, there is no transmission unless information is being sent. This is useful if you are trying to […]
What are three types of mechanical energy?
What are three types of mechanical energy? Mechanical energy can be either kinetic energy (energy of motion) or potential energy (stored energy of position). Is riding a bike an example of mechanical energy? When you ride a bicycle, several things happen that require energy and it’s transformation. You pedaling the bike is transforming chemical energy, […]
Why are generators are an important use of electromagnets?
Why are generators are an important use of electromagnets? It converts mechanical energy into electrical energy in order to be used in an external circuit. The motors used for the conversion of energy contains a wire coil that is in a magnetic field. Generators are especially important during times of black out and lack of […]
What kind of simple machine is a doorknob?
What kind of simple machine is a doorknob? wheel and axle What simple machine would help her move the shingles? pulley Is a doorknob a lever? A doorknob is a simple machine that only has two main parts. Six basic types of simple machines exist: the lever, inclined plane, wedge, pulley, screw and the wheel […]
How do you remember the elements in group 2?
How do you remember the elements in group 2? S-Block Elements It includes Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Ru), Caesium (Cs), and Francium (Fr). Mnemonic for Group 1: LiNa Ki Ruby Cse Friendship hai. Group 2 is known as alkaline earth metals. It includes Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium […]
What is needed to make a complete pathway for current to flow in a circuit?
What is needed to make a complete pathway for current to flow in a circuit? To produce an electric current, three things are needed: a supply of electric charges (electrons) which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges. The pathway […]
What is the instrument used to measure weather?
What is the instrument used to measure weather? A RAIN GAUGE measures the amount of rain that has fallen over a specific time period. A WIND VANE is an instrument that determines the direction from which the wind is blowing. An ANEMOMETER measures wind speed. The cups catch the wind, turning a dial attached to […]
What are the five behaviors of electromagnetic energy?
What are the five behaviors of electromagnetic energy? Light waves across the electromagnetic spectrum behave in similar ways. When a light wave encounters an object, they are either transmitted, reflected, absorbed, refracted, polarized, diffracted, or scattered depending on the composition of the object and the wavelength of the light. Which of these is the main […]