Why a cart pulled by a horse can be moved? According to Newton’s third law of motion, action force is equal to reaction but acts on two different bodies and in opposite directions. When a horse pushes the ground, the ground reacts and exerts a force on the horse in the forward direction. This force […]
What determines the maximum number of an atom?
What determines the maximum number of an atom? The maximum number of electrons at a given energy level depends on its number of orbitals. There are at most two electrons per orbital. Electrons in the outermost energy level of an atom are called valence electrons. They determine many of the properties of an atom, including […]
How did a grain of sand get so small?
How did a grain of sand get so small? But how did it get so tiny, delicate, and uniform? Sand grains are nothing but finely divided inland and marine rock and mineral particles, as well as bio-organisms. These particles were submitted to countless hours of erosion and weathering processes before they got nearly indivisible. What […]
What are the three steps of external respiration?
What are the three steps of external respiration? The primary three components of external respiration are the surface area of the alveolar membrane, the partial pressure gradients of the gasses, and the matching of perfusion and ventilation. How do plants benefit from human respiration? During respiration, both energy and a gas known as carbon dioxide […]
Why is the iodine clock reaction important?
Why is the iodine clock reaction important? Purpose: The rate law for the reaction of an “iodine clock” reaction is to be established. It involves the determination of the order of reaction with respect to each of two reactants, as well as the determination of the rate constant for a particular temperature. What causes color […]
Where does Tesla buy its lithium?
Where does Tesla buy its lithium? Tesla, whose share price has climbed by around 700% this year, started delivering the first vehicles from its gigafactory in Shanghai in December 2019. It already sources lithium – an ingredient in EV batteries – from China’s Ganfeng Lithium, one of the world’s top lithium producers. Who is Tesla’s […]
What makes a person free?
What makes a person free? A free person will ignore negative judgement from others because they know what’s best for themselves. They also avoid handing too much power over to people with overbearing and forceful personalities. Free people don’t give in to peer pressure and meaningless obligations that don’t benefit them. How can I be […]
What shape does blood take as it free falls through the air?
What shape does blood take as it free falls through the air? Unique features of blood as it free-falls includes: → Blood that free-falls through the air has a high surface tension and thus it forms spherical droplets as it falls as opposed to the ‘tear-drop’ form that water takes as it falls. Each spherical […]
How did nuclear weapons start the Cold War?
How did nuclear weapons start the Cold War? Known as the Cold War, this conflict began as a struggle for control over the conquered areas of Eastern Europe in the late 1940s and continued into the early 1990s. Initially, only the United States possessed atomic weapons, but in 1949 the Soviet Union exploded an atomic […]
What are the two types of memory interference?
What are the two types of memory interference? Interference is an explanation for forgetting in long term memory. The basic theory states that interference occurs when information that is similar in format gets in the way of the information that someone is trying to recall. There are two types of interference; retroactive and proactive. What […]