Category: Physics

Why it is called Test Cross? Testcross is a cross between F1​ hybrid and homozygous recessive parent. Test cross is so named as it determines whether the individual with dominant phenotype is homozygous dominant or heterozygous dominant. What is Codominance give an example? Codominance means that neither allele can mask the expression of the other […]

How do you test for nitrogen in fertilizer? To perform the test, simply mix some of your fertilizer with water to dissolve the nitrates and then mix it with hydrochloric acid. Then add in some copper metal. The reaction is very slow to start up unless you heat it. Why is it important to carry […]

Why does path of light beam become visible while passing through a smoked room? Smoke is made up of tiny particles. The particles reflect light rays to all directions, including where we stand. As a result, we can see the path of the beam on the side. What is the example of Tyndall effect? When […]

How do you get rid of x10 on calculator? Casio models: Press [SHIFT][MODE][6:Fix]. You are then prompted to enter a number between 0 and 9. The number you enter fixes the number of decimal digits your results will have. What does E 4 mean on calculator? The e−4 part means that the decimal point in […]

Who leads the world in geothermal energy? the US Who is the father of geothermal energy? Arturo Pineda Alcaraz Who was the first person to use geothermal energy? Archaeological evidence shows that the first human use of geothermal resources in North America occurred more than 10,000 years ago with the settlement of Paleo-Indians at hot […]

What are the 3 causes of scarcity? In economics, scarcity refers to resources that a limited in quantity. There are three causes of scarcity – demand-induced, supply-induced, and structural. There are also two types of scarcity – relative and absolute. How does scarcity affect your life examples? Scarcity of resources can affect us because we […]

What are principles of code of ethics? Ethical Principles. The following broad ethical principles are based on social work’s core values of service, social justice, dignity and worth of the person, importance of human relationships, integrity, and competence. These principles set forth ideals to which all social workers should aspire. What are the 4 principles […]

Why do humans hear better in air than underwater? On land, sound travels through air conduction. This means that sound waves travel through the air, causing your eardrum to vibrate. Researchers have determined that bone conduction allows us to hear sounds underwater that are much higher in pitch than sounds we hear on land. Can […]

What is causality theory? Causality is a genetic connection of phenomena through which one thing (the cause) under certain conditions gives rise to, causes something else (the effect). The essence of causality is the generation and determination of one phenomenon by another. A cause is an active and primary thing in relation to the effect. […]

What changes can matter undergo? Matter can undergo changes of two basic types: physical changes and chemical changes. Physical changes are processes in which a material changes its physical appearance but not its basic identity. The evaporation of water is a physical change. What are the two kinds of changes that matter may undergo describe […]