How can models help scientists? Models use familiar objects to represent unfamiliar things. Models can help you visualize, or picture in your mind, something that is difficult to see or understand. Models can help scientists communicate their ideas, understand processes, and make predictions. What are some models used in science? Physical models, mathematical models, and […]
How do emotions affect our decision making?
How do emotions affect our decision making? Individual decisions are best understood as the interactions between reason and emotion. When we are calm, slow rational thinking guides our decisions. However, strong emotions place a constraint on clear thinking. For example, before an unpleasant encounter, you may decide to keep you cool. What are the elements […]
Are nucleons equal to mass number?
Are nucleons equal to mass number? The mass number (symbol A, from the German word Atomgewicht [atomic weight]), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. Why mass number is not a whole number? Because most atoms with several […]
What is the relation between power and frequency?
What is the relation between power and frequency? The relationship between power and frequency is inversely proportional to each other . The power demand reduces in the load so that the frequency increases in the transient period but at steady state condition. Frequency is number of waves that pass a fixed place in a given […]
Which of the following bulb will have high resistance?
Which of the following bulb will have high resistance? By comparing R1 and R2 first bulb, i.e., bulb with rating 60W−220V offers more resistance. Does wattage affect resistance? Resistors come in a variety of different ratings based on wattage. As a rule, lower wattage resistors are smaller than higher wattage resistors. What is the resistance […]
What does a seed contain Class 6?
What does a seed contain Class 6? A seed has three parts: Seed Coat. Endosperm. Embryo. What is difference between embryo and seed? The embryo, endosperm, and seed coat are the three major parts of a seed….Difference between embryo and seed. Embryo Seed It is formed by the fusion of sperm and nucleus. It is […]
How many babies are born each year in Fiji?
How many babies are born each year in Fiji? The crude birth rate indicates the number of live births occurring during the year, per 1,000 population estimated at midyear….Fiji: Birth rate from 2008 to 2018 (per 1,000 inhabitants) Birth rate per thousand population 2017 21.56 2016 21.8 2015 21.98 2014 22.11 What is the death […]
When a body is placed on a rough plane inclined at an angle?
How do you solve for change in velocity?
How do you solve for change in velocity? Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), […]
What problem will create when too much algae?
What problem will create when too much algae? Excessive algae growth will starve or suppress other forms of aquatic plant life, and can block sunlight necessary for their proper growth. Taste and odour problems in drinking water and sometimes even fish kills are associated with excessive blooms of planktonic algae. Is Dissolved oxygen harmful to […]