What determines why some traits are favorable? Favorable traits are traits that promote an organism’s success in a particular environment. In this way, the external forces of nature determine, or “select” which traits (or even which types of organisms) will continue to exist in a population. Do most parasites kill their hosts? In contrast to […]
What are the two basic components of a coating?
What are the two basic components of a coating? Two primary components of a liquid applied coating. Pigment and Vehicle (Resin or Binder and Solvent). Three methods by which a coating provides corrosion control. What are the different methods of coating? Typical Coating Techniques Dip Coating. Cost effective process provides uniform high quality coating on […]
Where on earth is there no magnetic declination?
Where on earth is there no magnetic declination? Earth is like a giant magnet with a North and South Pole. However, the magnetic North and South Pole are not aligned with the Geographic North and South Pole. How do you convert magnetic to true north? A true bearing would be 17° larger than a magnetic […]
What time of day is cheapest for electricity?
What time of day is cheapest for electricity? A few energy providers charge less for using electricity at certain times of day (or night). These off-peak hours tend to be quieter periods, for example, between the hours of 10pm and 8am. But most energy suppliers charge a flat rate for electricity. How much should I […]
What is the minimum energy needed to ionize hydrogen atom when it is in the N 2 state?
What is the minimum energy needed to ionize hydrogen atom when it is in the N 2 state? Minimum energy needed to ionize an electron from 2nd Bohr orbit of hydrogen atom is 5.45×10−19 J/atom. How much energy would it take to remove an electron from hydrogen? For a hydrogen atom, composed of an orbiting […]
Why is the air pressure at the equator lower than the pressure at 30 N and 30 S?
How should Hector correct his diagram?
How should Hector correct his diagram? How should Hector correct his diagram? He should make the arrow for “Path” curve downward. What happens to the force when the mass of one object is doubled? If the mass of one of the objects is doubled, then the force of gravity between them is doubled. If the […]
What is the biggest challenge students face today?
What is the biggest challenge students face today? 9 challenges students face in school are poverty, homeless families, child abuse and neglect, bullying (including cyber bullying), violence, obesity and eating disorders, sex and pregnancy, suicide, drugs, and dropping out. What are the problems of school? Some school problems you might worry about include: finding schoolwork […]
Why linear regression is called linear?
Why linear regression is called linear? Given a data set of n statistical units, a linear regression model assumes that the relationship between the dependent variable yi and the p-vector of regressors xi is linear. The model remains linear as long as it is linear in the parameter vector β. Why is regression linear? Simple […]
Which of the following describes a qualitative study?
Which of the following describes a qualitative study? It describes and answers questions about participants and contexts. It explores a phenomenon to better understand it. It answers questions and illuminates issues that cannot be answered by quantitative methods. Qualitative research can provide understanding of a particular setting or contextually relevant situation. What is qualitative data? […]