How much force does it take to push a shopping cart? A full shopping cart requires a force of 88.0 Newtons to move across a horizontal floor at a constant velocity. What are the forces acting on a shopping cart when a woman pushes it? Answer: 1. frictional force, static force, pressure, etc. What acceleration […]
What is the five number summary for this data set?
What is the five number summary for this data set? A five-number summary is especially useful in descriptive analyses or during the preliminary investigation of a large data set. A summary consists of five values: the most extreme values in the data set (the maximum and minimum values), the lower and upper quartiles, and the […]
What is the oldest breed of dog?
What is the oldest breed of dog? 8 Oldest Dog Breeds in The World Chow Chow. Year: Circa 150 – 200 B.C. Chinese Shar Pei. Year: Circa 206 B.C. Saluki. Year: Circa 329 B.C. Samoyed. Year: 1000 B.C. Alaskan Malamute. Year: Circa 1000 B.C. Afghan Hound. Year: Circa 6,000 B.C. Basenji. Year: Circa 6000 B.C. […]
What are the two types of emission spectra?
What are the two types of emission spectra? The spectra can be divided into two types viz., emission and absorption spectra. The differences between them are given below. 1) The emission spectrum is obtained due to emission of radiation from the substances. What is most important about the emission spectra? The different colors of light […]
What are 3 things a testable question needs?
What are 3 things a testable question needs? A testable question asks how one change (independent variable) has an effect on something else (dependent variable)….Scientific Questions = Testable Questions How does (IV) affect (DV) ? What is the effect of (IV) on (DV) ? What effect does (IV) have on (DV) ? Can you prove […]
What greenhouse gas has over 100x the efficiency of carbon dioxide to reflect light back to the earth?
What greenhouse gas has over 100x the efficiency of carbon dioxide to reflect light back to the earth? A methane molecule has 25 times the global warming potential of a CO2 molecule. A single nitrous oxide molecule has 298 times the global warming potential of a CO2 molecule. Which of the following contribute the most […]
What is a Fourier power spectrum?
What is a Fourier power spectrum? The power spectrum of a time series. describes the distribution of power into frequency components composing that signal. According to Fourier analysis, any physical signal can be decomposed into a number of discrete frequencies, or a spectrum of frequencies over a continuous range. What is voltage spectrum? VSpec calculates […]
What weather does a cumulus cloud bring?
What weather does a cumulus cloud bring? What weather is associated with cumulus clouds? Mostly, cumulus indicates fair weather, often popping up on bright sunny days. Though if conditions allow, cumulus can grow into towering cumulus congestus or cumulonimbus clouds, which can produce showers. What type of weather does a stratus cloud bring? What weather […]
What does HG represent?
What does HG represent? The symbol Hg that mercury is known by comes from its Greek name, hydrargyrum, which means “liquid silver” — to reflect its shiny surface. The element is also known as quicksilver for its mobility. Does Sweden use metric system? Sweden adopted the metric system in 1889, after a decision by the […]
Is reduction Exergonic or Endergonic?
Is reduction Exergonic or Endergonic? The dehydrogenase enzyme reduces acetaldehyde to ethanol, which is an endergonic (energy-requiring) reaction: The reduction of acetaldehyde is coupled to the oxidation of NADH to NAD+, which is an exergonic reaction. Do oxidation and reduction always occur together? So oxidation and reduction always occur together; it is only mentally that […]