Hecelina drives her horse to pull her wagon up a long, shall…
Hecelina drives her horse to pull her wagon up a long, shallow hill. The horse and wagon system have a mass of 1600 kg, and the horse provides a constant force of 1000 N directing the wagon up the hill. The hill rises a vertical distance of 8.0 m, and the hill is 85 m long along the slope. With what starting speed must Hecelina drive her horses so that they barely make it to the top of the hill before stopping? Neglect any drag forces.
Read DetailsAs you know, biochemistry is essential for the process of li…
As you know, biochemistry is essential for the process of life and can be found in all living cells, from microbe to human. Please list the four classes (families) of biomolecules. For each biomolecule (AKA Macromolecule), list its building block (monomer) and the type of chemical bond formed. Lastly, provide the major functions of each biomolecule in a typical living cell.
Read DetailsRobert Koch helped establish the germ theory of disease by d…
Robert Koch helped establish the germ theory of disease by discovering that anthrax was caused by a disease. After he isolated and purified the same bacteria from several diseased animals, what would be the next step in order to show that this bacteria caused anthrax?
Read DetailsImagine that you are a research scientist and have recently…
Imagine that you are a research scientist and have recently discovered a method to engineer a bacteria from simple biomolecules that will change science forever. You are well on your way to receiving the Nobel Prize but you first must prove that it works. You want to design a pathogenic bacteria but are deciding whether to design it as a Gram-positive or Gram-negative bacteria. Which one would decide to make? Why? Fully justify your answer with what you have studied about Gram-positive versus Gram-negative bacteria.
Read DetailsA cylindrical container with a 40-cm height and a 2.0-cm dia…
A cylindrical container with a 40-cm height and a 2.0-cm diameter contains helium gas, which has density 0.1785 kg/m3. A piston on one side of the container moves inwards until the helium’s density is 0.22 kg/m3. What is the new height of the cylinder?
Read Details