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Two boys pull their identical sleds to the top of a hill. One boy loads his sled with bricks while the other boy does not put any extra objects in his sled. The two boys, each weighing the same, get into their sleds and have a friend start them with equal pushes down the hill. Which of the following hypotheses are the boys most likely testing? A. The heavier the object, the more momentum it will have. B. The force of sliding friction is greater than the force of rolling friction. C. The size of the frictional force is determined by the types of surfaces rubbing together. D. The faster an object is traveling, the more momentum it will have.
Assume that a sample of red blood cells at a concentration of 2.69 x 106 cells/ml is serially diluted 1/10 three times and then serially diluted 1/2 two times.
Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. What outcomes be able to occur where the ranges of two species overlap.
Explain the reasons for change in the waveform recorded from leads 1 and 3 if the right arm and left arm lead wires were mistakenly reversed during ECG prep procedure.
You are given 1 ml of a 50 mM stock solution of NADPH. You are told to dilute it so that its absorbance in the spec 20 equals 0.80. The molar extinction coefficient for NADPH is 6220 liters per mole cm and the path length is 5 cm. The volume of th..
calculate the chances assuming you are drawing from the same deck the hand was dealt from.(4 different possibilities): straight from full deck: Flush from full deck: straight from "used" deck : flush from "used" deck: please provide formulas for t..
What system is not present in earthworms, but present in humans? How do you suppose the process is accomplished?
Mary has a genetically linked immunodeficiency. Unlike many such patients, who had recurrent infections with several gram-negative and/or gram-positive bacteria, Mary has only presented with infection with Neisseria meningitidis. Why is a phagocyt..
If an AaBBCcdd male ma of ridge-producing genes possible in one of their children? What is the minimum number of ridge-producing genes possible in a child of this couple?
Which ons is matching to photosynthetic bacteria?
Create and describe a data set including independent and dependent variables (be creative) and a table of the data. Explain how this would best be graphed to accurately present the results of the research (type of graph, axes, and scale limits - m..
q.1. clostridium and streptococcus are both catalase-negative. streptococcus grows by fermentation. why is clostridium
q1. if in an experiment protons could somehow rapidly be removed from inner membrane space how will this affect atp
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