Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Chapter 8, Problem 34E
Estimate the mass of the object that formed Meteor Crater in Arizona.
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The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE ONLY TRIGNOMETRIC FUNCTIONS (SIN/TAN/COS, NO LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!
The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE DO NOT USE LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!
Chapter 8 Solutions
Astronomy
Ch. 8 - What is the thickest interior layer of Earth? The...Ch. 8 - What are Earth’s core and mantle made of? Explain...Ch. 8 - Describe the differences among primitive, igneous,...Ch. 8 - Explain briefly how the following phenomena happen...Ch. 8 - What is the source of Earth’s magnetic field?Ch. 8 - Why is the shape of the magnetosphere not...Ch. 8 - Although he did not present a mechanism, what were...Ch. 8 - List the possible interactions between Earth’s...Ch. 8 - List, in order of decreasing altitude, the...Ch. 8 - In which atmospheric layer are almost all...
Ch. 8 - What is, by far, the most abundant component of...Ch. 8 - In which domain of living things do you find...Ch. 8 - Describe three ways in which the presence of life...Ch. 8 - Briefly describe the greenhouse effect.Ch. 8 - How do impacts by comets and asteroids influence...Ch. 8 - Why are there so many impact craters on our...Ch. 8 - Detail some of the anthropogenic changes to...Ch. 8 - If you wanted to live where the chances of a...Ch. 8 - Which type of object would likely cause more...Ch. 8 - If all life were destroyed on Earth by a large...Ch. 8 - Why is a decrease in Earth’s ozone harmful to...Ch. 8 - Why are we concerned about the increases in CO2...Ch. 8 - Do you think scientists should make plans to...Ch. 8 - Europe and North America are moving apart by about...Ch. 8 - Over the entire Earth, there are 60,000 km of...Ch. 8 - With the information from Exercise 8.25, you can...Ch. 8 - What is the volume of new oceanic basalt added to...Ch. 8 - Suppose a major impact that produces a mass...Ch. 8 - How do the risks of dying from the impact of an...Ch. 8 - What fraction of Earth’s volume is taken up by the...Ch. 8 - Approximately what percentage of Earth’s radius is...Ch. 8 - What is the drift rate of the Pacific plate over...Ch. 8 - What is the percent increase of atmospheric CO2 in...Ch. 8 - Estimate the mass of the object that formed Meteor...
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