Reference no: EM13801557
Question 1
A person pulls a crate with 120 N of force against 100 N of friction a distance of 5 meters. Sketch a free body diagram showing the forces acting on the crate and find the energy the person expends pulling the crate, the amount of energy converted to heat via friction, and the increase in the kinetic energy of the crate. Please show your step-by-step solution along with formulas.
Question 2
A box of mass 4 kg is resting on a table 1.5 m above the floor. There is also a ledge located 5 m above the floor. First, provide a sketch of this problem. Then, find the gravitational potential energy of the box relative to the floor, and the gravitational potential energy of the box relative to the ledge. Please show your step-by-step solution along with formulas.
Question 3
An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill? Please show your step-by-step solution along with formulas.
Question 4
A 40,000 kg railroad car initially traveling at 10 m/s collides in-elastically with a 20,000 kg railroad car initially at rest. The cars stick together. What is their final speed? Please show your step-by-step solution along with formulas.
Question 5
A roller coaster is initially at a height of 40 m above the ground and has an initial velocity of 15 m/s. Using conservation of energy, find the velocity of the roller coaster at a height of 5 m above the ground. Sketch the problem before you solve it. Please show your step-by-step solution along with formulas.
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What does your character dream about
: Your character's dream life is fascinating, so describe it. What does your character dream about? How does this dream change a reader's understanding of the character? What does it reveal?
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Describe the different forms the energy
: How do these ratios compare - How do you explain this in terms of energy conservation and Describe the different forms the energy takes during this experiment. Include the initial form of energy when the car is at rest at the top of the ramp, the f..
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Pharmaceutical companies in the health care industry
: Analyze the role of U.S. pharmaceutical companies in the health care industry, and give your opinion on whether or not you believe the protocols used in their business transactions falls under moral considerations.
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Create a rexx program
: Create a REXX program that asks a user for four separate lines of input, and then outputs those lines all at once, one line at a time
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What is the average power in watts
: What is the average power in watts he expends climbing the hill - Please show your step-by-step solution along with formulas.
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Companies in the health care industry
: Analyze the role of U.S. pharmaceutical companies in the health care industry, and give your opinion on whether or not you believe the protocols used in their business transactions falls under moral considerations.
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Use equation for binomial probability issues
: A pollster selected 4 of 10 available people. How many different groups of 4 are possible?
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What knowledge did you gain about love addiction
: Briefly outline the characteristics of the Obsessive Love Wheel at each stage of the wheel. After reading the book, what knowledge did you gain about love addiction?
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Bowling alone-america declining social capital
: Read the articles, Bowling Alone: America's Declining Social Capital and Still Bowling Alone? The Post-9/11 Split from the Project Muse database in the Ashford University Library. For this discussion, complete the following:
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