A 195 g block is pressed against a spring of force constant 1.60 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0° to the horizontal. Using energy considerations, determine how far up the incline (in m) the block moves from its initial position before it stops under the following conditions.
(a)
if the ramp exerts no friction force on the block
m
(b)
if the coefficient of kinetic friction is 0.360
m
(c)
What If? If the ramp is 4.00 m long, what is the maximum coefficient of friction that would allow the block to reach the end of the ramp?
In: Physics
Which of the following are true about all normal distributions?
Check all that apply
A. They are symmetric.
B. They are all centered at zero.
C. They have one large tail.
D. They are categorically sharp.
I chose A and D but I still get errors . I dont know if my answer wrong or I have to add one more
In: Math
What is Cost-Volume-Profit analysis and how might it be used?
Explain Margin of Safety and how it is calculated.
Compute the Contribution Margin and describe what it reveals about a company’s cost structure.
What is Operating Leverage and how is it used to analyze changes in sales and profitability?
In: Accounting
Probability Plot Problem:
Considering the following observations for X:
X = [19.0, 16.0, 14.0, 13.0, 12.0, 11.0, 10.5, 10, 9.7, 9.2, 8.7, 8.5]
a) Use Minitab to determine the type of probability distribution for X. Cut & paste the chart and briefly describe the reason for your answer.
b) Use the trendline in Excel to determine the equation f(x) for the observations. Cut & paste the chart with the trendline equation.
c) According to the above f(x), what is the predicted value of the next observation in the series?
_____________________________________________
In: Math
2. Changes in law and policy regarding cooperation with other nations, the World Health Organization, and other such international agencies. ((unique answers please))
In: Nursing
In: Operations Management
In: Accounting
Assume that 15% of people are left-handed. If 6people are selected at random, find the probability of each outcome described below.
a) Find the probability that the first lefty is the sixth person chosen.
(Round to four decimal places as needed.)
b) Find the probability that there are some lefties among the 6 people.
(Round to four decimal places as needed.)
c) Find the probability that the first lefty is the fourth or fifth person.
(Round to four decimal places as needed.)
d) Find the probability that there are exactly 2 lefties in the group.
(Round to four decimal places as needed.)
e) Find the probability that there are at least 4 lefties in the group.
(Round to four decimal places as needed.)
f) Find the probability that there are no more than 2 lefties in the group.
(Round to four decimal places as needed.)
In: Math
1. Given the following scenario, what would be the phenotypic outcome of this dihybrid cross for the F2 generation:
|
A) 4 birds with yellow/normal wings: 4 birds with yellow/clear wings: 4 birds with white normal wings: 4 birds with white/clear wings |
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B) 16 birds with yellow/normal wings |
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C) 9 birds with yellow/normal wings: 3 birds with yellow/clear wings: 3 birds with white normal wings: 1 bird with white/clear wings |
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D) 8 birds with yellow/normal wings: 8 birds with white/clear wings |
2. Given the following scenario, how many birds in the F2 generation would be homozygous recessive for the clear wing trait?
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A) 8 |
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B) 4 |
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C) 3 |
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D) 1 |
3. Given the following scenario, how many of the birds in the F2 generation would be heterozygous for both traits:
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A) 8 |
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B) 2 |
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C) 3 |
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D) 4 |
In: Biology
The time required
to assemble an electronic component
is normally distributed, with a mean of
12 minutes and a standard deviation of
1.5 minutes. Find the probability that a
particular assembly takes:
a less than 14 minutes
b less than 10 minutes
c more than 14 minutes
d more than 8 minutes
e between 10 and 15 minutes.
In: Math
You submit your recommendations to your manager, and she tells you, “Thank you very much, but we have additional data for the Green Town Hopper: A 30% DOH results in a saving of 255 gallons per year. Please resubmit your recommendations taking this into account by tomorrow.” [hinT: You now have four data points on each graph, so try a general cubic instead: R 5 ax3 1 bx2 1 cx 1 d. Use a graph to estimate the optimal DOH
In: Math
Convert signed integer 0xACE9 to binary and decimal.
Convert unsigned integer0xACE9 to binary and decimal.
In: Computer Science
For a satellite at a height of 25,000 miles, at what speed must the satellite be traveling to achieve a circular orbit? (A score of 100% will tell you that you have achieved a circular orbit).
In: Physics
9. Discuss the trend in electronegativities across Period 2 from lithium to fluorine. Can you account for the difference in details from the trend in ionization energy?
In: Chemistry
Briefly describe how a Photovoltaic cell (PVC) operate and generate electrical power. Support your answers with schematic sketches if necessary
In: Mechanical Engineering