Question

On question 23 of 4.1.2 problems from 11th edition of A First Course in Differential Equations with modeling applications by Zill, why do we make the Wronskian only to the first derivative? Why don't we have to do it do the second derivative and get a 2 by 3 matrix since the original equation given includes 2nd derivative of y?

Answer #1

On question 37 in 2.5 of A First Course in Differential
Equations with Modeling Applicatiosn 11th edition,
how do we decide that the substitution to use is u=v^(1-n)?
In general, how do we decide what to substitute when solving
differential equations or using Bernoulli's equation?

Question 9 (1 point)
An airplane starts from rest (vo = 0) and accelerates down a
runway at 2 m/s2 for 23 s until it takes off. Determine the
distance traveled before takeoff.
Your Answer:
Question 9 options:
Answer
Question 10 (1 point)
An airplane starts from rest (vo = 0) and accelerates down a
runway at 4 m/s2 and covers 245 m before it takes off. Determine
the time it takes.
Your Answer:
Question 10 options:
Answer
Question 11...

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3.13.6
Question 110 pts
A 319 kg motorcycle is parked in a parking garage. If the car has
35,494 J of potential energy, how many meters above ground is the
car? Report your answer to 1 decimal place. Please do not include
units or the answer will be marked incorrect.
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Question 210 pts
A box sitting on the top of a hill has 252 J of potential energy.
If the hill is 279 meters...

8 through 10 done please!!
3.13.6
Question 110 pts
A 319 kg motorcycle is parked in a parking garage. If the car has
35,494 J of potential energy, how many meters above ground is the
car? Report your answer to 1 decimal place. Please do not include
units or the answer will be marked incorrect.
Flag this Question
Question 210 pts
A box sitting on the top of a hill has 252 J of potential energy.
If the hill is...

just do questions 5 through 10
3.13.6
Question 110 pts
A 319 kg motorcycle is parked in a parking garage. If the car has
35,494 J of potential energy, how many meters above ground is the
car? Report your answer to 1 decimal place. Please do not include
units or the answer will be marked incorrect.
Flag this Question
Question 210 pts
A box sitting on the top of a hill has 252 J of potential energy.
If the hill...

do all five questions
Question 1
20 pts
Ignoring the effects of air resistance, if a ball falls freely
toward the ground, its total mechanical energy
Group of answer choices
increases
remains the same
not enough information
decreases
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Question 2
20 pts
A child jumps off a wall from an initial height of 16.4 m and lands
on a trampoline. Before the child springs back up into the air the
trampoline compresses 1.8 meters. The spring constant...

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NewForm IT is a seven-year-old IT consulting company founded in
2012 that provides services to small businesses in their local and
regional area.
NewForm employs 83 people, 61 of whom are IT professionals/
consultants.
NewForm is struggling financially; it has not met its revenue
projections in the last five quarters.
NewForm has suffered excessive leadership turnover in the past
three years.
The original founders sold NewForm in 2015; one of them, James
Stanton, remained on as CHRO but sold...

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