# Maple TA HW 15.1

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## Maple TA HW 15.1

Here is where you can add and discuss 122 HW's

**Admin**- Admin
- Posts : 22

Join date : 2008-09-17

## Question 3 / Forum

Where did the forum that was posted for 15.1 go ? Is there anyone who knows how to do question 3 I cant figure it out? I hate this new format.

**sjames**- Guest

## Re: Maple TA HW 15.1

you would think that if they had a semester to screw up, that it'd be ready for spring....

**a**- Guest

## Question 5

Can someone please help with question 5 I have all the other questions if anyone needs them I just need number 5 please?

**sjames**- Guest

## #5

all i need is the expression for number 5 so if anybody has that I will post up all my answers once I am done please help???????

**craziech**- Guest

## Re: Maple TA HW 15.1

I'll list them in order of blanks for most questions, and those involving the tasks I will paste my task in case they differ from yours, and show you how to do it so it can be applied to your own questions

1.) protons, a deficiency, an excess, 2, 1 , electron, 0, 1.6E-19 , huge compared to

2.) I don't seem to understand what they actually want in this question so I'll just tell you what I got...

"The task:

An object carries a charge of +1.802 . How many elementary electron charges is this ?"

Input variable given = Q

Output variable wanted = N

Additional variable needed = q

Value of input variable in SI units = 1.802E-6 (just convert micro-coulombs to coulombs)

SI unit of output variable is = none

The object has more

if someone can help me figure out what is meant by "Give the expression for the output variable, The value of the additional variable in S.I. Units is, and The value of the output variable is " that would be great. I don't want answers...if there is an equation to use just let me know that so I can work it out myself. I looked on ch.15 sheet 4 like it says but there is no expressions or anything

3.) G, masses, r, G, k, m, q , along , attractive, attractive, repulsive, 6.7E-11, much smaller, 9.0E9

4.) The task:

A 2.157 negative electric charge is placed at a distance of 23.857 cm from a positive electric

charge and experiences a force of 5.983 N. What is the magnitude of the positive charge ?

Fill in the blanks: q_1, r, F, k, q_2, k*((q_1*q_2)/(r^2)) , (F*r^2)/(k*q_1), multiply negative electric charge by 10^-6 for this answer, convert your radius in cm to meters, Force is already given in newtons , 9.0E9 , solve value of input variable by plugging in numbers into the (F*r^2)/(k*q_1) equation, giving you the q_2 value in Coulombs . The two charges attract each other since they are opposite

5.) m, r, G, F so far

I have to go to class but I'll post the rest of 5 and 6 when I figure it out. Once again if anyone can help me figure out whats wanted for #2 that'd be great. Also - is anyone else having a problem with #1 erasing your "Click list" answers everytime you go back to it? It keeps happening to me even after I save it and I don't want to submit the quiz later and have it show that I didn't put answers in there...

Thanks!

1.) protons, a deficiency, an excess, 2, 1 , electron, 0, 1.6E-19 , huge compared to

2.) I don't seem to understand what they actually want in this question so I'll just tell you what I got...

"The task:

An object carries a charge of +1.802 . How many elementary electron charges is this ?"

Input variable given = Q

Output variable wanted = N

Additional variable needed = q

Value of input variable in SI units = 1.802E-6 (just convert micro-coulombs to coulombs)

SI unit of output variable is = none

The object has more

**protons**then electronsif someone can help me figure out what is meant by "Give the expression for the output variable, The value of the additional variable in S.I. Units is, and The value of the output variable is " that would be great. I don't want answers...if there is an equation to use just let me know that so I can work it out myself. I looked on ch.15 sheet 4 like it says but there is no expressions or anything

3.) G, masses, r, G, k, m, q , along , attractive, attractive, repulsive, 6.7E-11, much smaller, 9.0E9

4.) The task:

A 2.157 negative electric charge is placed at a distance of 23.857 cm from a positive electric

charge and experiences a force of 5.983 N. What is the magnitude of the positive charge ?

Fill in the blanks: q_1, r, F, k, q_2, k*((q_1*q_2)/(r^2)) , (F*r^2)/(k*q_1), multiply negative electric charge by 10^-6 for this answer, convert your radius in cm to meters, Force is already given in newtons , 9.0E9 , solve value of input variable by plugging in numbers into the (F*r^2)/(k*q_1) equation, giving you the q_2 value in Coulombs . The two charges attract each other since they are opposite

5.) m, r, G, F so far

I have to go to class but I'll post the rest of 5 and 6 when I figure it out. Once again if anyone can help me figure out whats wanted for #2 that'd be great. Also - is anyone else having a problem with #1 erasing your "Click list" answers everytime you go back to it? It keeps happening to me even after I save it and I don't want to submit the quiz later and have it show that I didn't put answers in there...

Thanks!

**kat**- Guest

## MapleTA

How are you guys getting access to quiz 15_1? It's not under the course website when clicking Link to the course workshops.

**coolson**- Guest

## Q 5

It's under assignments on blackboard I also need just the expression for 5 I have the rest so if someone can share that I am willing 2 share what I have which is 1 thru 6

**Craziech**- Guest

## #2

What problems are you having with number two? I have the answer so ill post it but it seems as though you have all the answers

**Guest 87**- Guest

## Number 2

Im pretty lost with number 2. I cant figure out the expression for the output variable and the input of the variable in S.I. units whihc ultimately means I dont have the value of the output variable. I also need help with Question 5 the Gravitational Force in those variables alsong with the value of the output variable in S.I. Units. I have all the other answers so ill post them if you need. I just need help with those questions. Thanks to alll!!

**shanMone**- Guest

## Re: Maple TA HW 15.1

Units for #4 are C standing for Coulomb

Can you guys stop doing the whole.."Oh i have all the answers but ill only post mine if you post yours" nonsense? This website is here so we can all help each other out...you don't need conditions for trading answers. If we all just sit here and do that, no ones going to get anything done. If you have answers or methods that can help someone else out, quit being a baby and just do it. we're in college here...

Can you guys stop doing the whole.."Oh i have all the answers but ill only post mine if you post yours" nonsense? This website is here so we can all help each other out...you don't need conditions for trading answers. If we all just sit here and do that, no ones going to get anything done. If you have answers or methods that can help someone else out, quit being a baby and just do it. we're in college here...

**Kay**- Guest

## Question 5 Answer

I got the Expression for Gravitational Force for Question 5.

You use F= G*(m_1*m_2/r^2) but since m values are the same, you can just do m^2.

Therefore, the mapleTA syntax for this expression and the answer is: G*((m^2)/(r^2))

You plug your answers for mass (in kg) and radius (in meters) into that to solve for your output variable (F). The SI units will be in Newtons..

You use F= G*(m_1*m_2/r^2) but since m values are the same, you can just do m^2.

Therefore, the mapleTA syntax for this expression and the answer is: G*((m^2)/(r^2))

You plug your answers for mass (in kg) and radius (in meters) into that to solve for your output variable (F). The SI units will be in Newtons..

**Kathleen**- Posts : 42

Join date : 2008-12-18

## Question 6

Fill in the blanks: q, r , k , F, Expression for electrostatic force= k*(q^2/r^2), 1.6E-19, number given in task above in meters, 9.0E9, output variable is found by plugging all your knowns into the equation and solving for electrostatic force, SI units is N and gravitational force is "tiny compared to" electrostatic force.

goodddd luck!

goodddd luck!

**Kathleen**- Posts : 42

Join date : 2008-12-18

## #2

Hi

for #2 I am getting The value of the output variable wrong

even though i divided Q/q

what did u guys get for an answer

what was the powe u used?

any heeelp?

for #2 I am getting The value of the output variable wrong

even though i divided Q/q

what did u guys get for an answer

what was the powe u used?

any heeelp?

**sarah**- Guest

## Q5 and 6

5.) m, r, g,F, G*((m^2)/(r^2)), SI units at the end are in N

6.) q, r, k, F, k*(q^2/r^2) , SI units are also N

6.) q, r, k, F, k*(q^2/r^2) , SI units are also N

**Guest 87**- Guest

## Re: Maple TA HW 15.1

YUP I AM GETTING 2 WRONG AS WELL

WAT DID U GUYS GET FOR 2

The value of the output variable ?

WAT DID U GUYS GET FOR 2

The value of the output variable ?

**#2**- Guest

## final grade

did any of you get 5.88 out of 6?

i got every Q right, even checked with "how did i do"...

WTH is going on?

i got every Q right, even checked with "how did i do"...

WTH is going on?

**uhhhh**- Guest

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