Homework Help

Hey help please. I am so lost. I get most of the problems. but these stump me. 3. The mass of a robot is 5740 kg. This robot weighs 3440 N more on planet A than it does on planet B. Both planets have the same radius of 1.33 107 m. What is the difference MA - MB in the masses of these planets? 4. A passenger is pulling on the strap of a 16.0-kg suitcase with a force of 61.0 N. The strap makes an angle of 37.0° above the horizontal. A 37.8-N friction force opposes the motion (horizontal) of the suitcase. Determine the acceleration of the suitcase. 5. A 92 kg water skier is being pulled at a constant velocity. The horizontal pulling force is 270…

http://www.pen.k12.va.us/Div/Winchester/jhhs/math/probweek/p2005/ptemp.html Anyone have any ideas on solving this problem? Please reply to this post once you get the CORRECT solution. NOT some random guessing! Thanks and Good Luck!

I have a DCPIP solution of 3.37*10^-3 M I need it to be 1.7*10^-3 M I want 100ml of it. So how much water and how much of the 3.37*10^-3 M DCPIP do I have to put in. Also, anybody know a website or formula so I know for next time... Thanks a lot. By the way, 3.37/1.7=1.98235 and 1.7/3.37=0.504451

Hello everybody! I have a few questions regarding how I should read a book. Should I read every single word from the begining of the book till the end. Or, should I just read what I want to....?? Thanks.

Hi, I'm stuck with some homework making ionic equations. Here's what I think: Sodium Chloride Chlorine made at anode Sodium made at cathode Chlorine: 2cl- -2e --> cl2 Sodium: 2Na+ +2e --> Na Is that right? It probably isn't. I also need help with: Aluminium oxide Lithium fluoride Copper bromide Magnesium sulphide Please explain it in steps because I'm really dumb. Cheers

I need to simplify and solve. Could u plz gimme a step by step answer bcuz i get very confused in these type of cubed root questions. lim ((x+27)^1/3) -3) / x x->0 Its x+27 all under a cubed root subtract 3, all of this divided by x. Thanks in advance

Compare the usefulness of classifying bacteria based on shape to classifying them based on gram-stain results. I have no idea what i am supposed to write as its not in any of my notes. And ive been searching online for hours. Clearly i dont want anyone to answer the question for me but if its possible for anyone to give me some hints or at least point me in the right direction or something. If so then i thank you in advance and if no one can help me....well im just gonna have to keep searching online til my brain melts

Can I post my future essays here for you to help and correct? What if I still got D or F even corrected by you, what can you do!~~

Hey everbody I have this project due in two days and I'm really stuck. My project is on the lymph nodes and I'm stuck on a couple of questions. How does illegal and common drugs affect the lymph nodes. Why the lymph nodes located in the place where it is How Does the lymph nodes Respond to Changes Outside/Inside the Body How Does the Organ Work with Other Organs in the same Organ System Can any of you help me? :confused:

Okay, well I have to write a persuasive letter to the MTA (Metropolitan Transit Authority) demonstrating my concern over how the second avenue subway line project could impact the different types of metamorphic and sedimentart rocks found under the city if a new subway tunnel is built. Please help me..I've got nothing =\ and i also need reasons to why I should be against tunneling..

Hi I'm a grade 10 student looking for a scienc fair project. However, since I'm only interested in computer programming and math (but more interested in programming) and only know Turing (programming language), I couldn't find any good topics. Could someone give me an easy topic I can do well? Thank you

Hello everyone! I have a few questions about motions. Here they are :-D What does it mean when you use the word "magnitude"? What is the difference between vector and scalar & displacement and distance? Please explain that with examples (if possible) becuse I already know the meanings of them... How do we work with velocity-time graph? Please explain these formulas in details: F=ma Thanks

Dear Science Friends: Im in Grade 11 and I've got a science project I need to submit in about a month's time. I'd like some help for a good subject. Tesla coils are an interesting project but are there any variables that I could add that would make the project a little more scientific. If the Tesla coil doesn't work out then option then it's onto option No.2. I'm looking for experiments that deal with solar energy or if not then just energy period. Any help would be much appreciated.

I'm really having trouble with this problem...ANY HELP would be really really appreciated If someone slowly raises my left forearm, I will feel this has happened even if my eyes are closed because Action potentials propagated along axons from the biceps and triceps muscle spindles (and other sensors in the arm) will tell my brain that it has happened. a) What aspects of these axons or action potentials will tell the brain it was my left arm that was raised and not my right arm? What type of sensory code is being used to propagate this information to the brain? b) What aspects of these axons or action potentials will tell the brain that it was my left arm …

hmm just wondering if anyone else will back me up here, i don't believe that the solution given for this quesiton is drawn correctly: their answer: or is it me who is wrong?

I really don't like this unit mostly because i dont understand it. So can anyone please explain how to do this question i really need help. Determine the magnitude and direction of the gravitational force exerted (a) on the Moon by Earth and (b) on Earth by the Moon. I dont know how to do this, can anyone please explain how to do this question. Also are they looking for g or FG.

Which one of these oxidation reactions doesn't occur in cells? 2 H2 + O2 ------> 2 H2O + 114 kcal C6H12O6 + 6 O2 ------> 6 CO2 + 6 H2O + 686 kcal glucose palmitic acid + 23O2 -----> 16 CO2 + 16 H2O + 2338 kcal Please give a reason for your selection

I came up with some new ideas for my science project and I just wanted to get some opinions on it for my project I'm kind of having a hard time naming it but this is what it involves I plan to have 5 subjects 4 of my associates and myself, 2 of the subjects will be asked to do 10 questions from english, 10 from science, and 10 from math all within 15 minutes with the reward being 20$ for whoever can finish the most and get the higher score but all the while being oblivious of the time, my other two subjects will do the same thing only without an reward but their motivation will come from a timer i will set on the table their doing their work on so they will basically try …

This is very simple maths but I just can't get my head around it. 1) My first question (KEEP IN MIND THAT > SHOULD ACTUALLY INCLUDE EQUALS TO ALSO - I JUST COULDN'T PUT THE UNDERSCORE) I have a frequency table as follows: 1Q MIDPOINT FREQUENCY FX CUMULATIVE FREQUENCY 80 > 85 82.5 1 1 85 > 90 87.5 - - 90 > 95 92.5 7 8 95 > 100 97.5 4 12 THE QUESTION: The 85 …

For my chem lab, we have to do calculations based off Nerns's law. [math] E = E^{0} - \frac{RT}{F}ln [H^{+}] [/math] The question... Isn't this question missing information? such as E, since you need to solve for ln [H+]... am I right?

Where would you find ACS tests and answers? Is the test bank as huge as I think it is? gypsz:eek:

alright... the problem is: What is the mass of 1.0 millimole of sulfur dioxide? I am aware that one mole = 1000 millimoles, but I can't figure out how to work this one out. What is the answer, and how did you reach it? thanks

I need help with this question please. A skier on a slope inclined at 4.7 degrees to the horizontal pushes on ski poles and starts down the slop. The initial speed is 2.7 m/s. The coefficient of kinetic friction is between the skies and snow is 0.11. Determine how far the skier will slide before coming to rest. This question doesnt have mass, it doesnt have acceleration. I don't how to find Fnet. Can anyone please help me start this question.

I did the first part but then i have no clue on how to start the other.. here's the question: The reaction occurs at a temperature of 29.0 degress celsius and a pressure of 110kPa. Calculate the volume of gas that would produce if 720 mL of 1.35M sulfuric acid and 55.0g of zinc is used. H2SO4 + Zn --> ZnSO4 + H2 n=(1.35M)(0.72L) n= 55.0/65.38 n=0.972 mol n= 0.841 mol V= nRT/P V= (0.841*8.314*302.15) \ 110 V= 19.2L question b: When the reaction is part "a" occurs, 10.7 ml of water are produced. Calculate the percent error... i'm not sure how i can get water..

im doing a presentation on chiller systems. I wanna convey to my audience the meaning of 1500 kW of cooling. Can some one tell me what for example 1500 kW of cooling could be compared to ...something like "this amount of cooling energy could be used to make this many ice cubes in this amount of time" ...or something along those lines ....doesnt have to be ice cubes Any help or links to useful sites would be appreciated