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  1. alexandria

    Chemistry Cellular Respiration - Final electron receptor molecule

    Homework Statement Homework Equations none The Attempt at a Solution Here is my attempted answer, can someone please tell me if I did this correctly, thank you :) 22. Final electron receptor molecule involved in aerobic respiration: * the electron transport chain relies on oxygen to keep...
  2. alexandria

    Measuring Osmosis - Osmometer

    Homework Statement Hi, I'm doing a biology course online and i'm specifically learning biochemistry right now. I'm having a problem with the following question related to one type of passive transport in a cell: this being osmosis. This question relates to measuing osmosis (isotonic...
  3. alexandria

    Regarding Financial Accounting Fundamentals

    Hello, I was told that I could post questions related to Financial Accounting Fundamentals on the Pre-calculas Math section of Physics Forum. But everytime I post questions related to this topic, I don't get any replies or help. Am I posting in the wrong category??
  4. alexandria

    Preparing "Adjusting Entries" Financial Accounting

    Homework Statement Use a journal to prepare end-of-month adjusting entries for June 30th, 20-- for the following. The accounting period is one month. a) The balance in the supplies account is $865. Inventory taken at the end of the month shows supplies on hand worth $349. b) The beginning...
  5. alexandria

    Arithmetic and Geometric Series

    Homework Statement Homework Equations no equations required 3. The Attempt at a Solution a) so for part c) i came up with two formula's for the tortoise series: the first formula (for the toroise series) is Sn = 20n This formula makes sense and agrees with part a). for example, if the...
  6. alexandria

    Proving identities

    Homework Statement prove the following identity [/B] Homework Equations no equations required The Attempt at a Solution I've been trying to prove this identity, but no matter what I do, I can't seem to make both sides the same here is my answer to this qts so far: can someone please tell me...
  7. alexandria

    Journalizing, posting, trial balance, & financial statements

    Homework Statement I am doing a course called Financial Accounting Fundamentals (BAF3M-B) and I was told that physics forum provides help with qts related to this subject. Anyways, Here is the question I'm having trouble with: Sorry if the scanned version is a bit blurry :P a)...
  8. alexandria

    Financial Accounting Fundamentals - BAF3M-B

    I'm having trouble with a few questions from this course called Financial Accounting fundamentals gr.11. Does anyone know if physicsforum answers qts related to this subject?? I'm a homeschooler, so I don't receive any help from teachers, tutors, etc... Thanks.
  9. alexandria

    Periodic functions

    Homework Statement Homework Equations no equations required The Attempt at a Solution [/B] a) The number of hours of daylight is a periodic relationship, because it repeats the same wave-like pattern over the course of 1-2 years. b) the period is the amount of time it takes for one cycle...
  10. alexandria

    Exponential growth and compound interest

    Homework Statement Homework Equations A = P(1+i)^n The Attempt at a Solution Here is my attempted solution, can someone please verify if my method is correct! Thanks in advance![/B]
  11. alexandria

    Exponential growth and compound interest

    Homework Statement Homework Equations The Attempt at a Solution here is my attempted answer, can someone please verify if my method is accurate and if my solution is correct? thanks for the help!
  12. alexandria

    How does a car muffler work?

    Homework Statement im trying to understand how a car muffler works?? this is the pic that was in my lesson for a car muffler. Homework Equations no equations required The Attempt at a Solution i understand its purpose, i know its used in cars to dampen the noise produced by the gas coming...
  13. alexandria

    Modern applications of electromagnetism -- Regenerative Braking

    Homework Statement Can someone explain what regenerative breaking is? Homework Equations no equations required The Attempt at a Solution I understand that this occurs with electric cars. It uses the idea that the electric motor and the electric generator are so similar. But how does the...
  14. alexandria

    Electromagnetic Induction

    Homework Statement Homework Equations no equations required 3. The Attempt at a Solution so here are my answers, can some please verify if these are correct. Thanks in advance :) a) i have no idea if im labelling the poles correctly, or if the induced current is in the right direction , any...
  15. alexandria

    The motor principle and direction of force on conductor

    Homework Statement Homework Equations no equations required The Attempt at a Solution can someone please verify if my answer is correct. Thanks! I used the right-hand rule for the motor principle (although another tutor on physics forum told me that its supposed to be the 'left-hand rule'...
  16. alexandria

    Electromagnetism and the motor principle

    Homework Statement Homework Equations no equations are required The Attempt at a Solution is this correct? [/B]
  17. alexandria

    Electric generator and how it functions

    Homework Statement im trying to understand how an electric generator works Homework Equations no equations required The Attempt at a Solution here is a diagram of an electric generator, and a small section of what my lesson was trying to explain: [/B] so this was the explanation from my...
  18. alexandria

    Electric DC motor, commutator, carbon brushes, and magnets

    Homework Statement Homework Equations no equations required The Attempt at a Solution so here are my answers, i just want to know if they are correct. also, im really confused about the function of the commutator in the DC motor, the answer i wrote for part b) was based on research off...
  19. alexandria

    Calculating the cost of electricity

    Homework Statement Homework Equations Cost = rate x energy consumption (kWh) Energy consumption = power (kW) x total time (hrs) The Attempt at a Solution so here are my answers, can someone please verify if these are correct, thanks! a) To calculate power: There are fifteen 100 W...
  20. alexandria

    Examining electric circuits and deducing current and voltage

    Homework Statement Homework Equations equations listed below in chart The Attempt at a Solution here is my answer, i just need to know if im doing this correctly, thanks :)[/B]
  21. alexandria

    Explain the connection between Potential Difference, Current & Ohm's Law

    Homework Statement Homework Equations Ohm's Law R = V/I V = IR The Attempt at a Solution here is my answer, i have a feeling im missing something, any help would be appreciated.[/B] The graph represents a linear relationship between the potential difference (V) and the current (A). By...
  22. alexandria

    Thermal energy

    Homework Statement Homework Equations relevant equations listed with each question The Attempt at a Solution a) to solve for the power output of the heater, i used the following equation: Power = Energy/time i already know that Energy = Quantity so based on this, i can solve for Q = mass(ice)...
  23. alexandria

    Energy and power costs (fill in the table)

    Homework Statement So i have an idea of what im supposed to do, but i dont know if im on the right track, Any help would be appreciated! Thanks in advance :) Homework Equations relevant equations are listed below with each question 3. The Attempt at a Solution d) yearly energy cost ok so...
  24. alexandria

    Investigating Newtons law

    Homework Statement Homework Equations no equations required The Attempt at a Solution i already answered the question, but i just want to know if i wrote the right direction for the Fnet. is it [N 10 W] or [W 10 N]?[/B] this is how i wrote it: Fnet: 1165 N [N 10 degrees W]
  25. alexandria

    Applications of Newton's Law

    Homework Statement Homework Equations no equations required The Attempt at a Solution ok so i collected some information about bob-sledding, but i don't know if i've identified the role that friction plays for the athlete and their shoes in the sport, and i've only come up with one...
  26. alexandria

    Applications of Newton's Law

    Homework Statement [/B] Homework Equations d = v1(t) + ½ a (t)^2 Newtons second Law The Attempt at a Solution ok, so i know that once the puck leaves the stick, the only force acting on it would be the frictional force (1.0 N). From reading other forums, i guess i need to calculate the...
  27. alexandria

    Net acceleration, free body diagrams, velocity, force normal

    Homework Statement Homework Equations relevant equations are provided with each question below The Attempt at a Solution please check my solutions to ensure they are correct. thanks. a) [/B] b) Calculate net force: Fnet = FA + Ff + Fg Fnet = (1.20 x 104 N [up]) + (1.40 x 103 N [down])...
  28. alexandria

    Questions related to Kinematics

    Homework Statement so im sending my unit in for marking, and i collected a bunch of kinematic related questions that i've attempted to answer, but dont know if im on the right track. Any help would be appreciated. Thanks. 1.[/B] 2. 3. 4. 5. Homework Equations relevant equations are...
  29. alexandria

    Kinematics - identifying and describing types of motion

    Homework Statement I'm really having a hard time with this question, i posted the same question on another forum, but didn't really understand what the teacher was trying to say, please explain for me. thank you :) a) Calculate the time per mode of transport of the lettuce from each starting...
  30. alexandria

    Kinematic equations

    Homework Statement Homework Equations relevant equations are listed with each question The Attempt at a Solution 25. ** Displacement = 131 km (South) Average velocity = total displacement / total time Average velocity = 131 km (S) / 2.0 h Average velocity = 65.5 km /h (south) 26. **...
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