Recent content by aceXstudent

  1. A

    AP Test Problems: Solutions and Checks for Fatty Packet Questions

    New Questions Sorry to bother, but I have some more questions. Thanks for the tips and hints for my last questions. Problem: A large rectangular raft with a density of 650 kg/m^3, a surface area of 8.2m^2 at the top, and a volume of 1.8m^3 is floating on lake water with a density of...
  2. A

    AP Test Problems: Solutions and Checks for Fatty Packet Questions

    I have some questions (or checks) on some problems from a fatty packet our teacher decided to give us for the AP test. If I've already given a possible solution, see if I did it right. Thanks! Problem 1: A simple pendulum consists of a mass 1.8kg attached to a string of length 2.3m...
  3. A

    What Does a Scale Read for a Person in an Elevator Under Various Conditions?

    Well, for part (e) it would actually have to be Fscale=m(g-a) because the person's mass reading can't be -98kg. It would be 52kg.
  4. A

    What Does a Scale Read for a Person in an Elevator Under Various Conditions?

    I'm confused... the book wants it in kg, a scalar quantity instead of a force. EDIT: I feel so dumb to not get that...
  5. A

    What Does a Scale Read for a Person in an Elevator Under Various Conditions?

    The textbook given to us used 9.8m/s^2 (nine-point-eight-meters-per-second-square) for their gravity, and our instructor uses the system of the textbook. As for the problem, the textbook wants me to give the reading in kg... I didn't understand how to do this either. As for part (d), I factored...
  6. A

    What Does a Scale Read for a Person in an Elevator Under Various Conditions?

    Hi, this problem gave me some trouble and I'm not sure if I did this correctly. The problem reads: A 75-kg person steps onto an elevator with a scale. What does the scale read when the elevator (a) is at rest, (b) climbing at 3.0m/s, (c) falling at 3.0m/s, (d) accelerating upward at 3.0m/s^2...
  7. A

    Calculating Forces with Friction and Newton's Laws

    -_-, still confused, sorry... acceleration is 2.48m/s^2-- what do i do with that number?
  8. A

    Calculating Forces with Friction and Newton's Laws

    Errrr... I was looking for the force that each box exerts on each other, not the acceleration... But thanks anyways.
  9. A

    Calculating Forces with Friction and Newton's Laws

    Hi there, I'm having some trouble with this problem right now. We are learning about Newton's First/Second/Third Laws. With a friction coefficient of 0.15, what is the force that the crates exert on each other if the crate 1 is 75kg and crate 2 is 110kg with a push of 730N? Can anyone...
  10. A

    Can She Clear the Intersection or Stop in Time?

    We've only covered constant acceleration formulas. They are as follow: a= (V-Vo)/t V^2=Vo^2+2ad d=Vot+1/2at^2 d=1/2(Vo+V)t Average Velocity= Vo+V/2 Keep in mind I just started AP Phyz, skipped Chem and Phyz.
  11. A

    Can She Clear the Intersection or Stop in Time?

    Hi, our teacher requires us to do problem solving questions, which means a full one page report about the situation. I got stuck on this part and would like some advise. P: A person driving her car at 50km/h approaches an intersection just as the traffic light turns yellow. She knows that the...
  12. A

    Calculating Filling Time for a Large Bottle of Water

    Okay, based on your advice I got: 405,836.1 minutes. Is it alright if you check this for me?
  13. A

    Calculating Filling Time for a Large Bottle of Water

    Hi, I just started my school year, and we're currently on Measurements. I need help with this one problem that my teacher assigned. The biggest bottle ever made was 193 gallons (730,505cc). If the bottle were filled with water of a density of 1000 kg/m^3 at the leisurely rate of 1.8 g/min...
Back
Top