Recent content by accol

  1. A

    Calculating Battery Internal Resistance: V=IR Method

    1. A battery is manufactured to have and emf of 24V, but the terminal voltage is only 22V when the battery is connected across a 7.5ohm resistor...what is the internal resistance of the battery? 3. Ok I have the answer already which is .68ohm...but I can't find a way to get to it. At...
  2. A

    Calculating Particle Deceleration and Force | MCAT Physics Question 17

    Lol, wow...and I thought I was doing it all wrong, I just put the wrong numbers into the calculator. Thanks
  3. A

    Calculating Particle Deceleration and Force | MCAT Physics Question 17

    1. http://www.prep101.com/MCAT/102MCATPhysicsAnswers.pdf number 17 3. Here is my attempt: First I figure I have to find the deceleration of the particle. So I plugged it into the v(final)^2= v(initial)^2 + 2ax. I solved for a and got a and got -240000. I don't know if I am...
  4. A

    Solve Doppler Effect Question 15: Find the Frequency Shift

    1. http://www.prep101.com/MCAT/102MCATPhysicsAnswers.pdf number 15 2. As you can see I already have the answers, I think I'm just doing something wrong. 3. I already know that the answer will be 'away' making it either a or c. So first I plugged the equation given (f1 =...
  5. A

    I solving three problems (2 for friction, 1 in hooke's law)

    Dude thanks so much...I have trouble remembering all the little substitutions you've showed me. Thanks
  6. A

    I solving three problems (2 for friction, 1 in hooke's law)

    1. http://www.prep101.com/MCAT/102MCATPhysicsAnswers.pdf Numbers 4 7 and 14 2. As you can see the answers are already available, I'm just having trouble trying to get to them. 3. For number 4 I've tried plugging in the k value (8000) and distance (.05) into get a force value...