1. Dismiss Notice
  2. Hey Guest! Check out the 3 MCAT Study Plan Options listed in the 'stickies' area at the top of the forums (BoomBoom, SN2ed, and MCATJelly). Let us know which you like best.

    Also, we now offer a MCAT Test-Prep Exhibitions Forum where you can ask questions directly from the test-prep services.
    Dismiss Notice
  3. This forum is for support and discussion only. Please promote test prep materials/services (including AMAs) in the Special Offers subforum only. Thanks!
    Dismiss Notice
Dismiss Notice

Interview Feedback: Visit Interview Feedback to view and submit interview information.

Interviewing Masterclass: Free masterclass on interviewing from SDN and Medical College of Georgia

PS question on AAMC 5

Discussion in 'MCAT: Medical College Admissions Test' started by phatty925, Aug 3, 2002.

  1. phatty925

    phatty925 Senior Member
    7+ Year Member

    Joined:
    Apr 23, 2002
    Messages:
    124
    Likes Received:
    3
    IN THE PHYSICAL SCIENCES SECTION:

    #104) why can the answer not be B? is it because in that case, the oxidation state of Cd would change from +2 to +1?

    #130) the solutions manual uses the equation x=1/2at^2 to figure out the time the snowball is in the air. however, since we're trying to figure out how long the snowball is in the air during its horizontal flight, how come the manual uses 20 meters (the vertical height of point A) for the value of x?

    thanks!
     
  2. Mudd

    Mudd Charlatan & Trouble Maker
    7+ Year Member

    Joined:
    Jun 5, 2002
    Messages:
    376
    Likes Received:
    2
    Exactly correct on 104. There is nothing in solution to reduce Cd from +2 to +1, so it remains a dication.

    On #130, the range of the object is found by multiplying the horizontal velocity by the flight time. The flight time depends on the y-component, which has a height of 20m, which leads to a t = 2s. They simply found range by using the given horizontal velocity of 25 m/s and the time of 2s.
     
  3. phatty925

    phatty925 Senior Member
    7+ Year Member

    Joined:
    Apr 23, 2002
    Messages:
    124
    Likes Received:
    3
    so does the flight time always depend on the vertical displacement (height)?
     
  4. Mudd

    Mudd Charlatan & Trouble Maker
    7+ Year Member

    Joined:
    Jun 5, 2002
    Messages:
    376
    Likes Received:
    2
    When there is a uniform force acting on the object is in the y direction, then yes. In the case of projectile motion and free fall, that's the case.
     

Share This Page