Recent content by Brittykitty

  1. B

    Final mark?

    Thank you so much :)
  2. B

    Final mark?

    I just have a question that I'm hoping someone can help me with. I just finished a physics course where the final exam weighs at 40% of my final mark while the assignments weight at 60% which =100% total For my assignments I got a terrible 843.99 out of 1,408. I'm not quite sure what I got...
  3. B

    Work done and friction problem

    So it would be -888J?
  4. B

    Work done and friction problem

    What formula would I use to find the work done to overcome friction? I sort of understand but am still a bit confused
  5. B

    Work done and friction problem

    A force of 52 N is applied to a 12 kg mass resting on a bench where the force of sliding friction is 15 N. The work done in overcoming friction while moving the object 24 m is w=fd w=(37N)(24m) w=888J Does this procedure seem correct ? :) Thank you!
  6. B

    Height of stairs

    Thank you so much! :) :) :)
  7. B

    Height of stairs

    2375 J =mgh (65)(9.81)=637.65 2375J/637.65 =3.72?
  8. B

    Height of stairs

    h=(2375J)(9.81) ?
  9. B

    Height of stairs

    m=65 g=(9.81) (h)=? J= 2375 I sort of it get it but still not sure.. terrible at physics
  10. B

    Height of stairs

    Thank you :) so since 2375 J =mg(h) do I need to rearrange it so its h= ?
  11. B

    Height of stairs

    How do I find delta h?
  12. B

    Height of stairs

    I'm not quite sure that I get it :( So when I find the force that will be my height? This is the most confusing question to me lol
  13. B

    Height of stairs

    A 65.0 kg student climbs a set of stairs in 25.0 s with a power output of 95 W. What is the vertical height of the stairs? I came up with the formula: W=P x (delta t) W=95w(25.0s) 2375 Im not sure how this comes in to play: W = mg (delta h) Im really confused :|
Top