Recent content by C0balt

  1. C0balt

    Understanding Electrical Circuits and Power: Questions 10&11

    Homework Statement Questions 10&11 in pictures. Homework Equations P=IV W=VIt W=Pt The Attempt at a Solution For 10a) P=IV P=70*14= 980W. 10b) P=IV 1500=12*I I=125A (which is massive so probably wrong) 10c)P=IV 60=I*12 I=5A The 8A fuse because the current flowing through each headlamp should...
  2. C0balt

    Upthrust/ how does the weight of a sphere change in water?

    Um before
  3. C0balt

    Upthrust/ how does the weight of a sphere change in water?

    Homework Statement See image attached. Oh it's part c by the way. Homework Equations maybe upthrust=weight of water displaced... None really relevant. The Attempt at a Solution I thought the balance would initially go up as the sphere entered the water, (but maybe slightly less than the...
  4. C0balt

    How does momentum conservation apply to a system with two interacting objects?

    Thank you☺️
  5. C0balt

    How does momentum conservation apply to a system with two interacting objects?

    Ah so I need to find the change in momentum of the blue line, B?
  6. C0balt

    How does momentum conservation apply to a system with two interacting objects?

    well the resultant force is the change in momentum/time interval. So for part a, would I find the change in momentum for truck a?
  7. C0balt

    How does momentum conservation apply to a system with two interacting objects?

    Could you give me some hints at how to answer Q12 part a please?