Recent content by J0hnnyD

  1. J

    Problem on my Final. pulling box with rope problem

    I thought to get the force of friction its always µk*N. what is the normal force then? mg minus the y component of the force of the rope?
  2. J

    Problem on my Final. pulling box with rope problem

    Homework Statement A student pulled a box of books weighing 68kg by a rope at an angle of 58 degrees above the horizontal plane of the floor. The floor has a coefficient of kinetic friction of µk=.27. What is the acceleration of the box of books? Homework Equations ∑F = ma Force...
  3. J

    How Do You Calculate Absolute Pressure at a Depth Using Bubble Size Changes?

    I simplified it to P1V1=P2V2 and solved for P1 and got the answer. Anyone know how to find the depth of the diver given all these variables?
  4. J

    How Do You Calculate Absolute Pressure at a Depth Using Bubble Size Changes?

    Problem: An air bubble originating froman under water diver has a radius of 5 mm at some depth h. When the bubble reaches the surface of the water, it has a radius of 7.4 mm. Assuming the temperature of the air in the bubble remains constant, determine the abso- lute pressure at this...