Recent content by dan_and_sim

  1. D

    Velocity of the car as a function of time

    Homework Statement A car of mass m = 1250 kg is accelerated from rest by a constant power P = 135 kW. The car is moving along a straight line. Neglecting air resistance and friction, show that the velocity of the car as a function of time is given by v(t) = sqrt 2Pt/m then How would...
  2. D

    Thermal expansion of a copper cylinder

    Homework Statement A copper cylinder is initially at 20.0 degrees c At what temperature will its volume be 0.150 % larger than it is at 20.0 degrees c Homework Equations delta v = Beta vo (delta T) dv= beta vo dtThe Attempt at a Solution ive found an answer of 49.41 degrees c I believe its...
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