When a liquid is heated in a glass flask, its level at first falls then rises. Explain this observation.

  1. When a liquid is heated in a glass flask, its level at first falls then rises. Explain this observation.
  2. A cart of mass 30Kg is pushed along a horizontal path by a horizontal force of 8N and moves with a constant velocity. The force is then increased to 14N

a) the resistance to the motion of the cart

b) the acceleration of the cart

please name the formulas used in the calculation

1. When the glass flask is heated, it expands increasing in its volume. The increase involume makes the volume of the water to decrease or fall. A continuous heating willmake the water to expand…

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