science help?

posted by .

no table and no diagram for this question
a)What speed would water have to drop below to deposit a 250μm diameter grain of sediment?......... answer to unit ms^-1


b)What speed would water have to drop below to deposit a 500μm diameter grain of sediment?...........answer to unit ms^-1

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physcial science

    When a thermometer is placed in a beaker of hot water, WHY does the mercury level DROP, then rise?
  2. Science

    A drop of ink is in a tube.A stopper is used.What will happen to the drop of ink in the tube when you place your hands around the flask for 5 minutes?
  3. physics

    I did a projectile motion lab, predicting where a ball would land before actually dropping it. I have to answer this question: you accounted for variations in the velocity measurement in your range prediction. Are there other measurements …
  4. physics

    A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 7840 N/C. The mass of the water drop is 3.84 10-9 kg. (a) Is the excess charge on the water drop positive …
  5. physics

    An open-topped tank completely filled with water has a release valve near its bottom. The valve is 1.63 m below the water surface. Water is released from the valve to power a turbine, which generates electricity. The area of the top …
  6. physics

    water at 20°C has viscosity n=1.0*10^-3 Ns/m^2. sand grains have density 2400kg/m^3. suppose a 1.1 mm diameter sand grain is dropped into a 51m deep lake whose water is a constant 20°C. If the sand grain reaches terminal speed almost …
  7. Physics Correction

    You drop a ball from a window on an upper floor of a building and it is caught by a friend on the ground when the ball is moving with speed vf. You now repeat the drop, but you have a friend on the street below throw another ball upward …
  8. science help?

    a)What speed would water have to drop below to deposit a 250μm diameter grain of sediment?
  9. help ??????????????????

    no table and no diagram for this question a)What speed would water have to drop below to deposit a 250μm diameter grain of sediment?
  10. Chemisty

    A 5 μL drop of compound X, a 7 μL drop of compound Y, and a 15 μL of compound Z are placed in a closed container with 5 mL water and 2.5 mL air. The system is equilibrated at 25°C. Determine the fraction of the total …

More Similar Questions