Recent content by ZoeGab

  1. Z

    Understanding Kinetic Energy: A Beginner's Guide

    Could you explain this a little further?
  2. Z

    What is the fractional decrease in pressure when a barometer is raised 35m?

    I put it in wrong in my calculator! I just realized this. Thanks for your help!
  3. Z

    What is the fractional decrease in pressure when a barometer is raised 35m?

    take a look at this; where did I go wrong this time ρgh = 1.15kg/m3*9.8*35 = 389.4*10-5 Pa
  4. Z

    What is the fractional decrease in pressure when a barometer is raised 35m?

    here is another way with a different answer change in pressure , ΔP = ρgh where, ρ = density of medium = 1.184 kg/m3 (for air at 250 C) g = acc due to gravity = 9.8 m/s2 h = height change = 35 m => ΔP = 1.184*9.8*35 = 406.112 Pa 1 atm = 101325 Pa => 1 Pa = 1/101325 atm =>...
  5. Z

    Understanding Kinetic Energy: A Beginner's Guide

    How does this sound? I am not sure if this is correct kinetic energy can be changed to electrical energy using a generator, into heat energy using friction or inelastic collisions into electromagnetic radiation by striking certain crystals, into potential energy by lifting an object or...
  6. Z

    What is the fractional decrease in pressure when a barometer is raised 35m?

    I have tried to work this problem in different ways and I have gotten different answers. This was my last attempt but it still does not seem right. 35 m of air at approx 29 gm/mole at 24.1 liter per mole at room temperature weighs 4.2 gram per cm squared. The air pressure at sea level is...
  7. Z

    Understanding Pascal's Principle: Water Dispenser for Pets

    here goes! I am thinking if a given volume of water is taken away then the height of the water in the bottle would be more for smaller surface area of the water in the bowl. This is so confusing just trying to put it into words! I am so confused!
  8. Z

    What is the fractional decrease in pressure when a barometer is raised 35m?

    Help! What is the fractional decrease in pressure when a barometer is raised 35m to the top of a building? (assume that the density of air is constant over that distance)
  9. Z

    Understanding Pascal's Principle: Water Dispenser for Pets

    I can't seem to wrap my ahead around this question! Please help me understand. A water dispenser for pets has an inverted plastic bottle. When a certain amount of water is drunk from the bowl, more water flows automatically from the bottle into the bowl. The bowl never overflows. Explain the...
  10. Z

    Understanding Kinetic Energy: A Beginner's Guide

    I feel that I don't comprehend kinetic energy fully. I am trying to figure out under what conditions would kinetic energy not be conserved using prinicples of physics. Can anyone help me understand this better. Please try and put it in laymans terms because this is all new to me. It will not be...
Back
Top