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    Plate tectonics - Wikipedia, the free encyclopedia
  • Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός " ... 3 Types of plate boundaries. 3.1 Transform (conservative) boundaries ...
  • http://en.wikipedia.org/wiki/Plate_tectonics
  • 2.
    Plate - Wikipedia, the free encyclopedia
  • Plate (dishware), a broad, mainly flat vessel on which food is served ... Wall plate, vertical building-construction component ...
  • http://en.wikipedia.org/wiki/Plate
Questions/Answers
How to hang a very large plateon the wall?
I have a beautiful ceramic plate I would like to hang on a wall, but I can't find a device capable of holding such a large plate. The plate is 22" in diameter in 4" deep. It weights about 20 lbs. I have spent hours searching the net and I have found plenty of plate holders, but none that hold a plate this large. Does anyone know of a device I can buy? Or is there something I can make? Some restrictions: * I don't want to glue anything to the plate * I don't want to build a shelf on the wall I am essentially looking for a solution similiar to the standard wire hangers made to use small plates. Any help is greatly appreciated!
What about two large rubber coated hooks, like for hanging bicycles, you can place one at 4 o clock, and one at 8 o clock, you will need a stud finder, or very small nails to find the studs in the wall. Also it might be a good idea to check for electrical wires, there is a similar decice to a stud finder for that purpose.... Since the screws will go deep. I would opt for either a black or white one to compliment the plates colors.
What causes plate tectonics,in other words what causes theplates to move?
What causes plate tectonics, in other words what causes the plates to move?
Earth’s center, or core, is very hot, about 9000 degrees F. This heat causes molten rock deep within the mantle layer to move. Warm material rises, cools, and eventually sinks down. As the cool material sinks towards the Earth’s core it is warmed and rises to the top again. This type of movement is called a convection cell. We used to assume that Earth’s plates just surfed on top of the mantle’s giant convection cells, but now scientists believe that the plates themselves play an important role in the convection process. How can plates play an active part in the convention process instead of just surfing along? Just like convection cells, plates have warmer, thinner parts that are more likely to rise, and colder, denser parts that are more likely to sink. New parts of a plate rise because they are warm and thin. As hot magma rises to the surface at spreading ridges and forms new crust, the new crust may actively push the rest of a plate out of its way. This is called ridge push. Old parts of a plate are likely to sink down into the mantle at subduction zones because they are colder, thicker and denser than the warm mantle material underneath them. This is called slab pull.
What is the charge Q on thepositive plate of thecapacitor?
A parallel-plate capacitor with plates of area 420 cm2 is charged to a potential difference V and is then disconnected from the voltage source. When the plates are moved 0.3 cm farther apart, the voltage between the plates increases by 100 V. (a) What is the charge Q on the positive plate of the capacitor? (b) How much does the energy stored in the capacitor increase due to the movement of the plates?
ε₀=8.854e-12 C²N⁻¹m⁻² S=0.042 m² Δd=0.003 m ΔU=100 V d=initial distance between the plates U=initial voltage between the plates Q=charge on the positive plate (a) C=ε₀S/d is the initial capacitance of the parallel-plate capacitor C1=ε₀S/(d+Δd) is the capacitance after moving the plates U=Q/C U+ΔU=Q/C1 is the voltage after moving the plates ==> Qd/(ε₀S)+ΔU=Q(d+Δd)/(ε S) ==> ΔU=Q*Δd/(ε₀S) Q=ε₀S*ΔU/Δd Q=8.854e-12*0.042*100/0.003=12 .4e-9 C (b) W=0.5QU initial energy W1=0.5Q(U+ΔU) ΔW=W1-W=0.5Q*ΔU=0.5*12.2e-9* 100 ΔW=0.62e-6 J
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