Prediction I think that the speed of the cart will decrease as more weight is added on top of the cart. This is because the more weight that is placed on the moving vehicle/object‚ the more downward force is produced. This would increase the friction between the wheels of the cart and the ramp’s surface. The increase in friction would slow down the moving object (cart). Apparatus Trolley/cart- this is essentially a wooden block with wheels and a rubber end‚ to provide the collision with a
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The following is a project made by anonymous: INTRODUCTION The general purpose photoconductive cell is also known as LDR – light dependent resistor. It is a type of semiconductor and its conductivity changes with proportional change in the intensity of light. There are two common types of materials used to manufacture the photoconductive cells. They are Cadmium Sulphide (CdS) and Cadmium Selenide (CdSe). Extrinsic devices have impurities added‚ which have a ground state energy closer to the conduction
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Science in the Big City: Exploring Career Opportunities in the Natural and Physical Sciences New York City May 13-18‚ 2014 Students in the Natural Sciences at the University of Houston-Downtown are generally accomplished and motivated students with strong interests in science. However‚ students typically have a very limited perception of the science careers available to them outside of medicine. To educate students as to the array of potential careers available in the sciences (not medicine)
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Space Definitions Field Vector A field vector is a single vector that describes the strengths and direction of a uniform vector field. For a gravitational field‚ the field vector is g Weight Weight is defined as the force on a mass due to the gravitational field of a large celestial body such as the Earth Gravitational Potential Energy Gravitational Potential Energy is the energy of a mass due to its position within a gravitational field. On a large scale GPE is defined as the work done
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Step 1: The hand holding the the weight in the pendulum will release the weight and allow it to swing forward to hit the car. This is potential energy by the force of motion of the weight on the pendulum. Potential energy is the energy an object produces due to its position. The pendulum swinging is it being in motion therefore it has kinetic energy. The force shown form this could be Applied Force. Applied force is a force that is applied to an object by a person or another object. Step 2: After
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Question 1(10 marks) Comment the following statements (a) The volume coefficient of thermal expansion of water is negative for temperatures in the range 0 to 4 °C. (b) The triple point of water‚ 0.01 °C‚ and 611.73 Pa‚ is one of the primary fixed points on the Kelvin absolute temperature scale. (c) The volume coefficient for the thermal expansion of a solid is twice the linear coefficient for thermal expansion. (d) A temperature of 26.85 °C is the same as 300 K. (e) The surface temperature
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balance (to measure mass of copper wire) 8. Graduated Cylinder 9. Three cylindrical metals (brass‚ aluminum‚ copper‚ zinc‚ etc) 10. Irregular object (lead‚ steel‚ zinc‚ etc) THEORY Density is one of the useful quantities scientists use to identify different materials with‚ given by: Density = Mass/Volume The volume of a cylinder is: V = πr2h To find the volume of an irregular solid‚ we submerge it in a graduated cylinder and measure
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Chapter 19 Nuclear Energy 19.1 Energy in your life Almost everything around us uses electricity and in order to power these devices‚ we must generate it. To create electrical energy‚ we must create thermal energy. Several techniques include using coal‚ natural gas‚ or nuclear thermal to create heat. Once heat is created‚ it is used to vaporize water and use the steam to propel a piston which turns an electric generator. Alternative energy sources include wind‚ solar‚ and micro hydro. 19.2 Nuclear
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The Industrial Revolution changed the way people lived back in the day. During the Industrial Revolution‚ they worked very hard‚ but life was also good in some ways. The Industrial Revolution affected people’s daily lives differently. Some examples include traveling‚ trade‚ communication‚ and immigration. During the Industrial Revolution‚ the traveling system got way easier. Before‚ if people needed to get somewhere‚ they went by horse or by walking. But then‚ steam engines and trains came. Suddenly
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Debate Opening Statement Can we change our impact on the rate of global warming? There are all these campaigns for us to combat global warming and reduce our emissions‚ we have all the science to maybe not stop it but effectively reduce it to stable conditions. It is evident that the temperatures and sea levels are rising and this proves global warming is out there; but it still doesn’t make a difference we still do nothing because Global warming is irreversible; we are so deep
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