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### 21 Cards in this Set

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 What is buoyancy when an object is submerged in fluid, a force is created which acts upward and is equal to the weight of the fluid displaced by the volume of the object What is velocity speed of an object moving in a certain direction. velocities add what is the formula to find velocity velocity= distance/time what is the definition of work using a small force over a long distance, you exert a larger force over a short distance what is the formila to find the amount of work needed/done work = (force) x (distance) Work put in equals work coming out. how do you find efficiency efficiency = Wout/Win What is is pressure a force actin on a surface How do you find the amount of pressure pressure = force/area what is hydrostatic pressure pressure in liquids that are not moving , which is caused by gravity how do you calculate hydrostatic pressure hydrostatic pressure + atomspheric pressure =total pressure what are three ways heat can be transferrer conduction, convection, or radiation Explain conduction happens in solids or stationary fluids explain convection occurs in liquids and gasses by circulating currents caused by difference in density do electrical forces increase as the distance between charged particles increases no, they decrease what is a resistor dissipate energy through heat what is a capacitor stores electrical energy between two parallel plates what is an inductor stores magnectic energy what are diodes restricts current only to one direction. A semiconductor is a rectifer what does a rectifier do convers AC to DC transformer userd to conver electricity from one voltage to another how can you calculate the mechanical advantage of a lever MA = effort arm/ resisting arm