Details Title: Buoyancy, heat, and electrons Description: PSC 1121 Total Flash Cards: 27 Created: 04/14/2009 18:14:09		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Physics Flashcards
Cards in this set: Term kq1q2 r2 Definition coulomb force between two charges Term kq r2 Definition electric field of a single charge Term Heat gain/ heat loss formula Definition mcΔT Term Generic pressure formula Definition force/area Term Equation of state for an ideal gas Definition PV/T= nR; PV=nRT Term Definition of Density Definition mass/volume Term Measuredin Pascals, i.e. Newtons/m2 Definition Force/area Term Thermal expansion Definition α L ΔT Term -      + -      + -      + -      + -      + -      + What is the direction fo the electric field lines in between the two plates? Definition leftward Term -      + -      + -      + -      + -      + -      + A proton in between the two plates will tend to accelerate in which direction? Definition leftward Term Two charged objects are very, very far from any other charges. if the charge on one of them is changed in sign, the electric force between them Definition reverses in direction. Term The shape of an electric field changes, perhaps, but one thing is for sure: Definition where field lines are closely packed, the field is relatively strong. Term If the signs of the charges on two charged objects are both reversed, the electric force between them Definition does not change. Term The electric charge on an electron ______ that on a proton. Definition has the same size but the opposite sign as Term The electric field around an isolated positive charge Definition points outward. Term Weight force means Definition weight/gravity Term Upward force is Definition gravity - weight force Term Heat is the Definition thermal energy that is transferred from one object to another. Term How many joules are equivalent to 21 calories? Definition 88 Term A calorie is defined to be the amount of heat required to raise the temperature of Definition 1 gram of water by 1° C. Term In conduction, thermal energy is transported by Definition the collisions of particles. Term In convection, thermal energy is transported by Definition the movement of a fluid. Term   In radiation, thermal energy is transported by Definition electromagnetic fields. Term The constant is Definition cal/g°C Term   A positively charged object repels Definition positively charged objects. Term The electric force on a negative charge located near an isolated positive charge Definition points toward the isolated charge. Term Two parallel plates have equal but opposite charges. The electric force on a negative charge placed near the center of the plates is Definition perpendicular to the plates and points toward the positive one.