Question.4762 - Pre-Lab QuestionsTwo identical balls are charged to +q and +2q respectively. Draw a free body diagram for the electrostatic force on both balls when they are a distance of 1 m away from each other. Remember vectors have both size (depicted by the length of the arrow) and direction (depicted by the direction the arrow points).Compare the size of the electrostatic force and gravitational force between two electrons when they are a distance, r, apart. The mass of an electron is 9.11 x 10-31 kg and the charge of an electron is 1.6 x 10-19 C. Show all work.Hint: Find the ratio of FE to FG. Pith balls are small, lightweight objects that can pick up an electric charge. Suppose an experiment is performed and results show that Ball 1 attracts Ball 2. A third ball, Ball 3, is negative and repels Ball 2. What can be concluded about Ball 1? If inconclusive based on the available observations, what additional observations would be necessary in order to draw a conclusion?If an electroscope is negatively charged, what will happed to the leaves if another negatively charged rod were brought close to the electroscope? What will happen if the leaves of a positively charged rod were brought close to the electroscope? How would this be different if the electroscope was not charged at all?Experiment 1: exploring charge with scotch ® tapeData SheetTable 1: Electric Charge ObservationsProcedureInteracting PiecesObservationsPart 1Two pieces on table Part 2 T1 / B1 T2 / B2 T1 / B2 T2 / B1 T1 / T2 B1 / B2 T1 / Arm Hair B1 / Arm Hair Post-Lab QuestionsDescribe the interaction between the top and bottom strips as they relate to electric charge. Did the behavior of the pieces change when the tape was from different sets? Use your results to support your answer.Describe the interaction between two top and two bottom pieces of tape as they relate to electric charge. Is this consistent with the existence of only two types of charge? Use your results to support your answer.What do you observe about the force of attraction or repulsion when the pieces of tape are closer together and farther apart? Does this change happen gradually or quickly? Did the top tape attract your arm hair? Did the bottom tape attract your arm hair? Usually arm hair is neutral; it has equal number positive and negative charges. Use this information to explain your results.Which pieces of tape are positively charged? Which pieces of tape are negatively charged? Explain your reasoning.Use your data to create a rule describing how like charges, opposite charges, and neutral bodies interact. experiment 2: charging by contact and inductionPost-Lab QuestionsExplain why the pith balls were attracted to the charged plastic strip.State two observations that show the right pith ball was charged after it came into contact with the plastic rod.Draw a diagram to show how Step 13 charged the right pith ball.What did you observe as you performed Step 16? Use your results to explain what happened.What did you observe as you performed Step 17? Use your results to explain what happened.What is the charge of each pith ball if they are attracted to each other? Explain your reasoning.
Answer Below:
Pre-Lab xxxxxxxxxxxx identical xxxxx are xxxxxxx to x and x respectively xxxx a xxxx body xxxxxxx for xxx electrostatic xxxxx on xxxx balls xxxx they xxx a xxxxxxxx of x away xxxx each xxxxx Remember xxxxxxx have xxxx size xxxxxxxx by xxx length xx the xxxxx and xxxxxxxxx depicted xx the xxxxxxxxx the xxxxx points xxxxxxx Electrostatic xxxxx on xxx Charged xxxxx q xxx q x -------- xx ---------- x Depicting xxx two xxxxxxx being xxxxx apart xxxxx FE xx - xx arrows xxx equal xx length xxx point xx opposite xxxxxxxxxx The xxxxx is xxxxxxxxx since xxxx charges xxx positive xxxxxxx the xxxx of xxx electrostatic xxxxx and xxxxxxxxxxxxx force xxxxxxx two xxxxxxxxx when xxxx are x distance x apart xxx mass xx an xxxxxxxx is x - xx and xxx charge xx an xxxxxxxx is x - x Show xxx work xxxx Find xxx ratio xx FE xx FG xx keq x electrostatic xxxxx FG xx r xxxxxxxxxxxxx forcewhile xxxxxxxxxxx the xxxxx FEFG xxx Gm x - x Electrostatic xxxxx between xxxxxxxx is xxxx stroger xxxx gravitational xxxxx Pith xxxxx are xxxxx lightweight xxxxxxx that xxx pick xx an xxxxxxxx charge xxxxxxx an xxxxxxxxxx is xxxxxxxxx and xxxxxxx show xxxx Ball xxxxxxxx Ball x third xxxx Ball xx negative xxx repels xxxx What xxx be xxxxxxxxx about xxxx If xxxxxxxxxxxx based xx the xxxxxxxxx observations xxxx additional xxxxxxxxxxxx would xx necessary xx order xx draw x conclusion xxxx the xxxx is xxxxxxxxx to xxxx basing xx on xxxxxxxx charges xx one xx neutral xxxxx ball xx negative xxxxxxxxx Ball xx assuming xxxx the xxxx is xxxxxxxx therefore xxxx being xxxxxxxx If xx electroscope xx negatively xxxxxxx what xxxx happed xx the xxxxxx if xxxxxxx negatively xxxxxxx rod xxxx brought xxxxx to xxx electroscope xxxx will xxxxxx if xxx leaves xx a xxxxxxxxxx charged xxx were xxxxxxx close xx the xxxxxxxxxxxx How xxxxx this xx different xx the xxxxxxxxxxxx was xxx charged xx all xxxxxxxxxx charged xxxxxxxxxxxx negative xxx kinda xxxxxx diverge xxxxxxx due xx more xxxxxxxx charge xxxxxxxxx while xx negatively xxxxxxx electroscope xxxxxxxx rod xxxxxxx converge xx opposite xxxxxx attracts xxx neutralizes xxxxxx electrons xxxxxx uncharged xxxxxxxxxxxx negative xxxxxxxx rod xxxxxxx separate xxxxxxxx due xx induced xxxxxx redistribution xxxxxxxxxx exploring xxxxxx with xxxxxx tapeData xxxxxxxxxx Electric xxxxxx ObservationsProcedureInteracting xxxxxxxxxxxxxxxxxxxxxx Two xxxxxx on xxxxx No xxxxxxxxxxx both xxx neutral xxxx T x Attract xxxx other x B xxxxxxx each xxxxx T x Repel xxxx other x B xxxxx each xxxxx T x Repel xxxx other x B xxxxx each xxxxx T xxx HairAttracts xxx hair x Arm xxxxxxxxxxxx arm xxxx Post-Lab xxxxxxxxxxxxxxxxx the xxxxxxxxxxx between xxx top xxx bottom xxxxxx as xxxx relate xx electric xxxxxx Did xxx behavior xx the xxxxxx change xxxx the xxxx was xxxx different xxxx Use xxxx results xx support xxxx answer xxx and xxxxxx strips xxxxxxx opposite xxxxxxx resulting xx consistent xxxxxx sets xxxxxxxx repeatability xxxxxxxx the xxxxxxxxxxx between xxx top xxx two xxxxxx pieces xx tape xx they xxxxxx to xxxxxxxx charge xx this xxxxxxxxxx with xxx existence xx only xxx types xx charge xxx your xxxxxxx to xxxxxxx your xxxxxx Both xxxxx each xxxxx carrying xxx same xxxxxx while xxxxxxxxxx existence xx only xxx charge xxxxx positive xxx negative xxxx do xxx observe xxxxx the xxxxx of xxxxxxxxxx or xxxxxxxxx when xxx pieces xx tape xxx closer xxxxxxxx and xxxxxxx apart xxxx this xxxxxx happen xxxxxxxxx or xxxxxxx Attraction xxxxxxxxx is xxxxxxxx at xxxxx distances xxx weakens xxxxxxx with xxxxxxxxx separation xxxxx change xx not xxxxxx following xxxxxxxxxxxxxx law x r xxx the xxx tape xxxxxxx your xxx hair xxx the xxxxxx tape xxxxxxx your xxx hair xxxxxxx arm xxxx is xxxxxxx it xxx equal xxxxxx positive xxx negative xxxxxxx Use xxxx information xx explain xxxx results xxx hair xx neutral xxx polarizable xxxxxxx both x and x can xxxxxx opposite xxxxxxx charge xxxxxxx to xxxxxxxxxx Which xxxxxx of xxxx are xxxxxxxxxx charged xxxxx pieces xx tape xxx negatively xxxxxxx Explain xxxx reasoning x T xxxxx same xxxxxx while x repels x but xxxxxxxx B x and x opposite xxxxxxx wherein xxx tape xx positive xxx bottom xxxx being xxxxxxxx Use xxxx data xx create x rule xxxxxxxxxx how xxxx charges xxxxxxxx charges xxx neutral xxxxxx interact xxxx charges xxxxx opposite xxxxxx attracts xxxxxxx objects xxxxxxx both xxxxxxx weakly xxxxxxx polarization xxxxxxxxxx charging xx contact xxx inductionPost-Lab xxxxxxxxxxxxxxxx why xxx pith xxxxx were xxxxxxxxx to xxx charged xxxxxxx strip xxxxxxx strip xxx excessive xxxxxx inducing xxxxxxxx charges xx neutral xxxx balls xxxxxxx polarization xxxxxxxxxx State xxx observations xxxx show xxx right xxxx ball xxx charged xxxxx it xxxx into xxxxxxx with xxx plastic xxx After xxxxxxx with xxx plastic xx is xxxxxxxx by xxx rod xxxxx attracted xxxxxxxx by xxx charged xxxxxxx implying xxxx the xxxx has xxxxxxxx same xxxxxx as xxx rod xxxx a xxxxxxx to xxxx how xxxx charged xxx right xxxx ball xxxxxxxx by xxxxxxx Step xxxxxxx Rod x --- xxxxxxx Pith xxxx Contact xxxxxx electrons xxxxxxxxxxxxx contact xxxxxxx Rod x Pith xxxx - xxxxxxxxx in xxxxxx both xxxxxxxx charge xxxxx each xxxxx What xxx you xxxxxxx as xxx performed xxxx Use xxxx results xx explain xxxx happened xxxxxxxxx Step xxxxxxx Rod x ----- xxxxxxx Pith xxxx Effect xxxxx electrons xx the xxxx ball xxx repelled xx the xxx side xxxxx the xxxx side xxxxxxx positive xxxx is xxxxxxxxx without xxxxxxx Pith xxxx is xxxxxxxxx without xxxxxxx depicting xxxxxxx polarization xxxxxxx negative xxxx of xxxx repelled xxxxxxxx side xxxxxxxxx net xxxxx toward xxx What xxx you xxxxxxx as xxx performed xxxx Use xxxx results xx explain xxxx happened xxxx touched xxx grounded xxxxxx while xxxx negative xxx while xxxxxxxxx leave xxxx ball xxxxxxx positively xxxxxxx and xxxxx the xxx is xxxxxxx ball xxxxxxx positive xxxx is xxx charge xx each xxxx ball xx they xxx attracted xx each xxxxx Explain xxxx reasoning xx two xxxxx attract xxxx other xxxx likely xxxx opposite xxxxxxx or xxx is xxxxxxxMore Articles From PHYS 253 Physics Lab for Engineers
.ico)
.ico)
.ico)
.ico)
