Question

oe the cureent that passes theoegh each one froen greatest to least and explain Leau that passes (e) Rank the bults based on d) Rank the bultbs based on their brightness from brighnest so dimmest and explain. (Think about what brightness depends on.) Problems. A scientist isperforming an experiment to measure the Coalomb's Law constant &.The scientist builds a very small apparatus shown in the figure, where an insalating ramp is angled at an angke& from the horizontal. Fixed to the base of the ramp is a metal sphere connected to a voltage source. The charge Q on this sphere can be changed by adjusting the voltage source. A smaller ball of mass m is placed on the ramp and given varying charges q. The scientist adjusts the value of Q until the sphere and ball are a certain distance d and in equilibrium. The distance d is the same in all trials n, 9 (a) On the dot below, draw the forces (NOT componemis) acting on the ball at an instant when it reaches equilibrium. The dashed line repeesents the incline and is for reference. b) Use your diagram to write an equation that relates q. Q.m, d and fundamental constants. 11-4 n 2018 cientist performs several trials and plots the two charges q and Q in the gragh belkom. Pay anenicn ko the abels on the axes. 20 (c) Give a physical explanation for the gap in the data between Q - 6 HC and Q - 11 pC Small Charge Large Charge g 9.8 m/s d 0.01 m 1.0x 10 kg (d) Select five different pairs of q and Q values from the scientist's graph and write them in the table above. (e) What two quantities should be plotted that would yield a linear graph? What would the slope of this graph represent? (0) Plot those two quantities on the grid above. Label the axes with appropriate symbols, units, and scales. Draw a best-fit line (g) State the slope of your best-fit line and show how the slope is used to determine the value of the Coulomb's Law Constant k 11-5

Answer 1

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