A spring scale typically indicates the magnitude of the tension force exerted on its bottom hook. What will the scale read in each of the cases shown in the diagram?





A. 49 N

B. 98 N

C. 196 N

D. Other (specify)


B. 98 N

Physics & Space Science

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Alice bungee-jumps from a bridge above a deep gorge. Bob watches from the bridge. Let event D be Alice’s departure from Bob’s location on the bridge, and event R be her return to Bob’s location on the bridge. Carol observes these events from a a train passing over the bridge, and uses synchronized clocks on the train to measure the time between Alice’s departure and return. Which person’s watch or clocks register(s) a proper time between events D and R?

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A galvanometer has a coil with a resistance of 24.0 ?. A current of 180 ?A causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for 10.0 A, what shunt resistor is required?

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