Physics, 30.10.2019 20:31 goldenarrow
A66-foot-tall woman walks at 55 ft/s toward a street light that is 2424 ft above the ground. what is the rate of change of the length of her shadow when she is 19 ft19 ft from the street light? at what rate is the tip of her shadow moving? let l be the length of the woman's shadow and let x be the woman's distance from the street light. write an equation that relates l and x.
Answers: 3
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Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?
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A66-foot-tall woman walks at 55 ft/s toward a street light that is 2424 ft above the ground. what is...
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