Arock climber is about to haul up 100 n (about 22.5 lb) of equipment that has been hanging beneath her on 40 m of rope weighing 0.8 n/m. how much work will it take to lift all this? ? 8) a vertical cylindrical tank measures 30 ft high and 20 ft in diameter. it is full of kerosene weighing 51.2 lb/ft. how much work (ft-lb) does it take to pump the kerosene to the level of the top of the tank (i. e to pump all the kerosene out the top of the tank).

In a laboratory, nakisha mixes sodium hydroxide solution with an indicator called phenolphthalein. when combined, they create a pink solution. nakisha wonders if mixing other solutions with phenolphthalein will also create this pink color. how could she use the scientific inquiry process to explore it further?

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.