revolutions per minute. How fast is the beam of light moving along the shorelinewhen it is 1 km from P? (Round your answer to one decimal place.)141.4 141.4km/min

Solution or ExplanationClick to View Solution7.1/1 points | Previous AnswersSCalcET7 3.9.045.A runner sprints around a circular track of radius 120 m at a constant speed of 7 m/s. The runner'sfriend is standing at a distance 240 m from the center of the track. How fast is the distance between thefriends changing when the distance between them is 240 m? (Round your answer to two decimalplaces.)

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12/14/16, 3)59 PMhw17S3.9Page 6 of 78.1/1 points | Previous AnswersSCalcET7 3.9.046.The minute hand on a watch is 7 mm long and the hour hand is 5 mm long. How fast is the distancebetween the tips of the hands changing at one o'clock? (Round your answer to one decimal place.)

Solution or ExplanationClick to View Solution9.2/2 points | Previous AnswersA ladder 22 feet long leans against a wall and the foot of the ladder is sliding away at a constant rate of3 feet/sec. Meanwhile, a firefighter is climbing up the ladder at a rate of 2 feet/sec. When the firefighter