6. Robin fills a bathtub and then drains it. Use the following information to draw a graph of the water level in the bathtub over time. The water level starts at 0 cm. After Robin turns on the taps, the water level rises at a rate of 0.11 cm/s for 60 s. Robin turns off the tap after about 60 s. The water level is constant for another 60 s. Then Robin pulls the plug, and the water level drops at a rate of 0.29 cm/s until the tub is empty.

Q: A geologist is keeping track of the erosion or an island. The length of the island is changing at a…

A: Rate of change of length of island = 14 inchesyearsChange in the length of the island = 168…

Q: A boy started one hour and twenty minutes earlier than a man. If the man travels at 6 kph faster…

A: Here we have to use the formula of speed. Speed=distance time

Q: Pie 72. The rates of increase in the population of a country during the last 3 decades are 10%, 20%…

A: Rates of increase in population :  In first decade=10% In second decade=20% In third decade =30%

Q: A rock is thrown into a still pond. The circular ripples move outward from the point of impact of…

A: For the circle, let r� be its radius. Then, its area is given by: A=πr2.�=��2. Differentiating this…

Q: A man 6 ft tall is walking at the rate of 3 ft/sec toward a streetlight 20 ft high. At what rate (in…

A:

Q: A thermometer is removed from a room where the temperature is 70° F and is taken outside, where the…

A:

Q: The rate of change of the temperature of a building is 7° /hr when the temperature is 12°. What is…

A: The rate of change of temperature per hour = 7o   The rate of change of temperature in 30 min or…