1. Math
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  3. hello i need help with the following i only need...

Question: hello i need help with the following i only need...

Question details

Hello, I need help with the following:

I only need help with number 2 and 3.

of her shadow on the building changing when she is 4m from 1. (O points) A 24-ft conical water tank with a downward-the building? (HINT: Use similar triangles formed between the pointing vertex has a radius of 10 ft at its top. If water flowsspotlight and the woman, and between the spotlight and the into the tank at a rate of 20 cubic ft/min, how fast is the depth of the water increasing when the water is 16 ft deep? wall.) Answer: m/s (HINT: In your picture, let r be the radius of the surface of the water, let h be the height of the water, and let V be the vol ume of the water. You must find dh/dt when h is 16, but you do not know r and drldt when h is 16. Use similar triangles to find these quantities.) 4. (0 points) When air expands adiabatically (without gain ing or losing heat), its pressure P and volume V are related by the equation PV14 C where C is a constant. Suppose that at a certain instant, the volume is 410 cubic centimeters, and the pressure is 95 kPa and decreasing at a rate of 11 kPa/minute. At Answer: ft/min 2. (1 point) A kite 50ft above the ground moves horizontallywhat rate is the volume increasing at this instant? (Hint: The at a speed of 4f/s. How fast is the angle between the string andleft-hand side of the related variables equation is a product.) the horizontal changing when 300ft of string has been let out? Answer: cubic cm per min Answer radians/sec 3. (1 point) A spotlight on the ground is shining on a wal(For your information, Pa stands for Pascal, which is equiv- 20m away. If a woman 2m tall walks from the spotlight to alent to one Newton per square meter; kPa is a kiloPascal or ward the building at a speed of 1.2m/s, how fast is the length 1000 Pascals.) Generated by WeBWor, http:/webwork.maa.ong, Mathematical Association of America

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