A vertical spring with a spring constant 46 N/m is hanging from a ceiling. A sma

Question

A vertical spring with a spring constant 46 N/m is hanging from a ceiling. A small object with a mass 1.7 kg/s then attached. The object is then pulled down and released. The speed of the object when it is 10 cm from the equilibrium position 1.9 m/s. How far down was the object pulled? A) 41.2 cm B) 87.4 cm C) 21.896 cm D) 37.87 cm E) 27.968 cm The density of a certain metal solid is 6.8 times 10^3 kg/m^3 and its Young's modulus is 0.9 times 10^11 N/m^2. What is the velocity of sound in this metal? A) 1958.4 m/s B) 3060 m/s C) 3638 m/s D) 2312 m/s E) 1428 m/s A gasoline engine with an efficiency of 22% operates between a high temperature T_1 and low temperature T_2 = 20 degree C. If this engine operates with Carnot efficiency, what is the high-side temperature T_1? 194.92 degree C 59.4 degree C 489 degree C 102.6 degree C 19.8 degree C Diatomic hydrogen explodes adiabatically to 36 times its original volume before its pressure reduces back to atmospheric pressure. When ignited, what was its initial pressure? 150.9 Atm 216 Atm 77.4 Atm 90 Atm 7.2 Atm What is the first overtone frequency for a 2 m length organ pipe, closed at one end? The speed of sound in air is 333 m/s? 124.9 Hz 52.2 Hz 76.6 Hz 146.16 Hz 19.98 Hz

Explanation / Answer

1. Power Output of bulb = Ae(T4-T40) = 5.67 x 10-8 x 1.2 x 10-4 x 0.4 x 8.917 x 1013 = 24.27 Watts

Hence option C is correct.

As per chegg policy we are allowed to answer 1st question only in case of multiple questions. so please repost the other questions for their answers.

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