The free-fall acceleration on the Mars is 0.376g. Astronauts on the first trip to Mars take along a physical pendulum (a uniform steel bar swings from a pivot at one end with I=1/3 mL²). The steel bar is tailored to have a period of 1.0s on Mars surface at 20°C. Take g = 9.80 m/s² and asteel =1.7x10-5 °C-1 Answer in 5 significant figures (Show your work) What is the length of the steel bar? Answer in 5 significant figures The temperature on Mars surface drop to -153°C at night, what will be the period of the pendulum at night?

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Ideal Gas Law

Ideal gas law states that the product of pressure and volume of a gas directly varies with the product of the number of moles, the universal gas constant, and the temperature of the gas.