17. A simple ("crude") barometer is made of a U-shaped tube filled with mercury and closed from one side, as shown in the associated picture. On a sunny day, a student measured the distance between the surfaces of the mercury in the tube as H=29.97 inches. What is the atmospheric pressure expressed in Pascals (Pa) that day? The density of mercury is 13.56 grams per cubic centimeter. Crude Barometer Vacuum -> Atmospheric Pressure H Mercury18. A satellite of mass 500 kg is placed in an orbit of radius 5 times the radius of the Earth, i.e. the distance between the satellite and the center of the Earth is equal to 5 Earth radii. The radius of the Earth is 6.37 x 10 m, the Earth mass is 5.98 x 1024 kg. a. Calculate the centripetal force experienced by the satellite. b. Calculate the satellite velocity.8. A copper shot is heated to 950C and placed in an aluminum calorimeter of mass 70 g, which contains 120 g of water initially at 20oC. The final temperature of the shot, water, and the calorimeter is 350C. Specific heat of copper is 0.093 cal/g oC, specific heat of aluminum is 0.217 cal/g oC, and specific heat of water is 1 cal/g oC. What is the mass of the copper shot?11. A 50-kg student is saving his friend from falling from the cliff by equilibrating the seesaw, as shown in the associated figure. Find the mass of the student's friend. 3m- 2m m=50 kg 11 m=