Physics 207 Review Questions - Final 1. A package is dropped on a conveyer belt that is moving at 3 m/s. Its mass is 15 kg and it has a and a . For what distance is the package skidding before it starts moving smoothly on the belt? 2. A U-shaped tube is exposed to atmospheric pressure on both ends. It contains an amount of mercury. If you were to pour water into the right hand side until it was 12 cm deep (water and mercury don't mix), how far up with the mercury go on the left hand side? ( kg/m3) 3. A conservative force is acting in the x axis. The potential energy associated with this force is: When the particle is located at x = 3 meters, the kinetic energy is equal to 5 J. What is the total mechanical energy (kinetic + potential) of the system? b) Where on the x axis will the force be equal to 0? 4. An object hangs from a scale that is essentially a spring. The scale reads 30 N in air, 20 N when this object is immersed in water, and 24 N when the object is immersed in another liquid of unknown density. What is the density of that other liquid? Physics 207 Review Questions - Final 1. A package is dropped on a conveyer belt that is moving at 3 m/s. Its mass is 15 kg and it has a and a . For what distance is the package skidding before it starts moving smoothly on the belt? 2. A U-shaped tube is exposed to atmospheric pressure on both ends. It contains an amount of mercury. If you were to pour water into the right hand side until it was 12 cm deep (water and mercury don't mix), how far up with the mercury go on the left hand side? ( kg/m3) 3. A conservative force is acting in the x axis. The potential energy associated with this force is: When the particle is located at x = 3 meters, the kinetic energy is equal to 5 J. What is the total mechanical energy (kinetic + potential) of the system? b) Where on the x axis will the force be equal to 0? 4. An object hangs from a scale that is essentially a spring. The scale reads 30 N in air, 20 N when this object is immersed in water, and 24 N when the object is immersed in another liquid of unknown density. What is the density of that other liquid? 5. 500 J of work are done on a gas in a process that decreases the gas's thermal energy by 200 J. How much heat energy is transferred to or from the system? 6. A large ocean liner has an engine with a maximum power of 92 MW at a cruising speed of 32.5 knots. What forward force is exerted on the ship at this speed? (1 knot = 1.852 km/h) m1 r m2 mass 7. Mass 2 is hanging by a string that passes through a hole and is connected to mass 1. Mass 1 moves in a circular motion around the table top which is frictionless. What should the period of motion be for mass such that stays still? 8. The figure shows a thermodynamic process undertake by 120 mg of helium. The temperature at point 1 is 133 ° C. The molar mass of He is 4 g/mol. 2 pressure 5P1 isotherm P1 1 3 A. Determine the pressure, 1000 cm 3 temperature, and volume of the gas volume at points 1, 2, and 3. B. Find the work done on the gas during each of the three transitions 3 5. 500 J of work are done on a gas in a process that decreases the gas's thermal energy by 200 J. How much heat energy is transferred to or from the system? 6. A large ocean liner has an engine with a maximum power of 92 MW at a cruising speed of 32.5 knots. What forward force is exerted on the ship at this speed? (1 knot = 1.852 km/h) m1 r m2 mass 7. Mass 2 is hanging by a string that passes through a hole and is connected to mass 1. Mass 1 moves in a circular motion around the table top which is frictionless. What should the period of motion be for mass such that stays still? 8. The figure shows a thermodynamic process undertake by 120 mg of helium. The temperature at point 1 is 133 ° C. The molar mass of He is 4 g/mol. 2 pressure 5P1 isotherm P1 1 3 A. Determine the pressure, 1000 cm 3 temperature, and volume of the gas volume at points 1, 2, and 3. B. Find the work done on the gas during each of the three transitions 3