7. Calculate how much energy can be produced by the complete annihilation of 1.0 kg of mass. How much would the rest energy in question 2 cost at the typical utility price of $0.12/kWh? 8. What is the wavelength of 1.0 kg object moving at 4.5 m/s. 9. It is reasonable to assume that 4 L of gasoline produces 1.05 x 108] of energy and that this energy is sufficient to operate a car for 30.0 km. An Aspirin tablet has a mass of 325 mg. If the Aspirin could be converted completely into thermal energy, how many kilometers could the car go on a single tablet? 10. Compare and contrast the photoelectric effect and the Compton effect