- 7. Tyler rows 10 km downstream in 2 h. On the return trip, it takes him 4 h to travel 8 km . Determine his average rowing speed and the speed of the current.
- Use the following information to answer the next question. Every two weeks, the Earth receives 4.92times 10^32J of solar energy. This is equivalent to the energy stored in all the coal, oil, and gas reserves on Earth Unlike these non-renewable resources, solar energy is a pollution-free way of generating electricity. Sunlight is used to heat water, eventually converting it to steam. For H_(2)O:c=4.19J/g^circ C. 1. By how many degrees would 1000 J of sunlight raise the temperature of 15.0 g of water, correct to three significant digits? Show your formulas and all of your work (3 marks).
- How far can a car travel on 60 liters of fuel if it has a fuel efficiency of 8L/100km A. 4.8 km B. 480 km C. 750 km D. 4800 km
- Numerical Response (1 mark) 1. The minimum amount of heat energy required to completely evaporate 150 g of water expressed in scientific notation , is btimes 10^ast J. If the heat of fusion of water is 6.01kJ/mol and water's heat of vaporization is 40.65kJ/mol, what is the value of b correct to three significant digits? (Record your answer in the box on the right).
- Question 9 (1 point) A vehicle with a fuel efficiency of 7L/100km travels 500 km. How much fuel does it consume? A. 30 liters B. 35 liters C. 40 liters D. 45 liters
