Warm Up #3 Convert: 25 cs = _ ms 500daL = _ kL 60.54 kg = ___ mg? Place answer in scientific notation. Can you think of any OTHER metric units, other.

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Warm Up #3 Convert: 25 cs = ___ ms 500daL = ___ kL kg = ___ mg? Place answer in scientific notation. Can you think of any OTHER metric units, other than the ones discussed yesterday? (think really big or really small) What do you do with exponents when you are: – Adding/Subtracting – Multiplying/Dividing

Scientific Notation: Your Sig Fig Savior Scientific Notation – way of making REALLY big or REALLY small numbers easy to read. General Form: M x 10 n M = number between 1 and 10 n = number of decimal places you move

Review: WITH NUMBERS WAY BIGGER THAN 1 MOVE DECIMAL TO THE LEFT n VALUE WILL BE A POSITIVE NUMBER WITH NUMBERS WAY SMALLER THAN 1 MOVE DECIMAL TO THE RIGHT n VALUE WILL BE A NEGATIVE NUMBER

APES Question: Metric System 2014 Exam The shopping center’s parking lot is 200 meters long and 100 meters wide. Calculate the volume of water (in m 3 ) that runs off the parking lot after a 5 cm rainfall.

APES Question: Metric System 2014 Exam The shopping center’s parking lot is 200 meters long and 100 meters wide. Fremont has an area of 10 km 2 Impervious surfaces cover 20 percent of Fremont’s area. Calculate the volume of storm-water runoff (in m 3 ) generated in all of Fremont by the 5 cm rainfall event. Assume that only the impervious surfaces generate runoff.

Warm Up #4 This question compares standard internal combustion engine (ICE) cars to new electric vehicles (BEV). The charger supplies energy to the BEV battery at an average rate of 4.0 kilowatts (kW) and fully charges the BEV battery in 7.0 hours. The car will run for 100 miles on a full charge. The cost of electricity is $0.11 per kilowatt-hour (kWh). Assume that the fuel efficiency of the ICE vehicle is 25 miles per gallon (mpg) and that gasoline costs $3.75 per gallon (gal). Calculate the cost of gasoline per mile for an ICE car. Calculate the cost of the electricity to fully charge the BEV battery. Assume that the battery is not charged to begin with. Calculate the cost of electricity per mile to drive the BEV.

Warm Up #5 Estimate the potential reduction in petroleum consumption (in gallons of gasoline per year) that could be achieved in the US by introducing electric vehicles under the following assumptions: The mileage rate for the average car is 25 mpg The average car is driven 10,000 miles per year The US has 150 million cars 10% of US cars are now replaced with electric vehicles. If each gallon of gas costs $4, estimate the savings that you could achieve annually for those 10% of vehicles switching to electric.