Physics, 06.12.2019 02:31, ayeheavymetal
Design of external rear-view mirrors on cars have been streamlined from flat, circular discs to a rounded hemisphere in order to reduce drag coefficient and improve fuel economy. calculate the annualized amount of fuel in liters and money in usd saved by the rounded design as compared to an older flat design. assume mileage of 24,000 km/yr, with mean speed of 95 km/hr, engine efficiency is 0.30, energy value of gasoline is 44,000 kj/kg, density of gasoline is 0.75 kg/l, density of air is 1.20 kg/m3 and cost of fuel is $0.90 /l
Answers: 2
Physics, 22.06.2019 07:30, luckylady
Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20
Answers: 1
Physics, 22.06.2019 13:00, Ryleetarver
Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg
Answers: 1
Physics, 22.06.2019 14:30, samone26
Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates
Answers: 3
Design of external rear-view mirrors on cars have been streamlined from flat, circular discs to a ro...
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