Physics, 19.11.2019 01:31, reggiegilbert1995
For saving energy, bicycling and walking are far more efficient means of transportation than is travel by automobile. for example, when riding at 10.0 mi/h, a cyclist uses food energy at a rate of about 400 kcal/h above what he would use if merely sitting still. (in exercise physiology, power is often measured in kcal/h rather than in watts. here 1 kcal 5 1 nutritionistās calorie 5 4 186 j.) walking at 3.00 mi/h requires about 220 kcal/h. it is interesting to compare these values with the energy consumption required for travel by car. gasoline yields about 1.30 3 108 j/gal. find the fuel economy in equivalent miles per gallon for a person (a) walking and (b) bicycling.
Answers: 3
Physics, 21.06.2019 22:30, dawood7068
Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane
Answers: 1
Physics, 22.06.2019 13:00, help1572
Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?
Answers: 1
For saving energy, bicycling and walking are far more efficient means of transportation than is trav...
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