Physics, 19.01.2021 19:40 angoliabirtio
A 68 kg hiker walks at 5.0 km/h up a 4% slope. The indicated incline is the ratio of the vertical distance and the horizontal distance expressed as percentage. What is the necessary metabolic power? Hint: You can model her power needs as the sum of the 380 W power to walk on level ground plus the power needed to raise her body by the appropriate amount. Assume that the efficiency of the body in using energy is 25%.
Answers: 1
Physics, 21.06.2019 22:40
The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively
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What are similarities and differences of reflection, refraction, diffraction and absorption?
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Physics, 22.06.2019 06:30
Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.
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A 68 kg hiker walks at 5.0 km/h up a 4% slope. The indicated incline is the ratio of the vertical di...
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