Physics, 16.12.2020 16:40 irishdreamer0689
man with a mass of 70 kg balances on one foot while standing on a curb. The only significant forces on the foot (taken as a whole structure) are the ground pushing up at a point 15.0 cm in front of the ankle joint, the calf muscle pulling upward at the heel6.0 cm behind the ankle joint, and the tibia (shin bone) exerting a force at the ankle joint. Find the magnitudesof the forces exerted on the foot by the muscle and the tibia.
Answers: 2
Physics, 22.06.2019 04:40
How is the gravitational force related to the distance between two objects?
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Physics, 22.06.2019 18:50
An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?
Answers: 2
Physics, 22.06.2019 19:40
Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.
Answers: 2
man with a mass of 70 kg balances on one foot while standing on a curb. The only significant forces...
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