Physics, 12.08.2020 05:01 rebeccamckellpidge
You see a penny lying on the ground. A penny won't buy much these days, so you think: "If I bend down to pick it up I will do work. To do that work I will have to burn some energy. It probably costs me more to buy the fuel (food) to provide that energy than I would gain by picking up the penny. It's not cost effective." You pass it by.
Required:
a. Is the argument correct?
b. Estimate the energy cost for picking up a penny.
Answers: 3
Physics, 22.06.2019 02:10
How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by
Answers: 2
Physics, 22.06.2019 18:30
Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size
Answers: 3
Physics, 22.06.2019 19:20
Which best describes the difference between internal and thermal energy?
Answers: 1
You see a penny lying on the ground. A penny won't buy much these days, so you think: "If I bend dow...
Arts, 13.01.2021 19:30
Physics, 13.01.2021 19:30
Mathematics, 13.01.2021 19:40
Mathematics, 13.01.2021 19:40
Mathematics, 13.01.2021 19:40
Mathematics, 13.01.2021 19:40
Mathematics, 13.01.2021 19:40
Biology, 13.01.2021 19:40
English, 13.01.2021 19:40
Chemistry, 13.01.2021 19:40