![subject](/tpl/images/cats/fizika.png)
The food calorie, equal to 4186 j, is a measure of how much energy is released when the body metabolizes food. a certain fruitandcereal bar contains 140 food calories. (a) if a 65kg hiker eats one bar, how high a mountain must he climb to "work off" the calories, assuming that all the food energy goes into increasing gravitational potential energy? (b) if, as is typical, only 20% of the food calories go into mechani- cal energy, what would be the answer to part (a)? (note: in this and all other problems, we are assuming that 100% of the food calories that are eaten are absorbed and used by the body. this is actually not true. aperson's "metabolic efficiency" is the percentage of calories eatenthat are actually used; the rest are eliminated by the body. metabolic efficiency varies considerably from person toperson.)
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 15:50
Ahollow metal sphere has 6 cm and 11 cm inner and outer radii, respectively. the surface charge density on the inside surface is −100nc/m2. the surface charge density on the exterior surface is:
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 07:00
The table below shows the acceleration of gravity on different bodies in the solar system. on which body would a 10 kg lamp has the most gravitational potential energy when lifted to a height of 2 m? a. earth b. mars c. neptune d. uranus
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:30
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
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:20
Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?
Answers: 1
You know the right answer?
The food calorie, equal to 4186 j, is a measure of how much energy is released when the body metabol...
Questions
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 19.07.2019 04:50
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2019 04:50
![question](/tpl/images/cats/fizika.png)
Physics, 19.07.2019 04:50
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2019 04:50
![question](/tpl/images/cats/es.png)
Spanish, 19.07.2019 04:50
![question](/tpl/images/cats/istoriya.png)
History, 19.07.2019 04:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 19.07.2019 04:50
![question](/tpl/images/cats/geografiya.png)
Geography, 19.07.2019 04:50
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2019 04:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2019 04:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2019 04:50