Larger animals use proportionately less energy than smaller animals; that is, it takes less energy per kg to power an elephant than to power a human. a 5000 kg african elephant requires about 70,000 cal for basic needs for one day.

a. if a 68 human required the same energy per kg of body mass as an elephant, how much energy would be required each day?
b. what resting power does this correspond to?
c. how much less is this than the resting power noted in the chapter?

Part a)

Part b)

Part c)

Explanation:

As we know that 5000 kg African elephant requires 70,000 Cal for basic needs per day

so we will have

so we have energy required per kg

Part a)

now we know that per kg the energy required will be same

so we have mass of the human is 68 kg

so energy required per day is given as

Part b)

Resting power is the rate of energy in Joule required per sec

so it is given as

Part c)

resting power given in the book is

so this is less than the power given

the rearrangement of particles in a physical change. hope this

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.