A child, who has a mass of 57 kg, tries to swing from a 11.0 m long rope. Its speed at the bottom of the swing is 5.0 m/s. The child should pay attention to important safety concerns. However, the child neglects to get information on the rope and the child doesn't know the rope is only rated to handle 2000 N of tensile force. The maximum amount of force will be put on the rope at the bottom of the swing. What is the amount of force the child exerts on the rope at the bottom of the swing? N

it will be pushed away from the source of the electric field. a negative charge in a cloud induces a positive charge in the ground below the cloud.

explanation:

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

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.