Aperson lifts a 4.7 kg cement block a vertical distance of 1.1 m and then carries the block horizontally a distance of 5.7 m. the acceleration of gravity is 9.81 m/s 2 . a) determine the work done by the person in the process. answer in units of j

The work done by the person in the process = 313.53 J

Explanation:

Work: This is defined as the product of force and distance. The unit of work is Joules (J). Because energy and work have the same unit, they can be used interchangeably during calculations in science.

Work done in the process = Work done i lifting the cement through the vertical distance + work done in carrying the cement along the horizontal distance.

Therefore, Wp = Wv + Wh equation 1

Where Wp = work dine in the process, Wv = vertical work done. Wh = horizontal work done.

Wv = mgHv Equation 2

Wh = mgHh Equation 3

Where m = mass of the cement, g = acceleration due to gravity, Hv = vertical distance, Hh = horizontal distance.

Substituting Equation 2 and 3 into Equation 1

Wp = mgHv + mgHh Equation 4

Given: m = 4.7 kg, Hv = 1.1 m, Hh = 5.7 m  g = 9.8 1m/s²

Substituting these values into equation 4

Wp = (4.7×9.81×1.1) + (4.7×9.81×5.7)

Wp = 50.7177 + 262.8099

Wp = 313.53 J.

Therefore, The work done by the person in the process = 313.53 J

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

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.