A block of mass 0.5kg on a horizontal surface is attached to a horizontal spring of negligible mass and spring constant 50N/m. The other end of the spring is attached to a wall, and there is negligible friction between the block and the horizontal surface. When the spring is unstretched, the block is located at x = 0m. The block is then pulled to x = 0.5m and released from rest so that the block-spring system oscillates between x = -0.5m and x = 0.5m, as shown in the figure. Which of the following claims is correct about the block’s period of oscillation? 1- The period would increase if the block were released from rest at x=0.8m.
2- The period would increase if the block had a mass of 1.2kg
3- The period would increase if the spring had a spring constant of 75 N/m
4- The period would increase if the block-spring system was oriented vertically so that the block-spring system oscillates between y = -0.5m and y = 0.5m , the mass of the block is 0.5kg, and the spring constant is 50 N/m.

because growing process had stoped after 4-5 year

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.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

in order to follow the instructions and complete the statements, i need to use data from table c of your student guide. can you think of a way to let me see your student guide for a while ? i can't answer the question without the data in table c.