A.) how much heat transfer (in kj) is necessary to raise the temperature of a 0.250 kg piece of ice from −16.0°c to 132°c, including the energy needed for phase changes? (assume the substance remains at a constant volume throughout each stage of the heating process.) b.) how much time (in s) is required for each stage, assuming a constant 19.5 kj/s rate of heat transfer? (enter your answers as a comma-separated list. enter your times in order from the earliest stage to the final stage of the heating process.)

it may be wrong but i think its a

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

i'm on my way to history not a mistory.

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.