Solve the system of equations given in the previous hint, and find an expression for x1x1x_1 in terms of the following variables: x0Ax0Ax_0A, the initial position of puck A; x0Bx0Bx_0B, the initial position of puck B; v0Av0Av_0A, the initial speed of puck A; and v0Bv0Bv_0B, the initial speed of puck B. Note that since we are now using the initial speeds of the pucks, the two equations become:

6/12=1/2

step-by-step explanation:

k2s for potassium sulphide

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude , so she gains some gravitational potential energy.