An object with total mass mtotal = 15.8 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.5 kg moves up and to the left at an angle of θ1 = 18° above the –x axis with a speed of v1 = 27.5 m/s. A second piece with mass m2 = 5.4 kg moves down and to the right an angle of θ2 = 23° to the right of the -y axis at a speed of v2 = 21.4 m/s. 1)What is the magnitude of the final momentum of the system (all three pieces)?

Explanation:

total mass, M = 15.8 kg

initial velocity, u = 0 m/s

m1 = 4.5 kg

m2 = 5.4 kg

v1 = 27.5 m/s at an angle 18°

v2 = 21.4 m/s at an angle 23°

As there is no external force acts on the system, so the moemntum of the system is conserved.

Momentum before collision = momentum after collision

as the momentum before collision is zero, so the momentum after collision is also zero.

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: