Consider three vectors a⃗ ,b⃗ and c⃗ all lying in the xy plane. vector a⃗ has length 6.2 and makes an angle of 131 degrees with the x-axis. vector b⃗ has length 7.3 and makes an angle of 32 degrees with the x-axis. the vector d⃗ =a⃗ +b⃗ +c⃗ has x-component dx = 3.1 and y-component dy = 6.7 .a) find the magnitude of the vector c⃗ .b) find the angle in degrees that vector c⃗ makes measured counterclockwise from the x-axis.

How much heat is required to convert 0.3 kg of ice at 0°c to water at the same temperature

Which factor listed below most likely results in the loss of genetic variation from small populations? question 2 options: mutation migration genetic recombination genetic drift

I) a gas contained within a piston-cylinder assembly undergoes two processes, a and b, between the same end states, 1 and 2, where p1 = 10 bar, v1 = 0.1 m3 , u1 = 400 kj and p2 = 1 bar, v2 = 1.0 m3 , u2 = 200 kj: ' process a: process from 1 to 2 during which the pressure-volume relation is pv = constant. ' process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to state 2. kinetic and potential energy effects can be ignored. for each of the processes a and b, a) sketch the process on a p-v diagram. b) evaluate the work, in kj. c) evaluate the heat transfer, in kj.(ans : qb,12 = -65.0 kj)