Tại hai điểm C và D cách nhau 5 cm trong không khí đặt hai điện tích q1=-4x10^-8 và q2 = 3x10^-8 xác định lực điện trường do 2 điện tích này td lên điện tích q3=2.10^-8 đặt tại c A/ C cách A 3cm , cách B 8cm
B/ C cách A 3 cm cách B 4cm

She sold 135 peaches, because if you multiply 2.50 eith 135, you'd get 337.5, the 0 can be added or not.

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero. 

Ibelieve the answer is d. densityhope my answer has you : )