A standing wave has the following wave-function: y(x. t) = 0.2 sin(310) cos(127). where x and y are in meters, and t is in seconds. If the length of the string is L=2
mand it is fixed at both ends, then the harmonic, n, in which the string is
vibrating is
OS
On
On
2
On4​

It should be d if not then c

B) raising the temperature and reducing the volume of the gas.|-/ 

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. 

Answer mechanical energy;