List the colors of visible light in order of decreasing frequency physics

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above

Which type of energy is transferred by convection currents?