What type of front occurs when cold air and warm air are next to each other but are at a standstill

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius