4. if the force of friction on a sliding object is 25 n, what amount of force is needed to maintain a constant .if it is has constant velocity then the object is

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?