8 photos: Actors who have played Batman. Christian Bale â After the disaster of Batman & Robin, the franchise was destined to remain a joke until director Christopher Nolan came along to reinvent the role and finally make the Dark Knight, well, dark. photos: Actors who have played Batman. Christian Bale â After the disaster of Batman & Robin, the franchise was destined to remain a joke until director Christopher Nolan came along to reinvent the role and finally make the Dark Knight, well, dark.
Full Answer. The instantaneous speed of an object should not be confused with the average speed. For example, a person who drives 60 miles in a single hour has an average speed of 60 miles per hour, but the instantaneous speed of the vehicle could vary greatly from one instant to another.
Examples of Frequency. Although the standard definition of frequency is based on events per second, other units of time may be used, such as minutes or hours. For example, a human heart may beat at a frequency of 68 beats per minute. A 78 record on a turntable turns at the rate of 78 revolutions per minute or 78 rpm.