It would take roughly 3 seconds.
Given: Heat Qout means useful work = 2800 J
Heat Qin = 8900 J
Required; Efficiency = ?
Formula: Efficiency = Qout/Qin = x 100%
= 2800 J/8900 J = 0.3146 X 100 %
Efficiency = 31.46%
A force is a push or pull upon an object resulting from the object's interaction with another object.
Answer:
Angular diameter : degrees or radians
Explanation:
Angular diameter is an angular measurement of the objects. It is an angle subtended by the two points of an object from the observer's eye view. Its unit is measured in degrees or radians.
It is a geometrical technique used to measure the size of an object which is not directly measurable. For example, to measure the diameter of a planet.