Et
Velocity (meters/second)
5
X
3 4
Time (seconds)
In the graph which two regions show the particle undergoing zero acceleration and negative acceleration respectively?
A
B.
BC shows zero acceleration, and AB shows negative acceleration
AB shows zero acceleration and CD shows negative acceleration
C
BC shows zero acceleration, and CD shows negative acceleration
AB shows zero acceleration, and BC shows negative acceleration
D.

answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.

Amethod of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.