Answer:
Density = 388.57 kg/m³
Explanation:
Given the following data;
Mass = 52457 grams to kilograms = 52457/1000 = 52.457 kilograms
Volume = 13.5 cm to meters = 13.5/100 = 0.135 m
To find the density;
Density can be defined as mass all over the volume of an object.
Simply stated, density is mass per unit volume of an object.
Mathematically, density is given by the formula;

Substituting into the formula, we have;

Density = 388.57 kg/m³
Answer: NON-EQUIVALENT GROUP DESIGN.
Explanation: A nonequivalent group design is a quasi‐experiment used to assess the relative effects of treatments that have been assigned to groups of participants non-randomly (adults whose name appeared in the local police report as child abuse victims, and those have never been victims). Because the participants have been assigned to treatments non-randomly by Dr. Rose, differences in the composition of the treatment groups can bias the estimates of the treatment effects. A variety of statistical methods are available for taking account of this selection bias. Each method imposes different assumptions about the nature of the selection effects, but it can be difficult to determine which set of assumptions is most appropriate in a given research setting.
D. Arapahoe Community College
Answer:
Physical activity is movement that is carried out by the skeletal muscles that requires energy. Exercise, however, is planned, structured, repetitive and intentional movement intended to improve or maintain physical fitness.