(a).      A solid ball has a weight of 3.5N. When it is sub…

 (a).      A solid ball has a weight of 3.5N. When it is submerged in water (density of water is 1,000 kg/m3), it has an apparent weight is 2.7 N. What is the density of the             ball?                                                                                                                                             (2.5 points)                                                                                                                   (b).       If 1.40 x10 6 J of heat is required to raise the temperature of a material from 22°C to 310°C, what is the mass of the material if the specific heat of the material is            130 J/kgoC?                                                    (1.5 points)   

a. In a survey, participants were asked to rate their satisf…

a. In a survey, participants were asked to rate their satisfaction level with a product on a scale of 1 to 5. This variable is .   b. A researcher recorded the models of cars passing by a busy intersection. This variable is .   c. A study collected data on the number of pets each student in a class has. This variable is .