Question

Need them all answered

d)2.1m/s e)0.021m/s 8. What class of errors is assumed to be the basis for statistical variations in measurements? a)Personal b) systemic c) random 9. A cylinder has a length of 3.23 cm, a diameter of 1.75cm, and a mass of 65.3 g. The density of the cylinder is a)7.765g / cm" b) 7.77 g / cm3 10. A net force of 3.50 N acts on a 1.75 k hat is the acceleration of the object? c) 2.00m a) 2m/s b) 2.00m/s2 d) 2.0mis 11. A metal cylinder has a diameter of 20cm and a length of 5.0cm. What is the volume using the formula V a) 15.7cm b)3.14x10×5cm' c)3.14x20 × 5 cm3 d)none of these 12. What is the mass of 10ml of milk if its density is 0.5g/ml using the formula D-m/V? a) 50g b)5g c)5.0g d)none of these

Answer 1

Random Variables are Assumed to be basis for statistical Variations in measurement. In case of Cylinder H = 3.23 cm Diameter = 1.75 cm implies radius = d/2 = .875 cm mass = 65.3 g So Density = M/V Now Volume of Cylinder = pier^2h = 3.14 times (.875 cm)^2 times 3.23 cm V = 7.76 cm^3 = 65.3 g 7.76 cm^3 D = 8.41 g/cm^3 Force = mass times acceleration Force = 3.50 N or 3.50 kgm/s^2 MASS = 1.75 KG So BY above formula arc = 3.50 kg m/s^2/1.75 kg = 2.00 ms^2 Hence acceleration = 2.00 m/s^2 In case of metal cylinder Diameter = 20 cm , r = 10 cm length = 5.0 cm Volume = pier^2h = 3.14 times (10cm)^2 times 5.0 cm V = 1570 cm^3 Hence None of these option is correct mass = ? volume = 10 ml Density = 0.5 g/ml \r\n