Part A: A sample of gold has a mass of 38.6 grams and a volume of 2 cm3. What is the density of gold? Part B: A sample of iron has a mass of 46.8 grams and a volume of 6 cm3. What is the density of iron?
Part C: Of the two samples described in parts A and B, the sample of iron has more mass and feels heavier than the sample of gold. Does this mean that the density of iron is greater? Explain.
Part D: Water has a density of 1.0 g/cm3. What is the mass of 10.0 cm3 of water?
Part E: Some substances have the same chemical composition, but their atoms are arranged differently. A classic example is carbon. A pencil lead is made of graphite, which contains only carbon atoms. A diamond also contains only carbon atoms. However, the carbon atoms in a diamond are packed more closely together. Would you expect the density of graphite and a diamond to be the same? Explain your answer.

c. rb

explanation:

the atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons.

e/c, where e is its total energy

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.