Jacqueline
New member
1) Bernard weighs a jar of pennies to find out how much they are worth. After subtracting the weight of the empty jar, he finds that the pennies have a total mass of 9.34 +/- 0.09 kg. Assuming that each penny weights 2.5 g, and taking into account the uncertainty of the measurement, what is the minimum value of the pennies (expressed in dollars)?
2) Calculate the mass of a star having a diameter of 8E5 km and an average density of 1.3 g/cm3.
2) Calculate the mass of a star having a diameter of 8E5 km and an average density of 1.3 g/cm3.