A sphere has radius 50mm and mass 1kg falling vertically through air of density 1.2kg/my attains a steady velocity of 11m/so. if the above equation is applied to it's fall what is the value of k?

You can decrease the resistance of a length of wire by

Which are true about beta reactions? there will be more than one answer. a. it has no change b. it doesn't change the mass of the number c. it has a mass of 0.0005 atoms d. it causes transmutation.

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.