How much work is done by a babysitter who uses 4500 w of power to lift a baby in 4s

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

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.