Osmium (os) is the densest element known (density = 22.57 g/cm3). calculate the mass in pounds and in kilograms of an os sphere 15 cm in diameter, about the size of a grapefruit. enter your answers in scientific notation.

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Suppose an objects initial velocity is 10m/s and it’s final velocity is 4 m/s. mass is constant. what can best be concluded about the object based in the work-energy theorem

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational