Use the drop-down menu to select the education or qualification best demonstrated in each example. Maritza is friendly and polite to people who enter the store where she works.
✔ customer-service skills

Darren stays calm and does not get frustrated when dealing with an angry customer.
✔ patience

Yelena is able to lift heavy items on high shelves.
✔ physical strength

Which subatomic particle has a negative charge

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.