The bar chart shows the percentage of adults in the i. s. living with certain heart disease risk factors which conclusion can be drawn from the chart

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost