21.As a future healthcare professional, how could you use operant conditioning to minimize a patients’ fears or anxieties? (Remember: Operant conditioning relates to voluntary behaviors that are driven by reinforcers or punishments.)

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Positrons are spontaneously emitted from the nuclei of