Astrophysical theory suggests that a burned out star will collapse under its own gravity to form a blackhole when its mass is at least three solar masses. If it does, what is the radius of its event horizon? (solar mass=1.99×10^30kg)

Interactional synchrony is like an "emotional dance" between caregiver and child, wherein they send important signals and share emotions. what does this process form for the child? a. a physical foundation for trust b. a basis of the drive for independence c. positive experiences that stabilize brain connections d. a basis for attachment

According to icd-10 official guidelines for coding and reporting section i.c.13.d. osteoporosis is a systematic condition, meaning that all bones of the musculoskeletal system are affected. therefore, site is not a component of the codes and you should use codes under which category?

Wheeled coach ambulance uses an interactive computer program to develop and document its products. what is it called?