In which of the following situations does gravity supply a centripetal force? a. the space shuttle orbiting the earth b. a child on a merry-go-round c. a bike rounding a curve d. a book falling off a table

Adangerous they will drug created from marijuana or tobacco soaked in embalming fluid and or laced with pcp is known as hashish, wet stick, green joint, or black resin

Describe the purpose and function of recording the start and stop time for anesthesia services.

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine. what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.