Which of the following best illustrates a "double blind” study? A study in which neither the participants nor the researchers are familiar with the hypothesis.
A study in which neither the participants nor the researchers know which participants are in which group.
O A study in which both control and the experimental group participants are unsure which group they are in.
A study in which participants are not tracked and researchers determine who was in which group based on results.

Aa a of 22 m/s at an of 36.9 .be . a. b. c. (3)x y of? (3)go? (4) () it to to ?

An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class