NASA uses a plane often called the "vomit comet" to simulate the weightlessness of space in astronaut training. The plane travels in circular arcs at a speed of v = 248 m/s. What is the radius the pilot must fly to create weightlessness as they go around the top of the circular arc?

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?