4. A lion starts at rest 26 m away from a clueless Jordan and charges towards him at a constant velocity of +50km/h. It takes Jordan 1 s to react to the lion, turn around and begin
running at a velocity of +5 m/s towards his vehicle. Jordan's Land Rover is parked 6 m away
from him and on the same axis as the lion's charge.

a. If Jordan escapes, how far behind him is the lion?
b. If Jordan is caught, how far is he from the Land Rover?

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). what’s the chemical formula of this substance?

How does the motion of an airplane compare to the motion of a rocket ?