When venus is at closest approach to earth, it takes 270 seconds for radio waves to be transmitted to venus, bounce off of venus, and return to earth. given this, compute how many meters are in an au?

To solve the problem it is necessary to consider the kinematic equations of motion, distance and speed that would allow finding the solution to this problem.

By definition we know that speed is equivalent to the distance traveled in a certain period of time, that is

Where,

x= distance

t= time

The speed at which the transmission waves travel is equivalent to the speed of light so if a signal takes 270 seconds to go and return to Venus, the distance would be equivalent to

But this is the round trip distance, so the distance (d) would be half the way,

Therefore the distance between earth and Venus is

The Astronomical Units is defined as the distance from the sun to the earth, that is

Therefore the conversion to meters of the distance to Venus would be

Therefore the distance between earth and Venus in UA is 0.2707UA

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.