Astronauts land on a newly discovered planet that has the same radius as the Earth but three times its mass. Use concepts from this unit to explain
how the planet's gravity will be different from the Earth's.

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

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.