A satellite moves at a constant speed in a circular orbit about the center of the Earth at an altitude half the radius of the Earth above its surface. if 'g' is the
gravitational acceleration at the surface of the Earth and Rits radius, then what
will be the speed of the satellite?
O V25R
123R/3
133R/2
VOR

Explanation:

Using the gravitational force equation

D is the distance from the center of the earth

Now, we can equal this equation to the centripetal force.

V is the speed of the satellite

But if we evaluate the force at the surface of the earth we have:

Then we can use this expression into the equation of V

I hope it helps you!    

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.