If an astronaut had a mass 30 kg on the moon what would his mass be on earth?

30kg

Explanation:  It will still be 30 kilograms. A kilogram is a measure of mass, which is a measure of the quantity of matter in the object, not weight, which is how strongly gravity is acting on that object, so 30 kilograms is 30 kilograms regardless of the gravitational strength acting on it. You will weigh less on the Moon due to its lower gravity, but your mass is completely unaffected.

the patriots are

this is the answer , p = 1 + (1/10)x

step-by-step explanation:

we have,

at sea level pressure is 1 atmosphere (i.e at x =0, p0=1 atmosphere)

at depth 23 meters , pressure = 3.3 atmosphere

since the pressure increases at constant rate as the depth increases, so we can write a relation as:

p =p0 +   kx   , where p is the pressure  , p0 is the initial pressure, x is the depth and k is constant rate of increasing.

to find constant rate k, plug p = 3.3 , p0 = 1 and x= 23 meters

we get,

  3.3 = 1 + k * 23

k = 2.3 / 23   = 1/10

so we can write the function formula as:   p = 1 + (1/10)x