Europa, a satellite of jupiter, is believed to have a liquid ocean of water (with a possibility of life) beneath its icy surface. in planning a future mission to europa, what is the fastest that an astronaut with legs of length 0.67 m could walk on the surface of europa? europa is 3100 km in diameter and has a mass of 4.8×1022kg.

maximum speed  = 0.94490 Nm/kg

Explanation:

Given data

length = 0.67 m

diameter = 3100 km 3100000 m

mass = 4.8×10^22 kg

to find  out

maximum speed

solution

we will use here gravitational constant equation for find acceleration due to gravity at europa i.e

g = GM/r²

g = 6.67 × 10^(-11) ×  4.8×10^22 / (3100000/2)²

g = 1.332611862 Nm²/kg-m

so maximum speed will be √(gr)

maximum speed  = √( 1.332611862 × 0.67 )

maximum speed  = 0.94490 Nm/kg

if the forces acting on an object are unbalanced, the object will accelerate in the direction of the net force on the object.

explanation:

this is best explained by having an understanding of newton's second law, which states that f=ma. you see, when the forces are unbalanced, net force (sum of all forces) is not zero. therefore making it necessary for the object to have an acceleration in the direction of the net force.

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000