Convection currents generated within the asthenosphere push magma upward through volcanic vents and spreading centres to create new crust. Convection currents also stress the lithosphere above, and the cracking that often results manifests as earthquakes.
Answer:
metals,nonmetals, and inert gases
Explanation:
Answer:
44.7 N
Explanation:
The gravitational force between the objects is given by:
where
G is the gravitational constant
m and M are the masses of the two objects
r is the distance between the centres of the two objects
In this problem, we have:
is the mass of the sphere
is the Earth's mass
is the Earth's radius, while h=310 km is the altitude of the sphere, so the distance of the sphere from Earth's centre is
Substituting into the equation, we find
The missing value is the 'k' that should appear between '28' and 'g' .
Nobody has a mass of 28g.
My new grandson, who was born yesterday (January 29, 2019), had a mass of 4,039g at birth.
Mother and son are happy and resting comfortably today, in Kfar Tapuach, Samaria, Israel.