Well , i think helium gas is present in the Earth Crust because metals found in the crust have nuclei that decay into another elements
One of this element that formed is Helium
hope this helps
The answer is D. mass ...
Answer:
<h2>2 m/s²</h2>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula

f is the force
m is the mass
From the question we have

We have the final answer as
<h3>2 m/s²</h3>
Hope this helps you
Formula: Ca=Vt^2/r
centripetal acceleration(Ca)= ?
tangential speed(Vt)= 2.8m/s
Radius(r)=2m
Substitute: Ca=2.8^2/2
Ca=3.92m/s^2