Answer:
a) iv. Displacement per unit time
b) ii. m/s2
c) this question is wrong
d) iv. m
The outer radius of the ball = 6.70cm.
<h3>What is Buoyant Force?</h3>
The upward force applied to an object that is fully or partially submerged in a fluid is known as the buoyant force.
Given: Mass of aluminum ball = 
To find: The outer radius of the ball.
Finding:
As Buoyant Force = 
,
The weight of the ball should be equal to the buoyant force since it floats on the water.
That is,
=> 
=> 
Upon substitution of values of 
and g, we get: 
Hence, the outer radius of the ball = 6.70cm
To learn more about Buoyant Force, refer to the link: brainly.com/question/17009786
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Answer:
<em>If you’ve ever received a high energy bill, it might be time to learn how to read your meter, so that you can begin saving.
</em>
Explanation:
<em>Every appliance and electronic device in your home adds to your bill. By calculating your own tab, you can find out which appliances are costing you much more than they should. This awareness can both lower your bill and reduce your carbon footprint at the same time.
</em>
I can't see either of them, so I must assume that they're both
far away from me, at different places in the solar system.
So I can say with some assurance that whichever ball is on the
more massive planet will have greater acceleration when it's dropped.
Its acceleration will be constant, from the instant of release until the
instant it hits the "ground" or whatever they call it on that planet.
