Answer:
what's the question
Explanation:
I don't understand the question
Answer:
Being a noble gas, hrlium has a small molecular weight and it's chemical stability is high having the tendancy not to create chemical boudaries ( reactions)
Answer:
(a) Option B
The magnitude of the buoyancy force is equal to that of the ball's weight.
(b) Option B
The magnitude of the buoyancy force is larger than that of the ball's weight.
(c) Option B
They both have the same buoyancy force.
Explanation:
(a)
Ball 1
The sum of vertical forces is zero hence therefore
B-mg=0 where B is buoyancy force, m is mass of ball, g is acceleration due to gravity
B=mg
mg is weight of ball
Therefore, option B, The magnitude of the buoyancy force is equal to that of the ball's weight
(b)
Ball 2
The sum of vertical forces is zero hence therefore
B-T-mg=0 where B is buoyancy force, m is mass of ball, g is acceleration due to gravity and T is tension in the string
B=mg+T
Therefore, option B, The magnitude of the buoyancy force is larger than that of the ball's weight.
(c
)
Ball 2 and 3
They have similar buoyancy force since the weight displaced by the body equals the buoyancy force. In this case, the weight of the displaced fluid is proportional to the volume of the ball since the two balls have same volume. It therefore means that their buoyancy forces are also the same.
Answer: type of force is friction
Explanation:
The correct answer is A <span />