Answer:
10.1 m /s²
Explanation:
Let m₁ be the mass of the helium gas inside balloon. Mass of air displaced is m₂
m₁ = volume x density
= 4/3 x 3.14 x 5³ x .179
= 93.67 kg
mass of displaced air
= 4/3 x 3.14 x 5³ x 1.16
= 607.06 kg
Net buoyant force in upward direction
(607.06 - 93.67 ) x g
= 5031.22 N
weight of people and gondola
= (2 x 70 + 64 ) x 9.8
= 1999.2 N
Net force in upward direction
= 5031.22 - 1999.2
= 3032.02 N
Acceleration produced
= 3032.02 / total mass
= 3032.02 / ( 93.67 +204 )
= 3032.02 / 297.67
= 10.1 m /s²
I would go with D but i dont know if it right
Answer:
Gamma radiation or Cathode rays
Explanation:
by striking incident gamma or cathode rays onto the solid when placed on a photographic plate
Weight = mg Mass, m = 8kg, g ≈ 9.8 m/s² on Earth
W = 8*9.8
W ≈ 78.4 N
<span>Occulation occurs when an object in outer space reaches the solar system and passes between earth and a far distant star, temporarily blocking light from the star. Occulation is an astronomy term referring to when an object in the foreground blocks the view of an object in the background.</span>