I go with D .
Explanation:
I go with D because neither if the ballons have the same thermal energy.
Answer:
a. petrification
Explanation:
tar seeps = natural trade that, because of its close proximity to the ground surface, seeps from the cracks in the Earth or between rocks forming pits or pools (tar pits)
amber = fossilized resin produced by extinct coniferous trees, typically yellow in color
mummification = a process in which the skin and flesh of a corpse can be preserved by embalming and drying
Answer:
182 to 3 s.f
Explanation:
Workdone for an adiabatic process is given as
W = K(V₂¹⁻ʸ - V₁¹⁻ʸ)/(1 - γ)
where γ = ratio of specific heats. For carbon dioxide, γ = 1.28
For an adiabatic process
P₁V₁ʸ = P₂V₂ʸ = K
K = P₁V₁ʸ
We need to calculate the P₁ using ideal gas equation
P₁V₁ = mRT₁
P₁ = (mRT₁/V₁)
m = 2.80 g = 0.0028 kg
R = 188.92 J/kg.K
T₁ = 27°C = 300 K
V₁ = 500 cm³ = 0.0005 m³
P₁ = (0.0028)(188.92)(300)/0.0005
P₁ = 317385.6 Pa
K = P₁V₁¹•²⁸ = (317385.6)(0.0005¹•²⁸) = 18.89
W = K(V₂¹⁻ʸ - V₁¹⁻ʸ)/(1 - γ)
V₁ = 0.0005 m³
V₂ = 2.10 dm³ = 0.002 m³
1 - γ = 1 - 1.28 = - 0.28
W =
18.89 [(0.002)⁻⁰•²⁸ - (0.0005)⁻⁰•²⁸]/(-0.28)
W = -67.47 (5.698 - 8.4)
W = 182.3 = 182 to 3 s.f
Supermassive black holes astronomers believe to be driving activity in the centers of galaxies.
A galaxy is a device of stars, stellar remnants, interstellar gas, dust, and darkish count, sure together with the aid of gravity. The phrase is derived from the Greek galaxies, actually 'milky', a connection with the Milky manner galaxy that incorporates the solar system. Galaxies, averaging an envisioned a hundred million stars, range in length from dwarfs with much less than one hundred million stars, to the most important galaxies acknowledged – supergiants with one hundred trillion stars, each orbiting its galaxy's center of mass. most of the mass in a typical galaxy is within the form of a darkish count number, with just a few percentages of that mass seen within the form of stars and nebulae. Supermassive black holes are a commonplace feature in the centers of galaxies.
the gap among galaxies is filled with tenuous gasoline (the intergalactic medium) with an average density of much less than one atom consistent with a cubic meter. most galaxies are gravitationally prepared into businesses, clusters, and superclusters. The Milky way is part of the nearby organization, which dominates alongside the Andromeda Galaxy.
To learn more about galaxies visit here:
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