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Dima020 [189]
3 years ago
9

What is gravity ?short ans​

Physics
1 answer:
Nezavi [6.7K]3 years ago
7 0

Answer:

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.

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A helium tank holds a volume of .02 m^3 at a pressure of 15.5*10^6 Pa and a temperature of 293 K. How many spherical balloons wi
lukranit [14]

Answer:

Explanation:

We shall find the volume of stored gas at atmospheric pressure .

P₁ V₁ = P₂ V₂

15.5 x 10⁶ x .02 = 10⁵ x V₂  ( atmospheric pressure is 10⁵ Pa )

V₂ = 3.1 m³

volume of one balloon = 4/3 x π r³ , r is radius of balloon

= 4/3  π x .11³

= .050658 m³

no of balloon = total volume to be filled / volume of one balloon

= 3.1 / .050658

= 61 .2

= 61

7 0
3 years ago
1. If a radioactive sample has a half-life one month, how much of the original sample will be left at the end of
evablogger [386]

Answer:

second month = 0.5² = 1/4 of original

third month = 0.5³ = 1/8 of original

Explanation:

4 0
3 years ago
Ngan has a weight of 314.5 N on Mars and a weight 833.0 N on Earth. What is Ngan's mass on Earth?
mr_godi [17]

Ngan's mass on earth is 85kg.

Ngan has a weight on Mars = 14.5 N

Ngan’s weight on Earth = 833.0 N

Ngan’s mass on Earth = ?

<span>Fg,earth = mg(earth)</span>

<span>M = Fg,earth </span><span>/ g(earth)</span>

<span>M = 833.0 N / 9.8 m/s2</span>

<span>M = 85 kg</span>

4 0
3 years ago
Read 2 more answers
Please help on this one?
vova2212 [387]

Answer: The system internal energy is 40 Joules.

Explanation: As suggested, the formula \Delta U = Q-W=(70-30)J = 40J should be used. 70 Joules worth of thermal energy are added, and the system does 30 Joules worth of work (energy expenditure).

7 0
3 years ago
Read 2 more answers
From earths atmosphere where can the carbon atom go next ?
sdas [7]
Well, since your mom is as fat as the earth, I’m guessing the carbon atom will go to your mom next

8 0
3 years ago
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