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Nataly [62]
2 years ago
7

The earth’s gravity pulls with a force of 10N on each kilogram of an object mass calculate the weight of a 15kg sack of potatoes

Physics
1 answer:
maw [93]2 years ago
4 0

Answer:

150 N

Explanation:

10*15 = 150 N

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A 20 liter cylinder of helium at a pressure of 150 atm and a temperature of 27ÁC is used to fill a balloon at 1.00 atm and 37ÁC.
djyliett [7]

<u>Answer</u>

D) 3100 Liters


<u>Explanation</u>

To get the volume if the balloon you need to use the combined equation of the low of gases.

P₁V₁/T₁ = P₂V₂/T₂

(20×150)/(27+273) = (1×V₂)/(37+273)

3000/300 = V₂/310

10 = V₂/310

V₂ = 10 × 310

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3 years ago
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What is the minimal mass of helium (density 0.18 kg/m3) needed to lift a balloon carrying two people in a basket, if the total m
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Answer:   
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 Î”R is the difference in density between the gas inside and surrounding the balloon. 
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 ==================================== 
 Let V be the volume of helium required. 
 Upthrust on helium = Weight of the volume of air displaced = Density of air * g * Volume of helium = 1.225 * g * V   
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 Weight of 260kg = 2549.7 N 
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 M[min] = Weight of basket * (difference in density between balloon's gas and surroundings / density of gas in balloon)   
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3 0
3 years ago
A piece of metal has attained a velocity of 107.8 m/sec after fallinf for 10 seconds what is its initial velocity
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Answer:

7.8 m/s

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V = U + at

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U - Initial velocity

a - acceleration

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Answer:

1. Attract

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3. Attract

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