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Bas_tet [7]
3 years ago
11

Hot air is less dense than cool air, so hot air will rise above cool air. Increasing the air temperature inside a hot air balloo

n makes it lighter than the surrounding air, so the balloon can lift up. The density of hot air is about 0.25kg/m^3 less than that of cool air, which means a cubic meter of hot air can lift about 0.25kg.
What is the minimum volume of hot air needed to lift a hot air balloon carrying
Mathematics
1 answer:
madam [21]3 years ago
6 0

Answer:

It’s c

Step-by-step explanation:

I just did it

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A small publishing company is planning to publish a new book. The production costs will include one-time fixed costs (such as ed
Natasha2012 [34]

Answer:

oppppppss

Step-by-step explanation:

5 0
3 years ago
What is the volume of a rectangular prism with the base area of 15m2 and height of 5cm?
koban [17]

Answer:

The correct answer is option C. 75 m³

Step-by-step explanation:

<u>Points to remember</u>

Volume of rectangular prism = Base area * Height

<u>To find the volume of given prism</u>

Here Base area = 15 m² and

Height = 5 m

Volume = base area * height

 = 15 * 5

 = 75 m³

Volume of prism = 75 m³

Therefore the correct answer is option C. 75 m³

3 0
3 years ago
Read 2 more answers
Find the area of the shaded polygon:<br><br> PLS JUST ANSWER
timofeeve [1]

Answer:

9 square units

Step-by-step explanation:

1/2(3)=1.5

1/2(6)=3

2

1/2(3)=1.5

1/2(2)=1

1.5+1.5+3+2+1=9

7 0
3 years ago
Marine biked 3/4 of a mile on Monday. On Tuesday he biked 5 times this distance. The number of miles marine bikes on Tuesday is
PolarNik [594]

It's simple.  First, multiply 3/4 by 5.  As a decimal, this equals 3.75.  Therefore, the number of miles marine bikes on Tuesday is between 3 and 4.

Hope I helped! :)

4 0
3 years ago
At the same time a 50 ft cell phone tower casts a 32 ft shadow, a near by light pole casts a 20 ft shadow. How tall is the light
White raven [17]

Answer: 31.25 ft

Step-by-step explanation:

50 / 32 = x / 20

32x = 50(20)

x = 31.25 ft

7 0
3 years ago
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