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tiny-mole [99]
3 years ago
12

A hot air balloon has a volume of 65,00 cubic feet of hot air. The balloon is at sea level on a standard day. If the temperature

of the hot air in the balloon is 1100F, determine the lifting force of the balloon.
Physics
1 answer:
seraphim [82]3 years ago
6 0
If you heat that air by 100 degrees F, it weighs about 7 grams less. Therefore, each cubic foot of air contained in a hot air balloon can lift about 7 grams. That's not much, and this is why hot air balloons are so huge -- to lift 1,000 pounds, you need about 65,000 cubic feet of hot air.
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Helga [31]

Answer:

1. What is not considered a cardiovascular workout?

A. Jogging

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Explanation:

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2 years ago
During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 6.22 s, how high does it rise? The accel
BigorU [14]

Answer:

47.4 m

Explanation:

When an object is thrown upward, it rises up, it reaches its maximum height, and then it goes down. The time at which it reaches its maximum height is half the total time of flight.

In this case, the time of flight is 6.22 s, so the time the ball takes to reach the maximum height is

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s=ut+\frac{1}{2}gt^2

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Solving the  formula, we find

s=\frac{1}{2}(9.8)(3.11)^2=47.4 m

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3 years ago
Which part of the water cycle would follow step D in the diagram shown?
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3 In a television tube, an electron starting from rest experiences a force of 4.0 × 10−15 N over a distance of 50 cm. The final
MAXImum [283]

Answer:

The final speed of the electron = 2.095×10⁸ m/s

Explanation:

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making a the subject of the equation,

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Given: F = 4.0×10⁻¹⁵ N,

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Substituting into equation 2

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a = 4.39×10¹⁶ m/s².

Using newton's equation of motion,

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Given: u = 0 m/s(at rest), s = 50 cm = 0.5 m, a = 4.39×10¹⁶ m/s²

Substituting into equation 3

v² = 0² + 2(0.5)(4.39×10¹⁶)

v = √(4.39×10¹⁶)

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7 0
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