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nikitadnepr [17]
3 years ago
14

Identify the method of thermal energy transfer at work in hot air balloons. Explain how thermal energy is transferred in this sc

enario.
Physics
2 answers:
yan [13]3 years ago
8 0
Thermal energy in the form of fire is generated by the combustion of fuel. Due to the tendency of hot air to rise upward, the heat generated rises to fill the space of the balloon. One this space is full of trapped hot air, the heat's tendency to rise causes the hot air balloon to be lifted into the air. 
german3 years ago
3 0

Sample Response: Convection is the method of thermal energy that occurs in hot air balloons. Thermal energy is transferred when the air above the flame becomes warm and less dense, and rises. Cool, dense air sinks and takes the place of the warm air that rises. The cool air is warmed by the flame, becomes less dense, and rises. This cycle continuously warms up the air in the balloon.

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MissTica
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4 years ago
Light does not move infinitely fast but has a finite speed. We normally use ""c"" to indicate the speed of light in science. Wri
Ede4ka [16]

Answer:

6.71 × 10^8 mi/hr

Explanation:

Light is usually defined as an electromagnetic wave that is comprised of a definite wavelength. It is of both types, visible and invisible. The light emitted from a source usually travels at a speed of about 3 × 10^8 meter/sec. This speed of light is commonly represented by the letter 'C'.

To write it in the metric system, it has to be converted into miles/hour.

We know that,

1 minute = 60 seconds

60 minutes = 1 hour

1 kilometer = 1000 meter

1 miles = 1.6 kilometer

Now,

= \frac{3 \times\ 10^8 meter \times\ 60 sec \times\ 60 min}{1 sec \times\ 1 min \times\ 1 hr}

= 1.08 × 10^12 m/ hr (meter/hour)

= \frac{1.08 \times\ 10^{12} meter \times\ 1 km \times\ 1 miles}{1 hr \times\ 1000 meter \times\ 1.6 km}

= 6.71 × 10^8 mi/hr (miles/hour)

Thus, the value for speed of light (C) in metric unit is 6.71 × 10^8 mi/hr.

5 0
3 years ago
The average distance from Earth to the Moon is 384,000 km. How many days would it take, traveling at 800 km/h (the typical speed
Gala2k [10]

Answer:

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4 0
2 years ago
Sort the processes based on the type of energy transfer they involve.
alina1380 [7]
Types of energy transfer involve
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7 0
4 years ago
A little girl kicks a soccer ball. It goes 10 feet and comes back to her. How is this possible?
marta [7]
A classic puzzle...

She either kicked it at a wall <em>exactly</em><em /> 10 foot in front of her, where the ball rebounded off the wall.

Or, she kicked the ball straight up, vertically, at a <em>90 degree angle,</em> where due to the law of gravity, which states that anything that goes up must come down, when the soccer ball reaches exactly 10 feet, it falls back down.
(Note: This is nearly impossible to achieve -- exactly 10 feet.)

8 0
4 years ago
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