3 years ago

How can we use the balloon experiment to prove that air has weight (even though we cannot see air)?

2 answers:

7 0

Answer:

The end of the meter stick with the deflated balloon should have risen into the air. ... The only way the balloon could have lost mass is if the air that was inside it has mass. With this experiment you have shown that air takes up space and has mass, so you have proven that air is matter.

Explanation:

docker41 [41]3 years ago

3 0

Place an empty balloon on weighing machine, then fill it with air and place on weighing machine.

You will observe that air filled balloon has more weight than the empty balloon.

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what is the the wavelength if a wave cycles up and down three times per second and the distance between each wave is 1.7m?

DENIUS [597]

Answer:5.1 meters

Explanation:

wavelength=3 x1.7

Wavelength=5.1 meters

8 0

3 years ago

How does the momentum of a fast object compare to that of a slow object if they both have the same mass?

Varvara68 [4.7K]

The momentum of a fast object compared to that of a slow object even if they both have the same mass, is their velocities.

Having same mass but different velocities results in different momentum.

Example: mass = 10kg
Velocity 1 = 50 Velocity 2 = 100
Momentum 1 = 10×50 = 500 Ns
Momentum 2 = 10×100 = 1000 Ns

Hope it helped!

3 0

2 years ago

21. A person standing 49.5m from the foot of a cliff claps his hands and hears an echo 0.3

777dan777 [17]

Answer:

330 m/s

Explanation:

The sound wave has to travel TO the cliff AND back = 2 * 49.5 = 99 m

magnitude of velocity = distance / time = 99m / .3 s = 330 m/s

5 0

1 year ago

Why can videos be streamed from one computer to another with excellent quality?