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Igoryamba
2 years ago
13

what did taking measurements reveal about the velocity of the fireball? Was the fireball’s velocity constant or changing?

Physics
1 answer:
Salsk061 [2.6K]2 years ago
7 0

Answer:

The fireball slows down when moving upward. It speeds up when moving downward. So, its velocity is always changing.

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what gas is most abundant greenhouse gas ? a) ozone b) chlorofluorocarbon c) carbon dioxide d) methane e) water vapor
jek_recluse [69]

i believe the answer is water vapor

hope this helps


5 0
3 years ago
Read 2 more answers
The core of a 400 Hz aircraft transformer has a net cross-sectional area of 13 cm2. The maximum flux density is 0.9 T, and there
jenyasd209 [6]

Answer:

32.76 Volt

Explanation:

frequency, f = 400 Hz

Area of crossection, A = 13 cm²

Maximum flux density, B = 0.9 tesla

Number of turns in secondary coil, N = 70

Let the maximum induced voltage is e.

According to the Faraday's law of electromagnetic induction, the induced emf is equal to the rate of change of magnetic flux.

e = dФ/dt

e=\frac{NBA}{t}

Time is defined as the reciprocal of frequency.

So, e = N B A f

e = 70 x 0.9 x 13 x 10^-4 x 400

e = 32.76 volt

4 0
3 years ago
describe the following wave characteristics associated with Transverse and longitudinal waves-amplitude, wavelength, and frequen
sasho [114]

frequency is how many times a sec the thing vibrates

amp is the size of the vibration

wavelength is distance peak to peak for example

8 0
3 years ago
what is the valure of work done on an objectwhen a 50newton force moves it 15 metrs in thesame dirction as the force
Snowcat [4.5K]
50 *15=750
work is force time distance times angle between both vectors 
here the angle is 0.
5 0
3 years ago
You throw a rock upward. The rock is moving upward, but it is slowing down. If we define the ground as the origin, the position
Alecsey [184]

Answer:

positive, positive

You throw a rock upward. The rock is moving upward, but it is slowing down. If we define the ground as the origin, the position of the rock is positive and the velocity of the rock is positive

Explanation:

Given that the ground is defined as the origin.

The position of the rock is positive since the rock is thrown upward, the position also increases with time until it reaches the maximum height. Also, since the rock is thrown upward with the ground as the origin, the velocity of the rock is positive but the velocity reduces with time (change in height per unit time as the rock moves up is positive)

3 0
3 years ago
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