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Nat2105 [25]
3 years ago
7

What can you observe to know that when clear methane gas is burned it is a chemical change?

Physics
1 answer:
aalyn [17]3 years ago
6 0
<span>4) Formation of a gas

When methane burns, it produces the gases water vapor and carbon dioxide.
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35.6 m

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Suppose there is a uniform magnetic field, B, pointing into the page (so your index finger will point into the page). If the vel
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Explanation:

We shall show all given data in vector form and calculate the direction of force with the help of following formula

force F = q ( v x B )

q is charge , v is velocity and B is magnetic field.

Given B = - Bk ( i is  right  , j is  upwards  and k is straight up the page  )

v = v j

F = q ( vj x - Bk )

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The direction is towards left .

a ) If velocity is down

v = - v j

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Direction is right .

b ) v = v i

F = q ( vi x - Bk )

= qvB j

force is upwards

c ) v = - vi

F = q ( -vi x - Bk )

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force is downwards

d ) v = - v k

F = q( - vk x -Bk  )

= 0

No force will be created

e ) v =  v k

F = q(  vk x -Bk  )

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3 0
3 years ago
If the Earth absorbs more insolation from the sun than it radiates back, the Earth _____________.
professor190 [17]

Answer:

If the Earth absorbs more insolation from the sun than it radiates back, the Earth. warms

8 0
2 years ago
The universe could be considered an isolated system because
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A(many people think that no energy or matter exists outside the universe)

Explanation:

4 0
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A rocket passing the earth with high speed will look shorter for the stationary observer measuring the size on earth than travel
neonofarm [45]

Answer:

True

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This can be explained by the special theory of relativity for length contraction.

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The length of the rocket in this case, appears shorter to the observer on earth in the stationary reference frame which is improper frame whereas the traveler in the rocket is in the same inertial frame which is proper for the rocket's size measurement.

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