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3 years ago

I need some help pls

Physics

1 answer:

Lina20 [59]3 years ago

4 0

Answer:

And the bigger intensity

Explanation:

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Which one of the following statements concerning superconductors is false? A constant current can be maintained in a superconduc

julsineya [31]

Answer:

All materials are superconducting at temperatures near absolute zero kelvin.

Explanation:

All materials are superconducting at temperatures near absolute zero kelvin is false concerning superconductors.

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3 years ago

What resistance would produce a current of 120A from a 6-volt battery?

andriy [413]

120/6=20 ohms :) would be the ans

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3 years ago

One event occurs at the origin at t equal to zero, and a second events occurs at the point x=5m along the x-axis at time with ct

Anastasy [175]

Answer:

The separation will be spacelike.

The first event can't cause the second event, as there exist an frame of reference in which both happens at the same time, in different positions, so, if there were causally connected, it will imply an instant connection, this is faster than light.

Explanation:

We can define the separation between two events (using the + - - - signature) as :

$(\Delta s )^2 = (ct_2 - c t_1 )^2 - (x_2 - x_1)^2$

where the separation will be lightlike if is equal to zero, timelike if is positive and spacelike if is negative.

For our problem

$c t_1 = 0$

$x_1 = 0$

$ct_2 = 4 \ m$

$x_2 = 5 \ m$

$(\Delta s )^2 = (4 \ m - 0 )^2 - ( 5 \ m - 0)^2$

$(\Delta s )^2 = (4 \ m )^2 - ( 5 \ m 0)^2$

$(\Delta s )^2 = 16 \ m^ 2 - 25 \ m^2$

$(\Delta s )^2 = - 9\ m^2$

So the separation will be spacelike, and the first event can't cause the second event, as there exist an frame of reference in which both happens at the same time, in different positions, so, if there were causally connected, it will imply an instant connection, this is faster than light.

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3 years ago

What major body of water did the new states of kentucky and tennessee

chubhunter [2.5K]

The major water body given access to the new states of Kentucky and tennessee was the Mississippi river.

Explanation:

The Mississippi river serves to be the second ranked longest river located in the North America. the access was given to United States by the Kentucky state and Tennessee state.

The access granted was requested in order to serve the purpose of trade across. The Mississippi river have been often remarked as the super highway to the sea. Irrigation of crops with the transportation aid along with the food availability, all calls for the grant access to the major water body.

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3 years ago

A liquid thermometer can be used to test for fevers. When body temperature increases,

aleksandr82 [10.1K]

Answer:A

Explanation:

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3 years ago