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vladimir2022 [97]
3 years ago
9

What is electric current

Physics
1 answer:
Bond [772]3 years ago
5 0

Answer:

Electric current is electric charge in motion. It can take the form of a sudden discharge of static electricity, such as a lightning bolt or a spark between your finger and a ground light switch plate. ... Most electric charge is carried by the electrons and protons within an atom.

Explanation:

because it is

You might be interested in
A long wire carries a current 5 A from west to east. A magnetic compass pointing North is placed underneath the wire at a distan
Gemiola [76]

Answer:

no deflection

Explanation:

current is flowing from west to east. As the magnetic field of a long wire carrying current is circular, its direction will be north below the wire and south above the wire (according to the right hand rule). So, when the compass is placed underneath the wire, it will still point towards the north direction.

6 0
3 years ago
X-rays take pictures of ______.
raketka [301]


The answer - all of the above.

X -rays are applied in many ways and for various purposes in every day life. They are defined as powerful waves of electromagnetic energy. They are able to penetrate most materials both organic and inorganic.

Their ability to penetrate organic material has made them especially useful in medicine where they can penetrate the body and reveal internal structures such as bones and organs.

In the airports, they are used for security purposes to check in luggage  bags for prohibited or dangerous items.

In  art, they are widely used by authenticators check for types of paper, materials, changes of composition and other clues to help establish authenticity of art pieces.  


3 0
3 years ago
A tall building is swaying back and forth on a gusty day. The wind picks up and doubles the amplitude of the oscillation. By wha
xz_007 [3.2K]

Answer:

by a factor of 2

Explanation:

Maximum speed of a body in simple harmonic motion relate to the amplitude  by the following formula:

v ( maximum speed in m/s ) = x ( amplitude in meters ) √K /m where K is in N/m and m is kg

v is directly proportional to the amplitude and increases as the amplitude increases by a factor of 2

4 0
3 years ago
A cue ball, moving with 9.0 N·s of momentum strikes the nine-ball at rest. The nine-ball moves off with 2.0 N·s in the original
lisov135 [29]

Answer:

P = 7.28 N.s

Explanation:

given,

initial momentum of cue ball in x- direction,P₁ = 9 N.s

momentum of nine ball in  x-  direction, P₂ = 2 N.s

momentum in perpendicular direction i.e. y - direction,P'₂ = 2 N.s

momentum of the cue after collision = ?

using conservation of momentum

in x- direction

P₁ + p = x  + P₂

p is the initial momentum of the nine balls which is equal to zero.

9 + 0  = x  + 2

x = 7 N.s

momentum in x-direction.

equating along y-direction

P'₁ + p = y + P'₂

0 + 0 = y + 2

y = -2 N.s

the momentum of the cue ball after collision is equal to resultant of the momentum .

P = \sqrt{x^2+y^2}

P = \sqrt{7^2+(-2)^2}

      P = 7.28 N.s

the momentum of the cue ball after collision is equal to P = 7.28 N.s

7 0
3 years ago
what happens to the average molecular speed in an ideal gas if you triple the volume and keep the same temperature ?
kipiarov [429]

Answer:

If you hold the temperature of an ideal gas constant, what happens to its volume when you triple the pressure? For T fixed, P is proportional to 1/V or V is proportional to 1/P. Tripling P reduces V to 1/3. ... If T is constant, the speeds of the average speeds and kinetic energy of the atomic particles remain constant.

I hope this helps!

4 0
3 years ago
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