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3 years ago

Please solve for 15 points. Please don’t input a link.

Physics

1 answer:

melomori [17]3 years ago

6 0

Answer:

a). Single replacement.

Explanation:

Because one element replaces another element in a compound

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Answer:

scratching a surface to make it rougher

increasing the size of a flying object

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3 years ago

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Draw and label a picture or make a real life model of something to display conservation of energy. Make sure it is something tha

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The picture shows it has a real life something to display conservation of energy with kinetic energy and potential energy.

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Kinetic energy is to calculated by KE= mass×velocity²/2 as a fraction.

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And the another picture it has a <span>energy, kinetic energy, mechanical energy, conservation of energy.

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3 years ago

Find the radius using the centripetal acceleration formula: acceleration = 6.6 x 10^6 m/s^2 velocity = 2,000 rev/s

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the radius is 231

Explanation:

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3 years ago

A long straight wire carries current to the right of the page. A rectangular loop is positioned directly under the wire in the p

slavikrds [6]

Answer:

Correct option A.

The net force exerted by this loop on the straight wire with the current is directed TOWARDS THE LOOP

Explanation:

The magnetic field exerts a force on a current-carrying wire in a direction given by the right-hand rule 1 (the same direction as that on the individual moving charges). This force can easily be large enough to move the wire since typical currents consist of very large numbers of moving charges.

Given that,

The wire's current is directed towards the right of the page.

The rectangular loops carry current in a clockwise direction.

Since the 'dot' field is increasing hence the induced magnetic field is 'cross', i.e. into the page and by the right-hand rule, the induced current is clockwise.

Then the magnetic field is into the page.

Since was known that

F= iL×B

Note the current is through the wire. Then, the length is in direction of the current.

Note: this equation gives the magnetic force that acts on a length L of a straight wire carrying a current (i) and immersed in a uniform magnetic field (B), that is perpendicular to the wire.

So, the magnetic field is always perpendicular to the current.

So using right hand rule,

F = i(L×B)

The length is to the right i.e. +x direction and the Magnetic field is perpendicular to the plane, i.e. in the +z direction

F = i (L•i × B•k)

F = iLB (i×k)

F = iLB•(-j)

F = -iLB•j

Then, the force is in the negative y-direction i.e. towards the loop.

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