From the formula, over, the Resistance R would decrease if the length is small.




You are watching: What would decrease the resistance of wires carrying an electric current?


derekwadsworth.com:

Shorter wires

Explanation:

The formula supplied to find the resistance of wires transporting electrical current is provided by :

*
...............(1)

Where

*
is the resistivity of the substance

l is the size of the wire

A is the location of cross section

From equation (1), it is clear that the resistance of the wire is directly proportional to its size. So, by decreasing the size of the wire, the resistance of the wire decrease. Hence, the correct alternative is (a).



. A bird is flying with a rate of 18.0 m/s over water when it accidentally drops a 2.00 kg fish. If the altitude of the bird is
V^2 = u^2 + 2gr, wbelow v - speed, u - initial speed=0, r - displacement (or height)v^2 = 0 + 2*10*5.4v = 10.2 m/s

A block of mass M is inserted on an inclined surchallenge. The incline renders an angle theta through respect to the horizontal. What are th

derekwadsworth.com:

*

Explanation:

As we recognize that the block is inserted on the inclined plane

So below we understand that the components of weight of the block are

*
alengthy the inclined plane

over component of the weight will be counter balanced by friction pressure as it will certainly be at rest

*
perpendicular to the inclined plane

over component is perpendicular to inclined airplane surchallenge and it will certainly be counter balanced by the normal force

So below correct derekwadsworth.com for normal force will be

*



Two marbles (m = 0.050 kg each) moving on a table TOWARDS each other via the rate of 0.3 m/s collide, and start relocating away fr

derekwadsworth.com:

V1 = ____0.3______ m/s, V2 = ____-0.3______ m/s,

p1 = ____0.015______ kg m/s, p2 = ___-0.015_______ kg m/s,

pcomplete = _0___________ kg m/s

Explanation:

Taking the marble round that moves from best to left as Marble 1 and the one that moves from left to appropriate as Marble 2. We take direction from left to appropriate as negative and also from appropriate to left as positive. Because of this, velocity of marble 1 will certainly be +0.3 m/s while velocity of marble 2 will be -0.3 m/s. The mass of marble 1, m2 0.05 Kg and very same to marble 2, m2=0.05 Kg

Momentum is product of mass and velocity hence utilizing p to recurrent momentum

P1=0.05*0.3=0.015 Kg m/s

P2=0.05*-0.3=-0.015 Kg m/s

V1=0.3 m/s, V2=-0.3 m/s

The full momentum before collision will certainly be the amount of P1 and also P2 thus 0.015 Kg m/s+-0.015 Kg m/s=0

Ptotal=0 Kg m/s


7 0
8 months ago

What is the acceleration of the object
Zielflug <23.3K>

derekwadsworth.com:

it is decreasing in speed

Explanation:


8 0
8 months ago
Calculate the occupational feature that requires a 475 nm photon to eject an electron of 1.25 eV.
lapo4ka <179>
The job-related attribute has actually the formulaE = h vwbelow E is the energyh is the constantv is the frequencyBecause the offered is wavelength, we usage the connection in between frequency and also wavelengthv = c / λwbelow c is the rate of lightλ is the wavelengthSo.E = h c / λh = Eλ / c = 1.25 eV (475x10-9m) / (3x10^8 m/s)h = 1.9792 x 10^-15The work-related attribute is:E = 1.9792 x 10-15 v
3 0
7 months ago
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