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slega [8]
3 years ago
13

What would decrease the resistance of wires carrying an electric current?

Physics
2 answers:
rosijanka [135]3 years ago
7 0
Resistance, R = ρL / A

where R = Resistance, ρ = constant called Resistivity, L = Length and A = Area,

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

So from the options, that correspond to:

<span>shorter wires</span>
DochEvi [55]3 years ago
5 0
I believe the answer is shorter wires because there is less to travel
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A uniform solid disk and a uniform hoop are placed side by side at the top of an incline of height h. If they are released from
svlad2 [7]

Answer:

) the uniform disk has a lower moment of inertia and arrives first.

Explanation:

(a) the uniform disk has a lower moment of inertia and arrives first.

(b) Let's say the disk has mass m and radius r, and

the hoop has mass M and radius R.

disk: initial E = PE = mgh

I = ½mr², so KE = ½mv² + ½Iω² = ½mv² + ½(½mr²)(v/r)² = (3/4)mv² = mgh

m cancels, leaving v² = 4gh / 3

hoop: initial E = Mgh

I = MR², so KE = ½MV² + ½(MR²)(V/R)² = MV² = Mgh

M cancels, leaving V² = gh

Vdisk = √(4gh/3) > Vhoop = √(gh)

3 0
4 years ago
2) What are the directions of the velocity and acceleration of an object in
zaharov [31]
Motion because the motion is the range
7 0
4 years ago
Read 2 more answers
Which of the following describes how the current in a circuit can be increased. Select all that apply.
andreyandreev [35.5K]
Answer:
Option B: Increase the voltage, while keeping the resistance constant.

Explanation:
Current is directly proportional to voltage, but indirectly proportional to resistance.
5 0
3 years ago
If four students separately measure the density of a rock, and they all have very low percent
lesya692 [45]

Answer:

Their measured results are closer to the exact or true value. Hence, their measured value is considered to be more accurate.

Explanation:

Considering the situation described above, the accuracy of a measured value depicts how closely a measured value is to the accurate value.

Hence, since the students' measured values have very low percent differences, it shows the similarity of computations or estimates to the actual values, which in turn offers a smaller measurement error.

Therefore, their measured results are closer to the exact or true value, which implies that their measured value is considered to be more accurate.

7 0
3 years ago
A flask containing argon gas is connected to an closed-ended mercury manometer. The closed end is under vacuum. If the mercury l
iogann1982 [59]

Answer:

230 torr

Explanation:

Given that

P = 230 mm of Hg

If argon gas and mercury is in equilibrium position then the pressure on the both side will be same .

As we know that

1 torr = 1 mm of Hg

So the pressure of the argon will be 230 torr .

Unit conversion

1 torr = 1 mm of Hg

1 bar = 100 KPa = 10⁵ Pa =  10⁵ N/m² = 0.1 MPa = 0.1 x 10⁶ Pa

5 0
3 years ago
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