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Nookie1986 [14]
2 years ago
14

The total length of the wire of potentiometer is 10m. A potential gradient of 0.0015 V/cm is obtained when a steady current is p

assed through this wire.
Calculate,

i) the distance of null point on connecting a cell of emf 1.018 v

ii) the unknown P.d. if null point is obtained at 940 cm.​
Physics
1 answer:
andreyandreev [35.5K]2 years ago
3 0

Answer:

this picture might help you

Explanation:

if you think correct pls mark brainliest

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Two boats start together and race across a 48-km-wide lake and back. Boat A goes across at 48 km/h and returns at 48 km/h. Boat
nika2105 [10]

Answer:

Part 1)

Boat A will win the race

Part 2)

Boat A will win the race by 48 km as the 2nd boat will reach the other end while boat A will just touches the finish line

Part 3)

average velocity must be zero

Explanation:

As we know that the distance moved by the boat is given as

d = 48 km

now the time taken by the boat to move to and fro is given as

t = \frac{d}{v}

t = \frac{48 + 48}{48}

t = 2 hrs

Time taken by Boat B to cover the distance

t = \frac{48}{24} + \frac{48}{72}

t = 2.66 h

Part 1)

Boat A will win the race

Part 2)

Boat A will win the race by 48 km as the 2nd boat will reach the other end while boat A will just touches the finish line

Part 3)

Since the displacement of Boat A is zero

so average velocity must be zero

3 0
3 years ago
Cold air holds less water than warm air.<br> True<br> False
Vsevolod [243]

Answer:

The answer is for your question is :

Explanation:

True

4 0
2 years ago
Explain why the shortening velocity became slower as the load became heavier in this experiment. how well did the results compar
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<span>The shortening velocity refers to the speed of the contraction from the muscle shortening while lifting a load. Maximal shortening velocity is only attained with a minimal load. With a light load, the shortening velocity is at its Maximal shortening velocity. When the weight is heavy, the speed in which the muscle lifts the weight decreases in speed at a slower velocity.</span>
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Explain what happens to light when it is refracted at the surface of water.
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Light will make the object appear “broken” or in an irregular shape.

Refraction is the change in direction of waves.
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