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3 years ago

14

2 Calculate the distance from a srtaight wire where the magnetuc field is 0.66 T. the current in the wire is 4A and K = 2 x 10^-

7. [

1 answer:

nirvana33 [79]3 years ago

7 0

Answer:I don't know!!!!I don't know!!!!I don't know!!!!I don't know!!!!I don't know!!!!

Explanation:

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A 25 kg block is held against a compressed spring and then the spring is allowed to decompress giving the block a velocity. The

Alex787 [66]

Answer:

h=18.05 cm

Explanation:

Given that

m= 25 kg

K= 1300 N/m

x=26.4 cm

θ= 19.5 ∘

When the block just leave the spring then the speed of block = v m/s

From energy conservation

$\dfrac{1}{2}Kx^2=\dfrac{1}{2}mv^2$

$Kx^2=mv^2$

$v=\sqrt{\dfrac{kx^2}{m}}$

By putting the values

$v=\sqrt{\dfrac{kx^2}{m}}$

$v=\sqrt{\dfrac{1300\times 0.264^2}{25}}$

v=1.9 m/s

When block reach at the maximum height(h) position then the final speed of the block will be zero.

We know that

$V_f^2=V_i^2-2gh$

By putting the values

$0^2=1.9^2-2\times 10\times h$

h=0.1805 m

h=18.05 cm

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Less-dense air FLOATS in denser air. Since it's inside the balloon, it picks the balloon up when it floats.

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Answer:
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Explanation:

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