2 years ago

20. Unlike other kinds of liquids, volatile liquids

Physics

1 answer:

Nana76 [90]2 years ago

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A classic demonstration illustrating eddy currents is performed by dropping a permanent magnet inside a conducting cylinder. The

kvv77 [185]

Answer:

The correct solution is "0.69 N".

Explanation:

The given values are:

Mass of magnet,

m = 70 g

or,

= 0.07 kg

Width,

= 1.0 cm

Velocity,

= 10 cm/s

Length of the pipe,

= 80 cm

Whenever the velocity is constant, then the net force which is acting on the magnet will be "0".

On the magnet,

The up-ward force will be:

⇒ $F=mg$

On substituting the values, we get

⇒ $=0.07\times 9.8$

⇒ $=0.69 \ N$

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2 years ago

A Gaussian surface in the form of a hemisphere of radius R = 3.04 cm lies in a uniform electric field of magnitude E = 1.64 N/C.

Likurg_2 [28]

Answer:

Part a)

$\phi = -4.76 \times 10^{-3} Nm^2/C$

Part b)

$\phi_{curved} = 4.76 \times 10^{-3} Nm^2/C$

Explanation:

Part a)

Electric flux entering into the base

so it is given as

$\phi = E.A$

$\phi = - EA$

$\phi = -(1.64)(\pi r^2)$

$\phi = -(1.64)(\pi\times 0.0304^2)$

$\phi = -4.76 \times 10^{-3} Nm^2/C$

Part b)

Now since we know that there is no enclosed charge in the hemisphere

so net flux must be zero

$\phi_{curved} + \phi_{flat} = 0$

$\phi_{curved} - 4.76 \times 10^{-3} = 0$

$\phi_{curved} = 4.76 \times 10^{-3} Nm^2/C$

7 0

2 years ago

A 25 kg mass is hanging from two cables, each with their own tension. Cable 1 is connected to the

Georgia [21]

Answer:

a. one line down one line to the right one live to the northwest from the object

b. t1=190 t2=310

Explanation:

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2 years ago

While John is traveling along a straight interstate

lora16 [44]

Answi dont know

Explanation:

i dont know

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2 years ago

2. Neutrons have a ____<br> charge.<br> a. positive<br> b. negative<br> c. neutral

AnnyKZ [126]

Answer:

b. negative

Explanation:

neutrons have a negative charge and protons have a proton has a positive charge

3 0

2 years ago

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