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Sergio039 [100]
3 years ago
10

Can a magnet attract a pure substance?

Physics
1 answer:
Salsk061 [2.6K]3 years ago
3 0

Answer:

Magnets strongly attract materials  which already themselves have magnetic domains. They do not significantly attract many metals like gold, aluminum, silver, and even some types of high-chromium stainless-steel, which lack such domains. In fact, pure gold is slightly repelled.

Explanation:

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If the speed of a wave is 2.5 x 103 m/s and has a wavelength of 5.80 x 10-7m, what is its frequency?
trasher [3.6K]

Answer:

4.31×10⁹Hz

Explanation:

v=2.5×10³ms⁻¹    wavelength=5.80×10⁻⁷m

v=frequency × wavelength

2.5×10³=f×5.80×10⁻⁷

f=4.31×10⁹Hz

8 0
4 years ago
14) the formula k2s indicates that
Ivan
14.) c) there are two potassium ions for each ion of sulfur. 15.) b) Lithium fluoride. 16.) d) carbon-12 atom. 17.) <span>c) nonmetal fluorine.</span>
6 0
3 years ago
Two bicycle tires are set rolling with the same initial speed of 4.0 m/s along a long, straight road, and the distance each trav
umka2103 [35]

Answer:

The coefficient of rolling friction will be "0.011".

Explanation:

The given values are:

Initial speed,

v_i = 4.0 \ m/s

then,

v_f=\frac{4.0}{2}

    =2.0 \ m/s

Distance,

s = 18.2 m

The acceleration of a bicycle will be:

⇒ a=\frac{v_f^2-v_i^2}{2s}

On substituting the given values, we get

⇒    =\frac{(2.0)^2-(4.0)^2}{2\times 18.2}

⇒    =\frac{4-8}{37}

⇒    =\frac{-4}{37}

⇒    =0.108 \ m/s^2

As we know,

⇒  f=ma

and,

⇒  \mu_rmg=ma

⇒       \mu_r=\frac{a}{g}

On substituting the values, we get

⇒       =\frac{0.108}{9.8}

⇒       =0.011

7 0
3 years ago
A circuit contains a single 220 pF capacitor hooked across a battery. It is desired to store three times as much energy in a com
Anettt [7]

Answer

The capacitor should be connected in parallel as parallel connection gives the arithmetic sum of capacitance which will give a corresponding sum of energy while capacitors in series gives the sum of the reciprocal if the individual capacitance

7 0
4 years ago
2.<br> ___ ___ is the number of wavelengths that pass a given point/second.
atroni [7]

Answer:

frequency tell me if im right

Explanation:

5 0
4 years ago
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