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DiKsa [7]
3 years ago
13

Anna learned that every magnet has a north and a south end called poles. One day, while she is playing with magnets she notices

that when she puts the north end of a magnet near the south end of another magnet, they pull together. What can Anna conclude from her observation?
A) Opposite poles of magnets repel.
B) Opposite poles of magnets attract.
C) The north pole picks up iron nails.
D) Only the north pole has an attractive force.
Physics
2 answers:
alekssr [168]3 years ago
8 0
B i took the benchmark for k12

maria [59]3 years ago
4 0
B) opposite poles of magnets attract
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One mole of titanium contains how many atoms?
Vladimir [108]

Answer:

\boxed {\boxed {\sf D. \ 6.02*10^{23} \ atoms}}

Explanation:

One mole of a substance contains the same amount of representative particles. These particles can be atoms, molecules, ions, or formula units. In this case, the particles are atoms of titanium.

Regardless of the particles, there will always be <u>6.02*10²³</u> (also known as Avogadro's Number) particles in one mole of a substance.

Therefore, the best answer for 1 mole of titanium is D. 6.02*10²³ atoms.

3 0
3 years ago
Read 2 more answers
PLEASE HELP
GREYUIT [131]

Answer:

h = 1.8 m

Explanation:

The initial velocity of the glove, u =- 6 m/s

We need to find the maximum height of the glove. Let it is equal to h. Using equation of kinematics. At the maximum height v = 0

v^2-u^2=2ah, h is the maximum height and a = -g

0^2-(6)^2=2\times (-10)\times h\\\\h=\dfrac{36}{20}\\\\h=1.8\ m

Hence, it will go up to a height of 1.8 m.

4 0
2 years ago
the resistance of a wire of length 80cm and of uniform area of cross-section 0.025cmsq., is found to be 1.50 ohm. Calculate spec
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Specific\ resistance\ =resistivity\\&#10;From\ formula\ on \ resistance:\ R= \frac{pL}{A}\ p-resistivity,\ L-length,\\ A-area\ of\ cross\ section\\&#10;p= \frac{R*A}{L}= \frac{1,5Ohm*0,025*10^{-4}m^2 }{80* 10^{-2}m }=0,0003515625 Ohm*m
3 0
3 years ago
Will an object with more mass roll faster down a hill?
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Over time, yes. It will over time gain more momentum
5 0
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dezoksy [38]
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3 years ago
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