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lilavasa [31]
3 years ago
13

Which object has the magnetic domains shown in the image?

Physics
2 answers:
EleoNora [17]3 years ago
8 0

Answer:

D

Explanation:

just did it on ap3x

Nana76 [90]3 years ago
4 0

Answer:

Explanation:

D

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Two identical blocks of iron are placed in contact, one at 10°C and the other at 20°C. If the cooler block cools to 5°C and the
Alenkinab [10]

Answer:

this is violation of II law of thermodynamics

Explanation:

As per 2nd law of thermodynamics we know that heat always flows from high temperature to low temperature

If heat flows from low temperature to high temperature then it is only possible when some external work is done on the system

So here it says that initially two blocks are at 10 degree C and 20 degree C

Now the cool object will become cooler and hot object becomes hotter

which shows that heat is flowing from low temperature to high temperature

So this is violation of II law of thermodynamics

8 0
4 years ago
12.What did Chargaff said about DNA molecules?
Drupady [299]

Answer:

Chargaff rule: The rule that in DNA there is always equality in quantity between the bases A and T and between the bases G and C. (A is adenine, T is thymine, G is guanine, and C is cytosine.) Named for the great Austrian-American biochemist Erwin Chargaff (1905-2002) at Columbia University who discovered this rule.

3 0
3 years ago
A car drives at a constant speed of 21 m/s around a circle with radius 100 m. What is the centripetal acceleration of the car?
Sauron [17]

If you look below, we are using the centripetal acceleration formula.  You just need to plug your numbers in and it should work!A_c = \frac{v^2}{r} \\A_c=\frac{21^2}{100} \\A_c=\frac{441}{100} \\A_c= 4.41m/s/s

6 0
3 years ago
A piece of amber is charged by rubbing with a piece of fur. If the net excess charge on the fur is +8.0 nC (+8.0 10-9 C), how ma
Ann [662]

Answer:

Number of electron on the fur will be 5\times 10^{10}electron

Explanation:

We have given net charge on the fur q=8nC=8\times 10^{-9}C

Charge on one electron e=1.6\times 10^{-19}C

Let there are n number of electrons

So ne=8\times 10^{-9}

n\times 1.6\times 10^{-19}=8\times 10^{-9}

n=5\times 10^{10}electron

So number of electron on the fur will be 5\times 10^{10}electron

6 0
3 years ago
The location(s) an electron can occupy around the nucleus depends on the electron's ____________.
enyata [817]
I think that it is mass?
6 0
4 years ago
Read 2 more answers
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