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docker41 [41]
2 years ago
10

When an explanation to a problem is accepted as always true, it is

Physics
2 answers:
Vaselesa [24]2 years ago
8 0
I believe the best answer is law, as scientific laws are accepted to be true under the proper conditions. 
Alenkasestr [34]2 years ago
6 0

Answer: law

Explanation: A law is a rule that is used to explain the observation of a body. It could be represented in form of verbal or mathematically.

when the answer is considered as always true under every condition tested, it becomes a law that would be used to know other variables.

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The tallest building in the world, according to some architectural standards, is the Taipei 101 in Taiwan, at a height of 1671 f
Andrej [43]

Answer:

35.14°C

Explanation:

The equation for linear thermal expansion is \Delta L = \alpha L_0\Delta T, which means that a bar of length L_0 with a thermal expansion coefficient \alpha under a temperature variation \Delta T will experiment a length variation \Delta L.

We have then \Delta L = 0.481 foot, L_0 = 1671 feet and \alpha = 0.000013 per centigrade degree (this is just the linear thermal expansion of steel that you must find in a table), which means from the equation for linear thermal expansion that we have a \Delta T =\frac{\Delta L }{\alpha L_0} = 22.14°. As said before, these degrees are centigrades (Celsius or Kelvin, it does not matter since it is only a variation), and the foot units cancel on the equation, showing no further conversion was needed.

Since our temperature on a cool spring day was 13.0°C, our new temperature must be T_f=T_0+\Delta T = 35.14°C

3 0
3 years ago
What happens to the magnetic domains in a material when the material is placed in a strong magnetic field?
Allisa [31]
If it is diamagnetic then it magnetise opposite to magnetic field
if paramagnetic it weekly magnetise in direction of magnetic field
if ferromagnetic it strongly magnetise in direction of magnetic field
6 0
2 years ago
A projectile is launched with an initial velocity of 25m/s at 35 degrees above the horizontal. assuming that the projectile retu
Dovator [93]
Speed is the same as the initial: 25m/s.

*if* you need vectors though:

final velocity = (25*cos(35), -25*sin(35) ) m/s


3 0
3 years ago
3) show thal escape veloerty ve where symbols have their usual meaning?​
murzikaleks [220]

Answer:

v = \sqrt{\frac{2GM}{r} }

The formula for escape velocity where:

G - Gravitational constant (9.81 etc.)

M - the mass of the object the escape should be made from

r - distance to the centre of that mass

8 0
2 years ago
Describe the magnetic field lines around a bar magnet
Sophie [7]
The lines can be traced out with a compass. The needle is like a permanent magnet and the north indicator is the north end of a magnet.
6 0
3 years ago
Read 2 more answers
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