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Tanzania [10]
3 years ago
7

A magnetic compass is placed near an insulated copper wire. When the wire is connected to a battery and a current is created, th

e compass needle moves and changes its position. Which is the best explanation for the production of a force that causes the needle to move?
(1)The copper wire magnetizes the compass needle and exerts the force on the compass needle.
(2)The compass needle magnetizes the copper wire and exerts the force on the compass needle.
(3)The insulation on the wire becomes charged, which exerts the force on the compass needle.
(4)The current in the wire produces a magnetic field that exerts the force on the compass needle.
Physics
2 answers:
olga nikolaevna [1]3 years ago
5 0

acts at a distance. fjghfrhgdfuighuidfgui

Luba_88 [7]3 years ago
4 0
4

Every current through a wire produced a magnetic field. And since the magnetic field of Earth is weak, it will get attracted towards the wire.
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The last main subatomic particle to be discovered was the _____.
kati45 [8]

<span>The last main subatomic particle to be discovered was the antihelium-4.  It was discovered on 2011 and it is measured and produces through the STAR detector.  The Antihelium-4 was discovered accidentally when an experiment was conducted.  It is also the first particle that was discovered by the means of experiment.</span>

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4 years ago
On the incomplete ray diagram for an object in front of a curved mirror, trace the path of Ray 1 as you would do to find the loc
Alisiya [41]

Answer:

<u></u>

  • <u>See attached the ray diagram with the path of Ray 1, which must pass through the focal point, F.</u>

Explanation:

The <em>curved mirror</em> shown is a converging lens.

<em>To find the location and size of the image</em> formed by a converging lens, you must draw two rays: one ray is from the upper tip of the object (the pen in your figure) that is in front of the mirror, parallel to the horizontal axis until the lens (<em>Ray 1</em> in your figure) which then bends through the focal point (F in your figure). That is the ray that you must complete in your figure.

The attached figure shows this ray in blue.

The other ray would be from the upper tip of the pen straight through the center of the lens (this is not included in the figure, by instructions of the question).

4 0
3 years ago
A glass of root beer with a scoop of ice cream floating on top and a straw sticking out.
jeka94

Answer:

The root beer exerts a force on all sides of the ice cream. These forces are all equal and cancel each other out. Gravity pushes downward on the ice cream. This can also be called the weight of the ice cream.

Explanation:

8 0
3 years ago
Read 2 more answers
A 3.7kg block on a horizontal frictionless surface is attached to a spring whose force constant is 450 N/m. The block is pulled
earnstyle [38]

Answer:

U=1.44 J

Explanation:

Given that

m = 3.7 kg

K = 450 N/m

X= 0.08 m

We know that spring stored potential energy(U) and this potential energy given as

U=\dfrac{1}{2}KX^2

By putting the values

U=\dfrac{1}{2}KX^2

U=\dfrac{1}{2}\times 450\times 0.08^2

U=1.44 J

5 0
3 years ago
At surface level, a diving bell has an air space of 4.25 m3. When used during an exploration, it is submerged 60.0 metres. At th
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Answer:

volume of the airspace=0.605m^3

Explanation:

Patm = 10^5 N/m^2

Depth= 60 metres

Pressure at the depth = ?

Density = 1.025 g/cm3 = 1025 kg/m3

P = Patm + hσg

P = 10^5 + 60*1025*9.8

P = 702700 N/m^2

P = 7.027 atm

Since the temperature is constant, Boyle’s law holds

P1V1 = P2V2

P1 = 1 atm  

P1, initial pressure of the bell(atm pressure) = 1 atm

The initial volume of the airspace, V1 = 4.25 m^3

Final pressure at the depth = 7.027 atm

Applying the Boyle’s lay

1*4.25 = 7.027 * V2

V2 = 4.25/7.027

V2 = 0.605m^3

8 0
4 years ago
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