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antiseptic1488 [7]
4 years ago
7

How would you describe the magnetic field produced by a current in a straight wire?

Physics
2 answers:
Rama09 [41]4 years ago
6 0

Answer:

The lines of force run circles around the wire.

Explanation:

The region around a magnetic material or a moving charge particle is called magnetic field. The direction of magnetic field line is given by right hand thumb rule.

The thumb denotes the direction of electric current, then the curled finger will show the direction of magnetic field.

For a straight wire, the direction of magnetic field lines are circular.

Hence, the correct option is (C).  

Elena L [17]4 years ago
4 0
The answer to this is C. The reason being is because if you were to use a compass then it would be making circular motions towards the middle of the wire.
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Nitrogen is used to protect steel from water because nitrogen has ________.
tiny-mole [99]

Answer:

Nitrogen is used to protect steel from water because nitrogen has low reactivity.

Explanation:

Nitrogen is very low reactive element because it forms a gas when triple bond between two Nitrogen atoms. Due to low reactivity of Nitrogen the water does not react with the nitrogen and steel as well. So, for protection of steel Nitrogen is used.

4 0
3 years ago
You are pulling a 80 kg box with a rope. The force you exert on the box is 90 N at 30 degrees from the ground. What would be the
Feliz [49]

Answer:

Coefficient of dynamic friction= md= 0.09931

Explanation:

To determine the coefficient of dynamic friction we must first match the friction force that is permendicular to the normal force of the block and opposite to the drag force, to the component of the drag force in this same direction. This component on the X axis of the drag force will be:

F= 90N × cos(30°) = 77.9423N

This component on the X axis of the drag force must be equal to the dynamic friction force that is equal to the coefficient of dynamic friction by the normal force of the block weight:

F= md × m × g= 77.9423N

m= mass of the block

md= coefficient of dynamic friction

g= gravity acceleration

F= md × 80kg× 9.81 (m/s²)= 77.9423(kg×m/s²)

md= (77.9423(kg×m/s²) / 784.8 (kg×m/s²)) = 0.09931

7 0
3 years ago
A gymnast does a one-arm handstand. The humerus, which is the upper arm bone between the elbow and the shoulder joint, may be ap
igor_vitrenko [27]

Answer:

                  = 5.241 \times 10^{-5} m

Explanation:

Given:

 Length of cylinder is, L = 0.27 m

Outer radius of cylinder is, r_out = 1.12×10^{-2} m

Inner radius of cylinder is, r_in = 3.9×10^{-3} m

Mass of person, m = 60 kg

 Young's modulus , Y = 9.4×10^9 N/m2

(a)

     Compressional strain of humerous is,

Strain = \frac{Stress}{Young's\ modulus}

     \frac{\Delta L}{L_0}   = \frac{\frac{F}{A}}{Y}

                  = \frac{(mg)}{\pi(r_out^2 - r_in^2  )Y}

                  = \frac{(60 kg)(9.8 m/s2 )}{(\pi)[( 1.12\times 10^{-2})^2 - (3.9\times 10^{-3} m)^2] (9.4\times 10^9 N/m2 )}[tex]                   [tex]= 1.80\times 10^{-4} m

(b)  Let assume that humerous is compressed by ΔL

       Since,   strain = ΔL/L0

      (1.80 \times 10^{-4} m) = ΔL / 0.29 m

     Thus,

           ΔL = (4.56 \times 10^{-4} m)(0.29 m)

                  = 5.241 \times 10^{-5} m

7 0
3 years ago
What's the symbol for an ionized gallium atom?
Talja [164]
The symbol for gallium is Ga, so when gallium becomes an ionized atom it's symbol then changes to Ga+3
6 0
4 years ago
Which of the following light waves will have the highest frequency?
ira [324]

Answer:

a. blue light

Explanation: hope this helps :)

8 0
3 years ago
Read 2 more answers
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