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Advocard [28]
3 years ago
10

A straight wire, labeled as Wire A, lies horizontally on a tabletop and is oriented to run north-south. A conventional current o

f 1.0 amperes runs in the wire directed towards the north. A second wire, labeled as Wire B, is also laid on the tabletop oriented north- south. Which of the following statements is true?
a. If Wire B carries no current in it and lies to the left (west) of wire A, then it will experience an attractive force to the right towards wire A).
b. If Wire B carries a northward conventional current and lies to the left (west) of wire A, then it will experience an attractive force to the right (towards Wire A).
c. If Wire B carries a northward conventional current and lies to the right (east) of wire A, then it will experience a repulsive force to the right (away from Wire A).
d. If Wire B carries a southward conventional current and lies to the left (west) of wire A, then it will experience a repulsive force to the left (away from Wire A).
Physics
1 answer:
Semmy [17]3 years ago
3 0

Answer:

b. If Wire B carries a northward conventional current and lies to the left (west) of wire A, then it will experience an attractive force to the right (towards Wire A).

d. If Wire B carries a southward conventional current and lies to the left (west) of wire A, then it will experience a repulsive force to the left (away from Wire A).

Explanation:

Two parallel conductors experience attractive force when the current flowing in the conductors are in the same direction.

Also two parallel conductors experience repulsive force when the current flowing in the conductors are in opposite direction.

Therefore, b and d are the correct options.

b. If Wire B carries a northward conventional current and lies to the left (west) of wire A, then it will experience an attractive force to the right (towards Wire A).

d. If Wire B carries a southward conventional current and lies to the left (west) of wire A, then it will experience a repulsive force to the left (away from Wire A).

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what is the force of static friction on Earth between a 2000 kg car and the road if a coefficient of static friction is 0.4?​
Nana76 [90]

Answer:

7840 N

Explanation:

F = Nμ

F = mgμ

F = (2000 kg) (9.8 m/s²) (0.4)

F = 7840 N

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What is a mycorrhiza
Tamiku [17]

Answer:

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A place-kicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear
Kazeer [188]

Answer:

The difference is height is \Delta h  =6.92 \ m

Explanation:

From the question we are told that

     The distance of ball  from the goal is d = 36.0 \ m

    The height of the crossbar is  h =  3.05 \ m

       The speed of the ball is v =  21.6 \ m/s

       The angle at which the ball was kicked is \theta  =  50 ^o

The height attained by the ball is mathematically represented as

      H  =  v_v * t  - \frac{1}{2} gt^2

Where v_v is the vertical component of  velocity which is mathematically represented as

     v_v =  v * sin (\theta )

substituting values

     v_v =  21.6 *  (sin (50 ))

     v_v =  16.55  \ m/s

Now the time taken is  evaluated as

       t =  \frac{d}{v * cos(\theta )}

substituting value

     t =  \frac{36}{21.6 * cos(50 )}

    t =  2.593 \ s

So

     H  =  16.55 * 2.593  - \frac{1}{2} * 9.8 * (2.593)^3

     H  =  9.97 \ m

The difference  in height is mathematically evaluated as

      \Delta h  =  H - h

substituting value

    \Delta h  = 9.97 -  3.05

    \Delta h  =6.92 \ m

3 0
3 years ago
?
Montano1993 [528]

Answer:\sqrt{65} m/s

Explanation:

6 0
2 years ago
17. What are the two factors that can cause the volume of water in the ocean to change? A. Temperature and pressure B. Gravity a
balandron [24]
<h2>Answer: D. Salinity level and temperature</h2>

Explanation:

The density D of the water is given by a relation between its mass m and its volume V:

D=\frac{m}{V}

Isolating the volume:

V=\frac{m}{D}

This means the <u>volume of the water will depend on its mass and its density</u>.

In this sense, the two factors that affect the volume of seawater are <u>salinity level and temperature. </u>

This is because the salinity (<u>amount of salt in water</u>) changes the its mass and its density, therefore its volume. The higher the salinity, the greater the volume.  

In the case of temperature, when it increases, the volume of water also increases and when the temperature decreases, the volume also decreases.

4 0
3 years ago
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