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2 years ago

14

An electric current is created in a long thin wire. How will increasing the current and changing the direction of the current ef

fect the direction that a compass placed under the wire will point?
a. It compass will spin continuously.
b. The compass will flip exactly 180 degrees.
c. The compass will spin exactly 360 degrees.
d. The compass will not react and still point north.

2 answers:

PilotLPTM [1.2K]2 years ago

8 0

The answer is : B. The compass will spin exactly 360 Degrees

Compass will point out to the earth's magnetic field. If we change the direction of the current , we created an effect which make the compass detect the magnetic field in the exact opposite direction, that is why it will flip exactly 180 degrees

dexar [7]2 years ago

6 0

On USATestprep it is B 180 degrease

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Artyom0805 [142]

Answer:

The heat transferred into the system is 183.5 J.

Explanation:

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where;

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Q is the heat transfer into the system

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Given;

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2 years ago

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Blababa [14]

#1

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#2

As we know that

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here we know that

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now force is given as

$F = 40.95 \times (2.02\times 10^4) = 8.27 \times 10^5 N$

#3

As we know that density of water will vary with the height as given below

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here we know that

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#4

as we know that pressure changes with depth as per following equation

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$P = 3 P_0$

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$3P_0 = P_0 + \rho g h$

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#5

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2 years ago

slamgirl [31]

Answer:

Speed at which it will reach the ground is given as

$v_f = 46.8 m/s$

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t = 6.3 s

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now when it will reach the ground then we have

$y = v_y t + \frac{1}{2} at^2$

so we have

$-100 = 15 t - \frac{1}{2}(-9.81) t^2$

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so we have

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2 years ago

A child throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00

vivado [14]

Answer:

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$t$ = time of travel

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$v_{ox}$ = initial velocity along horizontal direction = $v Sin\theta$ = 8 Cos40 = 6.13 m/s

$a_{x}$ = acceleration along vertical direction = 0 m/s²

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$x$ = horizontal displacement = ?

Using the kinematics equation

$x = v_{ox}t + (0.5)a_{x}t^{2}$

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2 years ago

Part B For this activity, you'll analyze the motion of the marked spot on the skateboarder's leg. For each dropdown labeled “cm”

Anika [276]

Answer:

Explanation:

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1 year ago