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3 years ago

Choose the best description of a magnetic field line

Physics

2 answers:

Anestetic [448]3 years ago

4 0

Answer:

A magnetic field line shows the direction a compass needle would point APEX Verified

Explanation:

LiRa [457]3 years ago

3 0

Answer:

A magnetic field line can never cross another field line. The magnetic field is unique at every point in space. Magnetic field lines are continuous and unbroken, forming closed loops. Magnetic field lines are defined to begin on the north pole of a magnet and terminate on the south pole.

Explanation:

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a 12.0L container is filled with a gas to a pressure of 2660 torr at 0°C. At what temp. will the pressure inside the container b

Alexxx [7]

$\frac{p1}{t1} = \frac{p2}{t2}$

Pressure Law: constant volume

Convert all Temperatures to Kelvin

0°C= 273K

$\frac{2660}{273} = \frac{3040}{t2} \\ \\ 3040 \times 273 = t2 \times 2660 \\ \\ 829920 \div 2660 = t2 \\ \\ t2 = 312$

answer= 312Kelvin

6 0

3 years ago

A skier has an acceleration of 2.5 m/s2. How long does it take her to come to a complete stop from a speed of 18 m/s?

aleksandr82 [10.1K]

(Assuming acceleration is -2.5m/s2) 7.2 seconds.

4 0

3 years ago

Read 2 more answers

What are the variables of Boyle's law?

vesna_86 [32]

Answer: pressure and volume

Explanation:

Boyle's law states that the volume of a fixed mass of gas is inversely proportional to the pressure of the gas provided temperature is kept constant.

Mathematically, Boyle's law can be explained as: PV = k,

where P is pressure

V is volume, and

k is a constant.

So, increase in the pressure of a gas leads to decrease in its volume and vice versa.

3 0

3 years ago

Review Conceptual Example 6 as background for this problem. A car is traveling to the left, which is the negative direction. The

DiKsa [7]

Answer:

(a) 1.21 m/s² (b) 1.75 m/s²

Explanation:

The initial speed of the car, u = 17.8 m/s

Case 1.

Final speed of the car, v = 23.5 m/s

Time, t = 4.68-s

Acceleration = rate of change of velocity

$a=\dfrac{23.5 -17.8 }{4.68}\\\\a=1.21\ m/s^2$

Case 2.

Final speed of the car, v = 15.3 m/s

$a=\dfrac{23.5 -15.3}{4.68}\\\\a=1.75\ m/s^2$

Hence, this is the required solution.

3 0

2 years ago

A solid aluminum sphere of radius R has moment of inertia I about an axis through its center. What is the moment of inertia abou

frutty [35]

Answer:

I1 = 2/5 M1 R^2 for a sphere about its center

I2 = 2/5 M2 (2 R)^2 = 2/5 M2 R^ * 4 = 8/5 M2 R^2

Remember that M2 is greater than M1 by a factor 0f 2^3 = 8

Then I2 exceeds I1 by a factor of 32

6 0

2 years ago