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Phantasy [73]
3 years ago
7

Which characteristic is common to all permanent magnets?

Physics
2 answers:
maw [93]3 years ago
6 0

option 3 is the one because my teacher told this to one of my classmate when she asked this question

yanalaym [24]3 years ago
3 0

I can't eliminate answers. Some of them are just wrong.  A is incorrect. There is no such thing as a 1 pole magnet.

I wouldn't use B. If it is just a bar it is not a magnet.

C is the traditional answer

D is a space filler. It is just there to occupy a letter.

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I'm solving for the angle on a right triangle the hypotenuse is 36 and the base is 24 I don't understand how or when to use cos
Alika [10]

Given

hypotenuse is 36

base is 24

Procedure

Cos function (or cosine function) in a triangle is the ratio of the adjacent side to that of the hypotenuse. The cosine function is one of the three main primary trigonometric functions and it is itself the complement of sine(co+sine).

\begin{gathered} \cos \theta=\frac{24}{36} \\ \theta=\cos ^{-1}(\frac{24}{36}) \\ \theta=48.1 \end{gathered}

The answer would be 48 degrees

4 0
1 year ago
I need help please. Quick.
Nezavi [6.7K]

Answer:

look on google i had to do the same thing i look in google

Explanation:

8 0
3 years ago
IS IT B!! if not pls helpp!
natita [175]

Answer:

I believe you are correct but we just started this unit

Explanation:

6 0
3 years ago
On an icy road, a 1100 kg car moving at 55 km/h strikes a 480 kg truck moving in the same direction at 37 km/h . The pair is soo
statuscvo [17]

Answer:

Speed of the wreckage = 49.29 km/hr

Explanation:

This question is solved simply by using the conservation of momentum law.

The momentum of the three moving bodies are calculated below:

Momentum of Car 1 : 1100 * 55 = 60500 kg.km/hr

Momentum of Truck : 480 * 37 = 17760 kg.km/hr

Momentum of Car 2 : 1300 * 49 = 63700 kg.km/hr

Total mass of all three vehicles: 1100 + 480 + 1300 = 2880 kg

The final momentum equals the initial momentum if it is conserved. Thus we have the following equation:

Final Momentum = Initial Momentum

Final Velocity * Total mass = Momentum of all three vehicles combined

Final Velocity * 2880 = 60500 + 17760 + 63700

Final Velocity = 49.29 km/hr

7 0
4 years ago
Read 2 more answers
Why is rock away from ocean ridges older? Is it because if the rocks are away from cracks in the crust, there is no way for any
andreyandreev [35.5K]

Answer:

the rocks are away from cracks in the crust

Explanation:

   The new crust is pushed away from the Ocean Ridge in both directions as newer crust is formed. This is called sea floor spreading. The crust that makes up the sea floor starts to have time to accumulate a layer of sediments as it gets older and moves away from the Ocean Ridge.

6 0
2 years ago
Read 2 more answers
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