2 years ago

Here is a picture showing how two magnets will stick to one another when opposite poles align. When these magnets are pulled

Physics

1 answer:

xxTIMURxx [149]2 years ago

7 0

Answer:

Explanation:

The others are only when the poles are the same as in south pole and south pole however north pole and south pole do connect cause they are oppisites

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A long ramp made of cast iron is sloped at a constant angle θ = 52.0∘ above the horizontal. Small blocks, each with mass 0.42 kg

dezoksy [38]

Answer:

For cast iron we have

$h = 0.92 m$

For copper

$h = 1.05 m$

For Lead

$h = 1.23 m$

For Zinc

$h = 2.43 m$

Explanation:

As we know that final speed of the block is calculated by work energy theorem

$W_f + W_g = \frac{1}{2}mv^2$

now we have

$-\mu_k mg cos\theta(\frac{h}{sin\theta}) + mgh = \frac{1}{2}mv^2$

now we have

$v^2 = 2gh - 2\mu_k g h cot\theta$

$v = \sqrt{2gh(1 - \mu_k cot\theta)}$

For cast iron we have

$4 = \sqrt{2(9.81)(h)(1 - 0.15cot52)}$

$h = 0.92 m$

For copper

$4 = \sqrt{2(9.81)(h)(1 - 0.29cot52)}$

$h = 1.05 m$

For Lead

$4 = \sqrt{2(9.81)(h)(1 - 0.43cot52)}$

$h = 1.23 m$

For Zinc

$4 = \sqrt{2(9.81)(h)(1 - 0.85cot52)}$

$h = 2.43 m$

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3 years ago

1. A man walks round a park, first walking north for 80m, then turning right and walking

drek231 [11]

Answer:

Total distance travelled = 210m

Explanation:

Distance travelled = 80m + 50m + 10m + 70m

= 210m

8 0

3 years ago

What is the polarization ice cap how long is yes

lubasha [3.4K]

Answer:

What???

Explanation:

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3 years ago

Which country was used for astronaut training due to its moonlike terrain?

serg [7]

Answer:

Húsavík, Iceland, with its volcanic landscape,

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2 years ago

Read 2 more answers

When a hot metal cylinder is dropped into a sample of water, the water molecules

Rashid [163]

Answer:

I believe the answer is speed up.

Explanation:

this is because when water heats up the molecules move father apart from each other they speed up, eventually causing the water to boll

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2 years ago