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horsena [70]
3 years ago
14

A LOT OF POINTS! In your own words, compare and contrast transverse and longitudinal waves. Be sure to include at least one simi

larity and one difference
Physics
1 answer:
tatiyna3 years ago
5 0
Transverse Waves: Displacement of the medium is perpendicular to the direction of propagation of the wave.

To understand this it is good to think of a rope being held still by person B and being moved up and down by person A. The direction of propagation is from person A to B, so you will see the waves move along this way. But the displacement will be up and down.

Can travel in solids, but not in liquids and gas.

eg. Electromagnetic radiation

Longitudinal Waves: Displacement of the medium is parallel to the direction of propagation of the wave.

A good example for this is a slinky being pushed along the table, the propagation will be along the table and so will the displacement of all the 'rings'.

Can travel through all states of matter.

eg. Sound waves
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2 years ago
Leoni is participating in four drawing competitions. If the probability of her losing any
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Answer:

(a) Probability = 0.7599

(b) Probability = 0.2646

Explanation:

Represent losing with L and winning with W.

So:

L = 0.7 --- Given

n = 4

Probability of winning would be:

W = 1 - L

W = 1 - 0.7

W = 0.3

The question illustrates binomial probability and will be solved using the following binomial expansion;

(L + W)^4 = L^4 + 4L^3W + 6L^2W^2 + 4LW^3 + W^4

So:

Solving (a): Winning at least 1

We look at the above and we list out the terms where the powers of W is at least 1; i.e., 1,2,3 and 4

So, we have:

Probability = 4L^3W + 6L^2W^2 + 4LW^3 + W^4

Substitute value for W and L

Probability = 4 * 0.7^3*0.3 + 6*0.7^2*0.3^2 + 4*0.7*0.3^3 + 0.3^4

Probability = 0.7599

<em>Hence, the probability of her winning at least one is 0.7599</em>

Solving (a): Wining exactly 2

We look at the above and we list out the terms where the powers of W is exactly 2

So, we have:

Probability = 6L^2W^2

Substitute value for W and L

Probability = 6*0.7^2*0.3^2

Probability = 0.2646

<em>Hence, the probability of her winning exactly two is 0.2646</em>

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The amount of matter in an object is called
nalin [4]
The amount of matter in an object is called Mass.
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