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3 years ago

What sedimentary rock is Mixture of sizes, pebble to clay

1 answer:

6 0

<span>In that case, sedimentary rocks are derived rocks because they are formed from fragments of ... So the largest sediments (boulders, cobbles, and pebbles) which survive the weathering ... Rock formed fromclay-size particles are called shale.</span><span>
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You know that you sound better when you sing in the shower. This has to do with the amplification of frequencies that correspond

Elena L [17]

Answer:

Explanation:

For first overtone

Standing waves will be formed lengthwise and breadth-wise in the enclosures having dimension of .75m x 1.5 m

A ) For the formation of lowest two frequencies formed by standing waves along the breadth , fundamental note and first overtone may be considered.

For fundamental note ,

the condition is

wave length λ = 2L = 2 x 0.75 m

λ = 1.5 m

frequency n = v / λ

= 343 / 1.5

= 229 Hz approx

For first overtone

λ = L = 0.75m

frequency n = v / λ

n = 343 / 0.75

= 457 Hz approx

For the formation of lowest two frequencies formed by standing waves along the length , fundamental note and first overtone may be considered.

For fundamental note ,

the condition is

wave length λ = 2L = 2 x 1.5 m

λ = 3 m

frequency n = v / λ

= 343 / 3

= 114 Hz approx

frequency n = v / λ

n = 343 / 1.5

= 229 Hz approx

3 0

3 years ago

A Hooke's law spring is mounted horizontally over a frictionless surface. The spring is then compressed a distance d and is used

zloy xaker [14]

Answer:

The compression is $\sqrt{2} \ d$ .

Explanation:

A Hooke's law spring compressed has a potential energy

$E_{potential} = \frac{1}{2} k (\Delta x)^2$

where k is the spring constant and $\Delta x$ the distance to the equilibrium position.

A mass m moving at speed v has a kinetic energy

$E_{kinetic} = \frac{1}{2} m v^2$ .

So, in the first part of the problem, the spring is compressed a distance d, and then launch the mass at velocity $v_1$ . Knowing that the energy is constant.

$\frac{1}{2} m v_1^2 = \frac{1}{2} k d^2$

If we want to double the kinetic energy, then, the knew kinetic energy for a obtained by compressing the spring a distance D, implies:

$2 * (\frac{1}{2} m v_1^2) = \frac{1}{2} k D^2$

But, in the left side we can use the previous equation to obtain:

$2 * (\frac{1}{2} k d^2) = \frac{1}{2} k D^2$

$D^2 = \frac{2 \ (\frac{1}{2} k d^2)}{\frac{1}{2} k}$

$D^2 = 2 \ d^2$

$D = \sqrt{2 \ d^2}$

$D = \sqrt{2} \ d$

And this is the compression we are looking for

3 0

3 years ago

Read 2 more answers

The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first spring, whereas a 4.5 n blo

Naya [18.7K]

<Continuation of the question>

(a) the spring constant (in N/m) and

(b) the weight of the block hanging from the third spring.

the distance for the first spring is 20cm, the second 35cm, the third 50cm.

Answer:

a) To find the spring constant, we'll use the formula

F=kx, if we make k the subject we'll get

k=F/x, where F=4.5N, x = 35cm - 20cm = 15cm = 0.15m

k=F/x = 4.5N/0.15m = 30N/m is the Answer

b) to find the weight of block hanging on third spring

we use the formula F=kx

where k = 30N/m, x=50cm-20cm=30cm=0.30m

F=kx = (30N/m)*(0.30m) = 9N is the Answer

4 0

3 years ago

A hammer is dropped from the roof of a building 1000 meters tall. How long will it

ipn [44]

Answer:

Explanation:

Let's use the kinematic equation

s = ut + ½at²

Where

s = distance fallen

u = initial velocity

t = time taken

a = acceleration

Here the hammer is dropped so a = g = gravitational acceleration

u = 0 because the hammer is dropped.

So by substituting you get,

1000 = 0 + ½×10×t²

t² = 200

t = 14.14 s

5 0

3 years ago

A periodic wave travels from one medium to another. which pair of variables are likely to change in the process?

Sav [38]

velocity and wavelength are likely to change in the process

When a wave travels from one medium to another it undergoes a change in direction and this is referred to as refraction.

Refraction is the bending of a wave or a change in direction of a wave as it travels from one medium to another. Refraction is accompanied by change in velocity and wavelength of a wave

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3 0

2 years ago