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olya-2409 [2.1K]

3 years ago

15

What is the state of matter that consists of a gas-like mixture of free electrons and nucle of atoms that have been stripped of

electrons

1 answer:

monitta3 years ago

5 0

I think the answer is plasma which is a fourth state of matter.

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Claire just purchased a new silk dress for her school’s winter formal. She loves the feel of silk and keeps rubbing it with her

bezimeni [28]

Answer:

C.

would adapt if the dress were held completely still

Explanation:

3 0

3 years ago

Read 2 more answers

What is the velocity of a wave that has a wavelength of 20 meters and frequency of 0.5<br> Hz?

k0ka [10]

Answer:

v = 10 m/s

Explanation:

recall that velocity is related to wavelength and frequency by the formula

v = fλ

where v = velocity, f = frequency and λ= wavelength

Simply substitute these into the formula:

v = fλ

v = (0.5)(20)

v = 10 m/s

3 0

3 years ago

Read 2 more answers

A 2.4 kg block is dropped onto a spring and platform of negligible mass. The block is released

statuscvo [17]

The speed of the block when the compression is 15 cm is 9.85 m/s.

The given parameters;

<em>mass of the block, m = 2.4 kg</em>
<em>height of the block, h = 5 m</em>
<em>compression of the spring, x = 25 cm = 0.25 m</em>

The spring constant is calculated as follows;

$F = kx\\\\mg = kx\\\\k = \frac{mg}{x} \\\\k = \frac{2.4 \times 9.8}{0.25} \\\\k = 94.08 \ N/m$

The speed of the block when the compression is 15 cm can be determined by applying the principle of conservation of energy;

$\Delta K.E = \Delta P.E\\\\\frac{1}{2} m(v^2 - v_{0 }^2 ) = mgh - \frac{1}{2} kx^2\\\\\frac{1}{2} mv^2 = mgh - \frac{1}{2} kx^2\\\\mv^2 = 2mgh - kx^2\\\\v^2 = \frac{2mgh - kx^2}{m} \\\\v = \sqrt{\frac{2mgh - kx^2}{m}} \\\\v = \sqrt{\frac{(2 \times 2.4 \times 9.8 \times 5) - (94.08 \times 0.15^2)}{2.4}} \\\\v = 9.85 \ m/s$

Thus, the speed of the block when the compression is 15 cm is 9.85 m/s.

Learn more here:brainly.com/question/14289286

8 0

3 years ago

Which kind of mechanical wave needs a source of energy to produce it?

Over [174]

I think the answer would be T<span>ransverse, Longitudinal, & Surface waves.

</span>

6 0

3 years ago

Read 2 more answers

A car accelerates from rest to a speed 20 m/s in 12 s. Find the distance the car travels this time

Andrew [12]

The first thing we need to do is figure out what equation to use. We will use the following kinematic equation...

Δx = (final velocity + initial velocity) x time / 2

We know that the car accelerates from rest, so initial velocity = 0 m/s
We also know final velocity = 20 m/s and time = 12s

Now we just need to plug everything in.

Δx = (20 x 12)/2 = 120 meters

6 0

3 years ago