An area where the particles in a medium are spaced close together is called a _____.

Physics

2 answers:

alina1380 [7]2 years ago

4 0

Answer : Compression

Explanation :

An area where the particles in a medium are spaced close together is called a compression. In this region the particles are very close to each other.

In the attached figure, the rarefaction and compression is shown very clearly. In rarefaction, the particles of medium are very far apart form each other.

The distance between two consecutive compression and rarefaction is called the wavelength of wave.

So, the compression is the area where the particles are close to each other.

Ksju [112]2 years ago

3 0

An area where the particles in a medium are spaced close together is called compression.

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A 98-kg fullback is running along at 8.6 m / s when a 76-kg defensive back running in the same direction at 9.8 m / s jumps on h

algol13

The total momentum before and after the collision must be conserved.

The total momentum before the collision is:
$p_i = m_1 v_1 + m_2 v_2$
where m1 and m2 are the masses of the two players, and $v_1$ and $v_2$ their initial velocities. Both are considered with positive sign, because the two players are running toward the same direction.

The final momentum is instead
$p_f = (m_1+m_2)v_f$
because now the two players are moving together with a total mass of (m1+m2) and final speed vf.

By requiring that the momentum is conserved
$p_i=p_f$
we can calculate vf, the post-collision speed:
$m_1 v_1 + m_2 v_2 = (m_1+m_2)v_f$
$v_f = \frac{m_1 v_1 + m_2 v_2}{m_1 +m_2}= \frac{(98 kg)(8.6 m/s)+(76 kg)(9.8m/s)}{98 kg+76 kg}=9.1 m/s$
and the direction is the same as the direction of the players before the collision.

6 0

2 years ago

Science assessment help pls

DENIUS [597]

Answer:

Work Done = W

force = F

Distance = d

W = Fd

or W = F*d

W (in joules) = 3.5*4 = 14 Nm (or J)

1Nm = 1J