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Elena-2011 [213]
4 years ago
9

Which sound characteristic is not affected by the relative motion of an object?

Physics
2 answers:
Tatiana [17]4 years ago
6 0

Answer:

intensity is correct

Explanation:

irinina [24]4 years ago
4 0

intensity is the answer. i just got it on the test

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A 6.25-kg bowling ball moving at 8.95 m/s collides with a 0.95-kg bowling pin, which is scattered at an angle of θ = 27.5° from
Archy [21]

Answer:

-6.34 degrees.

Explanation:

Because this is a collision we can use the formula of linear momentum conservation.

m_1*v_{o1}+m_2*v_{o2}=m_1*v_{f1}+m_2*v_{f2}

The pin has an angle so it has two components of velocity, so:

v_x=V*cos(\theta)\hat{i}\\v_y=V*sin(\theta)\hat{j}\\\\v_x=11.6*cos(27.5^o)=(10.3m/s)\hat{i}\\v_y=11.6*sin(27.5^o)=(5.4m/s)\hat{j}

applying the first formula:

6.25kg*(8.95m/s)\hat{i}+0=6.25kg*v_{f}+0.95kg*(10.3m/s(\hat i)+5.4m/s(\hat j))\\\\v_f=\dfrac{6.25kg*(8.95m/s)\hat{i}-0.95kg*(10.3m/s(\hat i)+5.4m/s(\hat j))}{6.25kg}\\v_f=7.38m/s(\hat i)-0.82m/s(\hat j)

The angle is given by:

\theta_b=acrtg(\dfrac{v_f(\hat j)}{v_f(\hat i)})\\\\\theta_b=arctg(\frac{-0.82m/s}{7.38m/s})\\\theta_b=-6.34^o

the angle is -6.34 degrees.

4 0
3 years ago
Which of these talents is an HR employee MOST likely to need?
jarptica [38.1K]

Answer:

D

Explanation:

HR or human resources, is a division in a company which helps out with recruitment and other human related issues, some including counselling work so I would guess D

5 0
2 years ago
Two objects moving at the same speed can have different velocities. <br> True or False
Rom4ik [11]

Answer:

True

Explanation:

Objects have the same velocity only if they are moving at the same speed and in the same direction.

6 0
3 years ago
What are the characteristics of a magnetic force
fomenos

Answer:

Magnetic field lines never intersect each other.

They originates(from north pole) and terminates (to south pole) perpendicularly from/to the surface of magnet. Also magnetic field lines continues through the magnet.

Magnetic field is denser at the pole and becomes less dense as we move away from the poles.

Explanation:

8 0
3 years ago
A box moving to the right experiences four forces, as shown.
Free_Kalibri [48]

Answer:b

Explanation:g

3 0
3 years ago
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