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raketka [301]
3 years ago
7

True or False: For a longitudinal wave, the wavelength is the distance between compressions.

Physics
1 answer:
Schach [20]3 years ago
5 0

Answer:

false....

Explanation:

brainliest

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By newton third law of motion, we know that if a rocket ship pushes down on the ground, the ground will push back up on the rock
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We don't know that at all. The 3rd law says that the REaction is opposite and EQUAL to the action.  We don't know where that "twice as much" comes from.

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What determines the period of a pendulum?
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The length of the string must vary, while the angle and acceleration are constant

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What is the molar mass of an ideal gas if a 0.800 g sample of this gas occupies a volume of 200. mL at 50.0 oC and 720. mm Hg?
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PV=nRT
(720/760)(0.200)=(0.800/x)(0.08206)(323.15)
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7 0
3 years ago
A spring hangs from the ceiling with an unstretched length of x 0 = 0.35 m . A m 1 = 6.3 kg block is hung from the spring, causi
Jlenok [28]

Answer:

x₂=0.44m

Explanation:

First, we calculate the length the spring is stretch when the first block is hung from it:

\Delta x_1=0.50m-0.35m=0.15m

Now, since the stretched spring is in equilibrium, we have that the spring restoring force must be equal to the weight of the block:

k\Delta x_1=m_1g

Solving for the spring constant k, we get:

k=\frac{m_1g}{\Delta x_1}\\\\k=\frac{(6.3kg)(9.8m/s^{2})}{0.15m}=410\frac{N}{m}

Next, we use the same relationship, but for the second block, to find the value of the stretched length:

k\Delta x_2=m_2g\\\\\Delta x_2=\frac{m_2g}{k}\\\\\implies \Delta x_2=\frac{(3.7kg)(9.8m/s^{2})}{410N/m}=0.088m

Finally, we sum this to the unstretched length to obtain the length of the spring:

x_2=0.35m+0.088m=0.44m

In words, the length of the spring when the second block is hung from it, is 0.44m.

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A woman is reported to have fallen 144 ft from the 17th floor of a building, landing on a metal ventilator box that she crushed
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Answer:

Okay uh gimme some time though

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