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Soloha48 [4]
4 years ago
6

What is the smallest element?

Physics
1 answer:
kakasveta [241]4 years ago
6 0

Answer:

Helium is the smallest element.

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Which trait is determined entirely by heredity ?
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Shape of the nose is entirely hereditary, as genes have nothing to do with any of the other attributes.
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The density of water is 1.00 g/cm3. What is its density in kg/m3?
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1 g = 1 ÷ 1000 kg
= 0.001 kg

1 cm³ = 1 ÷ 100 ÷ 100 ÷ 100 m³
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What part of a thunderstorm kills the most people each year?
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The swim bladder of a fish helps keep the fish from sinking by_______.
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An apparatus similar to the one used in lab uses an oscillating motor at one end to vibrate a long rope with frequency f = 40 Hz
Mice21 [21]

Answer:

The displacement in t = 0,  

y (0) = - 0.18 m

Explanation:

Given f = 40 Hz , A = 0.25m , μ = 0.02 kg / m, T = 20.48 N

v = √ T / μ

v = √20.48 N / 0.02 kg /m = 32 m/s

λ = v / f

λ = 32 m/s / 40 Hz = 0.8

K = 2 π / λ

K = 2π / 0.8 = 7.854

φ = X * 360 / λ

φ = 0.5 * 360 / 0.8 = 225 °

Using the model of y' displacement

y (t) = A* sin ( w * t - φ )

When t = 0

y (0) = 0.25 m *sin ( w*(0) - 225 )

y (0) = 0.25 * -0.707

y (0) = - 0.18 m

5 0
4 years ago
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