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3 years ago

Circle the letter of each factor that determines whether a molecule

Physics

1 answer:

Iteru [2.4K]3 years ago

6 0

I believe the answer is C
Hope this helps you

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If y = 0.02 sin (30x – 200t) (SI units), the frequency of the wave is

leva [86]

Answer:

31.831 Hz.

Explanation:

Given:

$\rm y = 0.02\sin(30x-200 t).$

The vertical displacement of a wave is given in generalized form as

$\rm y = A\sin(kx -\omega t).$

where,

A = amplitude of the displacement of the wave.
k = wave number of the wave = $\dfrac{2\pi }{\lambda}.$
$\lambda$ = wavelength of the wave.
x = horizontal displacement of the wave.
$\omega$ = angular frequency of the wave = $\rm 2\pi f$ .
f = frequency of the wave.
t = time at which the displacement is calculated.

On comparing the generalized equation with the given equation of the displacement of the wave, we get,

$\rm A=0.02.\\k=30.\\\omega =200.\\$

therefore,

$\rm 2\pi f=200\\\\\Rightarrow f = \dfrac{200}{2\pi}=31.831\ Hz.$

It is the required frequency of the wave.

3 0

3 years ago

How do scientists know the true environmental lapse rate in a column of air?

stepan [7]

With weather ballons carry instruments to measure the temperature ,pressure,wind direction and wind speed

3 0

4 years ago

Two nuclear reactors provide 3200 MW of power.If the transmission system loses 5.1% of the energy produced,how much power from t

Annette [7]

The power that the customers receive is 163.2 MW

Explanation:

The efficiency of a system is given by

$\eta = \frac{P_{out}}{P_{in}}$

where

$P_{out}$ is the power in output

$P_{in}$ is the power in input

For the nuclear reactors in this problem, we have:

$P_{in} = 3200 MW$ (power generated by the reactors)

$\eta=0.051$ (efficiency is 5.1%)

Therefore, the power that reaches the customers is:

$P_{out} = \eta P_{in} = (0.051)(3200)=163.2 MW$

Learn more about power:

brainly.com/question/7956557

#LearnwithBrainly

6 0

3 years ago

Technician A says when diagnosing an overheating hydraulic system, be sure that the oil cooler is not plugged and the cooler’s f

mel-nik [20]

Answer:

Tech B is correct and Tech A is incorrect.

Explanation:

Here Tech A is wrong because when diagnosing an overheating hydraulic system, it is not necessary to un plugg the oil cooler rather it should be plugged to for proper diagnosis.

Technician B says running the hydraulic system at a lower operating temperature will reduce the possibly of oil oxidation is correct statement because at temperature oil's physical as well as chemical property tend to change.

Hence, Tech B is correct and Tech A is incorrect.

8 0

3 years ago

What is the mass of the sun?

4vir4ik [10]

Mass of the Sun = 1.989 × 10^30 kg

Hope this helps!

5 0

3 years ago