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2 years ago

Of the following properties of a wave, which of the following is independent of the others? amplitude speed wavelength frequency

Physics

2 answers:

rjkz [21]2 years ago

8 0

Answer

Correct answer is amplitude

Explanation:

Frequency: frequency is the number of complete waves which passes through a point in one second. SI unit of frequency is Hertz (Hz). Frequency depends on Wavelength. Frequency is inversely proportional to wavelength. It means if wavelength of wave is higher, then its frequency will be shorter.

Wavelength: wavelength is the distance between adjacent crests. SI unit of wavelength is meters. Wavelength depends on frequency. Wavelength is inversely proportional to frequency, it means if frequency of wave is higher, then its wavelength will be shorter.

Speed : Speed of wave is defined as the speed with which a wave propagate in a medium or vacuum. SI unit of speed is m/s. Wave speed depends on wavelength and frequency by following equation

$speed=frequency\times wavelength$

Amplitude: Amplitude is the height of the wave. SI unit of amplitude is meter. Amplitude is independent of frequency, wavelength and speed. So it is correct answer

MakcuM [25]2 years ago

7 0

Answer:

Amplitude

Explanation:

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What is the single most important factor that determines why Earth (or almost any planet in the Solar System) experiences season

kirill [66]

Answer:

Planetary seasons are caused by two factors:

1. axial tilt and

2. variable distance from the sun

Explanation:

Earth's orbit is nearly circular and so has little effect on climate. It's our planet's axial tilt that causes almost all seasonal changes.

You can read further; Planetary seasons

6 0

2 years ago

A simple series circuit consists of a 120 Ω resistor, a 21.0 V battery, a switch, and a 3.50 pF parallel-plate capacitor (initia

slega [8]

Answer

Integral EdA = Q/εo =C*Vc(t)/εo = 3.5e-12*21/εo = 4.74 V∙m <----- A)

Vc(t) = 21(1-e^-t/RC) because an uncharged capacitor is modeled as a short.

ic(t) = (21/120)e^-t/RC -----> ic(0) = 21/120 = 0.175A <----- B)

Q(0.5ns) = CVc(0.5ns) = 2e-12*21*(1-e^-t/RC) = 30.7pC

30.7pC/εo = 3.47 V∙m <----- C)

ic(0.5ns) = 29.7ma <----- D)

8 0

3 years ago

Describe what happens to radiant energy once it enters the atmosphere? How does Radiant energy cause weather?

Triss [41]

Once energy from the Sun gets to Earth, several things can happen to it:

Energy can be scattered or absorbed by aerosols in the atmosphere. Aerosols are dust, soot, sulfates and nitric oxides. When aerosols absorb energy, the atmosphere becomes warmer. When aerosols scatter energy, the atmosphere is cooled.
Short wavelengths are absorbed by ozone in the stratosphere.
Clouds may act to either reflect energy out to space or absorb energy, trapping it in the atmosphere.
The land and water at Earth's surface may act to either reflect energy or absorb it. Light colored surfaces are more likely to reflect sunlight, while dark surfaces typically absorb the energy, warming the planet.
Albedo is the percentage of the Sun's energy that is reflected back by a surface. Light colored surfaces like ice have a high albedo, while dark colored surfaces tend to have a lower albedo. The buildings and pavement in cities have such a low albedo that cities have been called "heat islands" because they absorb so much energy that they warm up.

6 0

3 years ago

The atomic radius of metal X is 1.20 × 102 picometers (pm) and a crystal of metal X has a unit cell that is face-centered cubic.

dmitriy555 [2]

The density of the metal can be determined through the formula [n*MW]/ Na*[a^3] . substituting, we get,

<span>d = [n*MW]/ Na*[a^3]
</span><span>d = [4 atoms*42.3 g/mol]/ [6.022 x 1023atoms/mol* (sqrt 8 *1.20x10-10)^3]
</span>d = 0.719 g/cm3

4 0

3 years ago

During normal beating, the heart creates a maximum 3.60 mV potential across 0.250 m of a person's chest, creating a 1.00 Hz elec

grandymaker [24]

Answer:

The maximum electric field strength is 0.0144 V/m.

Explanation:

Given that,

Electric potential created in the heart, V = 3.6 mV

Distance, d= 0.25 m

Frequency of the the electromagnetic wave, f = 1 Hz

We need to find the maximum electric field strength created. We know that the electric potential is given by :

$V=Ed$

E is the maximum electric field strength

$E=\dfrac{V}{d}\\\\E=\dfrac{3.6\times 10^{-3}\ V}{0.25\ m}\\\\E=0.0144\ V/m$

So, the maximum electric field strength is 0.0144 V/m. Hence, this is the required solution.

5 0

3 years ago