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2 years ago

Which of the following is true?

2 answers:

6 0

<h2>Answer</h2><h2> a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency</h2><h2>Explanation:</h2><h2>if that was what u were looking for</h2>

White raven [17]2 years ago

5 0

Answer:

Both A and B

Explanation:

A longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency.

Have a great rest of your day
#TheWizzer

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Describe where each subatomic particle is found in an atom.

Anestetic [448]

Answer:

In the nucleus

Explanation:

You find it in the nucleus. This is where protons and neutrons are. Don't forget the quarks as well ;)

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3 years ago

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A long, straight, horizontal wire carries a left-to-right current of 40 A. If the wire is placed in a uniform magnetic field of

sladkih [1.3K]

Answer:

The magnitude of the resultant of the magnetic field is $4.11\times10^{-5}\ T$

Explanation:

Given that,

Current = 40 A

Magnetic field $B=3.7\times10^{-5}\ T$

Distance = 22 cm

We need to calculate the magnetic field

Using formula of magnetic field

$B'=\dfrac{\mu_{0}I}{2\pi r}$

Where, r = distance

I = current

Put the value into the formula

$B'=\dfrac{4\pi\times10^{-7}\times20}{2\pi\times0.22}$

$B'=1.8\times10^{-5}\ T$

We need to calculate the magnitude of the resultant of the magnetic field

Using formula of resultant

$B''=\sqrt{B^2+B'^2}$

Put the value into the formula

$B''=\sqrt{(3.7\times10^{-5})^2+(1.8\times10^{-5})^2}$

$B''=4.11\times10^{-5}\ T$

Hence, The magnitude of the resultant of the magnetic field is $4.11\times10^{-5}\ T$

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3 years ago

By increasing the circuits resistance R, in a capacitive circuit the phase difference between the current in the circuit and pot

oksian1 [2.3K]

Answer:

B) Gets smaller

Explanation:

The difference of phase between current and voltage in a AC circuit is the phase angle and it depends on the value of Z ( circuit impedance)

Z = R + X where R is the resistive component and X the reactance component, which is due either to a presence of an inductor or a capacitor. In any case the total impedance depends on R the resistive, and the phase angle φ is:

tan⁻¹ φ = X/R

Have a look to a pure capactive circuit (we are talking about AC current) in this case current leads voltage by 90⁰. If we add a resistor in the circuit the current still will lead a voltage but in this condition the phase angle will be smaller,

If R increase, X/R decrease and tan⁻¹ φ also decrease

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3 years ago

Chemical energy is the stored form of chemical bonds containing combinations of which elements? Select THREE (3) elements. *

riadik2000 [5.3K]

Carbon hydrogen oxygen

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3 years ago

If the work done to stretch an ideal spring by 4.0 cm is 6.0J, what is the spring constant (force constant) of this spring?

cluponka [151]

As AL2006 correctly pointed out the formula is 1/2 kx^2. I was thinking of force and work is the integral of force over the distance applied. So now
$W= \frac{1}{2}k x^{2}$
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$\frac{2*6.0}{0.04^{2} } = k =7500 \frac{J}{m^{2}}$

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3 years ago

Read 2 more answers