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3 years ago

What is the resultant of 5N force pointing north and 7N force pointing south? Do not forget include direction

Physics

1 answer:

balandron [24]3 years ago

4 0

Given forceF

=5N and F

=7N and θ=60

We know resultant force F=

+2(5)(7)cos60

25+49+35

109

it's your answer

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Say I have a series circuit with 20v and four 65 ohm resistors, what is the current in each resistor?

Komok [63]

Data:

$E = 20 V$
$R_{1} = 65\Omega$
$R_{2} = 65\Omega$
$R_{3} = 65\Omega$
$R_{4} = 65\Omega$

Now that we have all the values we need properly identified, simply calculate the equivalent total resistance of the circuit and the intensity of the total electric current using the Ohm's Law:

 $R_{T} = R_{1} + R_{2} + R_{3} + R_{4}$
$R_{T} = 65 + 65 + 65+ 65$
$R_{T} = 260\Omega$

Like this:

$I_{T} = \frac{E}{ R_{T} }$

$I_{T} = \frac{20}{ 260 }$
$I_{T} = 0,076923076...$

$\boxed{\boxed{I_{T} \approx 0,07A}}$
Answer:
The intensity of the total electric current
 $\boxed{\boxed{I_{T} \approx 0,07A}}$

P.S:. Since the association is in series, the current of 0.07A is the same for all resistors.

4 0

3 years ago

What is the wavelength of a sound wave with a speed of 331 m/s and a frequency of 500 Hz?

ludmilkaskok [199]

Answer:

0.777m

Explanation:

The sound wave has a wavelength of 0.773m.

Explanation:

To solve this problem we have to use the wave equation that is given below:

We know the frequency and the velocity, both of which have good units. All we have to do is rearrange the equation and solve for

λ :

λ = v f

Let's plug in our given values and see what we get!

λ = 340 m s

440 s − 1

λ = 0.773 m

Hope this helps, Mark as brainliest if u want

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3 years ago

How does wavelength change as frequency increases? A) Wavelength increases as frequency increases. B) Wavelength decreases as fr

ValentinkaMS [17]

Wavelength decreases as frequency increases

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3 years ago

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To calculate the change in kinetic energy, you must know the force as a function of _______. the work done by the force causes t

trapecia [35]

Kinetic energy is a result of mass in motion at a certain velocity.
1 Joule = 1 kg • (m/s)2
the force as a function of mass of the object.

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3 years ago

Let's return to our friend the sphere, with surface charge density σ(θ, f) = σ0sinθcos2f . Find the net polarization of this sph

pochemuha

Answer:

Explanation:

solution solved below

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3 years ago