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aleksklad [387]
3 years ago
15

What color will a star be with a surface temperature of 5000 6000 K?

Physics
2 answers:
11Alexandr11 [23.1K]3 years ago
6 0
The color of a star would with that surface temperature would be White. Hope this helps. :)
____ [38]3 years ago
6 0

Answer:

The color of a star be with a surface temperature of 5000 6000 K is Yellow.

C is correct option.

Explanation:

According to Wien's displacement law,

The black body radiation will peak at different wavelength due to different temperature.

In mathematical form,

\lambda=\dfrac{2.89\times10^{-3}}{T}

The wavelengths are inversely proportional to the temperature.

According to stellar spectral types

The standard classes

Spectral classes -Temperature - color of stars

M < 3500 K - Red

K - 3500 - 5000 K - Yellow orange

G - 5000 - 6000 K - Yellow

F - 6000 -  7500 K - Yellow white

A - 7500 - 10000 K - white

B - 10000 - 30000 K - Blue white

O - 30000 - 60000 K - Blue

Hence, The color of a star be with a surface temperature of 5000 6000 K is Yellow.

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Suppose a car is traveling in the negative x-direction and comes to a stop. What is the sign of that car’s acceleration? How do
Oduvanchick [21]

We have equation of motion v = u + at

Where v = final velocity, u = initial velocity, a = acceleration, and t = time

In this case car is travelling in -x direction

Velocity of car = displacement / time

Since displacement value is increasing in negative x axis it's initial velocity is negative

And it's final velocity is zero since it comes to rest, and time is also positive

So, v= u+ at => 0 = -u + at

   So, a = u/t

Which is positive and along positive X - direction

7 0
4 years ago
What is the mathematical relationship between voltage (V), resistance (R), and current (I)? Express your answer as an equation:
Lemur [1.5K]
V=IR
I=V/R
R=V/I
these are the realations of voltage ,resistance , and current .
3 0
3 years ago
a student standing between two walls shouts once.he hears the first echo after 3 seconds and the next after 5 seconds. calculate
Karolina [17]

Explanation:

It took t_1 =1.5\:\text{s} for the sound to reach the 1st wall and at the same time time, the same sound took t_2 = 2.5\:\text{s} to reach the 2nd wall. Assuming that the sound travels at 343 m/s, then let x_1 be the distance of the person to the 1st wall and x_2 be the distance to the 2nd wall. So the distance between the walls X is

X = x_1 + x_2 = v_st_1 + v_st_2 = v_s(t_1 + t_2)

\:\:\:\:\:= (343\:\text{m/s})(4.0\:\text{s}) = 1372\:\text{m}

6 0
3 years ago
20.0 Ω resistor and a 2.50 μF capacitor are connected in parallel with signal generator. The signal generator produces a sinusoi
Free_Kalibri [48]

Answer:

0.15A

Explanation:

The parameters given are;

R=20.0 Ω

C= 2.50 μF

V= 3.00 V

f= 2.48×10^-3 Hz

Xc= 1/2πFc

Xc= 1/2×3.142 × 2.48×10^-3 × 2.5 ×10^-6

Xc= 25666824.1

Z= 1/√(1/R)^2 +(1/Xc)^2

Z= 1/√[(1/20)^2 +(1/25666824.1)^2]

Z= 1/√(2.5×10^-3) + (1.5×10^-15)

Z= 20 Ω

But

V=IZ

Where;

V= voltage

I= current

Z= impedance

I= V/Z

I= 3.00/20

I= 0.15A

6 0
3 years ago
A wire of length L is wound into a square coil with 167 turns and used in a generator that operates at 60.0 Hz and 120 V rms val
Mrac [35]

Answer:

171.43m

Explanation:

First, define emf( electromotive force )-is the unit electric charge imparted by an energy source. In this case the generator.

The peak emf is:

E_p_e_a_k=\sqrt2(E_m_a_x)=\sqrt(2\times 120V)=170V

Substituting w=2\pi f and the value for peaf E gives:

Total length=4\sqrt {\frac{NE_p_e_a_k}{Bw}=4\sqrt{\frac{167\times 170}{0.041T\times 2pi \times 60.0Hz}

=171.43m

Hence, wire's length is 171.43m

8 0
3 years ago
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