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Damm [24]
3 years ago
8

The Tri-Rail traveled a distance of 8,000 m at an

Physics
1 answer:
Anton [14]3 years ago
8 0

Answer:

Time taken = 444.4s

Explanation:

how long = the time taken

and from the definition of speed,we have that :

Average speed = distance ( m)

_____________

time (s)

therefore,Time = distance (m) / average speed (m/s)

Time = 8000/18

Time = 444.4 (s)

You might be interested in
Select the statement that correctly completes the description of phase difference.
KengaRu [80]

Answer:

The difference in the phase angle between any two waves at any given position along the waves.

Explanation:

Phase difference describes  the difference in the phase angle between any two waves at any given position along the waves. The equation of wave is given by :

Wave 1, y=A\ sin(\omega t)

Wave 2, y=A\ sin(\omega t+\phi)

Where

A is the amplitude of wave

\omega is the angular frequency

\phi is the phase difference between two waves

If \Delta d is the path difference, it is given by :

\Delta d=d\ sin\theta

Hence, the correct option is (a) "the difference in the phase angle between any two waves at any given position along the waves".

3 0
4 years ago
Monochromatic light is incident on a pair of slits that are separated by 0.240 mm. The screen is 2.80 m away from the slits. (As
Makovka662 [10]

Answer:

λ = 1.388 x 10⁻⁶ m = 1388 nm

Explanation:

We can use the Young's Double Slit experiment formula here to solve this numerical:

\Delta x = \frac{\lambda L}{d} \\\\\lambda = \frac{\Delta x d}{L}\\

where,

λ = wavelength = ?

Δx = distance between adjacent bright fringes = 1.62 cm = 0.0162 m

d = slit separation = 0.24 mm = 0.00024 m

L = distance from screen to slits = 2.8 m

Therefore,

\lambda = \frac{(0.0162\ m)(0.00024\ m)}{2.8\ m} \\

<u>λ = 1.388 x 10⁻⁶ m = 1388 nm</u>

6 0
3 years ago
The spaceship Enterprise 1 is moving directly away from earth at a velocity that an earth-based observer measures to be 0.62c. A
podryga [215]

Answer:

The answer is "0.92 c"

Explanation:

v_1\ (earth) = 0.62 \ c \\\\v_2\ ( enterprise ) = -0.30

so,

v_2 \ (earth) = 0.62 \ c - (-0.30 \ c)  \\\\

               =  0.62 \ c +0.30 \ c\\\\= 0.92 \  c

8 0
3 years ago
Two resistors with resistance values of 4.5 Ω and 2.3 Ω are connected in series or parallel
kenny6666 [7]

Explanation:

Given that,

Two resistors 4.5 Ω and 2.3 Ω .

Potential difference = 30 V

When they are in series, the current through each resistor remains the same. First find the equivalent resistance.

R' = 4.5 + 2.3

= 6.8 Ω

Current,

I=\dfrac{V}{R'}\\\\I=\dfrac{30}{6.8}\\\\=4.41\ A

So, the current through both lightbulb is the same i.e. 4.41 A.

When they are in parallel, the current divides.

Current flowing in 4.5 resistor,

I_1=\dfrac{V}{R_1}\\\\=\dfrac{30}{4.5}\\\\I_1=6.7\ A

Current flowing in 2.3 ohm resistor,

I_2=\dfrac{V}{R_2}\\\\=\dfrac{30}{2.3}\\\\I_2=13.04

In parallel combination, are brighter than bulbs in series.

5 0
3 years ago
What type of wave is infrared light
GrogVix [38]

Answer: Heat waves? I’m not %100 sure

4 0
3 years ago
Read 2 more answers
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