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k0ka [10]
4 years ago
9

Terrorists carried out their attacks on September 11, 2001, by

Physics
1 answer:
dedylja [7]4 years ago
8 0
Im pretty sure its b hijacking planes

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Light of wavelength 550 nm falls on a
Brums [2.3K]

Answer:

The first diffraction maximum fringe will be at approximately 2.7 meters from the central maximum.

Explanation:

We can describe single slit diffraction phenomenon with the equation:

a\sin\theta=m\lambda (1)

with θ the angular position of the minimum of order m respect the central maximum, a the slit width and λ the wavelength of the incident light. Because the distances between the first minima and the central maximum (y_{m}) are small compared to the distance between the screen and the slit (x), we can approximate \sin\theta\approx\tan\theta=\frac{y}{x}, using this on (1):

a\frac{y_{m}}{x}=m\lambda

solving for y

y_{m}= \frac{mx\lambda}{a}

Note that y_{m}is the distance between a minimum and the central maximum but we need the position of a maximum not a minimum, here we can use the fact that a maximum is approximately between two minima, so the first diffraction maximum fringe is between the minima of order 1 and 2, so we should find y_{1}, y_{2} add them and divide by two:

y_{1}= \frac{(1)(10.0m)(550\times10^{-9}\,m)}{3.00\times10^{-6}\,m}

y_{1}= 1.8 m

y_{2}= \frac{(2)(10.0m)(550\times10^{-9}\,m)}{3.00\times10^{-6}\,m}

y_{1}= 3.6 m

maximum = \frac{1.8+3.6}{2}=2.7m

7 0
3 years ago
If 105 J of energy is used in 103 s, what is the average power consumption in watts?
jekas [21]
Power = work/time

P = 105J/103s

P = <span>1.019 watts</span>
4 0
3 years ago
Two students are sitting 1.50 m apart. One student has a mass of 70.0 kg and
Galina-37 [17]

Answer:

1.08x10⁻⁷

Explanation:

F=(GM₁M₂)/r²

=((6.67x10⁻¹¹)(70)(52))/(1.5²)

=2.42788x10⁻⁷/2.25

=1.07905778x10⁻⁷

≈1.08x10⁻⁷

3 0
3 years ago
A meter stick is located horizontally along the x-axis. The meter stick is moving with a velocity of 0.90c along the y-axis. To
Oxana [17]

Answer:

The length will be less than 1.0 meter.

Explanation:

By Enistien's theory of special relativity the length contraction is given by

L_{f}=L_o\sqrt{1-(\frac{v^{2}}{c^{2}})}

Applying the given values we get

L_{f}=1.0\times \sqrt{1-\frac{(0.9c)^{2}}{c^{2}}}\\\\\therefore L_{f}=1.0\times 0.435\\\\L_{f}=0.435meters

Thus the length is less than 1 meter

7 0
4 years ago
If your hood flies up while you are driving, you should steer:
Tems11 [23]
<span>you should immediately take your foot off the gas and slow down, turn on your emergency flashers and try to look "under the hood" to see where you are going. 

</span>
4 0
4 years ago
Read 2 more answers
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