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4 years ago

Radar use reflected microwaves to detect objects and measure their... what?

Physics

1 answer:

Sloan [31]4 years ago

7 0

Height and depth..... for sure....

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Help me with this problem please? c:

deff fn [24]

30*3*60=5400
300*2=600
1500*3=4500
200*10*60=120000

the computer uses more energy.
(you can multiply all results by 60 to get the energy in J, but it's not necessary for the comparison)

5 0

3 years ago

You illuminate a slit with a width of 77.7 μm with a light of wavelength 721 nm and observe the resulting diffraction pattern on

SVETLANKA909090 [29]

Answer:

The width is $Z = 0.0424 \ m$

Explanation:

From the question we are told that

The width of the slit is $d = 77.7 \mu m = 77.7 *10^{-6} \ m$

The wavelength of the light is $\lambda = 721 \ nm$

The position of the screen is $D = 2.83 \ m$

Generally angle at which the first minimum of the interference pattern the light occurs is mathematically represented as

$\theta = sin ^{-1}[\frac{m \lambda}{d} ]$

Where m which is the order of the interference is 1

substituting values

$\theta = sin ^{-1}[\frac{1 *721*10^{-9}}{ 77.7*10^{-6}} ]$

$\theta = 0.5317 ^o$

Now the width of first minimum of the interference pattern is mathematically evaluated as

$Y = D sin \theta$

substituting values

$Y = 2.283 * sin (0.5317)$

$Y = 0.02 12 \ m$

Now the width of the pattern's central maximum is mathematically evaluated as

$Z = 2 * Y$

substituting values

$Z = 2 * 0.0212$

$Z = 0.0424 \ m$

3 0

4 years ago

A certain tuning fork vibrates at a frequency of 215 Hz while each tip of its two prongs has an amplitude of 0.832 mm. (a) What

Marysya12 [62]

Explanation:

It is given that,

Frequency of vibration, f = 215 Hz

Amplitude, A = 0.832 mm

(a) Let T is the period of this motion. It is given by the following relation as :

$T=\dfrac{1}{f}$

$T=\dfrac{1}{215}$

$T=4.65\times 10^{-3}\ s$

(b) Speed of sound in air, v = 343 m/s

It can be given by :

$v=f\times \lambda$

$\lambda=\dfrac{v}{f}$

$\lambda=\dfrac{343\ m/s}{215\ Hz}$

$\lambda=1.59\ m$

Hence, this is the required solution.

5 0

4 years ago

If forces acting on an object are unbalanced, which factor may result from an unbalanced force

yan [13]

Answer:

Apply Newton's Second Law:

The acceleration of the object is proportional to the applied force.

4 0

3 years ago

Which statement is correct based on the data provided?

Ksivusya [100]

Answer:

I think D. Since a vacuum iswhere gravity is concentrated. not sure

3 0

3 years ago