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Kisachek [45]
3 years ago
13

Heat transfer occurs only in 1 case from body II to body I, 2. Heat transfer occurs only in 2 cases from body I to body II, 3. H

eat transfer occurs only in 3 cases from body II to body I, 4. Heat transfer occurs in all cases from body II to body I.
Physics
1 answer:
Sonja [21]3 years ago
6 0

Answer:

whats the question???

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14. A rocket is shot up into the air and then comes back down and hits the ground 9.2 second later.
sineoko [7]

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105.8 m

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Explanation:

From the time the rocket is launched to the time it reaches its maximum height:

v = 0 m/s

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t = 9.2 s / 2 = 4.6 s

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Δy = vt − ½ at²

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3 0
4 years ago
Coherent light that contains two wavelengths, 660 nm and 470 nm , passes through two narrow slits with a separation of 0.280 mm
bekas [8.4K]

Answer:

λ1 = 0.0129m = 1.29cm

λ2 = 0.00923m = 0.92 cm

Explanation:

To find the distance between the first order bright fringe and the central peak, can be calculated by using the following formula:

y_m=\frac{m\lambda D}{d}    (1)

m: order of the bright fringe = 1

λ: wavelength of the light = 660 nm, 470 nm

D: distance from the screen = 5.50 m

d: distance between slits = 0.280mm = 0.280 *10^⁻3 m

ym: height of the m-th fringe

You replace the values of the variables in the equation (1) for each wavelength:

For λ = 660 nm = 660*10^-9 m

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For λ = 470 nm = 470*10^-9 m

y_1=\frac{(1)(470*10^{-9}m)(5.50m)}{0.280*10^{-3}m}=0.00923m=0.92cm

7 0
3 years ago
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