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zepelin [54]
2 years ago
7

AN AIR CRAFT HEADS NORTH AT 320KM/H RELATIVE TO THE WIND THE WIND VELOCITY IS 80KM/HFROMNORTH .FIND THE VELOCITY OF THE AIR RELA

TIVE TO THE GROUND
Physics
1 answer:
makkiz [27]2 years ago
5 0

Answer:

Explanation:

See attached file for answer.

Download docx
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What is the kinetic energy of a 5 kg object moving at 4 m/s
mixas84 [53]

Answer:

40

Explanation:

rule: K.E = 1/2 m×v^2

1/2 × 5 × (4)^2= 40 joule

4 0
3 years ago
HELP ME PLEASE!
3241004551 [841]

they have zero momentum before pushing off, is at least true

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3 years ago
If a bag of pretzels says it contains 10 servings, and each serving is 150 calories, how many calories would you consume if you
Sindrei [870]

Answer:

5400

Explanation:

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3 years ago
Friction removes energy from objects in motion. Which statement best describes how this works?
xenn [34]

<em>friction transforms KE into thermal energy (a)</em>

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8 0
2 years ago
A scientist directs monochromatic light toward a single slit in an opaque barrier. The light has a wavelength of 580 nm and the
vredina [299]

Answer:

a) 9.72 mm

b) 4.86 mm

Explanation:

wave length of light  λ is  580 nm = 580 \times 10⁻⁹ m

Width of slit d = 0.215\times 10⁻³ m

Distance of screen D  = 1.8 m.

Width of one fringe = \frac{\lambda\times D}{d}

Putting the values we get fringe width

= \frac{580\times10^{-9}\times1.8}{.000315}

=4.86 mm.

a) Width of central maxima = 2 times width of one fringe

= 2 times 4.86

=9.72 mm

b) width of each fringe except central fringe  is same , no matter what the order is.Only brightness changes .

So width of either of the two first order bright fringe will be same and it will be  

= 4.86 mm.

3 0
3 years ago
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