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Elodia [21]
3 years ago
10

Does sound travel much faster than light ?

Physics
1 answer:
Kitty [74]3 years ago
4 0

Answer:

nothing travels faster than light

Example:

You’ll always see lightning before you hear it, because typically lightning will be a mile away, two miles away.

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An airplane flies at a speed of 250 mi/hr, 40 degrees south of east. A wind blows at a speed of 35 mi/hr 30 degrees west of sout
alina1380 [7]

Compute the components of the given vectors. Let P denote the plane's velocity vector, and W the wind. Then

P=\langle P_x,P_y\rangle=\langle250\cos(-40^\circ),250\sin(-40^\circ)\rangle

\implies P=\langle191.5,-160.7\rangle

W=\langle35\cos(-120^\circ),35\sin(-120^\circ)\rangle=\langle-17.5,-30.3\rangle

The resultant velocity (rounded) is

P+W=\langle174,-191\rangle

with magnitude \sqrt{174^2+(-191)^2}=258 and direction \tan^{-1}\frac{-191}{174}=-47.7^\circ, or about 258 mi/hr at 47.7 degrees south of east.

3 0
3 years ago
A spring of force constant 285.0 N/m and unstretched length 0.230 m is stretched by two forces, pulling in opposite directions a
Kaylis [27]

Answer: W = 0.3853 J, e = 0.052 m

Explanation: Given that,

K =285.0N/M , L = 0.230m , F = 15N , e = ?

F = Ke

15 = 285 × e

e = 15÷ 285

e =0.052 m

e + L = 0.052 + 0.230

= 0.282m ( spring new length )

Work needed to stretch the spring

W = 1/2ke2

W = 1/2 × 285 x 0.052 × 0.052

W = 0.3853 J

8 0
3 years ago
A boat was traveling at 15 mph when a passenger threw an object at 10 mph in the same direction the boat was moving. A friend,
Slav-nsk [51]

Answer:

the person on the boat is moving 15mph on the boat and throws the ball 10mph. you add that together its 25mph. the other person is standing on land so their  is no extra speed.

Explanation:

its common

3 0
3 years ago
What is the number of the lowest energy level that contains an f sublevel?. . 3. . 4. . 5. . 6
DENIUS [597]
The correct answer among all the other choices is 4. This is the number of the lowest energy level that contains an f sublevel. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help. 
7 0
3 years ago
Dianne's teacher has a chunk of dry ice for the class to look at. Dry ice is a kind of frozen gas—it is very cold. The teacher w
Gelneren [198K]
The answer is A. Hope this helps you with your work.
4 0
3 years ago
Read 2 more answers
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