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storchak [24]
3 years ago
6

PLZ HURRY NEED HELP ASAP!!!!!!!!!!!!!!

Physics
1 answer:
Bezzdna [24]3 years ago
6 0

Answer: 1/R = 1/r1 + 1/r2 + 1/r3

Explanation:

Just did the test myself. Hope this helps!

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How is color related to wavelength?
daser333 [38]
Answer to d.
Color travels in waves which are loosely divided into into short medium and long in length. because color travel at different wavelengths some are easier to see than others but the amount of light is also a factor. in general however green is the most visible color from a distance.
answer to c.
No it depends on the time of day whether it is light or dark because clors stand out in different wavelenghts
answer to b.
yes that's absolutely true.
answer to a.
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5 0
3 years ago
An object, with mass 32 kg and speed 26 m/s relative to an observer, explodes into two pieces, one 5 times as massive as the oth
Brut [27]

Answer:

\Delta K = 2164.053\,J

Explanation:

Let consider the observer as an inertial reference frame. The object is modelled after the Principle of Momentum Conservation:

(32\,kg)\cdot (26\,\frac{m}{s} ) = (5.333\,kg)\cdot (0\,\frac{m}{s} )+(26.665\,kg )\cdot v

The speed of the more massive piece is:

v = 31.202\,\frac{m}{s}

The kinetic energy added to the system is:

\Delta K = \frac{1}{2}\cdot [(5.333\,kg)\cdot (0\,\frac{m}{s} )^{2}+(26.665\,kg )\cdot (31.202\,\frac{m}{s} )^{2}]-\frac{1}{2}\cdot (32\,kg)\cdot (26\,\frac{m}{s} )^{2}

\Delta K = 2164.053\,J

3 0
3 years ago
What piece of sports equipment is aerodynamic
Mashcka [7]
Aerobie.  Frisbee.  Discus.  Javelin.  I suppose an American football to some extent. 
<span>Pull!  Clay pigeons.  Arrows.  Wingsuit.  Kites.  Hang gliders.  Sails.  sailboat keels/dagger boards.  Water skis.  Ski jumping skis.  Boomerang.  </span>
<span>I'm excluding spheres and parachutes as bluff bodies even though aerodynamics often plays a big part in their motion.</span>
6 0
3 years ago
PLEWSE SOMEONE HELP ILL MARK BRAINLIST
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Answer:

D)

Explanation:

ffhjjxghjjcdddhhgfd

Brainliest pls ❤️

3 0
3 years ago
Read 2 more answers
A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the
Ne4ueva [31]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

t=(0-(250sin75)^2)/-9.8 
<span>the distance one is (2500+610)- (250m/s*cos75)*t=Dh Dh=horizontal distance </span>

<span>the max height one is d=0.5*9.8*t^2 </span>
<span>d= max height subtract 1800-d</span>
3 0
3 years ago
Read 2 more answers
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