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Dmitry_Shevchenko [17]
3 years ago
8

Who was the decline in the anchovy of peru blamed on

Physics
1 answer:
____ [38]3 years ago
6 0
<span> The failure of the anchovy harvest in 1972 was blamed on El Niño.</span>
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Which statement best describes what Kendall can measure?
Vaselesa [24]

Answer + Explanation:

B

She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder.




Hope This Helped :D

6 0
2 years ago
Why do windows have two panes of glass separated by a layer of air
Soloha48 [4]

Air is a poor conductor of heat.  The air trapped between the two panes is a pretty good <em>insulator</em>.  It does a lot to prevent heat from flowing through the windows ... keeping heat IN during the Winter, and OUT during the Summer.

7 0
3 years ago
A bullet of mass m and speed v is fired at, hits and passes completely through a pendulum bob of mass M on the end of a stiff ro
dexar [7]

Required value of initial speed of the bullet be ( 4M/m)√(gL).

Given parameters:

Mass of the bullet =m.

Mass of the bob of the pendulum = M.

speed of the bullet before collision = v

Speed of the bullet after collision = v/2.

Length of the pendulum stiff rod = L.

Let speed transmitted to the pendulum be u.

Using principle of conservation of momentum:

mv = Mu + mv/2

⇒ Mu = mv/2

⇒ u = (m/M)v/2

We know that: to make the bob over the top of the trajectory without falling backward in its circular path, required speed be = √(4gL). [ where g = acceleration due to gravity]

To be minimum initial speed the bullet must have in order for the pendulum bob to just barely swing through a complete vertical circle:

u = √(4gL)

⇒  (m/M)v/2 = √(4gL)

⇒ v =( 4M/m)√(gL).

Hence, minimum required  speed of the bullet be ( 4M/m)√(gL).

Learn more about speed here:

brainly.com/question/28224010

#SPJ1

7 0
1 year ago
What is the basis for rutherford's planetary model?
Olenka [21]
The basis for Rutherford's Planetary model, was the results he got from experiments.

He observed that most of the alpha particles he fired at a gold foil, passed through the foil, but only few were deflected back. So he concluded that most of the Atom would be empty space, with a positive entity at the center.
3 0
3 years ago
How much gravitational potential energy does a 1.0 kg hammer have on a shelf 1.5 m above the ground?
jok3333 [9.3K]

Answer:

14.7 J

Explanation:

PE=MGH

PE= 1.0 x 9.8 x 1.5 = 14.7 J

8 0
3 years ago
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