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Crazy boy [7]
3 years ago
6

Fish are considered a renewable resource. However, some scientists believe that Earth's oceans are running out of economically v

aluable fish. What is the most likely reason for this?
a. They are no longer reproducing.
b. They are being harvested faster than they can replenish themselves.
c. They are all being eaten by other predators in the oceans, such as sharks and whales.
d. They are migrating to other bodies of water.
Physics
2 answers:
Ludmilka [50]3 years ago
7 0
The correct answer is B. They are being harvested faster than they can replenish themselves. This is because so many people fish for them, but they don't think about the fish needing to reproduce. If the government were to put some sort of limitation to fishing during breeding season, this would help the fish to reproduce more quickly and restore the species.
ch4aika [34]3 years ago
3 0
The most likely answer will be B. Overfishing is still a large issue today, and it can really ruin a habitat. =)
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Since nuclear fusion in the sun creates energy from matter, why doesn't it violate the law of conservation of energy?
alexandr402 [8]

Since nuclear fusion in the sun creates energy from matter, Einstein's formula E=mc² states that matter and energy are equal.

To find the answer, we have to know more about the nuclear fusion.

<h3>What is nuclear fusion?</h3>
  • We are aware that the sun can achieve nuclear fusion by the fusion of hydrogen atoms.
  • These atoms need to get closer to one another in order to fuse.
  • Since both protons inside each nucleus are positively charged, they attempt to repel one another as they get closer to one another.
  • If this issue cannot be solved, nuclear fusion in the sun cannot occur.

Thus, we can conclude that, since nuclear fusion in the sun creates energy from matter, Einstein's formula E=mc² states that matter and energy are equal.

Learn more about nuclear fusion here:

brainly.com/question/25663405

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3 0
2 years ago
You machine that tells you exactly how much work in joules is put into a machine and how much work produced. The reading that yo
marysya [2.9K]
Friction in the machine turned 15 joules of the energy input into heat. If you were monitoring the parts of the machine closely, you would notice that some of them warmed up.
7 0
3 years ago
An ideal spring obeys hooke's law: f = −bikx. a mass of m = 0.3 kg hung vertically from this spring stretches the spring 0.13 m.
Anarel [89]
The force = 0.3 * 9.8 = 2.94
x = 0.13

k = 2.94/0.13
k = 22.6 N/m
5 0
3 years ago
A series ac circuit contains a resistor, an inductor of 150 mh, a capacitor of 5.00 m f , and a source with vmax = 240 v operati
antoniya [11.8K]
Ω=2*pi*f = 2*pi*50 = 314.16

Inductive reactance, ZL = jωL = j*314.16*0.15 = j42.12
Capacitance reactance, ZC = 1/(jωC) =1/(j*314.16*0.005) = -j0.64
Impendance, Z = V/I = 240/0.1 = 2400

Now,
Z=R+j(ZL+ZC) => 2400 = R+ j(45.12-0.64) => 2400 = R + j44.48
Additionally,
2400^2 = R^2+44.48^2 => R = Sqrt (2400^2-44.48^2) = 2399.58 ohms.

Phase angle = arctan (44.48/2399.58) = 1.06°
4 0
3 years ago
An object on a spring whose constant is 30. N/m
MrRa [10]

The mass of the object is 0.0076 kg

Explanation:

The frequency of a mass-spring system (simple harmonic motion) is given by

f=\frac{1}{2\pi}\sqrt{\frac{k}{m}}

where

f is the frequency

k is the spring constant

m is the mass

For the mass-spring system in this problem, we know:

k = 30 N/m is the spring constant

f = 10 Hz is the frequency

Solving the equation for m, we find the mass:

m=\frac{k}{(2\pi f)^2}=\frac{30}{(2\pi (10))^2}=0.0076 kg

#LearnwithBrainly

3 0
3 years ago
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