Marine debris is any trash or litter that ends up in a marine environment. This harms wildlife through entanglement, ingestion, and disturbs the habitat of many species of animals. This becomes a global problem when it is a danger to human health. Nails, syringes, and glass can cause harm to people on the beach. On top of that, trash in the waterway increases the amount of chemicals destroying our water quality.
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Answer:
a) t = 3.2 10¹⁴ s
, b) Δm = 1,456 10⁻¹³ kg, mass decreases
Explanation:
In this exercise the removed electrons leave a positive charge on each disk, as the two charges are of the same sign they repel each other, so using Newton's equilibrium equation
–W = 0
F_{e} = W = mg
Electric force is
F_{e} = k q₁ q₂ / r²
Since the two generators remove 500 e/s, q₁ = q₂ = q
F_{e} = k q² / r²
k q² / r² = m g
q = √ m g r²/ k
q = √ (60 9.8 0.001² / 8.99 10⁹)
q = √ 6.54 10⁻⁴
q = 2.56 10⁻² C
This is the charge on each disk
q = # _electron e
# _electron = q / e
# _electron = 2.56 10⁻² / 1.6 10⁻¹⁹
# _electron = 1.6 10¹⁷ electrons
Let's use a rule of proportions to find the accumulation time, if the rate is 500 e/s
t = 1.6 10¹⁷ 1/500
t = 3.2 10¹⁴ s
b) how electrons are losing their mass decreases
Δm = me # _electron
Δm = 9.1 10⁻³¹ 1.6 10¹⁷
Δm = 1,456 10⁻¹³ kg
Answer:
0.471Nm downwards.
Explanation:
For this problem we need to apply the Torque equation,
That is
Where N is the number of turns, A is the area, B is magnetic field and \theta is the angle loop mae with B
We calculate the area, so
Replacing in the equation of Torque,
We can conclude that the magnutide of maximum torque is 0.471Nm downwards.
Answer:
I think it has something to do with both inertia and gravity?
Answer:
Explanation:
Average velocity is change in position over the change in time. You have to take the directions into account. 100km east and then 100km south. That forms a right triangle, so you can use Pythagorean's theorem to find the hypotenuse which would be the displacement from his initial position:
Now take the displacement and divide it by the time it took to do the trip, 3 hours: