Answer:
The right answer is B: they use toners to create high quality outputs
Explanation:
The workflow of a laser printer is simple. It works with an ink formed by pigments, where the laser engraves the entire content in a photosensitive cylinder, which must be copied through an electrostatic charge. This cylinder passes through the toner so that the pigments stick together. Thus, the paper will come into contact with the cylinder, where the dust will fall and be fixed on the paper with the help of the same heat of the laser.
<u>adventages</u>
- They are silent when printing, compared to injection printers.
- The quality is much better than those made by ink printers.
- Prints are more comfortable than ink.
- They are faster and more powerful.
Disadventages
- If you print a large batch of sheets in one fell swoop, they may become blackened or jammed.
- It is more expensive than ink printers or injection printers.
- A long running laser printer may overheat.
- It produces paper jams.
Answer:
220km
Explanation:
Given parameters:
Distance traveled from Minnehaha to Nut Plains = 11km
Distance traveled to Dover = 209km
Unknown:
The distance the soft drink distributor traveled = ?
Solution:
To solve this problem, we must understand that distance is the total length of path covered in a journey.
So;
Distance = 209km + 11km = 220km
The soft drink distributor covered 220km
Answer: B.
but the resistance is lower in the parallel circuit.
Explanation:
A circuit with parallel connections has a lower total resistance than the resistors connected in series. This is consistent with conservation of charge. The power dissipated by each resistor is considerably higher in parallel than when connected in series to the same voltage source.
Answer:
a) F = -1.82 10⁻¹⁵ N, b) K = 9.1 10⁻¹⁶ J
Explanation:
a) To calculate the force between the nucleus and the electrons, let's use the Coulomb equation
F = k q Q / r²
as the nucleus occupies a very small volume compared to electrons, we can suppose it as punctual
let's calculate
F = 9 10⁹ (-1.6 10⁻¹⁹) (79 1.6 10⁻¹⁹) / (10⁻¹⁰)²
F = -1.82 10⁻¹⁵ N
b) they ask us for kinetic energy
let's use Newton's second law
F = m a
acceleration is centripetal
a = v² / r
we substitute
F = m v² / r
v = √ (F r / m)
v = √ (1.82 10⁻¹⁵ 10⁻¹⁰ / 9.1 10⁻³¹)
v = √ (0.2 10⁻¹⁶)
v = 0.447 10⁸ m / s
kinetic energy is
K = ½ m v²
K = ½ 9.1 10⁻³¹ (0.447 10⁸)²
K = 0.91 10⁻¹⁵ J
K = 9.1 10⁻¹⁶ J
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