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Illusion [34]
3 years ago
6

La capital de Puerto Rico es _____.

Physics
2 answers:
velikii [3]3 years ago
7 0

La capital de Puerto Rico es la ciudad "San Juan".

notsponge [240]3 years ago
7 0

Answer:c

Explanation:

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The total number of protons plus neutrons in an atom of ⁴⁵₂₀Ca is
lys-0071 [83]

Answer:

b

Explanation:easy

6 0
3 years ago
A common practice in cooking is the addition of salt to boiling water (Kb = 0.52 °C kg/mole). One of the reasons for this might
lozanna [386]

Answer:

640.59 g of NaCl.

Explanation:

Using Boiling point elevation,

ΔTb = kb * i * b

Where,

b = molality

kb = 0.52 °C kg/mole

i = van't koff factor

ΔTb = ΔTsol - ΔTsolv

= 2°C

2 = 0.52 * b

= 3.846 mol/kg.

Mass of water, solvent = 2.85 kg

Molality is the ratio of the number of moles of the solute to the mass of the solvent.

= 3.846 * 2.85

= 10.96 mol.

Mass of NaCl = molar mass * number of moles

= 58.44 * 10.96

= 640.59 g of NaCl.

5 0
3 years ago
IS IT B!! if not pls helpp!
natita [175]

Answer:

I believe you are correct but we just started this unit

Explanation:

6 0
3 years ago
A wave travels through a medium and displaces the particles perpendicular to the direction in Wich the wave is traveling . This
lianna [129]
Transverse waves travel through a medium and cause particles perpendicular to the direction.
3 0
4 years ago
Force F acts between two charges, q1 and q2, separated by a distance d. If q1 is increased to twice its original value and the d
Step2247 [10]
Okay, haven't done physics in years, let's see if I remember this.

So Coulomb's Law states that F = k \frac{Q_1Q_2}{d^2} so if we double the charge on Q_1 and double the distance to (2d) we plug these into the equation to find

<span>F_{new} = k \frac{2Q_1Q_2}{(2d)^2}=k \frac{2Q_1Q_2}{4d^2} = \frac{2}{4} \cdot k \frac{Q_1Q_2}{d^2} = \frac{1}{2} \cdot F_{old}</span>

So we see the new force is exactly 1/2 of the old force so your answer should be \frac{1}{2}F if I can remember my physics correctly.

9 0
4 years ago
Read 2 more answers
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