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adoni [48]
4 years ago
10

How much work must be done to bring three electrons from a great distance apart to 3.5×10−10 m from one another (at the corners

of an equilateral triangle)?
Physics
1 answer:
-Dominant- [34]4 years ago
8 0

Answer:

1.97 × 10⁻¹⁸J

Explanation:

Charge of an electron  q = -1.9 × 10⁻¹⁹C

Length of one side of the equilateral triangle at whose corners electrons are placed d = 3.5 × 10⁻¹⁰m

Coulomb constant k = 8.99 × 10⁹Nm²/C²

electrostatic potential = (3 kq²) / d

= (3 × 8.99 × 10⁹ × (-1.6 × 10⁻¹⁹)²) / 3.5 × 10⁻¹⁰

= 1.97 × 10¹⁸J

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An apple contains 165 Calories. How many actual calories does it contain? How many joules does it contain
jasenka [17]

Answer:

95 calories

Explanation:

A medium-sized apple has only 95 calories but plenty of water and fiber.

8 0
3 years ago
The whole body metabolic rate of a bottlenose dolphin is 8000kcalsday. The dolphin weighs 190kg. What is the mass specific metab
Komok [63]

Answer: 42.1

Explanation:

Mass specific metabolic rate of a dolphin can be defined as the rate at which the dolphin consume energy per unit mass of body weight.

R = E/M

Where R = mass specific metabolic rate

E = Energy consumption = 8000kcalsday

M = mass = 190kg

R = 8000kcalsday/190kg

R = 42.1

4 0
4 years ago
A skateboarder with a mass of 60 kg moves with a force of 20 N. What is her acceleration?
Zanzabum

Explanation:

Solution,

  • Mass(m)= 60 kg
  • Force (F)= 20 N
  • Acceleration (a)= ?

We know that,

  • F=ma
  • a=F/m
  • a=20/60
  • a=0.333 m/s²

So, her acceleration is 0.333 m/s².

4 0
3 years ago
Intersystem crossing is:
Semenov [28]

An intersystem crossing (ISC) is a non-radiative process that involves the transition between two electronic states with different spin multiplicity. That is, when an electron is excited in a molecule in a basal singlet state (either by absorption or radiation) into a state of greater energy, an excited singlet or triplet state can be obtained.

Therefore, ISC is understood as an a non radio active transition between states with different spin multiplicity.

Correct answer is C:  a radiative transition between states with the same spin.

8 0
4 years ago
Antrenmanlarla matematik 17.gün cevaplari acil​
Ray Of Light [21]

Answer:

ne diyorsun anlamadım cevap anhtarımı

7 0
3 years ago
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