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monitta
2 years ago
11

An ion is an atom that has

Physics
1 answer:
liraira [26]2 years ago
8 0

Answer:

a charge

Explanation:

it is charged, because the number of electrons does not equal the number of protons in the core of the atom.

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What current, in units of milliAmperes, would produce a potential difference of 4.5
Bess [88]

Answer;

<u>= 56.96 mA</u>

Explanation;

From the Ohm's law;

V = IR, where V is the potential difference in volts, I is the electric current in amperes and R is the resistance in ohms.

V = 4.5 volts, R = 79 Ω

Making I the subject of the formula we get;

I =V/R

= 4.5 /79

= 0.05696 A

But, 1 A = 1000 mA

Thus; 0.05696 × 1000

        <u>= 56.96 mA</u>

5 0
3 years ago
Which of the following is the best explanation of work?
Zepler [3.9K]

Answer:

D

Explanation:

5 0
3 years ago
Which expressions correctly represent variations of Ohm's law? Check all that apply.
navik [9.2K]

Answer:

V = IR

R = V/I

I = V/R

Explanation:

7 0
3 years ago
In a double-slit experiment, light from two monochromatic light sources passes through the same double slit. The light from the
PtichkaEL [24]

Answer:

533.33 nm

Explanation:

Since dsinθ = mλ  for each slit, where m = order of slit and λ = wavelength of light. Let m' = 10 th order fringe of the first slit of wavelength of light, λ = 640 nm and m"= 12 th order fringe of the second slight of wavelength of light, λ'.

Since the fringes coincide,

m'λ = m"λ'

λ' = m'λ/m"

= 10 × 640 nm/12

= 6400 nm/12

= 533.33 nm

8 0
2 years ago
The lightbulb is an example of
AlexFokin [52]
A object that has been reinvented so it is more energy efficient
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3 years ago
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