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ANEK [815]
3 years ago
15

Alisha uses wire to connect a battery, a lightbulb, and a switch, but the bulb does not light up even though the switch is in th

e closed position. Which might explain the problem?
Physics
1 answer:
mojhsa [17]3 years ago
5 0

Alisha uses wire to connect a battery, a lightbulb, and a switch, but the bulb does not light up even though the switch is in the closed position. The switch is in closed position that is why her circuit would not work. It must be open so that electrons can move along the wire and enable the lightbulb to light up.

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Why are electrons, rather than protons, the principal charge carriers in metal wires?
Ket [755]
<span>because in any atom the electrons are in the outer orbitals while protons are within the nucleus together with the neutrons. If energy is supplied electrons can jump to higher energy levels and leave the lower orbitals. 
Especially in metals the conduction band is partially filled at room temperature with allows free flow of electrons throughout the metal thus they carry charge. 
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6 0
3 years ago
What is the wavelength associated with an electron with a velocity of 4.8X10s m/s? (Mass of the electron is 9.1X10-31kg)?
amid [387]

Answer:

1.52 nm

Explanation:

Using the De Broglie wavelength equation,

λ = h/p where λ = wavelength associated with electron, h = Planck's constant = 6.63 × 10⁻³⁴ Js and p = momentum of electron = mv where m = mass of electron = 9.1 × 10⁻³¹ kg and v = velocity of electron = 4.8 × 10⁵ m/s

So, λ = h/p

λ = h/mv

substituting the values of the variables into the equation, we have

λ = h/mv

λ = 6.63 × 10⁻³⁴ Js/(9.1 × 10⁻³¹ kg × 4.8 × 10⁵ m/s)

λ = 6.63 × 10⁻³⁴ Js/(43.68 × 10⁻²⁶ kgm/s)

λ = 0.1518 × 10⁻⁸ m

λ = 1.518 × 10⁻⁹ m

λ = 1.518 nm

λ ≅ 1.52 nm

4 0
3 years ago
A speedboat initially at rest accelerates at 4.0 m/s (squared) for 7.0 s. How far does the speedboat move in 7.0 s?
Ulleksa [173]
I think is 3 becuase when he star at 4
4 0
2 years ago
a teacher pushed a 10kg desk across a floor for a distance of 5m. she exerted a horizontal force of 20n. how much work was done?
serious [3.7K]
Work Done = Force x distance
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7 0
3 years ago
The air in a kitchen has a mass of 60.0kg and a specific heat of 1505J/(kg°C).
BARSIC [14]
Your answer is 632,100J which is Choice D
8 0
3 years ago
Read 2 more answers
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