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posledela
3 years ago
12

Necesito ayuda urgente por favor, gracias 2) Sabiendo que el espacio que recorre un cuerpo en función del tiempo viene dado por

la siguiente ecuación: X(t)=t 2 -8t+6, donde x se mide en metros y t en segundos. a) Realizar la gráfica , posición-tiempo de en el intervalo [0,5] Nota: Tabular para t=0,1,2,3,4,5, ubicar los puntos sobre el plano y luego unir los puntos con una curva. b) Que distancia habrá recorrido en un minuto.
Physics
1 answer:
Viefleur [7K]3 years ago
6 0

Answer:b

Explanation:

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Light with a wavelength of 395 nm illuminates a metal cathode. The maximum kinetic energy of the emitted electrons is 0.76 eV .
lutik1710 [3]

Answer:

520.8 nm

Explanation:

We are given that

\lambda=395 nm=395\times 10^{-9} m

1 nm=10^{-9} m

Maximum kinetic energy,K_{max}=0.76 eV=0.76\times 1.6\times 10^{-19} V

1 e=1.6\times 10^{-19} C

We have to find the maximum wavelength of light.

We know that

h\nu=\frac{hc}{\lambda_0}+K_{max}

Where c=3\times 10^8 m/s

h=6.625\times 10^{-34}

6.625\times 10^{-34}\times \frac{3\times 10^8}{395\times 10^{-9}}=\frac{6.625\times 10^{-34}\times 3\times 10^8}{\lambda_0}+0.76\times 1.6\times10^{-19}

6.625\times 10^{-34}\times \frac{3\times 10^8}{395\times 10^{-9}}- 0.76\times 1.6\times10^{-19}=\frac{6.625\times 10^{-34}\times 3\times 10^8}{\lambda_0}

\lambda_0=\frac{6.625\times 10^{-34}\times 3\times 10^8}{6.625\times 10^{-34}\times \frac{3\times 10^8}{395\times 10^{-9}}- 0.76\times 1.6\times10^{-19}}

\lambda_0=5.208\times 10^{-7} m=520.8 nm

6 0
3 years ago
Which term describes the number of thoughs that pass a point in a given amount of time
NeX [460]

The term that describes the number of thoughs that pass a point in a given amount of time is FREQUENCY.

In wave theory, frequency refers to the number of wave that pass through a fixed point in a given amount of time. Frequency is usually measure in Hertz. The mathematical formula for finding frequency is:

F = Velocity of wave / wavelength of wave.

5 0
3 years ago
The bonds of the products store 22kJ more energy than the bonds of the reactants. How is energy conserved during this reaction?
babunello [35]
The answer should be C.
8 0
2 years ago
Can we write names while writing conversation in board exam​
lora16 [44]

Answer:

ya we can write the imaginary character's name .

So that we  can identify these imaginary people, as we cannot simply write the conversation and leave it .

Or maybe sometimes the reader will get confused as there is no name for the two people .

So, i suggest that you should write the names

Explanation:

You can even ask to your class teacher for further clarification

5 0
3 years ago
Keisha is making a diagram of a simple machine in the body.
Amiraneli [1.4K]

Answer:

Sorry for being late. It is...

A.) X: Load, Y: Fulcrum, Z: Lever

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3 years ago
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