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drek231 [11]
4 years ago
14

A trolley going down an inclined plane has an acceleration of 2cm/s^2 What will be its velocity

Physics
1 answer:
Snowcat [4.5K]4 years ago
5 0

Answer:

V_{f} = 6 cm/s

Explanation:

<u><em>Given:</em></u>

Acceleration = a = 2 cm/s²

Time = t = 3s

Initial Velocity = V_{i} = 0 cm/s

<u><em>Required:</em></u>

Velocity = V_{f} = ?

<u><em>Formula:</em></u>

a = \frac{V_{f}-V_{i}}{t}

<u><em>Solution:</em></u>

2 = \frac{V_{f}-0}{3}

=> V_{f} = 2*3

=> V_{f} = 6 cm/s

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the frequency of a beam of uv light is 1.0 ×10 ^15hz what is the energy in one quantum of this light express it in ev? ​
kap26 [50]

Answer:

4.14 eV

Explanation:

f = 1.0 ×10^15 Hz

h= 6.63×10^-34 J s (  this is called PLANCK 'S CONSTANT)

ENEGY = E = ?

E = hf  ( THIS IS FORMULA FOR ENERGY OF ONE QUANTA OR ONE PHOTON )

E= 6.63×10^-34×1.0 ×10^15

E = 6.63×10^-19 J

As 1eV = 1.6×10^-19 J so changing energy in eV from joules we will divide energy by 1.6×10^-19

hence E in eV = 6.63×10^-19/(1.6×10^-19)

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3 years ago
What is Initial temperature and final temperature equations??<br> ...?
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Space telescopes must be placed in orbit around earth in order to observe short-wavelength radiation.

<h3>What is telescope?</h3>

A telescope is an optical instrument that uses lenses, curved mirrors, or a combination of both to watch distant objects.

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