3 years ago

What do u put on the last blank?

Physics

1 answer:

Nookie1986 [14]3 years ago

8 0

The greater the MASS of a moving object, the more kinetic energy it has. <3

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How many significant figures are in 0.0069

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Two significant figures, the 6 and the 9

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A photoelectric experiment is performed where green light with a wavelength of 546.1 nm is shined on a metal plate, creating a p

PtichkaEL [24]

Answer:

$\phi=1.55 [eV]$

Explanation:

We can use the work function equation for a photoelectric experiment:

$\phi=\frac{hc}{\lambda}-K_{max}$

h is the plank constant
c is the speed of light
λ is the wave length
K is the kinetic energy (or K=eΔV)

So we will have:

$\phi=\frac{hc}{\lambda}-e\Delta V$

$\phi=\frac{6.63*10^{-34}*3*10^{8}}{546.1*10^{-9}}-0.728eV$

$\phi=3.64*10^{-19}[J]-0.728 [eV]$

$\phi=(3.64*10^{-19}[J]*\frac{1eV}{1.6*10^{-19}[J]})-0.728 [eV]$

$\phi=2.28 [eV] - 0.728 [eV]$

$\phi=1.55 [eV]$

I hope it helps you!

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An elephant pushes with 200 N on a load of trees. it then pushes these trees for 10 N. How much work did the elephant do?

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Answer:

the answer is 2000Nm

Explanation:

wprk done = force × distance moved

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How much voltage is required to run 0.054 A of current through a 15 resistor? Use AV=IR. O A. 2.8 x 102 v O B. 1.2 V O C. 3.6 x

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Answer:the answer is D

Explanation:

Plug variables in and calculate

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Answer:
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How?
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