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3 years ago

Why was Copernicus’s heliocentric model not believed until gailileo and Kepler provided more evidence?

Physics

1 answer:

mezya [45]3 years ago

8 0

It seems to go against what we see with our eyes. Plus, it contradicted official church doctrine at the time.

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The human eye is most sensitive to green light of wavelength 505 nm . Experiments have found that when people are kept in a dark

liq [111]

1. $5.94\cdot 10^{14} Hz$

The frequency of a photon is given by:

$f=\frac{c}{\lambda}$

where

c is the speed of light

$\lambda$ is the wavelength

The wavelength of the photon in this problem is

$\lambda=505 nm=5.05\cdot 10^{-7}m$

So, the frequency of the photon is

$f=\frac{3\cdot 10^8 m/s}{5.05\cdot 10^{-7} m}=5.94\cdot 10^{14} Hz$

2. $3.94\cdot 10^{-19}J, 2.46 eV$

The energy of a photon is given by

$E=hf$

where

h is the Planck constant

f is the frequency of the photon

The frequency of the photon in this problem is

$f=5.94\cdot 10^{14} Hz$

so its energy in Joules is

$E=(6.63\cdot 10^{-34}Js)(5.94\cdot 10^{14}Hz)=3.94\cdot 10^{-19}J$

And since

$1 eV = 1.6\cdot 10^{-19}J$

The energy in eV is

$E=\frac{3.94\cdot 10^{-19} J}{1.6\cdot 10^{-19}J/eV}=2.46 eV$

7 0

3 years ago

Which of the following describes glass?

kenny6666 [7]

Answer:

is there any choice? in this question?

8 0

4 years ago

The day VFR visibility and cloud clearance requirements to operate over the town of Cooperstown, after departing and climbing ou

pshichka [43]

Answer:

The correct option is;

C. 1 mile clear of clouds

Explanation:

Given that the indicated airspace location is at or below 700 feet AGL therefore, it is taken as being in the region of a class G airspace which covers the airspace regions from the base up to and equal to 1,200 feet beneath the class E airspace and the requirement for VFR flight for class G are 1 mile and clear of clouds.

4 0

3 years ago

What are four metals other than iron that can be made to exhibit magnetic properties? Fill in the blank. Every magnet has ______

Morgarella [4.7K]

Answer:

Four metals other than iron that can be made to exhibit magnetic properties are nickel, cobalt, manganese, and chromium.

two

neutral region

north

magnetic

Explanation:

PennFoster

4 0

4 years ago

Which choice would reveal a chemical property of water?

r-ruslan [8.4K]

Answer:

Explanation:

Testing The PH Means Testing The acidity level of the water of which would be a chemical reaction

8 0

3 years ago