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Illusion [34]
3 years ago
15

In what direction does your brain see light as traveling when it reflects off an object?

Physics
1 answer:
maks197457 [2]3 years ago
7 0
A. In a straigh line.
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What is the frequency of a wave travelling at 45.45 m/s with a wavelength of 2 m?
HACTEHA [7]

Answer:

22.73 Hz

Explanation:

Frequency = 45.45/2 = 22.73 Hz

4 0
3 years ago
What is the fraction of the hydrogen atom's mass (11h) that is in the nucleus? the mass of proton is 1.007276 u, and the mass of
Alex_Xolod [135]

The mass fraction of the hydrogen atom is 0.9995 u.

<h3>Calculation:</h3>

We know that mass fraction can be determines as,

Mass fraction = Mass of proton/mass of H atom

Given,

Mass of proton = 1.007276 u

Mass of H atom = 1.007825 u

Put the values in the formula,

Mass fraction = Mass of proton/mass of H atom

Mass fraction = 1.007276/1.007825

                       = 0.9995 u

Hence, the mass fraction of the hydrogen atom is 0.9995 u.

Learn more about mass fraction here:

brainly.com/question/9639161

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3 0
2 years ago
The Earth is 81.25 times as massive as the Moon and the radius of the Earth is 3.668 times the radius of the Moon. If a simple p
Alexeev081 [22]

Answer:

option (b)

Explanation:

Mass of moon = m

Mass of earth = 81.25 x mass of moon = 81.25 m

Radius of moon = r

radius of earth = 3.668 x radius of moon  = 3.668 r

Frequency on earth = 2 Hz

Let the frequency on moon is f.

The formula for the frequency is given by

f = \frac{1}{2\pi }\times \sqrt{\frac{g}{l}}

The value of acceleration due to gravity on earth is g.

ge = G Me / Re^2

ge = G x 81.25 m / (3.668 r)^2

ge = 6.039 x G m / r^2 = 6.039 x gm

ge / gm = 6.039

Now use the formula for frequency

\frac{fe}{fm} = \sqrt{\frac{ge}{gm}}

\frac{2}{fm} = \sqrt{\frac{6.039 gm}{gm}}

\frac{2}{fm} = 2.46

fm = 0.814 Hz

4 0
3 years ago
The following is an example of a physical or a chemical change?? Alex made a beautiful origami swan out of a blue sheet of paper
REY [17]
Pretty sure physical, a chemical change would be something of the time of acid rain, meanwhile physical changes are the ones that affect the form not the actual chemical composition
5 0
4 years ago
a step of science investigation tells you to walk 3m in a straight line, then turn 60 degrees to your right. you repeat this ste
IgorC [24]

If you walk 3m in a straight line then turn 60 degrees until you are standing at your original position then you have walked a hexagon

8 0
3 years ago
Read 2 more answers
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