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Ainat [17]
3 years ago
7

Example of optical object​

Physics
2 answers:
Alik [6]3 years ago
5 0

Answer:

Telescope,cameras

Hope it helped

alex41 [277]3 years ago
5 0
Telescopes&cameras//
You might be interested in
What is the frequency in hertz of a signal that repeats 80,000 times within one minute? What is its period?
Harman [31]

1333.3 is the frequency in the hertz of a signal that repeats 80,000 times within one minute. 0.00075 is its period.

The frequency of a repeated event is its number of instances per unit of time. In some cases, it is also referred to as temporal frequency or ordinary frequency to underline differences with spatial and angular frequencies, respectively.

The length of time it takes for a particle in a medium to complete one full vibrational cycle is the period of a wave. Being a time, a period is measured in time units like seconds, hours, days, or years. The Earth's orbit around the Sun has a duration of around 365 days, and one cycle of the Earth lasts 365 days.

frequency = cycle /second

frequency = 80000 / 60

frequency = 1333.3 hertz

Period = 1 / frequency

Period = 1 / 1,333.3

Period = 0.00075

To know more about  frequency refer to:  brainly.com/question/14472937

#SPJ4

5 0
2 years ago
Which best summarizes the scientific process that led to our current understanding of DNA? Please help
solniwko [45]

The answer is B.)

This is because for years scientists have build up and found discoveries that led to recent discoveries brought by previous scientists.

Hope this helps

7 0
3 years ago
Read 2 more answers
Just think about this.
diamong [38]
This ain’t the place, bud. If you have a QUESTION, then you can post it here.
8 0
2 years ago
Read 2 more answers
If you jump off a 10 m diving platform, how long will it take you to hit the water?
Vilka [71]

Answer:

<h2>t=1.43 s</h2>

Option A is the correct option.

Solution,

S=10 m

u=0 m/s

a=9.8 m/s^2

Now,

<h3>2s = a {t}^{2}  \\ or \:  {t}^{2}  =  \frac{2 \times 10}{9.8}  \\ or \:  {t}^{2}  =  \frac{20}{9.8}  \\ or \:  {t}^{2}  = 2.04 \\ or \: t =  \sqrt{2.04}  \\ t = 1.43 \: seconds</h3>

hope this helps...

Good luck on your assignment...

8 0
3 years ago
1. A huge spool of wire, 10,000 meters long, weighs 81.34 N. You cut off a meter or so and tie it between two posts, 0.660 m apa
WARRIOR [948]

Answer:

The beat frequency is 6.378 Hz.

Explanation:

Given that,

Length of wire = 10000 m

Weight = 81.34 N

Distance = 0.660 m

Tension = 52 N

Frequency = 196 Hz

We need to calculate the mass of the wire

Using formula of weight

W= mg

m = \dfrac{W}{g}

Put the value into the formula

m=\dfrac{81.34}{9.8}

m=8.3\ kg

The mass per unit length of the wire

m_{l}=\dfrac{m}{l}

Put the value into the formula

m_{l}=\dfrac{8.3}{10000}

m_{l}=8.3\times10^{-4}\ kg/m

We need to calculate the frequency in the wire

Using formula of frequency

f_{w}=\dfrac{1}{2l}\sqrt{\dfrac{T}{m_{l}}}

Put the value into the formula

f_{w}=\dfrac{1}{2\times0.660 }\sqrt{\dfrac{52}{8.3\times10^{-4}}}

f_{w}=189.62\ Hz

We need to calculate the beat frequency

Using formula of beat frequency

f_{b}=f_{in}-f_{w}

Put the value into the formula

f_{b}=196-189.622

f_{b}=6.378\ Hz

Hence, The beat frequency is 6.378 Hz.

5 0
2 years ago
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