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3 years ago

Instructions:Select the correct answer.

Physics

2 answers:

Firdavs [7]3 years ago

7 0

This is job vacancy announcement

weqwewe [10]3 years ago

6 0

Answer:

The answer is C. Letter of interest.

Explanation:

Just took the test.

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In what ways can students use time management? Check all that apply.

Korvikt [17]

Answer: the answer is A, C, E

Explanation:

Time management is apart of your study schedule so you will need to determine when to study, same goes with how to use ur study time, lastly it helps create ur study schedule to help find out what time you are free to study. :)

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3 years ago

An undamped oscillator has period ro= 1.000 s, but I now add a little damping so that its period changes to r i= 1.001 s.

Firlakuza [10]

This Question has mistakes.Correct question is

An undamped oscillator has period τo=1.000s , but I now add a little damping so that its period changes to τ1=1.001s.

What is the damping factor β? By what factor will the amplitude of oscillation decrease after 10 cycles? Which effect of damping would be more noticeable, the change of period or the decrease of the amplitude?

Answer:

β=0.28 /sec

Amplitude=0.0606

Explanation:

$T_{o}=2\pi /w\\T_{1}=2\pi /\sqrt{w^{2} -\beta^{2} }\\ As\\T_{o}=1 \\T_{1}=1.001\\From T_{o}\\w=2\pi \\So\\T_{1}=w/\sqrt{w^{2} -\beta^{2} }\\\beta =0.00447w\\\beta =0.00447(2\pi )\\\beta =0.28sec^{-1}\\ Amplitude=Ae^{-\beta t}\\ after\\ t=10T_{1}\\so\\Ae^{-\beta(10t_{1}) }=e^{-\beta(10t_{1}) }\\=e^{-\(0.28)(10)(1.001) }\\Amplitude=0.0606$

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4 years ago

If average acceleration is calculated using the equation, “change in velocity / change in time,” what is an objects acceleration

harina [27]

Answer:

Acceleration of object= $8cm/s^{2}$

Explanation:

Given:-

Velocity (v)=24 cm/s

Time (t)=3 s

To calculate acceleration (a) of object=?

Now,

$acceleration =\frac{velocity}{time}$

$a=\frac{v}{t}$

$a=\frac{24}{3}$

$a=8 cm/s^{2}$

Therefore object acceleration = $8cm/s^{2}$

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3 years ago

A two-dimensional crystal has a rectangular unit cell, with spacings between the centers of the atoms of 0.5 nm in one direction

pav-90 [236]

So directly the cell density value in a rectangle is:

$5*10^{17} cells/cm^{2}$

In this exercise, we must first calculate the area of the rectangle, remembering that you need to convert from nm to cm is:

$A=B*H\\A=(0.4*10^{-7})*(0.5*10^{-7})= 2*10^{-15}$

Next, let's calculate the density from the calculated area:

$\frac{N}{A} = \frac{1000}{2*10^{-15} } = 5*10^{17}$

In this way, the calculation represents that there is:

$5*10^{17} cells/cm^{2}$

Learn more: brainly.com/question/18320053

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3 years ago

Which sequence shpes the steps of the proces of science in an order in which they might occur?

ivanzaharov [21]

The steps of the process of science in an order in which they might occur

exploration >> hypothesis >> prediction >> experiment.

The correct option is D.

<h3>Explanation:</h3>

A series of sequential steps are included in the scientific method, which is how knowledge in the scientific field is acquired.
When a question arises from observing the natural world, a hypothesis is a predetermined explanation of the question.
Experimental and/or observational procedures must be used to test a hypothesis and determine whether it is true or false.

<h3>What are some fundamental scientific procedures?</h3>

When scientists conduct research and study, they use specific science process skills. The thinking processes that scientists, teachers, and students use when conducting science include observing, categorizing, communicating, measuring, inferring, and predicting.

To know more about process of science visit:

brainly.com/question/3987688

#SPJ4

I understand that the question you are looking for is:

Which sequence shows the steps of the process of science in an order in which they might occur?

A. exploration, question, opinion, conclusion, hypothesis

B. question, observation, experiment, analysis, prediction

C. experiment, conclusion, exploration, application

D. exploration, hypothesis, prediction, experiment

6 0

2 years ago