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4 years ago

How does the scientific process generally begin?

2 answers:

5 0

There are several approaches. The most favourable one (in my opinion) is this one:
1. Asking a question
2. Doing a research (how to answer this question)
3. Creating a hypothesis (NOT a thesis!)
4. Experimenting (to prove the hypothesis)
5. Analysing results from the experiment
6. Writing a thesis

Blizzard [7]4 years ago

4 0

Answer : To develop a scientific process is a big task. Initially the scientist or the interested researcher may start with the following steps;

a) Start with an Unsolved question;

b) Conduct experiments;

c) Analyse from the observations of the experiments

d) From the conclusions create an theoretical hypothesis;

e) Check for reproducibility of the test results.

f) Write a thesis and submit to a scientific community.

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Write differences between tornado and typhoon

Gala2k [10]

The difference lies in their size, wind velocity, rate of travel, and duration. A tornado reaches rotating speeds up to 300 miles per hour, travels between 25 and 40 miles per hour, and generally lasts for a few minutes (although it can exist for hours). A typhoon (the term used in the Pacific for a hurricane) has winds that vary from 75 to 200 miles per hour, moves between 10 and 20 miles per hour, has a diameter up to 600 miles, and exists from days up to a week. A tornado generally forms several thousand feet above Earth’s surface, usually during warm, humid weather. A typhoon breeds in low-altitude belts over the ocean, generally from 5 to 15 degrees latitude north or south.

3 0

3 years ago

A duck waddles 3 meters East and then 4 meters North. What is the magnitude and direction of his displacement?

Nadusha1986 [10]

East is our x axis
north is out y axis N
  |
  |
W _____|_______E
|
|
|
S
so he moves 3 m to the right and then 4 upwards

imagine what that looks like.......... a right angle triangle

therefore we can use Pythagorean theorem
let the unknown side be x, which is the hypotenuse in this case

x^2 = 3^2 + 4^2
x^2 = 9 + 16
x^2 = 25
take the square root
x = 5

5 is your magnitude and the direction is NE( North East) or positive direction

5 0

3 years ago

Systems in nature tend to undergo changes toward___? Explain your answer.

IrinaK [193]

The correct answer is option 2. Systems, by nature, tend to undergo changes toward higher entropy and lower energy since this is the state where they are most stable. Entropy is the degree of disorderliness of a substance. Systems tend to go to higher disorder since systems always tend to change which can be linked to disorder and is inevitable.

6 0

3 years ago

A boat travels 800 m east, then 200 m south, then 600 m at a direction of 50° south of west. 1) What is the distance from where

ELEN [110]

Answer:

1) The distance is 779 m.

2) The direction is 58° south of east.

Explanation:

1) To find the distance we have to sum the vectors and then find the magnitude of the resulting vector. Please, see the figure for a better understanding of the situation.

The y-component of the vector A is 0 (because it is directed horizontally relative to the origin of the frame of reference). Then, the vector A must be:

A = (800 m, 0)

The vector B has an x-component of 0, then the vector B will be:

B = (0, -200 m)

Notice that we consider the direction east and north as positive.

To find the components of the vector C we have to use trigonometry. Notice that the vector C is the hypotenuse of the right triangle formed by cx, cy, and C. Then, by trigonometry:

cos 50° = cx/C

C · cos 50° = cx

The magnitude of the x-component of the vector C is:

cx = 600 m · cos 50° = 386 m

In the same way for the y-component of C

sin 50° = cy/C

cy = 600 · sin 50° = 460 m

Then, the vector C will be: C = (-386 m, -460 m)

The resulting vector of the sum of each vector will be:

R = A + B + C = (800 m, 0) + (0, -200 m) + (-386 m, -460 m)

R = (800 m + 0 m - 386 m, 0 m -200 m - 460 m)

R = (414 m, -660 m)

The magnitude of the vector R will be:

R² = (414 m)² + (-660 m)²

R = 779 m

The distance from where the boat started to where it finished is 779 m.

2) To find the direction, we have to use trigonometry again. Please see the figure to notice that the x-component of R is 779 m · cos θ and the y-component is 779 m · sin θ (remember: cos θ = adjacent / hypotenuse and sin θ = opposite/hypotenuse).

Then:

414 m = 779 m · cos θ

cos θ = 414 m / 779 m

θ = 58°

Then, the direction of the resulting vector is 58° south of east

8 0

3 years ago

What types of cells are likely to have lots of smooth ER?

Andrei [34K]

Answer:

eukaryotic cells

Explanation:

"Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is tubular in form and lacks ribosomes. It is present in eukaryotic cells and is associated with lipid synthesis, carbohydrate metabolism, regulation of calcium concentration, and drug detoxification"

source: biologyonline

8 0

3 years ago