List five basic steps of the scientific method

Answers

Answer 1

Answer: We can reduce it to optic.

Observation is the process of knowing the problem
Prediction is the process of making a hypothesis
Testing is the experimentation
Interpretation is the data analyzation
Conclusion is the implication and ramifications of the study.

Related Questions

Starting with 100 grams of uranium-238, after one half life has gone by, how many grams of uranium-238 will remain?A._12.5 grams B._25 grams C._50 grams D._100 grams
Forces and Motion:Question 2A student pushes a box to slide it across the floor. Which statement best explains why the box beginsto move?Select one:0 The weight of the box is less than the force of friction.OThe weight of the box is greater than the force of friction.The applied force is greater than the force of friction.OThe applied force is less than the force of friction
An ionic bond would most likely form between atoms of which of these pairs?A. oxygen and oxygen B. magnesium and oxygen C. magnesium and magnesium
Is it easier to form a positive ion with an element that has a high ionization energy or element that has a low ionization energy? Explain.
Viscosity is the tendency of a solid to melt to a liquid. TRUE FALSE

Determine the number of protons and neutrons in an isotope of bromine (br) with a mass number/atomic mass of 79. (the atomic number of bromine is 35.)

Answers

44 neutrons and 35 protons. The number of neutrons you have is equal to the atomic mass minus the atomic number.

2. A magnifying glass is an example of a _______ lens.A. converging
B. double-concave
C. plano-convex
D. plano-concave
Student Answer: C
Answer: Incorrect
Reference:

3. If the distance from a converging lens to the object is less than the focal length of the lens, the image will be _______ the object.
A. real, inverted, and smaller than
B. virtual, upright, and larger than
C. virtual, upright, and smaller than
D. real, inverted, and larger than
Student Answer: A
Answer: Incorrect
Reference:

4. Which of the following values represents an index of refraction of an actual material?
A. .25
B. 0
C. .5
D. 1.25
Student Answer: C
Answer: Incorrect
Reference:

5. Which, if any, of these mirrors can produce a real image?
A. Plane
B. Convex spherical
C. No mirrors can produce a real image.
D. Concave spherical
Student Answer: A
Answer: Incorrect
Reference:

6. When white light is incident on a prism, which one of the resulting color components will have the lowest index of refraction?
A. Yellow
B. Blue
C. Green
D. Orange
Student Answer: C
Answer: Incorrect
Reference:

12. Which of the following is not a reason fluorescent lamps are advantageous over incandescent lamps?
A. Fluorescent lamps operate at a higher temperature than incandescent lamps.
B. Fluorescent lamps are more efficient than incandescent lamps.
C. Fluorescent lamps dissipate more energy as light instead of heat than incandescent lamps.
D. Fluorescent lamps produce light with less glare than incandescent lamps.
Student Answer: B
Answer: Incorrect
Reference:

15. Which of the following is not a characteristic of electromagnetic waves?
A. They can travel through a vacuum.
B. They can be refracted.
C. They can be reflected.
D. They can travel at various speeds through any one material.
Student Answer: B
Answer: Incorrect
Reference:

16. A ray at which angle would produce the most glare?
A. 37 degrees
B. 70 degrees
C. 25 degrees
D. 59 degrees
Student Answer: B
Answer: Incorrect
Reference:

18. Which of the following statements is true of glare control?
A. Using bulbs that aren't frosted will help to diffuse the light and reduce glare.
B. Special care must be taken to prevent glare where a low illuminance is required.
C. Redirecting lamp fixtures and adjusting bulb types will do little to control glare.
D. Indirect lighting is preferred to direct lighting because it produces less glare.
Student Answer: C
Answer: Incorrect
Reference:

19. Which of the following objects uses two converging lenses to produce two images, the second of which is virtual, magnified, and inverted?
A. Slide projector
B. Compound microscope
C. Corrective eyeglasses
D. Camera
Student Answer: D
Answer: Incorrect
Reference:

20. The light intensity of a source is 100 candelas. The illuminance on a surface is 4 lux. How far is the surface from the source?
A. 4 meters
B. 6 meters
C. 5 meters
D. 7 meters
Student Answer: B
Answer: Incorrect

Answers

The answer to question 2 is C. A magnifying glass is an example of a plano-convex lens, where one side of the lens is flat and the other is a convex curve. The answer to question 3 is either B or C. A converging lens is curved on both sides and so the rays of light coming out of it converge at a point, which is known as the focal point. When the object is inside the focal point, the image is real and inverted. If it is inside the focal point, the image is virtual and upright. Therefore the image in this question will be upright. The focal length is the distance between the image that is being magnified and the centre of the magnifying lens. A real image can only be formed when the object is further away from the lens than the focal length. Therefore, in this question, the image is virtual, as the object is closer to the lens than the focal length. The answer to question 4 is D because the index of refraction cannot be less than 1. The answer to question 5 is D because only concave mirrors can produce real images; other types produce virtual images. For question 6, the answer is D. In the rainbow, each of the colours refracts at a slightly different angle; red has the smallest refractive index and violet the largest. Of the options, orange is closest to red. For question 12, A is the answer. A higher operating temperature is not a reason fluorescent lamps are better than incandescent lamps because they have a lower operating temperature. Question 15: all of these are characteristics of different electromagetic waves. For question 18, B is true - special care must be taken when low illuminance is required to reduce glare. The answer to question 19 is B - a compound microscope makes use of two lenses. For question 20, the answer is 5 meters away. The illuminance (E) is equal to light intensity (I) divided by the square distance from the light source (d). Therefore, 4 = 100/d squared. To switch this around, d squared is equal to 100/4 = 25. Then find the square root of 25, which is 5.

What is the best description of what Becquerel observed in his experiment?

Answers

He is best known for his discovery of radioactivity, first reported just over a century ago in the selection reproduced here. The discovery of radioactivity thus represents a key development in the modern understanding of the atom. Hope this helps. Have a nice day.

Which units express specific heat capacity?J/°C, J/K, cal/°C cal/K J
/(gi°C), J/(giK), cal/(gi°C), cal/(giK)
J, cal
°C, K

Answers

Answer : The correct option is $(J)/(g^oC),(J)/(gK),(cal)/(g^oC),(cal)/(gK)$ .

Explanation :

Specific heat capacity : It is defined as the amount of heat required to raise the temperature of one gram of substance by one degree Celsius.

Formula used :

$q=mc\Delta T\nc=(q)/(m\Delta T)$

where,

q = heat required

m = Mass

c = specific heat capacity

$\Delta T$ = change in temperature

The unit of heat are expressed in terms of Joules, calories.

The unit of temperature are expressed in terms of degree Celsius, kelvin.

It is expressed as $(J)/(g^oC),(J)/(gK),(cal)/(g^oC),(cal)/(gK)$ .

The units to express specific heat capacity are cal/K, cal/ $\rm ^\circ C$ , J/K, and J/ $\rm ^\circ C$ . Thus the correct option is A.

Specific heat can be defined as the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree celsius.

The expression for specific heat has been,

heat = mass $*$ specific heat capacity $*$ change in temperature

Calorie or Joule = g $*$ specific heat $*$ K or $\rm ^\circ C$

Specific heat will be:

cal/k
cal/ $\rm ^\circ C$
J/ $\rm ^\circ C$
J/K

Thus, the units to express specific heat capacity are cal/K, cal/ $\rm ^\circ C$ , J/K, and J/ $\rm ^\circ C$ . Thus the correct option is A.

For more information about the specific heat capacity, refer to the link:

brainly.com/question/2530523

Which of the following is the smallest volume? A. 2500 mL B. 250 cm3 C. 2.5 x 10-2 L D. 25 m3

Answers

The answer is c. 2.5*10-2 L. The unit cm3 is equal to mL. m3 is equal to 10^3 L. L is equal to 1000 mL. So after you change all the number to the same unit, you can get the result.

Final answer:

Among the given figures, 2.5 x 10-2 L (or 25 mL when converted to milliliters) is the smallest volume.

Explanation:

The student is asked to compare and determine the smallest volume between 2500 mL, 250 cm3, 2.5 x 10-2 L, and 25 m3. First, let's convert all volumes into a common unit, the milliliter (mL).

2500 mL = 2500 mL (already in mL),
250 cm3 = 250 mL (since 1 cm3 equals 1 mL),
2.5 x 10-2 L = 0.025 L = 25 mL (since 1 L equals 1000 mL),
25 m3 = 25 x 1,000,000 L = 25 x 1,000 x 1,000,000 mL = 25,000,000,000 mL.

From this comparison, we can see that 2.5 x 10-2 L or 25 mL is the smallest volume among the given figures.

Learn more about Volume conversion here:

brainly.com/question/35097419

#SPJ3

Give an example of a 2 phase mixture and describe how you would separate the substances

Answers

First, we should define what a mixture and a two-phase mixture mean.
A mixture is a combination of two or more substances without any chemical reaction occurring between them. Components of a mixture can be separated using physical methods such as heating, filtering, evaporation, .... etc
A two-phase mixture is a type of mixture that contains two different phases of matter, for example solid and liquid phases in one mixture or liquid and gas phases in one mixture.

Now, we can give examples of two-phase mixtures and mention how to separate them:
A mixture of sand and water is considered a two-phase mixture (sand is sold and water is a liquid).
The components can easily be separated using filtration where the sand will remain on the filter paper and water will pass.

Another example is a mixture of sugar and water (sugar is a solid and water is a liquid).
The components can be separated by heating. We can eat the mixture until water evaporates and the sugar is precipitated. The evaporated water can then be condensed into a different container.

Hope this helps :)

$\boxed{{\text{Mixture of sand and water}}}$ is an example of two-phase mixture and this can be separated by $\boxed{{\text{filtration}}}$ .

Further explanation:

Mixture:

The material that is made up of two or more substances is called a mixture. It has no fixed formula and its composition is also varied. All the individual constituents retain their properties after the formation of the mixture.

Types of mixtures:

1. Homogeneous mixtures

Homogeneous is a Latin word that means the same. These mixtures have a uniform composition throughout. These types of mixtures consist of a single phase only. Air, orange juice and blood are the examples of a homogenous mixture.

2. Heterogeneous mixtures

Heterogeneous is a Latin word that means different. These mixtures that have non-uniform composition throughout. These mixtures have more than one phase. Concrete, soda and chocolate chip cookies are the examples of a heterogeneous mixture.

Characteristics of mixtures:

1. It has a variable composition and has no formula.

2. Mixtures are not formed by any chemical reactions.

3. Mixtures can be either homogeneous or heterogeneous.

4. The constituents of the mixtures can be separated by physical methods such as filtration, heating, drying, distillation, crystallization.

5. The properties of the individual particles of the mixture are retained even after the formation of mixtures.

A mixture of sand and water is an example of a two-phase mixture. Here sand is a solid whereas water is a liquid. The components of the mixture are separated by filtration. Sand will remain on the surface of filter paper while water passes through it.

Learn more:

1. Characteristics of a mixture: brainly.com/question/1917079

2. Example of physical change: brainly.com/question/1119909

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Elements, compounds, and mixtures

Keywords: mixture, characteristics, formula, composition, properties, chemical reactions, filtration, distillation, heating, crystallization, homogeneous, heterogeneous, solid, liquid, sand, water, filter paper.

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