Exploring sounds around us, measurement and recording of this- how is it done?
Answer:
In order to measure and record sound accurately and scientifically, a sound device called Decibel Meter or a Sound Pressure Level (SPL) Meter is often required.
Other names for the SPL Meter are:
Noise Meter Noise Dosimeter and Sound Level Meter.How it works/How it is done
Sounds are collected by the Noise Meter and recorded in units called Decibels (dB). For instance, you have a recording of 0 decibels when it's extremely quiet or 30 decibels if it's a typical quiet rural area.
A motorcycle or a boom box will emit anywhere between 95 to 102 decibels.
The input mechanism for an SPL Meter is a microphone. The microphone captures the sounds, feeds it into the SPL Meter which computes how many decibels the sound it. The results are then displayed on its screen.
Cheers!
When adding 0.734 and 1.7932, how many significant figures should the answer have?
3
4
05
impossible to tell
Answer:
i believe it is 5
Explanation:
In studies about new medicines, researchers usually
give one group of patients the medicine that is
designed to treat an illness. They give another group of
patients a placebo, which is taken the same way as
the medicine but does not actually contain the
ingredients of any medicine. Different medicines are
tested in different experiments, but the placebos
usually contain the same non-medical ingredients. I
both groups of patients are healed, then researchers
cannot be sure whether the medicine caused
improvement, but if the group given the medicine is
healed while the group given the placebo remains ill,
researchers can conclude that the medicine causes
the illness to go away.
In medical experiments, which group receives
placebos?
the experimental group
the control group
both the experimental and control groups
neither the experimental nor control group
Answer:
The control group
Explanation:
Answer:
The control group
Explanation:
circle the 3 water molecules on the image
The space between leaves on a stem is called
Bacterial species have evolved over millions of years to fill almost every available environmental niche on this planet. Despite this impressive radiation, bacteria are still limited by the availability of carbon and nitrogen sources for their metabolisms. Bacteria may express many different proteins required for uptake and utilization of these compounds for use in their metabolisms. Organic compounds containing carbon and nitrogen are required for both anabolic and catabolic reactions that comprise a cell’s metabolism. Not all bacterial species have the same abilities, so you can use this characteristic to differentiate bacterial species by determining which carbon- and nitrogen-containing media support the growth of the bacteria. Determine whether the following enzymatic reactions are anabolic or catabolic and place them within the correct bin.
1. Glucose is broken down into two pyruvates.
2. ammonia is added to glutamate to form glutamine.
3. four amino acids are linked together to form tetrapeptide.
4. a uracil base is added to a mRNA strand by RNA polymerase.
5. starches are digested into individual glucose molecules.
6. ribose and inorganic phosphate are bonded to form a nucleotide base.
Answer:
1. Glucose breaks down into two pyruvates. CATABOLIC
2. Ammonia is added to glutamate to form glutamine. Anabolic
3. Four amino acids join to form tetrapeptides. Anabolic
4. A uracil base is added to an mRNA strand by RNA polymerase. Anabolic
5. Starches are digested into individual glucose molecules. CATABOLIC
6. Ribose and inorganic phosphate join together to form a nucleotide base. Anabolic
Explanation:
Chemical reactions are classified as anabolic and catabolic depending on whether they form or disintegrate structures, yielding energy to the medium or taking energy from the medium.
Anabolic reactions are those that take energy from the environment and therefore synthesize very complex molecules, of various bonds such as glycogen, starch, among other polysaccharides.
On the other hand, catabolism leads to the destruction of the unions of a chemical product, that is why they have greater entropy and is thus the greatest disorder.
Catabolism releases energy to the environment, it releases it.
For an anabolic reaction to happen, there must be a catabolic one, since it takes the energy released by catabolism, and for a catabolism to happen, an anabolism must first have arisen, that is, the formation of a molecule or particle that is dissociates.
What foods should you eat if you want to increase your intake of complex carbohydrates? Simple carbohydrates?
Answer:
complex carbs you should eat more of whole grains
Answer: Complex carbohydrates:
Fruits- berries, apples
Vegetables- leafy greens, broccoli, carrots.
Whole grain- quinoa, wheat
Beans
For Simple carbohydrates, they are basically sugars and this includes: corn syrup, fruit juice, and any type of sugary foods.
I need help on this question
Answer:
C. Organic molecules is converted to ATP molecules
Is the study of matter and energy complete
Answer:
Not yet because there are many mysteries about energy such as dark matter, dark energy
Explanation:
What two commandments from god can we obey by a biblical approach to science
Answer:
Here are some. I discovered that the clean and unclean food and hygiene laws found in the Book of Leviticus have been based all this time on the God of Abraham's working knowledge of the germ theory of disease and the modern human body and other advanced fields of science unknown to mankind at that time and some fields of science still unknown to mankind today. These laws and instructions still apply to modern times for all humans to follow to help keep our bodies healthy and disease free until we grow old and die of old age.
Hope It Helps:)
A cardiac muscle cell is: A. a voluntary muscle just like skeletal muscle. B. contracts spontaneously. C. is joined to other cardiac muscle cells by structures called intercalated discs. D. has numerous nuclei. E. Two of the statements above are correct
Answer:
E. Two of the statements above are correct i.e. options B and C
Explanation:
Cardiac muscles, also known as myocardium, are one of the three types of muscles found in the heart (the other two being skeletal and smooth muscles). Cardiac muscle cells are striated and branched in structure, with only one nucleus located centrally i.e. mono-nucleated.
Unlike the skeletal muscles, cardiac muscles are involuntary muscles controlled by certain parts of the brain. The cells that make up the cardiac muscles are connected to one another by structures called intercalated discs. Also, cardiac muscle cells contract spontaneously i.e. internally. Hence, options B and C are correct
what is the thermoregulatory center of the brain
Answer:
Your hypothalamus is a section of your brain that controls thermoregulation. When it senses your internal temperature becoming too low or high, it sends signals to your muscles, organs, glands, and nervous system.
4 Convection is the internal energy transfer that
drives volcanic activity. During convection,
A. Earth's interior is heated by radioactive decay.
B. hot materials in Earth's interior move toward
Earth's surface.
C. the materials inside Earth are heated by
gravitational contraction.
D. the sun warms Earth's surface, making its
interior warm.
Answer:
a
Explanation:
In a cross of chestnut X cremello, what proportions would you expect in the offspring?
Answer:
4/4 = 100% Palomino horses with genotype Gg.
Explanation:
Due to technical problems, you will find the complete answer in the attached file.
What classification of decay is located on the gingival third on the facial or lingual surfaces of teeth
Answer:
Smooth-surface decay.
Explanation:
Dental caries is a multifactorial infectious disease of the hard tissues of the tooth (enamel and dentin) that arises on the surface of the tooth and can spread to the pulp. Smooth-surface decay are dental caries that originate on the smooth surfaces of the proximal general teeth, or in the gingival third of the facial and lingual surfaces. This cavity forms when plaque builds up and bacteria are not killed on the flat surface of the teeth.
what is weaning as used in animals production?
Answer:
sheeps are rear for there woll.
that is way this is included
Evolution is biology's core theme that ties together all the other themes. This is because evolution explains
Answer:
The change in the inherited characteristics of organisms over successive generations.
Explanation:
Characteristics that defines a biological organisms are passed down from parent to offspring during sexual reproduction. These characteristic can change over time due to mutation of genes. The new characteristics can either become more dominant; if it enhances the organisms chances of survival, or can die away or even lead to the complete wipe out of the species, if it does not increase the odds of survival of the organism. The mechanism of the development, or eradication of these characteristics is through natural selection, and sexual selection.
What chemical force must be overcome in order to separate the two DNA strands during replication?
Answer:
Hydrogen bonds
Explanation:
DNA strands are held together by pair of complementary base pairs with Purines; Adenine and Guanine pairing with Pyrimidine: cytosine and Thymine;therefore Adenine pairs with Thymine,and Cytosine with Guanine.Theses bases are held together by the hydrogen bonds.
Two hydrogen bonds are in A-T, and three between C-G.
The process of formation of another DNA molecules from the parent template is called replication. Under this process the parent double DNA strands unwinds,and fresh nucleotide line on the parent strands serving as the template.
Thus new double DNA stands are formed with one back bone of alternate sugar and phosphate containing the new DNA strands,while the other strands conserving the parents strands contains the old back bone of sugars alternated with phosphate.This is semi conservative replication because, one of the double stands is new and the other is from the original parent strand.
Other form of replication is called conservative replication in which an entirely new double strands is formed,different from the parent DNA.
It begins with the the unwinding of the DNA strands by the activity of enzyme Helicase which breaks down the hydrogen bonds between bases.This is followed by attachment of primer to the old strands, and the catalysis by Enzyme DNA polymerase which ensure that new nucleotide are attach in 3'-5' direction to form a new strands.
In what ways might a scientist communicate with the wider community in a scientific inquiry
Using things such as the internet. For example, if a scientist wanted feedback, he could turn to an org of other scientists across the globe and get their help.
Answer:
Explanation:
Scientists often communicate their research results in three general ways. One is to publish their results in peer-reviewed journals that can be ready by other scientists. Two is to present their results at national and international conferences where other scientists can listen to presentations
Soil PH measure of the acid content of the soil
Answer:
Soil pH is a measure of the acidity or alkalinity of the soil. A pH value is actually a measure of hydrogen ion concentration. Because hydrogen ion concentration varies over a wide range, a logarithmic scale (pH) is used: for a pH decrease of 1, the acidity increases by a factor of 10.
Species diversity: is not predictable relative to how close an ecosystem is to the equator. decreases as you move away from the equator in both terrestrial and marine ecosystems. increases as you move away from the equator in both terrestrial and marine ecosystems. decreases as you move away from the equator in marine ecosystems, but increases as you move away from the equator in terrestrial ecosystems. decreases as you move away from the equator in terrestrial ecosystems, but increases as you move away from the equator in marine ecosystems.
Answer:
A. decreases as you move away from the equator in both terrestrial and marine ecosystems.
Explanation:
Most of the population of animals in both terrestrial and marine ecosystems lives near the equator because temperature is favorable and there is more food available in the form of producer (plants). When we go away from the equator towards poles, the temperature decreases and also food is unavailable in large quantity so the population of organisms decreases in both terrestrial and marine ecosystems.
Answer:
it's A.
Explanation:
Armed with the results of the seedling study above, which tool would you use to evaluate the claim that the treatment has no effect on the average weight of the resulting plants? Group of answer choices
Answer:
See the answer below
Explanation:
It may seem that the options have been omitted in this question. However, in order to evaluate the claim that a mean from a particular group is statistically higher or lower to a mean from another group, there would be a need to compare the two means.
Mean comparison or testing for a significant difference between means can be carried out using the Student's t-test or one-way Analysis of Variance (ANOVA).
When the means being compared are just for 2 groups as indicated in the illustration, Student's t-test and one-way ANOVA can be used. However, once there are more than 2 group means being compared, one-way ANOVA will only be applicable.
Choose the right answer from the given question.
1. Name the process of gaseous exchange in the body.
a) Lymphatic system
b) Respiration
c) Cardiovascular system
d) Respiratory system
2. Nose, larynx, pharynx, lungs, trachea, and bronchi are the parts of the respiratory
system.
a) True
b) False
3. Which of the following is NOT the function of the respiratory system?
a) Regulate blood pH
b) Helps in gaseous exchange
c) Protection against blood loss
d) Contains receptors for the sense of smell
3. Which of the following is NOT the function of the respiratory system?
a) Regulate blood pH
b) Helps in gaseous exchange
c) Protection against blood loss
d) Contains receptors for the sense of smell
4. Which of these statements is TRUE for pulmonary respiration?
a) Exchange of gases between alveoli of lungs and the blood
b) Exchange of gases between blood and tissue cells
c) Breathing between the atmosphere and the alveoli of the lungs
d) Production of ATP
5. Which of the following controls the normal breathing process?
a) Amino acids
b) Cholesterol
c) Ventral respiratory group
d) Dorsal respiratory group
Answer:
The answer to #1 I believe would be B, #2 would be True, #3 would be D, #4 would be A and #5 would be C or D, but leaning more towards C.
Explanation:
Joe has been diagnosed with major depressive disorder. He interprets negative stressful events using a pessimistic explanatory style. This explanatory style creates a hopeless, depressed state, which then hampers the way he thinks and acts, causing more negative stressful events. Joe's depression is thus, at least in part, due to:
state-dependent memory.
rumination.
a biochemical imbalance.
indicators of depression.
Answer:
Vicious cycle, state dependent memory rumination.
Explanation:
It is state dependent memory rumination and it is due to vicious circle because vicious circle refers to a situation or events that lead to difficulties or problem and the difficulties also lead to another difficulties and these continue on and on or it continue to repeat itself. Joe's negative disorder create the problem of negative stressful interpretation, which then lead to more depressive state and affect the way he think and acts.
It is state dependent memory rumination because Joe interpret negative stressful events based on how his mindset ruminate and process information.
How does your footprint compare to the average? How do you think the calculator's accuracy could be improved?
The movement of water is able to transport minerals and nutrients. Which statement best explain why water is able to do this? A- water is a liquid at room temperature.b- water has a density of one gram per milliliter.c- water absorb heat energy. D- water is an excellent solvent
Answer:
D
Explanation:
water is known as a universal solvent. having the ability and capability to dissolve universal components .
Which of the following intake forms is necessary to ensure no prior medical concerns for a client?
A. Liability waiver
B. Comprehensive client form
C. PAR-Q
D. Recovery assessment
Answer:
C. PAR-Q
Explanation:
PAR-Q is an acronym for Physical Activity Readiness Questionnaire. It is a form containing questions relating to the health status of a client that is about to undergo fitness training. The PAR-Q is one of the intake forms (infact one of the most important) required by a client to fill before starting the physical/fitness training.
The PAR-Q is used to assess a client's health state in order to make a decision on whether or not the fitness training will be commenced. It is the intake form necessary to ensure that there are no prior medical concerns for a client. If there are, the training might be suspended till medical advice is sought.
The right atrioventricular valve (tricuspid) regulates the opening between the _________ and the _________.
Answer:
The right atrioventricular valve (tricuspid) regulates the opening between the right atrium and the right ventricle.
Explanation:
Valves are gates that allow the connection between atria and ventricles. The two valves located on the right side (tricuspid and pulmonary) direct the incoming blood from the body to the lung, where it is oxygenated; from there it returns to the left atrium, to later pass through the mitral and aortic valves. The left atrium connects to the left ventricle through the mitral valve and the right atrium connects to the right ventricle through the tricuspid valve.
what are the essental parts of a flowers give
example,
Answer:
Please read this then you will know your excact ans
12. When considering gravity acceleration and the force of acceleration, what must be true?
A. The direction of acceleration must be perpendicular to the direction of the force.
B. The mass of the body must be the same as the acceleration of the body.
C. The direction of the force and the direction of acceleration must be opposite of each other.
D. The direction of the force and the direction of acceleration must be the same as each other.
PLEASE HELP ASAP
Answer:
The correct option is (D).
Explanation:
Newton's second law of motion gives the relationship between the force and acceleration of an object. It can be given by :
F = ma
It means that the force is directly proportional to both mass and acceleration. If the acceleration increase, force will increas. It would mean that "The direction of the force and the direction of acceleration must be the same as each other".