What is the wavelength of an X-ray whose frequency is 2.0 × 1018 Hz? Hint: An X-ray is an electromagnetic wave, so its velocity is equal to the speed of light (3.0 × 108 m/s).
A.
1.5 × 10-10 m
B.
3.0 × 10-8 m
C.
6.0 × 10-9 m
D.
0.6 × 10-11 m
Answer:
A. 1.5 × 10-10 m
Explanation:
Given the following data;
Frequency = 2.0 × 10^18 Hertz.
Speed of light = 3.0 × 10^8 m/s
To find the wavelength;
Wavelength = speed/frequency
Substituting into the equation, we have;
Wavelength = 3.0 × 10^8/2.0 × 10^18
Wavelength = 1.5 × 10-10 meters.
Question 4 of 20 :
Select the best answer for the question.
4. How do soils become overly saline?
O A. Salt from fertilizer accumulates in the soil
O B. Plains are flooded with seawater during large storms, which evaporates.
O C. Salts accumulate as water evaporates in poorly drained arid fields.
O D. As the climate warms, salts are deposited with acid rain.
O Mark for review (Will be highlighted on the review page)
<< Previous Question
Next Question >>
Answer:
C
Explanation:
When irrigation water containing significant salt content is used—without applying extra water to leach out the salts—accumulation of salts can create a saline soil.
______ receptors detect changes in internal and external body conditions.
Sensory
Motor
Answer: Sensory Receptors
what is the meaning of sewage system
Sewage System
Describe how Mendel's two laws are illustrated by the movement of chromosomes in meiosis. Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used.
a. metaphase I
b. anaphase I
c. in seperate gametes
d. meiosis II
e. in one gamete
f. law of Segregation
g. depend on
h. independent of
i. law of Independent Assortment
j. meiosis I
1. _____is illustrated by the behavior of two pairs of homologs during_____. The alignment of one homologous pair is_____the alignment of other pairs. 2. _____is illustrated in_____when homologs separate. Alternate alleles of a gene found on homologs segregate from each other and end up_____.
Answer:
1. law of Independent Assortment; metaphase I; independent of.
2. law of Segregation; meiosis I; in separate gametes.
Explanation:
Between 1856 and 1863, Gregor Mendel developed a series of mating experiments using pea plants, which enabled the discovery of some basic principles of inheritance. These principles/laws are stated as:
1) Law of segregation: this principle states that the inheritance pattern of phenotypic traits is characterized by the presence of a gene pair and each gamete carries only one allele for each gene pair so offspring inherit one gene variant (allele) from each parent
2) Law of independent assortment: this principle states that the genes responsible for the inheritance pattern of different traits are independently sorted from one another and thereby different traits are independent one from another.
3) Law of dominance: this principle states that the dominant allele will always be expressed in heterozygous individuals (this law is only applicable in cases of complete dominance).
b. What is the probability that event 1 AND event 2 will occur? = probability of event 1 X probability of
event 2.
i. From a cross of Yy and Yy peas, what is the chance of getting YY?
Answer:
please rate if this was helpful
Explanation:
How do you think Homeostasis of an organism and cell transport are connected?
Answer:
no they are not connected
Answer:
Cell transport helps maintain homeostasis because it keeps the conditions in the typical ranges within all of the cells in the organism.
Explanation:
Why do many plants have specialized cells that produce strong odors?
A. To attract prey
B. To scare off predators
C. To attract insects
D. To collect more sunlight
SUBMIT
Answer:
c
Explanation:
some plants use this as a way so they could pure insect to trap them and digest them
Plants have specialized cells that produce strong odors to attract insects.
Example:- The inflorescence of the titan arum plant attracts specific pollinators by emitting an intense, carrion‑like odor.Why plants attract insects?Flowering plants attract pollinating insects with scent from their flowers and bright colors. If they have become infested with herbivores like caterpillars, they attract beneficial insects like parasitic wasps with the help of scent signals from their leaves.Flowers attract insect for pollination too.
To know more about pollination here
https://brainly.com/question/13260796
#SPJ2
Differences between ephyra of Aurelia and Medusa of Obelia
Answer:
The answer is below
Explanation:
There are differences between ephyra of Aurelia and Medusa of Obelia some of which are:
1. While aurelia developed from the metamorphism of ephyra, the medusa is developed by the budding of blastostyles
2. Similarly, despite the resemblance in body structure, the aurelia is considered jellyfish, while obelia is considered Jellyfish.
3. Also, the medusa period in aurelia is dominant, while that of Obelio is reduced
PLEASE HELP ME WITH THIs
MULTIPLE CHOICE QUESTION
What is Descent with Modification?
Similarities in offspring due to having same parents
Differences in offspring due to random genetic
mutations or the recombination of parent's DNA.
Differences in offspring due to learned traits.
What will happen to a plant if put in a box with only one hole?
Answer:
does it have water and sun through the hole?
Explanation:
if not it will die. if you specify i will edit my answer.
Answer:
yes if watered but it would have drainage problems
Explanation:
hope this helps sorry if it doesn't have a good rest of your night :) ❤
4. Kingdom Protista - Click the characteristics of organisms in this kingdom. Click all that apply. all live in moist environments amoebe and paramecium feed on other organisms these organisms are large and land-dwelling some make their own food (photosynthesis) but most take in or absorb their food eugiena make food through photosynthesis most members are one-celled (unicellular) Match the GARAMECULIM with its characteristics. Click all that apply.
Answer: the A or C ok plz 5 stars
Explanation:
Describe beta decay.
A team of scientists is studying several plant species that they think could become new farm crops. The scientists want to apply selective breeding to
develop one of the species into useful crop plants.
Which property of a plant species would be MOST USEFUL for meeting the scientists' goal?
A. very low genetic variation
B. very high genetic variation
C. producing only a few fruits and seeds each growing season
D. growing slowly from seedlings to maturity
A _______ error occurs when sister chromatids fail to separate properly during meiosis.
nondisjunction happens
Explanation:
The loss of a single chromosome from a diploid genome is called monosomy while the gain of one chromosome is called trisomy
During pregnancy under what condition is Rh factor incompatibility a problem
Answer:
what type of qustion is this
Explanation:
Which statement describes the general
pattern of winds near the equator?
A. Winds are generally weak because the
equator is a region of mostly low air
pressure.
B. Winds are generally strong because the
equator is a region of mostly high air
pressure.
C. Winds are generally weak because the
equator is a region where low and high air
pressure atmospheric bands come together.
D. Winds are generally strong because the
equator is a region where low and high air
pressure atmospheric bands come together.
Answer:
A
Explanation:
do i need to explain
What is the relationship between an individual named Pinus palustris and an individual named Pinus elliottii? (2 points)
a
They belong to the same species.
b
They belong to the same genus.
c
They have one parent in common.
d
They live in different areas.
Answer:
I would think it's B hope this helps.
Explanation:
Answer:
The answer is,
B ). They belong to the same genus.
Explanation:
I took the test.
In 1929, Edwin Hubble observed the velocity at which galaxies were moving away from the Milky Way. The graph below shows the relationship between this velocity and the distance those galaxies were from the Milky Way.
What conclusion can be drawn from Hubble’s data?
Objects that are closer are moving slower, suggesting that the Universe is shrinking.
Objects that are closer are moving faster, suggesting that the Universe is expanding.
Objects that are farther away are moving faster, suggesting that the Universe is shrinking.
Objects that are farther away are moving faster, suggesting that the Universe is expanding.
Answer:
Answer is a
Explanation:
A. lozxzxzl stxzop chxzxzeating oxzn testzs lmaxxo
Answer:D
Objects that are father away are moving faster,suggesting that the Universe is expanding .
Explanation:I took an test on this it’s right
Question 20 of 20 :
Select the best answer for the question
20. Which of these statements about the Ogallala Aquifer is true?
O A. Its water usage is closely regulated,
O B. It's beneath the East Coast.
O C. It's running out of water.
D. It has enough water to last 6,000 years.
Mark for review (Will be highlighted on the review page)
<< Previous Question
Next Question >>
Answer:
C!!
Explanation:
It's not B because it's located in the great plains. Not D because in 50 years, 70% of the aquifer will be gone. Not A because water use isn't regulated.
Ogallala Aquifer is the rock holding the groundwater in the Great Plains of America. The Ogallala Aquifer is running out of water. Thus, option C is correct.
What is Ogallala Aquifer?Ogallala Aquifer is an underground layer of water that is held by the rocks, pebbles, and gravel that make the water well above the surface. It is not beneath the East Coast but is situated on the Great Plains of the United States.
It has been reported that the water usage of the Ogallala Aquifer is not regulated and hence it does not have enough water to last up to 6,000 years. At approx 70%, the water of the aquifer will be soon gone resulting in the deprivation of the water.
Therefore, option C. the Ogallala Aquifer is running out of water is correct.
Learn more about Ogallala Aquifer here:
https://brainly.com/question/1161419
#SPJ2
Question 7 of 20 :
Select the best answer for the question.
7. What does eutrophication cause?
A. Increases in fish populations
O B. Toxic algae blooms
O C.A new food source for birds
O D. A reduction in water pollution
O Mark for review (Will be highlighted on the review page)
< Previous Question
Next Question >>>
Answer:
Toxic Algae Blooms
Explanation:
Floodwater deposits a large amount of sediment. excess nutrients promote the growth of algae is a cause of eutrophication.
what is unequal reproductive success
Unequal reproductive success, also known as differential reproductive success, is a fundamental concept in the theory of evolution proposed by Charles Darwin.
It refers to the variation in the number of offspring produced by individuals within a population based on their inherited traits and adaptations.
Individuals possessing advantageous traits that better suit their environment are more likely to survive, reproduce, and pass on these favorable traits to their offspring.
On the other hand, individuals with less favorable traits may have lower reproductive success.
Over successive generations, the frequency of advantageous traits increases in the population, leading to the process of natural selection and the gradual evolution of species to better adapt to their changing environments.
Know more about reproductive success:
https://brainly.com/question/33607130
#SPJ6
?Which form of energy is NOT correctly associated with the related example
kinetic energy: fat molecules O
potential energy: water held behind a dam o
kinetic energy: movement of muscles
chemical energy: glucose o
Answer:
kinetic energy: fat molecules
Explanation:
Fats store energy so it would be potential.
Kinetic energy: fat molecules
Kinetic energy is the energy that an object or particle uses during its motion. Potential energy is the stored form of energy already present in the object or particle. Chemical energy is the energy stored in the bonds of chemical substances. Water held behind the dam will have potential energy the water currents store energy within them which can be used to move the turbine in the water dam to produce electrical energy. Movement of muscles during walking, running, or performing any other activity which can be seen in the form of displacement from one region to another is due to kinetic energy. Glucose is a chemical molecule whose bonds when broken releases energy in the form of ATP or adenosine triphosphate which is a chemical energy. Fat molecules store energy in the adipocytes in the form of potential energy not kinetic energy. Hence, option kinetic energy: fat molecule is incorrect.Learn more about kinetic energy:
https://brainly.com/question/12669551
i)Which one of the following substances have sour test.a) acid b)base c) salt d) all of these
Answer:
a) acid
Explanation:
Acid is a chemical substance that is capable of donating protons (H+) when in an aqueous solution. This property makes a substance an acid, although the ability to donate completely or partially distinguishes a strong and weak acid.
One of the characteristics of acids is their SOUR TASTE. This characteristic sour taste is attributed to the hydrogen concentrations present in acidic foods or substances e.g unripe fruits.
6. What is the name of the repeating units that make up DNA?"
O Nitrogen Base
O Nucleotide
O Phosphate Group
O Sugar-phosphate backbone
Refer to Table 3.1 and complete the following table by dragging the name of each functional group to its correct location.
The correct answer is as follows:
1. Carboxyl R-COOH present at fatty acid and some amino acid
2. Hydroxyl R-OH Present in sugar and some amino acids
3. Carbonyl R- C=OH Present in sugars
4. Amino R-NH2 Present in all amino acids
5. Sulfhydryl R-SH Present in some amino acids
6. Phosphate [tex]PO^{3-}_{4}[/tex] Present in phospholipids and nucleotides
All given are the functional group that are bound with the compound with covalent bond and provide special characteristics for specific type of chemical reactions.
Carboxyl group is a group that bond with organic compound and has addition -COOH to the compound that give them specific chemical properties.Hydroxyl are the -OH group that usually present naturally in some amino acids and sugars.Carbonyl group present naturally in many sugars and bound -C=OH to compound and gives it specific chemical properties.Amino group are present all the amino acids and helps in forming proteins and peptides.Sulfhydryl is a functional group that has hydrogen and sulfur bound with the organic compound as -SH and found in some amino acids.Phosphate group is found in all the nucleotides and make backbone of nucleic acids, also found in phospholipids.Thus, the correct table is provided above.
Learn more about functional groups:
https://brainly.com/question/14618322
Who does the mesosphere share a boundary with?
Answer:
The boundaries between layers in the atmosphere have special names.
Explanation:
The mesopause is the boundary between the mesosphere and the thermosphere above it.
The stratopause is the boundary between the mesosphere and the stratosphere below it. Scientists know less about the mesosphere than about other layers of the atmosphere.
in the levels of organization of plants, what are the two tissues and their functions?
In a population of 239 pea plants in equilibrium, 47 individuals have white petals, while the rest have purple petals. Color is controlled by a single gene with two alleles. Purple is dominant to white. How many individuals in the population should be heterozygotes if the population is in Hardy-Weinberg equilibrium
Answer:
The number of heterozygous individuals in this population is 120.
Note: All the results are rounded up. Because of this, you might get a similar value in your results but not exactly the same. That is ok, just follow the steps.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.