Before 1896, many scientists concluded that light could not pass through black paper. In 1896, Henri Becquerel observed that uranium salts could cause a plate covered by black paper to react as if light had reached it. How did this observation affect conclusions about light passing through black paper?

A- Scientists ignored Becquerel’s evidence because uranium is dangerous to use, so his study was not valid.

B- Scientists repeated Becquerel’s experiment until it no longer worked and reported that his conclusions were not valid.

C- Scientists had to revise their earlier conclusion because evidence from Becquerel did not support the original conclusion.

D- Scientists stood behind the earlier conclusion that black paper blocks light because it was already an accepted conclusion.

Answers

Answer 1

Answer:

D

Explanation:

So, I mean it’s kinda hard to explain given that it just makes sense and I took the test and I was right soooooooo

Yeah

Answer 2

Scientists stood behind the earlier conclusion that black paper blocks light because it was already an accepted conclusion. Therefore, option (D) is correct.

What happens to light on the black paper?

A sheet of black construction paper would obstruct light when you tried to shine a flashlight through it. The other side would not be able to see the light, and it would not be reflected. A black item absorbs all light waves and transforms them into heat, which causes the object to warm up.

Uranium, according to Henri Becquerel's theory, would absorb light and reemit it as x-rays. The uranium was placed on photo plates by him. When the plates were developed, he saw that the uranium had in fact been generating radiation resembling x-rays.

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Related Questions

What are the subunits used to make product in dna replication?

Answers

Answer:

DNA polymerase III is a holoenzyme, which has two core enzymes (Pol III), each consisting of three subunits (, and ), a sliding clamp that has two beta subunits, and a clamp-loading complex which has multiple subunits (, , , , and ).

Explanation:

The subunits used to make product in DNA replication are:

I. Alpha (α) subunit.

II. Delta ([tex]\delta[/tex]) subunit.

III. Epsilon ([tex]\epsilon[/tex]) subunit.

Nucleus is the most conspicuous cell organelle that is found in all eukaryotic living organisms.

Basically, the nucleus serves as the site for ribonucleic acid (RNA) synthesis and deoxyribonucleic acid (DNA) replication.

DNA replication can be defined as a biological process through which two identical replicas of deoxyribonucleic acid (DNA) molecules are produced from an original deoxyribonucleic acid (DNA) molecule, especially during cellular division.

This ultimately implies that, DNA replication is a biological process that occurs during cellular division and it involves the duplication of a double-stranded DNA to produce two identical deoxyribonucleic acid (DNA) molecules.

The three (3) main subunits (polymerases) used for making products in DNA replication includes the following:

Alpha (α) subunit.Delta ([tex]\delta[/tex]) subunit.Epsilon ([tex]\epsilon[/tex]) subunit.

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a coyote captures kills and eats a rabbit. what type of symbiotic relationship is this

Answer option

Predator-prey relationship

Mutually beneficial relationship

Competitive relationship

Parasitic relationship

Answers

i believe it is predator prey, the coyote is the predator, and the rabbit is the prey. they both are not competing for food(eliminating competition) , neither are both of them benefited. (eliminating mutualism) and a host is not used in this problem so that also eliminates the parasitic relationship. hope this helps! <33

PLEASE HELP AND EXPLAIN (NO LINKS OR NO RANDOM ANSWERS FOR POINTS)

Answers

The dust may have caused plants to die which led to herbivores dying of starvation then the carnivores slowly started to run out of other dinosaurs to eat and they became extinct. (I hope this made sense and helped some!)

Stion
Unit 3 Tutorials
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Question 11
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Which of these is TRUE of a neuron at resting potential?
O The neuron has more positive charges inside than outside.
O Sodium-potassium pumps transport sodium ions into the neuron.
O Sodium-potassium pumps transport potassium ions out of the neuron.
O The neuron has more potassium ions inside than outside.

Answers

Answer:

O The neuron has more potassium ions inside than outside.

Explanation:

The membrane resting potential is defined as the difference in electrical charge between the interior of neurons and their outer environment. In neurons, both sodium (Na+) and potassium (K+) pumps contribute to generating the resting potential. Neurons have a higher concentration of K+ inside than outside and a higher concentration of Na+ outside than inside. When a neuron is at its rest state, where the inside is negative with respect to the outside, its membrane is more permeable to K+ than Na+, and therefore the resting membrane potential is closer to the equilibrium potential of K+.

Describe passive and active freezing protections that could be set in place for an orchard of apples being grown in New York State and explain why they might be effective.
3 SENTENCES AT THE LEAST

Answers

Answer:

A good answer could include planting the trees on the north-facing flank of a hill (passive) and providing overhead irrigation to allow the grower to give plants an ice coating (active). Apples grown in New York face their strongest threat during bloom-time. North-facing plantings partway up a hillside delays bloom-time to later in spring, reducing the odds of the plants experiencing a hard frost. Irrigation allows the grower to take advantage of the severe overall cold that can be associated with a freeze in upstate New York by using the cold to create a protective ice layer that can preserve the blossoms.

Explanation:

this is the example answer. do what you will w it

The passive and active freezing protections can be done by planting facing north hill and providing overhead irrigation respectively.

What is Protection?

This is the process of guarding something against damage from an external force.

The passive and active freezing protections are effective as it minimizes the risk of freezes and frosts during spring blooms.

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What are are used to build enzymes

Answers

Answer:

they are made from amino acids

Enzymes are made from amino acids, and they are proteins. When an enzyme is formed, it is made by stringing together between 100 and 1,000 amino acids in a very specific and unique order. The chain of amino acids then folds into a unique shape.

What are the major changes that occur after puberty?​

Answers

Answer:

The following are additional changes that may happen for the male as he experiences the changes of puberty: His body size will increase, with the feet, arms, legs, and hands sometimes growing faster than the rest of the body. This may cause the adolescent boy to experience a time of feeling clumsy.

Explanation:

Their hips become more rounded and they get a more defined waist. The vulva, vagina and nipples get bigger and the breasts begin to develop, sometimes unevenly. Other changes include pubic hair appearing and a vaginal discharge – an increase in the mucous produced in the vagina.

Which of the following is correct descriptions of aeolian deposits?


Both loess and sand dunes are formed by accumulation of wind-blown silt

Loess is formed by accumulation of wind-blown sand; sand dunes are formed by accumulation of wind-blown silt

Both loess and sand dunes are formed by accumulation of wind-blown sand

Loess is formed by accumulation of wind-blown silt; sand dunes are formed by accumulation of wind-blown sand

Answers

Answer:

Option D

Explanation:

Loess is a wind blown silt that piles into high dunes which later hardens. On the other hand, the sand blown debris is known as sand dunes which are rounded hillocks and is broken by the wind.

Hence, option D is correct

How does the atmosphere help to make Earth livable? Check all that apply.

causes the seasons
contains oxygen
provides warmth
creates important nutrients
blocks harmful energy from the Sun

Answers

Answer:

- contains oxygen

- provides warmth

- blocks harmful energy from the Sun

Explanation:

this is the answer hope this helps (^_^)

Answer:

the one above me is right

Explanation:

Help me please!!!!!!!!!!!!!!!!!

Answers

Answer:

D

Explanation:

Sanjay is travelling on his cycle and his​

Answers

Answer:

could u add more context?

Explanation:

4. What type of allele will be expressed if both dominant and recessive alleles are
present for a given trait?
a. Somatic
b. Segregated
C. Recessive
d. Dominant
e autosomal

Answers

the answer should be C. recessive

Which of the following biotic factors is associated with increasing the capacity of the organisms to move across fragmented landscapes? Patch size, connectivity,Patch shape, Distance from other landscape patches

Answers

Answer:

connectivity

Explanation:

Natural and anthropogenic alterations affect the landscape. The unmeasurable use of the land for farming, cattle industry, buildings, among many other activities, has caused a severe fragmentation in the original landscape that has been seriously affecting biodiversity.    

Fragmentation occurs when a big extension is transformed into many different and smaller patches, separated by another type of cover. You can imagine, for instance, an area used for mono-culturing, which you can see as a homogeneous space of the same texture and color, and small green islands of original vegetation dispersed in this cropped area. These small islands are separated from each other by the crop.

These alterations produce patches or tesserae in the landscape. Patches are relatively homogenous areas with well-defined borders and environmental characteristics very different from those of the surrounding areas. These are like islands. You can think about patches or tesserae as the remaining pieces or units of the original landscape dispersed inside an affected bigger-sized area.

Fragmentation generates a significant loss of physical continuity between the different areas of the original habitat. It might negatively affect biodiversity by decreasing patch sizes, completely isolating them from each other, and increasing the border effect.

Many species can not survive if they are not in the original habitat. Probably they do not find enough food or shelter, or they are very exposed to predation. So they need to stay in the patch. Most of these species are not even adapted to living on the border of the patches. Eventually, fragmented areas can not support some population species that end by dying because they can not survive for a long time in that reduced place. Patches are not suitable to support too many species.

For these reasons, the connection between islands becomes so important.  To allow species to move from one place to the other, interact with other species, reproduce, find food, shelter, avoid predation. In other words, survive.  Connectivity is how the territory makes possible individuals flow or genetic flow, between the different tesserae.

Where do consumers get most of their nitrogen?

Answers

Answer:

Consumers eat plants or other animals to get their nitrogen.

Explanation:

What adaptation helps the pine tree reduce water loss?

leaves
thorns
Seeds in cones
Woody stems

Answers

Answer:

leaves

Explanation:

The needles of pines, like those of other conifers, are well-adapted for growth in dry environments. In particular, the outer surface of pine needles has a thick waxy layer, called a cuticle, which reduces evaporative water loss.

Answer: Option (A) leaves

Explanation:

Pine trees thankfully have needles, which are thin, waxy leaves that enable them to make food year-round. The waxiness of the needles helps evergreens not lose water to evaporation.

Hope it helps! Good luck!!!

what is the answer? for this

Answers

Answer:

b

Explanation:

because it is the least inclined

we have 4 oceans
How did your predictions match the tracking data for each bottle?

Answers

Scientists use buoys to measure ocean conditions in specific locations over time. There are a variety of different buoys deployed in the ocean; some are attached to the ocean floor, while others drift freely in open waters. All ocean buoys, regardless of type, report some physical characteristic of the ocean or the atmosphere for later analysis.

In this virtual lab activity, you will use buoys to track a bottle as it travels on ocean currents worldwide. Problem: How can data from buoys be used to analyze ocean currents? Hypothesis: Predict the location each bottle came from using the tracking data in the Data and Observations section and the world map of major ocean currents pictured below.

For example:I predict bottle 1 is from ________canada _________, bottle 2 is from _____brazil_______,and bottle 3 is from ______carriboean islands________ based on the tracking data andworld map of currents

10
Select the correct answer.
Which important biochemical process receives a supply of NAD+ions from the fermentation process during anaerobic respiration?
OA Calvin cycle
OB. .
electron transport system
oc glycolysis
OD. Krebs cycle
OE proton pump mechanism
Reset
Next

Answers

Answer:

it is c: glycolysis

Explanation:

its correct on edmentum

Glycolysis is a process of biochemical importance which receives a supply of NAD+ions from the fermentation process during anaerobic respiration. Therefore, option (C) is correct.

Glycolysis  occurs in both aerobic and anaerobic respiration and is a  metabolic process. During anaerobic respiration, glycolysis is the only process that produces ATP.

In the absence of oxygen, the electron transport chain cannot function, and therefore, the Krebs cycle and electron transport system are not active. Therefore, glycolysis is the correct answer.

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How many proton , neutrons , and electrons are there barium ?

Answers

Answer:

137.327 atomic mass units

hope this helps

Explanation:

Answer:

56 protons, 81 neutrons and 56 electrons

Explanation:

hope that helps

IF A RED BIRD EATS IN A SPACE OF 500 FT AND A BLUE BIRD HUNTS WITHIN THIS 500 FT, BUT ONLY IN A SQUARE OF 100FT, WHAT MIGHT HAPPEN TO THE BLUE BIRDS POPULATION. IF THE RED BIRD EATS THE BERRIES IN THE 100FT SPACE.

Answers

Answer: They will die

Explanation: they will have no food to eat to keep them alive


6. What two places might a free-floating DA molecule end up?

Answers

is there any answer choices before i start answering ur question

You've been experiencing acid indigestion lately, and you'd like a quick fix for the problem. You do a little research on the Internet and discover that your problem is caused by excess stomach acid. In the pharmacy aisles, however, you're having a little trouble deciding what to purchase to address the problem. At the pharmacy counter, the clerk recommends that you purchase PEPCID AC or Alka-Seltzer tablets. You want to design an experiment to compare the effectiveness of Pepcid AC tablets and Alka-Seltzer tablets. Which of the following facts would be least likely to complicate your experiment and the analysis of your results?

a. PEPCIO AC and Alka-Seitzer tablets contain different ingredients.
b. PEPCID AC and Alka Seltzer tablets contain different concentrations of the antacid drug.
c. The recommended dosage for PEPCID AC and Alka-Seltzer tablets is different.
d. PEPCIO AC and Alka-Seltzer tablets are sold in different countries throughout the world,

Answers

Answer:

d. PEPCIO AC and Alka-Seltzer tablets are sold in different countries throughout the world.

Explanation:

When there is excess acid in the stomach then Alka-Seltzer tablet can be used. The Ph level of these tablets is higher than 7 because acidic reaction need to be stopped with an introduction of base.

Usually the outermost planet of the solar system is Jupiter.
Please select the best answer from the choices provided
от
OF

Answers

Answer:

False

Explanation:

Mercury

Venus

Earth

Mars

Jupiter

Saturn

Uranus

Neptune

(Pluto)

the outermost planet is technically neptune but some still consider pluto a planet. but jupiter is not the outermost planet.

Which substance provides the brain and body with glucose and energy?

Answers

Carbohydrates,protein and fats

Study the image of a plate boundary. The Asthenosphere is being divided by the Lithosphere on the left of the diagram. Oceanic crust is above the Lithosphere and continues until it reaches the Continental crust on the right. The Lithosphere layer on the right is moving left toward the Lithosphere layer on the left that is moving right and down. Two volcanoes are above the area where the lithosphere layers meet. Which feature is forming? mountain rift valley earthquake island chain

Answers

Answer:

Sorry about the guy above me lolz, the answer is A :))

Explanation:

Have a great day !! muah

Answer:

It is island chain which on mine is D

Explanation:

What's muscles are affected?PLEASE ANSWER a-c

Answers

Answer:

do it in your self hahahahahaa

The word root infect means which of the following?

Answers

Answer:

late 14c., "fill with disease, render pestilential; pollute, contaminate; to corrupt morally," from Latin infectus, past participle of inficere "to stain, tinge, dye," also "to corrupt, stain, spoil," literally "to put in to, dip into," from in- "in" (from PIE root *en "in") + facere "to make, do, perform" (from PIE root *dhe- "to set, put").

Explanation:

3. When the mRNA is translated, the order of its codons determines the order of amino acids in the resulting polypeptide O a. True O b. False​

Answers

Answer:

True

Explanation:

Match the descriptions with the correct phases of the ovarian cycle - progesterone levels are highest during this phase - menses occurs during the first part of this phase - LH levels peak during, or just before, this phase - This phase occurs approximately 14 days before the onset of menstruation - GnRH secretion is inhibited by estrogen secreted from the corpus luteum during this phase - This phase corresponds to the secretory phase of the uterine cycle - A follicle ruptures during this phase - The antrum of a follicle grows larger during the end of this phase A. Follicular phase B. ovulation C. Luteal phase

Answers

B that is what I put and I got it right

Here's a match of the descriptions with the correct phases of the ovarian cycle:

Progesterone levels are highest during this phase: C. Luteal phaseMenses occurs during the first part of this phase: A. Follicular phaseLH levels peak during, or just before, this phase: B. OvulationThis phase occurs approximately 14 days before the onset of menstruation: C. Luteal phaseGnRH secretion is inhibited by estrogen secreted from the corpus luteum during this phase: C. Luteal phaseThis phase corresponds to the secretory phase of the uterine cycle: C. Luteal phaseA follicle ruptures during this phase: B. OvulationThe antrum of a follicle grows larger during the end of this phase: A. Follicular phase

What is an Ovarian cycle?

The ovarian cycle is the monthly series of changes that occur in a female's ovaries, specifically in the development and release of an egg (ovulation).

The cycle is regulated by several hormones produced by the hypothalamus, pituitary gland, and ovaries, and is divided into three main phases: the follicular phase, the ovulatory phase (or ovulation), and the luteal phase.

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How many genes do u have for each trait?

Answers

Answer:

please give me brainlist and follow

Explanation:

An international research effort called the Human Genome Project, which worked to determine the sequence of the human genome and identify the genes that it contains, estimated that humans have between 20,000 and 25,000 genes. Every person has two copies of each gene, one inherited from each parent.

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