7
While visiting a historical fort, John watched a demonstration of the firing of an old cannon from a distance of 50 m. When
the cannon fired, John heard a loud boom a second later. What was the medium that allowed the sound waves to reach
John?
A the ears
B) the cannon
c) the air
D the ground

Answers

Answer 1

Answer:

c) the air......?...

Explanation:

...


Related Questions

Which would cause fatigue in the body of a long-distance runner?

Multiple choice question.

A)
buildup of lactic acid in muscles

B)
metabolizing oxygen aerobically

C)
excess ATP created in muscle cells

D)
decrease of fermentation energy

Answers

Answer:

the anwser is A. buildup of lactic acid in muscles

Explanation:

hope this helps :) explanation below

A long run results in a build-up of lactic acid and other waste products in your muscles and tissues, which causes weakness and fatigue. 1  It takes time for your body to eliminate the waste products and repair the muscle fibers.

As evidenced in the graph, the national average CO concentrations have decreased substantially over the years. All BUT ONE tactic
listed below has been utilized to reduce carbon monoxide emissions. That is:

Answers

Answer:

Explanation:

Carbon monoxide (CO) is a colourless, non-irritant, odourless and tasteless toxic gas. It is produced by the incomplete combustion of carbonaceous fuels such as wood, petrol, coal, natural gas and kerosene. Its molecular weight is 28.01 g/mol, melting point −205.1 °C, boiling point (at 760 mmHg) −191.5 °C (−312.7 °F), density 1.250 kg/m3 at 0 °C and 1 atm and 1.145 kg/m3 at 25 °C and 1 atm, and relative density (air = 1) 0.967 (1,2). Its solubility in water at 1 atm is 3.54 ml/100 ml at 0 °C, 2.14 ml/100 ml at 25 °C and 1.83 ml/100 ml at 37 °C.

The molecular weight of carbon monoxide is similar to that of air (28.01 vs approximately 29). It mixes freely with air in any proportion and moves with air via bulk transport. It is combustible, may serve as a fuel source and can form explosive mixtures with air. It reacts vigorously with oxygen, acetylene, chlorine, fluorine and nitrous oxide. Carbon monoxide is not detectable by humans either by sight, taste or smell. It is only slightly soluble in water, blood serum and plasma; in the human body, it reacts with haemoglobin to form carboxyhemoglobin (COHb).

The relationship of carbon monoxide exposure and the COHb concentration in blood can be modelled using the differential Coburn-Forster-Kane equation (3), which provides a good approximation to the COHb level at a steady level of inhaled exogenous carbon monoxide.

Conversion factors

At 760 mmHg and 20 °C, 1ppm = 1.165 mg/m3 and 1 mg/m3 = 0.858 ppm; at 25 °C, 1 ppm = 1.145 mg/m3 and 1 mg/m3 = 0.873 ppm.

Answer: B

Explanation: just had the same question

Which best explains how natural gas deposits formed?

A. Heat from the sun transformed decaying animals into natural gas
over millions of years.
B. Pressure from sediment turned decaying plankton at the bottom
of the ocean into natural gas.
C. Dead plants compacted underground for hundreds of years
eventually turned into natural gas
D. Coal turned to gas underground, creating natural gas.

Answers

Answer:b pressure from sediment turned decaying plankton at the bottom of the ocean floor in to natural gas

Explanation:just took it in apex and it was right

Answer:

B

Explanation:

Pollution can be best reduced through the use of

A.atomic energy
B.burning coal
C.larger cars
D.solar energy

Answers


B.burning coal




Step by step
The answer is B burning coal

why is only one nucleotide added at a time during DNA replication?

- to maintain the DNA mutations at an equal rate
- to reduce DNA mutations
- to increase DNA mutations
- to pass DNA mutations to the new cell

Answers

Answer:

answers is to increase DNA mutations

this is correct answer

l hope it's helpful for u...

Katie designed an experiment using a paint roller pan, sand, and water. The steps of the experiment are listed below.

Put 3 inches of moist sand on a paint roller pan.
Make a beach by scooping the sand toward the higher portion of the pan.
Put some soil with very small plants growing on it on the sand.
Pour water into the deeper end of the pan.
Pour red mineral oil down the beach and into the water.
Move the roller pan to create wave like motion in the water.

Katie's model most likely represents the interactions between the:

A) Atmosphere, ocean, and cryosphere
B) Atmosphere, ocean, and biosphere
C) Cryosphere, biosphere, and ocean
D) Geosphere, hydrosphere, and biosphere

Answers

Answer:

D

Explanation:

i hope i got the right answer but if i do can i get brainliest??

Answer:

your answer is D

If the half-life of uranium-235 is 700 million years and you have 16 atoms of it, how many half-lives (700-million-year units of time) will pass before only 1 atom of uranium-235 is left?

A. 6
B. 7
C. 5
D. 4​

Answers

Answer: D

Explanation:

Red, Green and Brown Seaweed are examples of multicellular protists.
True
False

Answers

Answer: True

Explanation: sorry if I’m wrong

Which of the following BEST represents competition among organisms?
A. zebras staying together in groups to avoid predators
B. different types or species of trees trying to obtain sunlight and water
O
c. a walking stick insect resembling its environment

D. a cheetah hunting and killing a gazelle for food

Answers

Answer:

B

Explanation:

HELP! QUICKLY! EMERGENCY!!!!

Answers

Answer:

The answer is D because the animal will eventually die

Explanation:

Genetic recombination occurs in many organisms. Which statement explains genetic recombination?

Answers

Answer:

D

Explanation:

Genetic recombination can be due to crossing over (which only occurs during meiosis). Genetic recombination is basically combinations of alleles that the parents don't have and because they are different from the parents, it leads to increased genetic variation.

what is the level of organization for All living organisms on Earth

Answers

Answer:

The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

Explanation:

Hope it helps!

Answer: biosphere

Explanation:

please help grades are due today

Answers

1.) E
2.) J
3.) H
4.) F
5.) C
6.) B
7.) G
8.) K
9.) A
10.) i

If two forces on an object are not equal in size, then the forces are unbalanced, and a change in motion results. Which of the following examples does NOT represents an object with an unbalanced force?

A car sitting in a garage
A leaf falling from a tree
A rocket being launched
A baseball is thrown into the air

Answers

A car sitting in a garage

Over 500 million years ago what was British Columbia ??

Answers

Answer:

500-million-year-old fossil found in BC is ancient ancestor of spiders and scorpions. Palaeontologists in British Columbia have found a fossil of the oldest known ancestor of scorpions and spiders.

reactant - product

If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?

A) 0 grams

B) 2 grams

C) 4 grams

D) 8 grams ​

Answers

Answer:

C

Explanation:

Answer:

c 4 grams

Explanation:

due to the law of conservation of matter, a reaction will produce the same mass as the reactant

Hi! I need help with this question. I’m not 100% sure what it is asking, so if you could at least tell me what it is wanting me to do that would be great :)

Answers

Answer:

DNA:  TAC CCG GGA TTC CAT AAC

mRNA (A-U and C-G): AUG GGC CCU AAG GUA UUG

Amino acids: Met Gly Pro Lys Val Leu

= Suppose a person counted 10 waves passing by over a time period of 1 second. What is the wave frequency?

Answers

The wave frequency is that 9 waves should behave

Rising air cools which results in evaporation.
TRUE
FALSE

Answers

false. hot rises and cold sinks.

think of the ocean, it is colder the deeper you go because the cold water sinks while the hot water rises. plus there's also the heat of the sun on top.
False the person answer above is correct

WILL GIVE BRAINLIEST... ONLY HAVE 5 MINUTES TO ANSWER

CLAIM
A wave you see or feel is the result of...

Answers

Light waves or gravitational waves sorry if not correct

Answer:

replication

Explanation:

Can I have brainliest?

What is the chemiosmotic gradient?

Answers

A greater concentration of hydrogen ions in the inner membrane space than in the mitochondrial matrix.

i need help filling out a graph.
Table 2: Translation of mRNA molecules
Codons. tRNA Anticodons. Amino Acid. Number of Water Molecules Produced
AUG (start)
i just need this first line

Answers

In translation, messenger RNA (mRNA) is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain, or polypeptide. The polypeptide later folds into an active protein and performs its functions in the cell.

Answer:

Hello, did you finish it? I need help filling it out as well.

Explanation:

in a forest the taller trees can flourish while the growth of Smaller vegetation is restricted. What is most likely the reason for this occurrence?

A- the tree trunks are stronger than the smaller plant stems.
B- The smaller vegetation does not have access to the pollinators
C- the soil is too deep for small vegetation to grow
D- the smaller vegetation does not receive enough sunlight​

Answers

Answer:No one knows exactly how many species live in the world's tropical rainforests — estimates range from 3 to 50 million species — rainforests are the undisputed champions of biodiversity among the world's ecosystems, containing far higher numbers of species on a per-area basis relative to sub-tropical, temperate, and boreal ecosystems. For example, whereas temperate forests are often dominated by a half dozen tree species or fewer that make up 90 percent of the trees in the forest, a tropical rainforest may have more than 480 tree species in a single hectare (2.5 acres). A single bush in the Amazon may have more species of ants than the entire British Isles. This diversity of rainforests is not a haphazard event, but is the result of a series of unique circumstances.

Explanation:

Which of the following is an example of codominance in genetic traits? O A tall pea plant and s short pea plant produce tall pea plants. O An orange cat and a black cat produce an orange-and-black cat. O A blue-eyed man and a brown-eyed woman produce a blue-eyed child. O A color-blind woman and a man with normal vision produce a color-blind sond.​

Answers

Answer: An orange cat and a black cat produce an orange-and-black cat

Explanation:

Codominance means that you see both of the traits in the phenoytpe. So the correct answer would be "An orange cat and a black cat produce an orange-and-black cat"

Does all living thing have DNA?

Answers

Answer:

No

Explanation:

plants or animals don't need a DNA

Answer:

yes

Explanation:

l o l

What are THREE consequences of a warming Earth over the next 50 years?

Answers

Answer:

increase in sea level due to the melting of glacierswarming of the sea / oceans / river will gradually kill marine lifedesertification.

Xylem is a plant tissue made up of elongated cells stacked end to end the length of the plant's stem. How does xylem help a plant survive?

A) exchange gases with the atmosphere

B)pulls water and nutrients up the stem from the soil

C)collects sunlight for the plant to use during photosynthesis

D)transports glucose made during photosynthesis to cells throughout the plant

Answers

Answer:

B) pulls water and nutrients up the stem from the soil.

Explanation:

Xylem is a specialized tissue that mechanically supports plants and allows them to suck water and nutrients from the soil, almost like you would use a straw.

If the mass of Earth increased, how would your weight and your mass be affected?

Answers

Answer:

Answer: Your weight is nothing but force of gravity between the earth and you (as an object with a mass m). ... In this case, if the earth' mass goes up by 10%, then the force of gravity on you, or your weight, will increase by the same amount, that is 10%.

Explanation:

help pleaseeeeeeee
i attached a image

Answers

Answer:

I think it is the grasshopper.

Answer:

Based on the food chain, we cannot tell for sure

Explanation:

You can only identify omnivores with a food web. In food chains it only shows one source of food for each animal, so we wouldn't know if one of the animals eats both autotrophs and heterotrophs.

Question
1. What happens to the host cell in the
lysogenic cycle?

Answers

Answer:

In a lysogenic cycle, the phage genome also enters the cell through attachment and penetration. ... During the lysogenic cycle, instead of killing the host, the phage genome integrates into the bacterial chromosome and becomes part of the host. The integrated phage genome is called a prophage.

Explanation:

Answer:

During the lysogenic cycle, the bacteria will enter the prophage and use its chromosomes to reproduce. This will continue until it eventually becomes the lytic cycle.

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4. Sinong mga Pilipino na gumagawa ng mga palamuti, estatwa, at imahen para sa simbahan.A. Felix Hidalgo, Juan Luna at Romualdo Teodoro de JesusB. Juan Luna, Romualdo Teodoro de Jesus at Cipriano BacaC. Cipriano Baca, Felix Hidalgo, at Manuel AsuncionD. Romualdo Teodoro de Jesus, Manuel Asuncion, at Isabelo Tampico Simplify the expression. Multiply9 + square root 3 / 12- square root 3 The blank rain kept a sweat during our entire camping trip. A. mammoth B. destitute C. incessant D. kinetic Solve for x in the diagram below.X=? Identify future taxable amounts and future deductible amounts.Listed below are 10 causes of temporary differences. For each temporary difference, indicate (by letter) whether it will create future deductible amounts (D) or future taxable amounts (T) Temporary Difference 1. Accrual of loss contingency; tax-deductible when paid. 2. Newspaper subscriptions; taxable when cash is received, recognized for financial reporting when the performance obligation is satisfied. 3. Prepaid rent; tax-deductible when paid. 4. Accrued bond interest expense; tax-deductible when paid. 5. Prepaid insurance; tax-deductible when paid.6. Unrealized loss from recording investments at fair value; tax-deductible when investments are sold. 7. Warranty expense; estimated for financial reporting when products are sold; deducted for tax purposes when paid. 8. Advance rent receipts on an operating lease as the lessor; taxable when received. 9. Straight-line depreciation for financial reporting; accelerated depreciation for tax purposes. 10. Accrued expense for employee vacation days not yet taken; tax deductible when employee takes vacation in future. During world war 1 the Russian army was What is the slope of the line that passes through the points (0, -4)) and (-2, -1) Please help, it would be much appreciated. Ill mark as brainliest Preparing a consolidated income statement - with noncontrolling interest, but AAP or intercompany profitsA parent company purchased an 70% interest in its subsidiary several years ago with no AAP (i.e., purchased at book value). Each reports the following income statement for the current year, as shown in part b. below.b. Prepare the consolidated income statement for the current year.Elimination EntriesParent Subsidiary Dr. Cr. ConsolidatedIncome statement:Sales $6,000,000 $900,000Cost of goods sold (4,200,000) (540,000)Gross profit 1,800,000 360,000Income (loss) from subsidiary 88,2000 0Operating expenses (1,140,000) (234,000)Net income $748,200 $126,000Net income attributable to noncontrolling interestsNet income attributable to parent I need help ???please write an conclusion on why GPS devices should be in electronics What are the two types of aquatic biomes Choose three muscles for each naming criteria and explain how those muscles exemplify the naming method. Some will of course have multiple criteria for naming. Is 5 over 9 greater then 0.57? A student graphed an ordered pair on a coordinate plane that was located on the y axis and was 5 units above the origin. Write the ordered pair that the student graphed with these characteristics. Edward the Confessor led the Norman Conquest.True False a tshirt company charges a $30.00 design fee plus $6.00 printing fee. How much would 5 shirts cost? 15 shirts? and 18 shirts cost HURRY IM TIMEDRead the passage carefully.When I make myself imagine what it is like to be one of those women who live at home, faithfully serving their husbandswomen who have not a single exciting prospect in life yet who believe that they are perfectly happyI am filled with scorn. Often they are of quite good birth, yet have had no opportunity to find out what the world is like. I wish they could live for a while in our society, even if it should mean taking service as Attendants, so that they might come to know the delights it has to offer.The Pillow Book, Sei ShnagonBased on the passage, what inference can be made about the writers opinion?She thinks that women who live at home are unhappy.She thinks that women who live at home have many opportunities.She thinks that women who live in the imperial palace are unhappy.She thinks that women who live in the imperial palace serve their husbands. can someone pls answer this fast? I will mark you BRAINLIST how long will it take a seal swimming at the speed of 8 miles per hour to travel 52 miles