A piece of wood weighs 72 g. What is its density
if its volume is 20 cm'?​

Answers

Answer 1

Answer:

desnity is equal weight divided by volume ,so 72/20= 3.6

Explanation:

Hope this helps


Related Questions

Allopathic Speciation can occur by which of the following

Answers

Allopatric speciation, the most common form of speciation, occurs when populations of a species become geographically isolated. ... Selection and genetic drift will act differently on these two different genetic backgrounds, creating genetic differences between the two new species.

im giving brain to correct answer!

The photo shows a hydra. What are hydras tissues made of?

A. Specialized cells

B. organs

C. bones

D. organ systems​

Answers

Answer: B. organs

Explanation:

Answer:

Explanation:

SPECIALIZED CELLS I got is wrong when I tried organs on my exam!!!!!!!!!!!

My father was crying it was the first time I saw him cry I had never thought it possible

Answers

Answer:

Yeaaaa well for me it's my step-dad because my dad died but i heard my step-dad cry with my mom they have separation depression and my mom had to take a flight with me somewhere but ya long story but i it made short- have a good day-! :D

Explanation:

which of these changes happens when you run

Answers

It boosts brain power. Along with your heart your brain becomes stronger when you run. As oxygen reaches your brain. Memory-making neurotransmitters are also enhanced during physical activity. Your body starts to change. Your stomach might lose a bit of fat your quads will likely gain a bit more muscle and you might slim down in some other unexpected areas.

What is the Eustachian tube?
it helps minimze sounds
helps to equalize pressure
it helps maximize sound vibrations
it helps with balance

Answers

Answer:

I think first one i don't really know

Explanation:

2. It’s helps to equalize pressure

Please help! Will mark brainlisttt !!!!

Answers

Answer:

It is not possible for Shaun's aunt and the fella to have a child with large eyes because either parent needs at least one dominant allele for large eyes to have a possibility of a child with large eyes

which of the following cells not have specialized tasks within the organism?
a. prokaryotic. cells
b. eukaryotic cells
c. animal cells
d. plant cells

Answers

Answer:a. prokaryotic. cellsExplanation:

why has CO2 and other greenhouse gases increased so much since 1850

Answers

Answer:

Because

Explanation:

Because there are more people in the earth, more inventions using greenhouse gases, Therefore more people+more cars, lawnmowers, ect.

This will most likely increase as time goes on (assuming that the population grows like it has been for the last 100 years).

Can anyone help me with my homework

Answers

1. gases 2. pollutants 3. chemicals 4. heat 5. rain

In most natural populations rapid exponential growth is unsustainable. As populations
increase, environmental resistance causes the growth rate to slow down, until carrying
capacity is reached. Brainstorm several factors that could be considered as environmental
resistance.

Answers

Answer:
Carrying capacity is defined a the ability of the natural ecosystem to take care of the environment which does not necessarily cause the resistance in population increase.
Explanation:
The earth indeed has a mechanism of delivering changes to the system and keeping it intact but as the case of the rapid growth of population arises the mother nature sees this as an exponent of unsustainable growth as the resource used to sustain large populations is no longer available or are exhausted.
A population increase so does the carrying capacity and workload of the natural environment which at the time gets slow due either due to the man's artificial technology or the natural process like hurricane or earthquake itself.
But seeing the nature as providing possibilities for the existence of the societies throughout ages and hence trying to maintain its originality may break those activities that it considers resistance as several biotic factors like predators, disease, competition, and lack of food.

How have the factors that trigger an asthma attack changed since the 1900s? As a researcher, how would you put together the clues given here to explain the emerging epidemic?

Answers

so if you look up things that can cause an asthma attack it will also show that viruses and bacteria are a cause. with asthma you lungs could already be inflamed as well as your air way wich makes it harder to breath. when you have c-19 it will inflame your lungs even more so it makes it even harder to breath given an asthma attack. more asthma attack now are probably caused by c-19 because it is all over the place and the percent of asthma attack by virus has dramatically increased.

How are fossils different from animals living today?

Answers

Answer: fossils are remains of dead or extinct animals/plants

Fossils provide evidence about life on Earth. They tell us that life on Earth has changed over time. Fossils in younger rocks look like animals and plants that are living today. Fossils in older rocks are less like living organisms.

12. Which are the classification of hazard?
A.) Physical, Mechanical, Chemical, Biological and Psychosocial environment
B). Physical, Mechanical, Chemical, Biological and Exposure
C.) Physical, Mechanical, Chemical, Biological and Risk
D.) Physical, Mechanical, Chemical, Biological and Appropriate​

Answers

Answer:

12. Which are the classification of hazard?

A.) Physical, Mechanical, Chemical, Biological and Psychosocial environment

B). Physical, Mechanical, Chemical, Biological and Exposure

C.) Physical, Mechanical, Chemical, Biological and Risk

D.) Physical, Mechanical, Chemical, Biological and Appropriate

Explanation:

12. Which are the classification of hazard?

A.) Physical, Mechanical, Chemical, Biological and Psychosocial environment

B). Physical, Mechanical, Chemical, Biological and Exposure

C.) Physical, Mechanical, Chemical, Biological and Risk

D.) Physical, Mechanical, Chemical, Biological and Appropriate

12. Which are the classification of hazard?

A.) Physical, Mechanical, Chemical, Biological and Psychosocial environment

B). Physical, Mechanical, Chemical, Biological and Exposure

C.) Physical, Mechanical, Chemical, Biological and Risk

D.) Physical, Mechanical, Chemical, Biological and Appropriate

12. Which are the classification of hazard?

A.) Physical, Mechanical, Chemical, Biological and Psychosocial environment

B). Physical, Mechanical, Chemical, Biological and Exposure

C.) Physical, Mechanical, Chemical, Biological and Risk

D.) Physical, Mechanical, Chemical, Biological and Appropriate

Help please someone please what is the answer

Answers

this is actually true.
This is false! Disregard other answer.

1 and 2 pls!! Will give brainliest for the right answer:)

Answers

Answer:

1; b 2; a

Explanation:

Answer:

1.)c

2.)a

Explanation:

different types of energy​

Answers

Answer:

There are many types of energy such as chemical, heat, sound, electric and light.

Explanation:

Examples: of these are electrical coming from kinetic energy the movement of two objects moving together. Then there is chemical energy which is stored in bonds of chemical compounds, the product of chemical energy is heat. 

List one abiotic and one biotic factor that humans use to limit pest population.

Answers

Answer: temperature, animal

Explanation:

Abiotic factor is a non-living environmental factor like soil, water, temperature, humidity, sunlight, and others. Biotic factor is a living factor including living beings like microbes, humans, insects, and others. A limiting factor is the one which can reduce the abundance and growth of living organisms. A limiting factor can be abiotic or biotic.

Temperature is one of the abiotic factors which can reduce the abundance of pests. Increase in temperature can kill pests, which cannot tolerate the rise in temperature. Animal that feed on pests can also reduce the abundance or population of the pests. Like lizards, frogs, and others.

What recent idea about the earth helped support Darwin's ideas about evolution?
A) the earth was unchanging and very
young
B) the earth was a lot older but still looked exactly the same as it did when
it first formed
C) the earth was a lot older and that it had changed (for example mountains
had formed) since it first formed
D) none of these - Darwin didn't care about geology

Answers

B because i said and it’s the right answer

when were biofules invented?????????????

Answers

Answer:

1930s

Modern biodiesel fuel, which is made by converting vegetable oils into compounds called fatty acid methyl esters, has its roots in research conducted in the 1930s in Belgium, but today's biodiesel industry was not established in Europe until the late 1980s.

Explanation:

I searched it up it.

1853 or 1893

Even though scientists E. Duffy and J. Patrick experimented with biofuels as early as 1853, the first engine created to use biofuel was by Rudolph Diesel. In fact, Rudolph Diesel showed the first biofuel car engine in Augsburg, Germany on August 10, 1893. Since then, August 10 has been known as International Biodiesel Day.

Sorry if this didn't help.

Which best describes the mutations and variations that affect natural selection? 1)They are chosen Miss Zoo was watching a comedy in the movie theater. 2)They are random Professor Astro was stretching in the kitchen. 3)They are always positive. 4)The injury was not done with a fallen object. 5)They are always negative The injury was not a stubbed toe.​

Answers

Answer:

2) they are random

Explanation:

example: crossing over

Djdjsjjsjxjxjxjxjxjfj

What produces enzymes?

~There are 8 letters
~ 2nd letter is an “A”
~ 5th letter is a “R”

Answers

Answer:

Pancreas

Explanation:

How do viroids and pirons compare with viruses?

Answers

Answer:

there are different

Explanation:

b'cus the spelling is different

Answer:

by they both have great tech

Explanation:

how many members of each team is included in playing kickball?
A.5
B.6
C.7
please answer....​

Answers

Answer:

suppose to be 8 but the minimum number is 6

The corrct answer is B. 6 players

What does the upper case letter in a genotype represent?
A. the recessive gene

B. the dominant gene

C. purple

Answers

Answer:

B. the dominant gene

What function of the cell does cancer mainly affect?
A. Cell division

B. Photosynthesis

C. Cell transport

D. Cellular respiration

Answers

Answer:

A) Cell Division

Explanation:

When someone has cancer their cells grow abnormally and spread very fast ( which is bad because these cells have cancer in them which spread around your body it’s why most people who are in late stages of cancer usually develop it in other places) . Normal body cells grow and divide and know to stop growing. Over time, they also die. Unlike these normal cells, cancer cells just continue to grow and divide out of control and don't die when they're supposed to.

Cancer cells usually group or clump together to form tumors.

Answer:

A. Cell division

Explanation:

Cancer cells are cells that divide relentlessly, forming solid tumors or flooding the blood with abnormal cells. Cell division is a normal process used by the body for growth and repair.  

Question 9 of 30
Which of these economic problems is a result of a global issue?
A. Earth's fossil fuel resources are quickly becoming exhausted.
B. A business that relies on older customers is losing profits.
C. Tourism is less popular in one large city than another.
O D. A person's carbon footprint is larger than his friend's.
SUBMIT

Answers

Answer:

A

Explanation:

Because of all gases escaping into the air

Warm air moves upward, while cold air moves downward. Which of the following best explains this pattern of heat transfer?
A
Differences in density caused by temperature differences create buoyant forces.

B
Gravity pulls cold air downward more strongly than warm air.

C
High-energy particles bounce upward off the ground in large numbers, causing convection.

D
Gravity acts on particles but not on energy, so thermal radiation rises.

Answers

Answer:

A) Density

Explanation:

cold air is more compact than warm air since particles aren't as active, therefore it is more dense and heavier than warm air.

It's been awhile so my dearest apologies if this is wrong.

Where do weather phenomena such as hurricanes and tornadoes occur?
A) stratosphere
B) troposhere
C) mesophere
D) ionosphere
E) chronosphere

Answers

Answer: B

hope this helps !

Answer:

b

Explanation:

Explain how the super bug was created

Answers

Answer:

A superbug refers to a germ that has formed resistance to multiple drugs that once treated the infection caused by the germ. The term “superbug” was developed by social media. While any germ may become a superbug, bacterial and fungal strains that routinely infect humans, animals, and crops are most likely to do so.

Explanation:

Asthenosphere is the
A) movement of objects toward each other
B) solid, outermost layer of the Earth
C) layer of Earth directly below the crust
D) crust and the upper portion of the mantle
E) solid layer of the mantle below the lithosphere

Answers

Answer:

solid layer of the mantle below the lithosphere

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