Answer:D
Explanation: Because it has the least amount of density in it. All the others are heavier, meaning they will sink. Just like if you drop a rock water and a feather, the feather will float.
Density def:
Density, mass of a unit volume of a material substance. ... Density offers a convenient means of obtaining the mass of a body from its volume or vice versa; the mass is equal to the volume multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d).
The rock with a mass of 8 grams will float when placed in water because the density of this rock is less than the density of the water.
Given,
Water has a density of 1g/mL.
There are four rocks that all have the same volume of 10 cubic centimeters.
The mass of each of these rocks is given below.
A.) 30 grams
B.) 20 grams
C.) 12 grams
D.) 8 grams
We need to find which one of the four rocks will float when placed in water.
What is density?Density is the ratio of mass and volume.
D = mass / volume
If an object's density is less than the water density the object will float on the water.
Find the density of each rock.
All rocks have the same volume.
V = 10 cm³
Convert it into milliliters.
1 cm³ = 1 ml
10 cm³ = 10 ml
So,
V = 10 ml
A.) 30 grams
D = 30 g / 10 ml = 3g / ml
B.) 20 grams
D = 20 g/ 10 ml = 2g / ml
C.) 12 grams
D = 12 g / 10 ml = 6g / 5 ml = 1.2 g / ml
D.) 8 grams
D = 8 g / 10 ml = 4 g / 5 ml = 0.8 g / ml
We see that Option D is the only rock that is less than the density of water.
i.e 0.8 g / ml < 1 g / ml
Thus rock with a mass of 8 grams will float when placed in water.
Learn more about density here:
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What do tissues combine to form?
organs
organisms
organ systems
cells
Answer:
Organs
Explanation:
Cells Create tissues, Tissues create organs, Organs make up the organ system, Organ system makes up organisms
You are riding in a car and speed up. What are the possibilities for the acceleration that your car undergoes? (Select all that apply.) Also i'm in 5th grade
-2.0 mph/s
-5.0 mph/s
2.0 mph/s
5.0 mph/s
Answer:
All of them
Explanation:
Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both. In a car you could accelerate by hitting the gas or the brakes, either of which would cause a change in speed.
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Part B
Do you think the methods shown in these images guarantee the successful production of offspring? Argue your point using scientific reasoning.
These are the methods so that you don't say "where are the methods" just to steal points
Answer:
No. The bee may travel to a different species of plant, so the pollen may not fertilize another flower. The wind can blow the dandelion seeds into an area where they can’t sprout. The squirrel might come back for the seeds it buried in the ground.
Explanation:
Edmentum
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Answer:
Explanation: bro
Which of the following is described by the change in an object’s position? please helppp
1. position
2. force
3. motion
Answer: C:motion
Explanation:
We can predict that summer days will be longer than winter days.
True
False
Answer:
true
Explanation:
The hemisphere that's tilted closest to the Sun has the longest, brightest days aka summer
Once an object is in motion, what type of energy is being used? im in 5th grade btw
Answer:
Kinetic energy
Explanation:
Kinetic energy means you are in motion and creating friction and Potential energy is when you are staying in one place.
Hope this helps! Sry if I get it wrong!
what is the reverse direction of endocytosis is
a-exocytosis
b-pinocytosis
c-phagocytosis
HELP ASAP!!! JUST ANSWER WITH LETTER PLEASE
Answer:
a
Explanation:
Based on the description, can you identify the rock type?
Metamorphic
Intrusive Igneous
Extrusive Igneous
Sedimentary
Answer:
Igneous Rock
Explanation:
They have gas bubbles which would form the small holes in the rock.
Types of igneous rocks that sound like the description are Pumice and Obsidian rocks
Hopes this helps
Answer: Intrusive igneous.
"I was now, for the first time in my life, a field hand. In my new employment, I found myself even more awkward than a country boy appeared to be in a large city. I had been at my new home but one week before Mr. Covey gave me a very severe whipping, cutting my back, causing the blood to run, and raising ridges on my flesh as large as my little finger."
a. Douglass uses a factual tone to describe his new experience at his employment, explaining horrible moments to demonstrate how bad things were.
b. Douglass speaks in an angry tone, remembering how Mr. Covey treated him and showing us how much he was in pain.
c. Douglass uses a sad tone to show how upset he was at being whipped right when he got to his new employer.
d. Douglass speaks hopefully, describing how he would soon be free of Mr. Covey.
Answer:
D
Explanation:
D
Answer:
Explanation:
D
Which statement gives an advantage of multicellular organisms?
One cell performs all of the necessary functions.
All of the cells are the same.
They can grow large.
They can reproduce quickly.
Explain pls
Describe how the force of gravity acts upon an object, and give an example. btw this is 5th grade i just copied and paste what my teacher said lol please help
Explanation:
Gravitational force or force of gravity is the weakest force in the universe. It is a non contact force and is always attractive in nature.
Force of gravity always acts in the downward direction.
It is denoted by letter g.
examples of force of gravity are as follows :-
When a ball is thrown from the top of a roof it always goes downwards due force of gravity.When a ball is suspended with an inextensible string the ball's weight act download direction due to the formula of W = mg.The force that causes a car to coast downhill even when you aren't stepping on the gas.The force that causes a glass you drop to fall to the floor.The force that holds the gases in the sun.hope this helps you.
Read the excerpt from Narrative of the Life of Frederick Douglass. What is Frederick Douglass' point of view about Baltimore based on the following sentences?
"Their names were Peter, Isaac, Rich, and Jake. These were esteemed very highly by the other slaves, and looked upon as the priveleged ones of the plantation; for it was no small affair, in the eyes of the slaves, to be allowed to see Baltimore.
a. Baltimore is a place slaves rarely got to see, so those who did were held in a high regard.
b. Baltimore is a fantastic place, and if the slaves go there they can be free.
c. Baltimore was where all of the masters would meet to sell their slaves.
d. Baltimore was cursed by the slaves, because they could never see it.
I think it would be A.
Answer:
a. Baltimore is a place slaves rarely got to see, so those who did were held in a high regard.
Explanation:
A car drives with a constant speed of 55 miles per hour. How far can it travel in three hours? Also i'm in 5th grade not in high school this is science
Answer:165mph
Explanation: just do 55*3
Which example best illustrates flower-pollinator coevolution?
A. Bees carry pollen grains from flower to flower.
B. Hummingbirds use long beaks to collect nectar from tubular flower
C. Butterflies rest on pale-colored flowers.
D. Ants eat flower nectar and occasionally get pollen stuck to their bodies.
Answer:
a or b I think its A tho
Explanation:
The best example iillustrates flower pollinated coevolution is Bees carry pollen grains from flower to flower.
What is coevolution in flower?Coevolution is the term used to describe the mutually reliant evolution of at least two species. Since its initial description in relation to insects and flowering plants, coevolution has been used to explain fundamental evolutionary processes like sexual reproduction, contagious diseases, and ecological communities.
Coevolution works by exerting reciprocal selective pressure on two or more species, similar to an arms race where competitors try to outdo one another. Predator-prey, host-parasite, and other competitive relationships between organisms are classic examples.
Even though coevolution often only involves two species, it can occasionally involve more. Coevolution also produces modifications that are advantageous to both parties.
Therefore, The best example iillustrates flower pollinated coevolution is Bees carry pollen grains from flower to flower.
To learn more about coevolution, refer to the link:
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I need help please!!
Answer:
Explanation:
Solids, liquids and gases are three states of matter. In solids, the particles are tightly packed together. In liquids, the particles have more movement, while in gases, they are spread out. Particles in chemistry can be atoms, ions or molecules.
Which part of the eye refracts light and focuses it on a single spot?
cornea
retina
iris
pupil
Answer:
Cornea
Explanation:
Internet
Answer:
Cornea
Explanation:
What is the term for the "invisible force" that holds you to Earth's surface? im in 5th grade btw
Answer:
gravity
Explanation:
gravity helps keep everything grounded
GRAVITY IS THE INVICIBLE FORCE
Explanation:
1. You are given a number of mixtures. Which of the choices below would be a heterogeneous mixture?
A. Salt dissolved in water?
B. A cake batter that has been baked?
C. Fruit salad?
D. A container of iron filings?
Explain why the answer you chose is the correct answer.
The _______ of an object is where the object is in relation to other objects, or points of reference. Btw this is 5th grade
Answer:
Position
Explanation:
I don't know how to explain
Answer:
Position, but technically origin would also work.
Explanation:
1. Earths ozone layer absorbs solar radiation,protecting the biosphere.Which atmospheric layer includes the ozone layer?
Answer:
stratosphere (The second layer of the earth's atmosphere)
Explanation:
Which part of the eye shrinks and enlarges depending on the amount of light that is present?
visual cortex
retina
cornea
pupil
Will give braineist***************100 points************* PLS HELP ME pls have the correct answer
PLEASE HELP PLEASE!!! ILL DO ANYTHING JUST PLEASE!!!
Answer:
the highest rides happen when the moon is full
Explanation:
please mark brainliest
The Moon's mass is lower than that of Earth, thus its gravity is ____ Earth’s gravity.
This is 5th grade btw
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Nancy observed that her plant reproduced when she cut off a leaf and planted it. Over time, the leaf grew into a full-grown plant. How is this offspring plant different from a plant that reproduces when one plant pollinates another? Explain your answer.
Answer:
The first plant grew from a seed as is, therefore, a "full plant" but the second one is not a "full plant" because it was a part of another so it will probably be weaker than the original.
Explanation:
What two things define an object's velocity? (Select two answers) this is 5th grade btw
1. acceleration
2. direction
3. weight
4. speed
Answer: speed and direction
Explanation: Velocity is a vector quantity, so it will have both speed and direction. So, the answer will be answers 2 and 4
In your own words, explain what the geosphere is.
Answer:
one of the shells or spherical layers within the earth delimited above and below by discontinuities
Explanation:
Hope this helps :)
pls make brainliest :p
.
Which of the following is a function of the skeleton?
Answer:
C
protecting internal organs
