Please help with !!!!!!!!

Answer:

The density of the iron is: 15.74g/cm3

Explanation:

-To determine the density of something, you have to divide the mass and the vol.

-mass/volume = density or, m/v = d

-The mass of the iron is: 78.7 grams

-The volume of the iron is 5mL

In order to find the density, you have to divide:

m/v = d

78.7g ÷ 5mL = 15.74

Hope This Helps (:

Answer:

I think its By sound waves..

Answer:

why is this still up 2 years later

Explanation:

Answer:

A compound is a molecule made of atoms from different elements

Explanation:

All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms.

Answer:

C. Increasing the height will give the ball more energy and will increase the number of times it bounces.

Explanation:

Answer:

Sorry i cant see this question

Explanation:

Sorry

Answer:

The energy of a wave is transferred to the material it encounters. Ex.) When the ocean waves meet the shoreline, most of their energy is absorbed by the shore.

Explanation:

Ex.) When the ocean waves meet the shoreline, most of their energy is absorbed by the shore.

Wave absorption takes place when a wave transfers its energy to the atoms and molecules of the medium it comes in contact with.

When a wave is absorbed, matter absorbs energy from the wave, lowering its amplitude. When a sound wave strikes foam padding, for example, the energy passes through the material and is sometimes converted into heat or other forms of energy.

The energy of a wave is transferred to the particles in the surface when it is absorbed by a surface. This usually causes the particles' internal energy to increase.

Some wavelengths or colors of light are absorbed when white light shines on an opaque object.

Thus, Wave absorption takes place when a wave transfers its energy to the atoms and molecules of the medium it comes in contact with.

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Answer:

Mechanical energy

Explanation:

Answer: An outcome variable is a variable that is the final or missing variable in an experiment and a test variable is a variable that is being tested to find the final variable or missing variable (The outcome)

Explanation:

Answer:

number (12 is c)  (13 is 5) (14 is 5)

Explanation:

Answer:

12:B 13: 5 m/s 14: 5 m/s

Explanation:

12: this is a position vs time graph, and that worded description matches the graph because the slope of a p vs t graph is the velocity

13: again, the slope of a position vs time graph is the velocity. 10m/2s = 5 meters a second or m/s

14: same thing. the object travels 30 m in 6 s so 30/6=5 m/s

Answer: Elements or compounds that enter are Reactants.

The substances that are formed are the Products

Reactants in C6H12O6 + 602 ---> 6CO2 + 6H2O are  C₆H₁₂O₆ + 6 O₂

Reactants in 6 CO2 + 6H2O --->C6H12O6 + 602 are    6 CO₂ + 6 H₂O

Reactants in 2 H2 +O2 ---> 2 H2O  are  2 H₂ +O₂

Reactants in 2 H2O ---> 2 H2 + O2  are  2 H₂O

Explanation:

The number of atoms in the reactants have to balance with the number of atoms in the products.

The first two examples given are for metabolism of carbohydrates (similar to combustion of hydrocarbons) and photosynthesis.

Answer:

I = road salt

D= cars

I = fertilizers

D= rose bushes

I = salt levels

D = blood pressure

I = light levels

D= bird migration

I = artificial sweetners

D = blood pressure

Explanation:

independent variable is the one that is changed.

Dependent variable is the one that has to stay constant.

Answer:

its b watch

Explanation:

They already know the distance if they know the time then they can find their speed. For example Mph is miles per HOUR therefore all they need is distance and time

Answer:

The lungs' main role is to bring in air from the atmosphere and pass oxygen into the bloodstream. From there, it circulates to the rest of the body. Help is required from structures outside of the lungs in order to breath

Explanation:

Explanation: The lungs are the most important part of the respiratory system. They give air to serve the whole entire body. Lungs are one of the most vital organs of the body, since they help us breathe, and if we did not breathe, we would die.

Hope this helps you!

Answer: crest I don’t really know how to explain it but yea it’s crest

Answer:

for what nothing is heree??????????? <3

Explanation:

Answer:

A) Lamp:Trampoline

Answer:

Every spacefaring country.

Explanation:

Space junk is no one countries' responsibility, but the responsibility of every spacefaring country. The problem of managing space debris is both an international challenge and an opportunity to preserve the space environment for future space exploration missions.

Hope this helps

Taken from google :/

Answer:

BRUHHHHH IMA BE IN MEXICO BUT SINCE THEY DONT CELEBRATE AND ONLY CELEBRATE NOVEMBER 1-2 I AM MAKING CANDY BAGS FOR THEM ON HOLLOWEEEN YAEEETTT BUT IMA TRY TO DO CLOWWWWNNNN MAKEUPPPP

Explanation:

AHHHHHHHHHHHHHHHHHHHHHHHHHHHH

Answer: most molecular compounds poor conductors because they do not have charged particles to carry current.

Explanation:

Explanation:

Usually it's being afraid of getting rejected but your just afraid of being yourself

Answer:

im not afraid

Explanation:

Answer:

Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are found outside the nucleus. Because opposite electric charges attract each other, negative electrons are attracted to the positive nucleus.

Explanation:

Answer:v yes byes vI vto

Explanation:

Rn hh b

Answer:prevention of water loss would be unnecessary

Explanation:

edge 2021

Cuticles are protective lining in the epidermal layer of plants. Cuticles helps to reduce water loss and protect the plants from environmental stresses.

Cuticle is an organism's external layer or area that makes touch with the environment. The epidermis secretes the dead, noncellular cuticle in many invertebrate species. In humans, the cuticle is the epidermis, and this layer may include colours and chitin, similar to arthropods.

The cuticle is a protective coating that protects the epidermal cells of leaves and other organs while preventing water loss in some higher plants.

It is made up of cutin, a waxy, water-repellent compound related to suberin that is present in the corky tissue's cell walls. Hence, option c is correct.

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The athlete must jog for approximately 1.7479 × 10² minutes to complete a distance of 42.19 km at an average speed of 9.00 mph.

To find the time the athlete must jog, we'll first convert the distance from kilometers to miles, then use the formula:

Time (in hours) = Distance ÷ Speed

1 kilometer is approximately 0.621371 miles.

So, the distance in miles is:

42.19 km × 0.621371 miles/km ≈ 26.21875 miles

Now, we can find the time in hours:

Time (in hours) = 26.21875 miles ÷ 9.00 mph ≈ 2.9131944 hours

To convert hours to minutes, multiply by 60:

Time (in minutes) ≈ 2.9131944 hours × 60 min/hour ≈ 174.79167 minutes

Now, let's round this to two decimal places and express the result in scientific notation:

Time (in minutes) ≈ 174.79 minutes

To write it in the requested form (using scientific notation), we move the decimal point two places to the right:

Time (in minutes) ≈ 1.7479 × 10 minutes

So, the athlete must jog for approximately 1.7479 × 10² minutes to complete a distance of 42.19 km at an average speed of 9.00 mph.

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Answer:

No because there is not enough Potential Energy at Point 1 to make it all the way through point 5.

Explanation:

Answer:

So first its common sense lol. So of course it would be enough Potential energy to go up excample like a bow-n-Arrow it goess up then down because of Gravity!!!!

Hope this hellped even though someone else said the same answer XD

Answer:

Increasing the height will give the ball more energy and will increase the number of times it bounces.