If a falling rock undergoes a Δv of 112ms due to an a¯¯¯ of 9.8 m/s2, how long did it fall? A. 6.7 seconds B. 11.4 seconds C. 0.09 seconds D. 9.8 seconds

Answers

Answer 1

Answer:

11.4

Explanation:

You wont fail your quiz .

Answer 2

If a falling rock undergoes a Δv of 112ms due to a speed of 9.8 m/s2, it will take 11.4 seconds to fall.

What is speed?

The speed is the rate of change of position of an object with a given time of interval or per unit time then it is known as speed and it is the ratio of distance traveled to the time taken unit is meter per second.

The speed of an object is 9.8 m/s² distance traveled is 112m/s so the time will be,

                 Speed = distance / time

Substituting the value,

                  Time = distance/ speed

                  Time = 9.8 m/s² / 112m/s

                  Time =  11.4 seconds

Therefore, it will take 11.4 seconds to fall, if a falling rock undergoes a Δv of 112ms due to a speed of 9.8 m/s².

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Related Questions

Dependent variable definition

Answers

Answer:

The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable.

Answer:

variable   whose value depends on that of another Explanation:

1. Put 0.000 034 into scientific notation.

Answers

Answer:

3.4x10 to the power of 5

Explanation:

Answer:

My answer to the question is 3.4×10^-5.

Fill in the blanks below.
1. The equation shows a _________the breaking and forming of chemical bonds that leads to a change in the composition of matter
2. In the equation, CO2 is a________
3. In the equation, C6H1206 is a ___________
4. In O2, the type of bond that holds the two oxygen atoms together is a___________
5. In H2O, the type of bond that holds one of the hydrogen atoms to the oxygen atom is a________
6. The number of oxygen atoms on the left side of the equation is___________ the number of oxygen atoms on the
Chemical equation
right side.
reactant
product
nonpolar
covalent bond
polar
covalent bond
equal to
different from
hydrogen bond

Answers

Answer:

Explanation:

6CO₂ + 6 H₂O ⇄ C₆H₁₂0₆ + 6O₂

This is the chemical equation given .

1. The equation shows a __Chemical equation_______the breaking and forming of chemical bonds that leads to a change in the composition of matter.

2. In the equation, CO₂ is a___reactant_____.

3. In the equation, C₆H₁₂0₆ is a ___product________.

4. In O₂, the type of bond that holds the two oxygen atoms together is a_nonpolar_covalent bond_________.

5. In H₂O, the type of bond that holds one of the hydrogen atoms to the oxygen atom is a__polar_hydrogen bond____.

6. The number of oxygen atoms on the left side of the equation is__equal to_________ the number of oxygen atoms on the right side.

How can a new element be made?

Answers

Answer:

adding or removing protons

Explanation:

Elements are defined by the number of protons they have. If you add or subtract protons then that changes and makes a new element.

Answer:

by changing the number of protons in the nucleus

Which statement best compares and contrasts two physical properties of matter?

Answers

Answer:

Answer would be that boiling points and melting points are similar because they both involve the change in a state of a material, but they are different because boiling point involves a change from a liquid to a gas and melting point involves a change from a solid to a liquid. Boiling and melting are phase changes that can happen to a substance however they differ in the process that happens.

Explanation:

Two physical properties of matter can be best compared as boiling points and melting points are similar because both involve the change in a state of matter. But they are different because melting point involves a change from a solid to a liquid and boiling point involves a change from a liquid to a gas.

What are the boiling point and melting point?

A boiling point of a liquid can be described as the temperature at which the vapour pressure is equal to the atmospheric pressure of the liquid. The liquid is changed into a vapour at this temperature.

With the addition of heat, the liquid will change into vapour without any increase in temperature. The vapour pressure of the gas increases until it is equal to the pressure of the gas surrounding it. Bubbles are formed within the liquid and rise to the surface.

The melting point of a substance can be described as the temperature at which it transforms the state from solid to liquid. At the melting point, the solid phases and liquid phases exist in equilibrium. The melting point depends on pressure and is generally specified at a standard pressure such as 1 atmosphere.

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Your question is incomplete, but most probably complete question was,

Which statement best compares and contrasts two physical properties of matter?

A) Density and solubility are similar because they both involve water, but they are different because density involves dissolving a material and solubility involves floating or sinking a material. Density and solubility are similar because they both involve a material’s mass and volume, but they are different because density involves floating materials and solubility involves sinking materials.

B) Boiling points and melting points are similar because they both involve changing the heat of a material, but they are different because boiling point involves adding heat to a material and melting point involves removing heat from a material. Boiling points and melting points are similar because they both involve the change in a state of a material, but they are different because boiling point involves a change from a liquid to a gas and melting point involves a change from a solid to a liquid.

____is used as anode for prevention of corrosion 1 aluminium 2 magnesium 3 iron

Answers

Answer:

I'm not sure but I think the answer is Cathodic protection.

Why do scientists prefer using the Kelvin Scale of temprature?

Answers

Probably because they think it is more accurate.

Hope it helps.

They believe it’s more accurate.

what is the difference between genetic and other causes of health conditions​

Answers

Answer:

Explanation: The main difference between Genetic and Hereditary Diseases is that genetic disease is a condition which occurs due to an abnormality in the individual’s genome while a hereditary disease is a condition caused by a mutation of a gene which can be characteristically transmitted from one generation to another, also The main difference between these two terms lies in the fact that hereditary diseases have the potential of being carried from one generation to another whereas a genetic disease can either be hereditary or not, but there will always be a mutational change in the genome.

Reaction coordinates represent: A. The balanced equation for a chemical reaction. B. The change in pH for a chemical reaction. C. The potential energy change for a chemical reaction. D. None of the above

Answers

Answer:

C. The potential energy change for a chemical reaction.

Explanation:

The reaction coordinate q illustrates, graphically, the energy changes during exothermic and endothermic reactions. This graphical representation of the energy changes in the course of a chemical reaction is known as reaction coordinates. A reaction coordinate is a graphical sequence of steps by which the reaction progresses from reactants through activated complexes to products. Reaction coordinates explain how far a reaction has proceeded towards the products or from the reactants.

From the images attached below, we can see the reaction coordinates in the reaction profiles.

Neutrons are about the same size as....

Answers

Answer:

proton

Explanation:

if it was not an isotope..

Calculate the mass of a liquid with density of 3.20 g/mL and volume of 15.0 mL.

Answers

Answer:

mass = 48 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

Density = 3.20 g/mL

volume = 15.0 mL

Substitute the values into the above formula and solve for the mass

That's

mass = 3.20 × 15

We have the final answer as

mass = 48 g

Hope this helps you

Differences between non-biodegradable and biodegradable.

Answers

Answer:

(simple differences)Biodegradable substances are those that degrades or break down naturally...

Non-biodegradable substances are those that do not degrades easily...

Answer:

Biodegradable substances are those that degrades or break down naturally

Non-biodegradable substances are those that do not degrades easily

Consider the orbitals shown below

Which of these diagrams correctly shows the electron configuration for the atom with one more electron than the one shown above?​

Answers

Answer:b

Explanation:

The option that correctly shows the electron configuration for the atom with one more electron than the one shown above would be the second diagram.

According to Hund's rule, electrons are distributed into empty orbitals singly before pairing can start.

Following the rule:

diagram 1 is incorrect because the first 3p orbital is already paired while the third one remains empty.diagram 3 is incorrect because the orientation of the electron in the third p orbital is wrongdiagram 4 is incorrect because the first 3p orbital already has 2 electrons (with a disoriented one) while the third 3p orbital remains empty.

The only diagram that follows Hund's rule is diagram 2.

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In a desert ecosystem, coyotes and rattlesnakes both eat the same type of mouse as a primary part of their diets. Recently, coyotes have been hunted and killed by people, decreasing the overall coyote population.

Answers

Answer:

there primary food source will still be the same

Explanation:

they will still ear mice but coyotesmay eat Humans if they are close because once they see humans they think they will be killed its there protectiong

Answer:

D. It will increase because coyotes are the competition.

Explanation:

Because Competition is When 2 organisms fight for the same thing, and sense rattlesnakes are the other competition they will increase because coyotes are being killed.

Which of the following is a true statement? Smashing an object into many pieces changes its chemical composition. Smashing an object into many pieces is a chemical change. Smashing an object into many pieces does not change the object. Smashing an object into many pieces is a physical change.

Answers

Answer:smashing an object into many pieces is a physical change

Explanation:

becauseee i’m not sure i’m getting points

Answer:

smashing an object into many pieces is a physical change

Explanation:

A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it? a V b Na c Mg d Se

Answers

Answer:

B.  Na

Explanation:

To identify an atom, you simply need to look at the number of protons.  This atom has 11 protons.  On the periodic table, you can see that the element with 11 protons is sodium (Na).


A jogger runs 10 km East. She then stops and heads back west for 6 km. What is the jogger's distance? What is the jogger's displacement?

Answers

Answer:

distance is 16m

displacement 4m east

An abandoned Indiana coal mine spoil bank (wastes) contains chunks of pyrite minerals. Under constant erosion and weathering, the pyrites leach large amounts of sulfuric acid (H2SO4). The spoil banks are also mixed with large quantities of basic limestone and clay carbonates. What should occur over time?

Answers

Answer:

The acid will be neutralized overtime

Explanation:

The presence of the pyrites leads to the leaching of large amounts of sulphuric acid, however the basic carbonates neutralizes the acid according to the reaction equation;

CaCO3 + H2SO4 ---> CaSO4 + CO2 + H2O.

This will prevent all the deleterious consequences associated with the leaching of the acid in the abandoned coal mine.

b. What is the mass of a piece of wood that has a volume of
25.3cm® and a density of 0.75g/cm?

Answers

Answer:

Explanation:

[tex]\frac{mass}{volume} =density\\mass=volume \times density=25.3 \times 0.75=18.975 ~gm[/tex]

85g=kg?
Unit conversion.

Answers

Answer:

0.085 kg

Explanation:

1 g=0.001 kg  OR 1 kg=1000 g

 so [tex]\frac{85}{1000}[/tex]=0.085 kg

Which of the following is a lanthanide

A. Gold (Au)
B. Americium (Am)
C. Barium (Ba)
D. Europium (Eu)

Answers

Answer:

Hope it helps.

Explanation:

The lanthanide (/ˈlænθənaɪd/) or lanthanoid (/ˈlænθənɔɪd/) series of chemical elements[1] comprises the 15 metallic chemical elements with atomic numbers 57–71, from lanthanum through lutetium.[2][3][4] These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements.

The informal chemical symbol Ln is used in general discussions of lanthanide chemistry to refer to any lanthanide. All but one of the lanthanides are f-block elements, corresponding to the filling of the 4f electron shell; depending on the source, either lanthanum or lutetium is considered a d-block element, but is included due to its chemical similarities with the other 14.[5] All lanthanide elements form trivalent cations, Ln3+, whose chemistry is largely determined by the ionic radius, which decreases steadily from lanthanum to lutetium.

They are called lanthanides because the elements in the series are chemically similar to lanthanum. Both lanthanum and lutetium have been labeled as group 3 elements, because they have a single valence electron in the 5d shell. However, both elements are often included in discussions of the chemistry of lanthanide elements. Lanthanum is the more often omitted of the two, because its placement as a group 3 element is somewhat more common in texts and for semantic reasons: since "lanthanide" means "like lanthanum", it has been argued that lanthanum cannot logically be a lanthanide, but IUPAC acknowledges its inclusion based on common usage.[6]

In presentations of the periodic table, the lanthanides and the actinides are customarily shown as two additional rows below the main body of the table,[2] with placeholders or else a selected single element of each series (either lanthanum and actinium, or lutetium and lawrencium) shown in a single cell of the main table, between barium and hafnium, and radium and rutherfordium, respectively. This convention is entirely a matter of aesthetics and formatting practicality; a rarely used wide-formatted periodic table inserts the lanthanide and actinide series in their proper places, as parts of the table's sixth and seventh rows (periods).

The 1985 International Union of Pure and Applied Chemistry “Red Book” (p. 45) recommends that "lanthanoid" is used rather than "lanthanide". The ending “-ide” normally indicates a negative ion. However, owing to wide current use, “lanthanide” is still allowed.

Answer:

D. Europium

Explanation:

I got this as a correct answer on apex

what are different type of plastids explain them?​

Answers

Answer:

Explanation:

There are 3 types of plastids :-

1) Chloroplasts:- The green plastids which contain chlorophyll pigments for photosynthesis.

2) Chromoplasts:-The coloured plastids for pigment synthesis and storage.

3) Leucoplasts:- The colourless plastids for monoterpene synthesis found in non- photosynthetic parts of the plants.

They are of three types:-  

a) Amyloplasts- stores starch.

b) Proteinoplasts-  stores proteins.

c) Elaioplasts- stores fats and oils.

The emission spectrum for an element is? Select all that apply

Answers

Answer:  You didn't give anything to select, however, the emission spectrum of a chemical element is frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.

A liquid that can absorb and release huge amounts of heat energy without much change in the overall temperature of the water has what
A Has a high density capacity
B Has a high surface tension capacity
C Has a high specific leat capacity
D Has a high non-polar capacity

Answers

Answer:

Im pretty sure the answers b

Explanation:

Because if its talking about overall tempature the it means ihas tension with high surface.

A small rock with the mass of 6 g is dropped into a graduated cylinder with 20 mL of water. The water rises to 23 mL. What is the density of the rock?

Answers

Answer: The density of the rock is 2g/mL. Hope this helped! :)

Explanation:

V= 3.0mL                                                               D=M/V

M= 6.0g

D=6.0g/3.0mL

D= 2.0g/mL

Which statement best describes a physical property of copper

Answers

Answer:A physical property is one that can be changed without altering the identity of a substance. These set of properties is not concentration dependent. They are used to describe matter. Examples are density, solubility, melting point, color and odor. For this case, the second option seems to fit the description. It can be reshaped by a force.

Explanation:

Point P(-4, 0) lies on the directed line segment AE. The endpoints are A(2,-6)
and E(x, y). What are the coordinates of point E such that AP is 3/4 of the
distance from A to E?

Answers

Answer: (10,-14) I think

Explanation:

2)
A barbecue is being planned for 175 people. The ice cream sandwiches for desert cost $1.68 per dozen. It is
assumed that the average number of sandwiches eaten per person will be 1.25. What will it cost to buy ice cream
sandwiches for the barbecue. Solve the problem by dimensional analysis.

Answers

Hellppp :( no one is helping me I lost 20 point because no one answer :( plssssss

Dimensional analysis is the unitary method that is used to determine the values by multiplication. The cost of the ice cream sandwiches for the barbecue is 367.5 $.

What is dimensional analysis?

Dimensional analysis has been defined in maths, physics, and chemistry to solve the problem by multiplying the given numbers to determine the values of the other data. It uses the base quantities to estimate the derived values.

Given,

Number of people at barbecue = 175

Cost of ice cream sandwiches = $1.68 per dozen

The average number of sandwiches per person = 1.25

The cost to buy ice cream sandwiches for the barbecue is estimated by the dimensional analysis as:

12 ice cream sandwiches = $1.68

1.25 ice cream sandwiches = $2.1

If it costs $2.1 for each person then 175 people costs:

$2.1 × 175 = $367.5

Therefore, it will cost 367.5 $ for the barbecue.

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The nucleus of a helium atom is identical to: A) a gamma particle B) an alpha particle C) a beta particle D) all of the above

Answers

Answer: D. All of the above

Answer:

B. Alpha Particles

Explanation:

P: Have a Nice Day!

List 3 common examples of physical changes

Answers

crushing a can
breaking glass
boiling water

Answer: crushing a can, boiling water, breaking a glass

Explanation:

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