Chanice drives her scooter 7 kilometers north she stops for lunch and then drives 5 kilometers east what distance did she cover?? What was her displacement
Answer:
Total distance of covered by Chanice is 12 km
8.60 km was her displacement in the direction of north-east.
Explanation:
Distance covered by Chanice in north direction = 7 km
Distance covered by Chanice in an east direction = 5 km
Total distance of covered by Chanice = 7 km+ 5 km = 12 km
Displacement is defined as shortest distance from initial point to final point.
In a ΔABC, the displacement of the Chanice = AC
ΔABC, is a right angled triangle.So, by applying Pythagoras theorem we can determine the the length of AC.
[tex]AB^2+BC^2=AC^2[/tex]
[tex](7 km)^2+(5 km)^2=AC^2[/tex]
AC = 8.60 km
8.60 km was her displacement in the direction of north-east.
Final answer:
The distance Chanice covered on her scooter is the sum of her northward and eastward travels, 12 km. Her displacement is the hypotenuse of the right triangle formed by her path, approximately 8.6 km. The magnitude of her displacement is also about 8.6 km.
Explanation:
Chanice drives her scooter 7 kilometers north and then 5 kilometers east. The distance she covered is the total length of her travel path, which is the sum of these two separate distances.
The displacement, however, is the shortest path between her starting and ending points, measured in a straight line. In Chanice's case, we can calculate this by envisioning a right triangle where the legs of the triangle are her northward and eastward paths. The hypotenuse of this triangle will be her displacement. Using the Pythagorean theorem, displacement (Δd) can be calculated as Δd = √(7² + 5²) = √(49 + 25) = √74, which is approximately 8.6 kilometers.
The magnitude of her displacement is the absolute value of her displacement, which is simply the hypotenuse calculated above, about 8.6 kilometers.
Which of these actions is the BEST evidence that waves can cause objects to move?
A.) speed boat races in circles around the lake,B)A teenager swims to shore after an ocean swim.C)A surfer rides back to the beach on his surfboard.D)A dog fetches a ball tossed in a lake and brings it back to the dock.
Answer:
The correct answer is C) A surfer rides back to the beach on his surfboard.
Explanation:
This is the best answer because the other choices involve people moving things or moving themselves in a lake or the ocean. So if we want evidence that waves can cause objects to move, the wave must be the active part. Option C is correct because the surfer is passive. He or she is riding the surfboard but the waves are moving him or her.
How many moles of oxygen are in 5.6 moles of al(oh)3?
In which group do all atoms have seven valence electrons in the ground state?
Group 7A or the 17th column on the periodic table, known as the halogens, contains elements with seven valence electrons. Their electron configuration is ns²np5.
The group in which all atoms have seven valence electrons in the ground state is the halogen group, also known as Group 7A or the 17th column of the periodic table. These elements have the valence shell electron configuration of ns²np5, where n represents the principal quantum number corresponding to the period number of the element in the periodic table. For example, chlorine (Cl) has the electron configuration [Ne] 3s² 3p5, indicating that it has seven valence electrons. This is because the p subshell is being filled with five electrons alongside the two electrons in the s subshell, summing up to seven valence electrons.
How to determine is an alcohol has strong or weak intermolecular forces?
according to Le chateliers principle when a change is introduced into a system in chemical equilibrium the equilibrium shifts.
A) to the forward reaction.
B) to the reverse reaction
C) In the direction that relieves the change
D) in the direction that requires the most energy
What is the range of the numbers of isotopes chemical elements have?
The range of the number of isotopes that chemical elements can have is b
. 3 to 36.
The element with the least (3) number of isotopes is Hydrogen, while the elements with the most number (36) of possible isotopes are Xenon and Cesium.
Isotopes are different forms of the same element, in which the number of protons in the nucleus of the atom is the same for the different forms, but the number of neutrons in the nucleus is different. Isotopes are atoms with the same number of protons but different numbers of neutrons. The range of isotopes for chemical elements varies, with some elements having multiple isotopes. Isotope stability can vary among different isotopes of an element.Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons, leading to different mass numbers. The range of isotopes for chemical elements can vary significantly. For instance, thallium has 25 isotopes with atomic masses ranging from 184 to 210.The stability of isotopes differs, with some being more stable than others.
Correct question is: What is the range of the numbers of isotopes chemical elements have?
a. 4 to 45
b. 3 to 36
c. 2 to 34
d. 5 to 12
How many grams of sodium iodide, nai, must be used to produce 97.1 g of iodine, i2?
Oxides of most nonmetals combine with water to form __________. oxides of most nonmetals combine with water to form __________. a base water hydrogen gas water and a salt an acid
What intermolecular forces occur between two methane molecules?
Water has one of the largest specific heats of any substance why is this important
Which of the following depends on an object's displacement not distance from the starting point?
Question 2 options:
Velocity
Acceleration
Displacement
Speed
Answer: The velocity of an object depends on an object's displacement.
Explanation:
Velocity is defined as displacement of an object with respect to time.
It is a vector quantity measured in meter per second or m/s.
Mathematically
[tex]v=\frac{displacement}{\text{time taken}}[/tex] or [tex]v=\frac{dx}{dt}[/tex]
Barium ions carry a 2+ charge, and nitrogen ions carry a 3-charge. what would be the chemical formula for the ionic compound barium nitride?
Which of the following units is not a fundamental unit?
A) Gram
B) Kilogram
C) Meter
D) Second
The one that is not a fundamental unit is gram. The correct option is A.
What are fundamental units?The basic units are those defined by the International System of Units. Because these units are not derived from any other unit, they are referred to as fundamental units.
The seven fundamental units are as follows: meter (m) for length. Time is measured in seconds (s).
A base unit is a unit of measurement used to measure a fundamental quantity.
A base quantity is one of a conventionally chosen subset of physical quantities in which none of the quantities can be expressed in terms of the others.
The fundamental units of electric current, length, and temperature are ampere (A), meter (m), and Kelvin (K), respectively.
The kilogram (kg) is the fundamental unit of measurement for mass. The gram (gm) is not a fundamental unit of measurement.
Thus, the correct option is A.
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Calculate the standard entropy change for the dimerization of no2: 2 no2(g) → n2o4(g) at 298 k, if s ◦ ∆h◦ f j k·mol kj mol no2(g) 240.06 33.18 n2o4(g) 304.29 9.16 answer in units of j k · mol
The standard entropy change for the dimerization of NO2 at a temperature of 298 K is calculated to be -175.83 J/K·mol.
Explanation:The probability of Type I error is denoted by alpha (α), and in hypothesis testing, we typically set a predetermined level of significance (α), which is the maximum allowable probability of making a Type I error.This incorrect rejection is often influenced by the level of significance used in the test. The likelihood of a Type I error occurring is often denoted by the Greek letter alpha, α. The lower the value of α, the less likely you are to make a Type I error.The standard entropy change for the dimerization of NO2 can be calculated using the equation: ΔS° = ΣS°(products) - ΣS°(reactants). The standard entropy (ΔS°) values for the reactants and products are given as follows: for NO2(g), S° = 240.06 J/K·mol; and for N2O4(g), S° = 304.29 J/K·mol. Therefore, the standard entropy change for the dimerization of NO2 at 298 K becomes:ΔS° = [1 x S°(N2O4)] - [2 x S°(NO2)] = [1 x 304.29 J/K·mol] - [2 x 240.06 J/K·mol] = -175.83 J/K·mol. The probability of Type I error is denoted by alpha (α), and in hypothesis testing, we typically set a predetermined level of significance (α), which is the maximum allowable probability of making a Type I error.This incorrect rejection is often influenced by the level of significance used in the test. The likelihood of a Type I error occurring is often denoted by the Greek letter alpha, α. The lower the value of α, the less likely you are to make a Type I error.
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What is 13,040,000 in scientific notation?
Answer:
[tex]1.304*10^{7}[/tex]
Explanation:
Hello! Let's solve this!
To write a number in scientific notation we have to put a number between 0 and 9 in front of the point. Count the number of places the point is run. If you run to the right, the exponent is negative and if you run to the left, the exponent is positive.
In this case the number is 13,040,000
We run point 7 places to the left so the exponent is positive.
[tex]1.304*10^{7}[/tex]
1.3×10⁷ is the scientific notation for the number 13,040,000. This can be done by moving decimal to the first non zero digit.
When a number is too big or too tiny to be readily stated in decimal form, or if doing so would involve writing down an exceptionally lengthy string of digits, it can be expressed using scientific notation. It is also known as standard form within the UK and scientific form, standard index form, and standard form. Scientists, mathematicians, as well as engineers frequently utilise this base ten notation because it may make some mathematical operations simpler. It is typically referred to as "SCI" display mode on scientific calculators. 1.3×10⁷ is the scientific notation for the number 13,040,000.
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Mass=35g
Density=5g/cm3
What is the volume?
The volume of an object with a mass of 35g and a density of 5g/cm3 is 7 cm3.
Explanation:The subject of this question falls under Physics, specifically the topic of density and volume. The formula to calculate volume when you have mass and density is: Volume = Mass / Density. In this case, you are given a mass of 35g and a density of 5g/cm3. Plugging these values into the formula gives you: Volume = 35g / 5g/cm3 = 7 cm3. Therefore, the volume of the object is 7cm3.
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For which atom is it difficult to predict the most probable ionic charge using the periodic table?
The atom for which the prediction of ionic charge has been difficult based on the periodic table is Cobalt.
The ionic charge has been imposed on the atom when there has been a loss or gain of an electron, in order to achieve the stable electronic configuration. The elements on the loss of electron have attained a +ve charge, while the gain of an electron by an atom gives it a -ve charge.
The elements in the periodic table have an oxidation state for the ionic form of the elements. The varying oxidation state element has been able to attain a varying ionic state. Cobalt has been present with varying oxidation states, thus it has been difficult to predict the ionic charge of Cobalt using the periodic table.
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More than two-thirds of the elements of the periodic table are classified as
Answer:
More than two-thirds of the elements of the periodic table are classified as Metals
Explanation:
Metals are the most abundant elements of the Periodic Table and of the earth's crust: of the 118 known, 25 are non-metallic.
Metals are characterized by being good thermal and electrical conductors and having high densities. They are generally solid at room temperature (with the exception of mercury). In addition, almost all reflect the light, obtaining a very characteristic brightness.
As mentioned, metals have among their main characteristics the possibility of being good conductors of electricity because they oppose low resistance, therefore, the electric charge can easily pass through these elements. They are also excellent heat conductors because they oppose poor resistance to high temperatures.
The metals have the malleability property, this allows their forms to be modified through the application of a continuous pressure force or after a casting process.
They also have ductility as their characteristic property, this is the possibility of molding metals into thin wires or resistant wires.
Metals are also characterized by their high tenacity, that is, by being highly resistant throughout the deformation processes before they break. The tenacity of metals is due to the strong union of their molecules.
Metal elements are classified into different types:
Alkali metals. Alkaline earth metals. Transition metals: Most metals are transitional. Lanthanides: Called lantanoids or "Rare earths", they form the "elements of internal transition" next to actinides. Actinides: Metals of high atomic numbers. Transactinides: These are "super heavy" metals, which outnumber the heaviest of actinides: lawrencio (103).Which of the following is not true of a pseudoscience? (1 point) It does not follow the scientific method. It is not proven reliable through experimentation. It is a practice or belief that claims to be science. It is a science that is controversial or unproven.
Answer: It is a science that is controversial or unproven.
Explanation:
Pseudoscience can be based upon the belief, statements or practices that are claimed to be factual as well as scientific but actually not. As it is not proved by the scientific experimental procedures. Hence, it cannot be considered as scientific but can become controversial and unproven as it lack evidences.
When calcium (ca) bonds with oxygen, it gives up two electrons. what is the charge of the ca ion in this compound?
Explanation:
Atomic number of calcium is 20 and its electronic distribution is 2, 8, 8, 2. Hence, to attain stability it will readily lose its valence electrons.
Hence, neutral Ca atom will change into [tex]Ca^{2+}[/tex] ion.
Whereas atomic number of oxygen is 8 and its electronic distribution is 2, 6. Hence, to attain stability it will needs to gain two electrons.
Hence, neutral O atom will change into [tex]O^{2-}[/tex] ion.
Therefore, when both calcium and oxygen atoms will chemically combine with each other then according to cross multiplication same charges will be cancelled out resulting in the formation of calcium oxide (CaO) compound.
Thus, we can conclude that charge on calcium in this compound is +2.
What is the name of the compound cs (mno4)2
a. Cadmium manganate
B. Cadmium manganate
C. Cadmium manganate
D. Cadmium permangantie
The name of the compound Cs(MnO4)2 is Cesium Permanganate.
Explanation:The compound Cs(MnO4)2 is correctly named as Cesium Permanganate. In this compound, Cs represents the element Cesium and MnO4 represents the polyatomic ion called Permanganate. The suffix -ate typically denotes ions that include oxygen
The compound Cs(MnO4)2 is called cesium permanganate.
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The process of removing an electron from a stable nucleus is known as
What three elements are present in monosaccharides?
AB + C → AC + B is the general equation for which one of the following types of chemical reactions?
What does ph measure? the concentration of oxygen atoms in solution the total number of acid molecules in solution the concentration of hydrogen ions in solution the total number of base molecules in solution brainly?
Answer:
the concentration of hydrogen ions in solution
Explanation:
pH stands for potenz of hydrogen.
pH is measure of hydrogen ion concentration.
pH is calculated as :
pH = -log[H⁺]
where [H⁺] is concentration of hydrogen ions.
Thus pH is measure of hydrogen ions concentration.
the other statements are wrong
i) total concentration of oxygen is not related to pH measure.
ii) total number of acid molecules is also not direct measure of pH.
iii) total number of base molecules cannot be measure of pH.
_____ is a mixture of dead organic material that can be used as fertilizer
The answer is compost. It is an organic matter that has been disintegrated and cast-off as fertilizer and soil alteration. This is a significant component in organic farming. The procedure of composting necessitates creating a mound of wet organic substance identified as green wastes – these are leaves, food waste and waiting for the resources to collapse into humus after weeks or months.
Identify the subshell corresponding to the lowest energy peak in the photoelectron spectrum (pes) of sulfur.
What is material that will sink in Liquid water @ 4c
A. Aluminum
B. Corn oil
C. Ice
D gasoline
Toy balloons are filled with hydrogen gas, at standard temperature, from a 10.0-liter cylinder. the initial pressure of the gas in the cylinder is exactly 100 atm. assuming each balloon is filled to a volume of 1.0 liter at standard pressure, how many balloons could be filled?