5 seconds is the additional time.
Describe acceleration using an example.It is possible for an object's velocity to alter by increasing, decreasing, or changing its direction of motion. A few instances of acceleration include an apple falling to the ground, the moon orbiting the earth, and a car coming to a stop at a set of traffic lights.How is acceleration measured?A metre per second (m/s2) is used to measure acceleration. The newton is the unit of force responsible for producing an acceleration of one meter per second per second when applied to a mass of one kilogram.learn more about acceleration here
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Can you physically touch a person without that person touching you with the same amount of force?.
Answer: no
Explanation: every action has an equal and opposite reaction
How far from a 1.00 uc point charge will the potential be 100 v? at what distance ;will it be 2.00 x 10^2
The charge will the potential be 100 V = 1.112 x10⁻¹² C
distance is 4.994 × 10⁻⁵m
v = 100V
K = 8.988 x 10⁹ NM²/C²
r = 1.00 μC
charge may be defined as physical quantity which experience force when placed in an electromagnetic field.
It is measured in coulomb (C)
It is represented by the symbol q.
The formula to find how far from a 1.00 μC point charge will the potential be 100V.
V = kq / r ........1
q = rV/ K
Where
V = Electric potential
q = charge
r = distance
k = Coulomb's constant.
Charge = (1.00 x 10⁻⁶m)(100)/ 8.988 x 10⁹ NM²/C²
q = 1.112 x10⁻¹² C
So, The charge will the potential be 100 V = q = 1.112x 10⁻¹² C
distance at which it will be 2.00 x 10^2 is given by
using equation 1
V = kq / r
r = kq/V
using above values we have
r =8.988 x 10⁹ NM²/C² x 1.112x 10⁻¹² C /2.00 x 10²
r = 4.994 × 10⁻⁵m
distance is 4.994 × 10⁻⁵m
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Write a difference quotient that best approximates the instantaneous rate of change of g at x=4.5.
The difference quotient that best approximates the instantaneous rate of change is 1.
What do you mean average rate of change?Average rate of change is rate at which one value within a function changes in relationship to another. The average rate of change is usually used to determine slope of a graphed function.
Let's explore how to find average rate of change and use linear and nonlinear functions to demonstrate it.
The average rate of change the formula is used to find the slope of a graphed function. To find average rate of change, divide the change in y-values by the change in x-values.
Finding average rate of change is particularly useful for determining changes in measurable values like average speed or average velocity.
We can define average rate of change of a function f(x) in interval [a, b] as:
[tex]r=\frac{f_{b}-f_{a} }{b-a}[/tex]
Particularly, if we want to find an approximation of rate of change for a particular value x', we can choose:
a < x' < b
Such that a and b are close to x'.
Then if we want to find the instantaneous rate of change of g at x = 0, we need to find the values of a and b really close to zero.
Looking at the table, we can choose:
a = -0.001
b = 0.001
(are two closer ones to zero)
Then rate of the change can be written as:
[tex]f(x)=\frac{g(0.001)-g(-0.001)}{0.001-(-0.001)}=\frac{2.001-1.999}{0.002}=1[/tex]
From that, we can conclude that a good approximation of instantaneous rate of change is 1.
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The motion of the rocket labeled a is an example of motion with uniform (i.e., constant) __________. and nonzero
a. acceleration
b. velocity
c. position
d. time
The motion of the rocket labeled a is an example of motion with uniform (i.e., constant) velocity and non- zero acceleration.
A body when covers an equal distance with an equal interval of time, this condition of the velocity is known as uniform velocity. Or, we can say that when the direction and magnitude of speed of a body do not change with time, then the body is said to be at uniform velocity.
Having a non-zero acceleration means having any amount of acceleration whatsoever. This could be either positive acceleration or negative acceleration (a.k.a. deceleration).
An object experiences a non-zero acceleration when it is speeding up, slowing down, or remaining at the same speed while changing direction. Any of these three scenarios would result in an object's velocity changing since velocity is the change in an object's position over time, and a change in velocity means the object is experiencing acceleration.
Conversely, an object has zero acceleration when it either remains stationary or moving at a constant speed in a straight line. In both of these scenarios, the velocity of the object is constant, so there is no acceleration.
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Approximately how many women in the sample have a body temperature lower than 98 degrees fahrenheit?
In the sample, 15 women have body temperatures that are lesser than 98 degrees Fahrenheit.
The correct option is D.
What is Graph?In mathematics, and much more specifically through the graph theory, a chart is a structure that essentially consists of a set of objects, some of which are paired together to form "related" objects. The related pairs of vertices are known as edges, and the objects are equivalent to mathematical abstractions known as vertices.
What purposes does a graph serve?Graphs are frequently used to visually represent data relationships. Data that are too numerous or complex to be adequately described in the text and in a smaller amount of space are presented using graphs.
What do graph types mean?Graphs come in a variety of shapes and sizes, including connected and disconnected graphs, bipartite graphs, weighted graphs, directed and undirected graphs, and simple graphs.
According to the given information:As we can see in the graph:
In class limit 96-97 = 3
In class limit 97-98 = 12
Therefore, 3+12 = 15
Approximately 15 women.
In the sample, 15 women have body temperatures that are lesser than 98 degrees Fahrenheit.
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I understand that the question you are looking for is:
This histogram shows body temperatures, in degrees Fahrenheit, for 65 healthy adult women. frequency 40 97 98 99 temperature 100 101 Approximately how many women in the sample have a body temperature lower than 98 degrees Fahrenheit?
A. 45
B. 50
C. 20
D. 15
How deep under the surface of a lake would the pressure be double that at the surface?
Answer:
approx 33 ft
Explanation:
One atmosphere of pressure is added per 33 ft of depth
Elemental phosphorus occurs as tetratomic molecules, p4. what mass (kg) of chlorine gas is needed to react completely with 356 g of phosphorous to form phosphorus pentachloride?
The Mass of chlorine gas is [tex]2.60[/tex] × [tex]10^{3}[/tex] [tex]g Cl_{2}[/tex]
Mass of [tex]P_{4}=455 g[/tex]
Phosphorus and Chlorine gas are the reactants.
Phosphorus pentachloride is the product.
[tex]_P_{4}(S)+_Cl_{2}(g) ------- > _PCl_{5}(S)[/tex]
Place 1,10 and 4 as the coefficients of [tex]P_{4} ,Cl_{2} ,[/tex] and [tex]PCl_{5}[/tex]
[tex]_P_{4}(S)+10Cl_{2}(g) ------- > 4PCl_{5}(S)[/tex]
Multiply the calculated number of moles of [tex]Cl_{2}[/tex] by its molar mass. The molar mass of [tex]Cl_{2}[/tex] is 70.90 g/mol.
Mass of [tex]Cl_{2}[/tex] needed = 36.7232 mol [tex]Cl_{2}[/tex] × [tex]\frac{70.90 g Cl2}{1 mol Cl2}[/tex] = [tex]2.60[/tex]×[tex]10^{3}[/tex] [tex]g Cl_{2}[/tex]
What is elemental phosphorus used for?Fertilizers are the principal application for phosphorus, which is used in the form of concentrated phosphoric acid. Additionally, insecticides, detergents, plasticizers, and baking powder all contain phosphorus-based chemicals.
Phosphate is a key component of fertilisers and supports high crop yields. It is essential to the entire agriculture sector and cannot be easily replaced. Phosphate rock mining, however, is occurring at an unsustainable rate. By utilising microorganisms to precipitate the phosphorus, some researchers are attempting to recover phosphorus from wastewaters.
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A 4kg block moving right at 6 m/s collides elastically with a 2kg block moving right at 3 m/s find their final velocity
The final velocity of block 1 is 2.2m/s and the final velocity of block 2 is 3.4m/s.
What do you mean by elastically?Although the terms scalability and elasticity are occasionally used interchangeably, scalability is more commonly used to describe a system's ability to successfully handle an increasing workload, while elasticity implies that the system is also capable of rapidly expanding or decreasing capacity and services. The capacity of an IT environment to grow and shrink in response to business requirements is one of its characteristics. Physics defines resilience as a material's ability to absorb energy and react elastically in order to maintain its integrity and avoid deforming as a result of the pressures it is subjected to.
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A record is declared as follows: the first letter in the first name is stored in location 1000. each letter takes one location and an integer takes two locations. what is the address of last[2]?
1012, a record is declared as follows: the first letter in the first name is stored in location 1000. Each letter takes one location and an integer takes two locations.
Multiplication and Division of Integers: the merchandise of a positive integer and a negative integer is negative: the merchandise of two positive integers is positive. The product of two negative integers is positive.
They are important because they assist to facilitate certain calculations by including integer negative numbers. In addition, they also include all negative and positive numbers without a percentage point.
The whole numbers are real numbers that don't have fractions, decimals, and negative numbers. It's neither positive integer nor negative. Zero obeys the rule of whole numbers. Positive numbers are greater than 0 and located to the proper of 0 on the variety line.
Negative numbers are but 0 and located to the left of 0 on the variety line. The quantity zero is neither positive nor negative. Zero is neither positive nor negative. It's the sole number with such characteristics.
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Which of the following are examples of lowering unwanted friction? (SELECT ALL THAT APPLY)
A Nonstick coatings on cooking pans.
B
Putting salt or sand on icy roads.
c The holes in an air hockey table causing the puck to slide around.
D Putting chalk on your hands
before mountain climbing.
A Nonstick coatings on cooking pans.
B. Putting salt or sand on icy roads.
D Putting chalk on your hands before mountain climbing.
are examples of lowering unwanted friction
How can the friction between two surfaces be reduced?We may greatly reduce friction by polishing surfaces or by using a lot of lubricants like oil, water, or grease, but we cannot completely eliminate friction.
Nowadays, low friction coatings are a common form of industrial coating. Because of their low coefficient of friction, these coatings are given this moniker. Low coefficient of friction coatings come in a variety of forms, including PTFE, tungsten disulfide, molybdenum disulfide, etc.
A low coefficient of friction value means that less effort is needed to cause sliding than would be needed if the coefficient of friction were to be high.
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35. Vector A has a negative x component 3.00 units in
M length and a positive y component 2.00 units in length.
According to the given statement the value of :
a - [tex]\overrightarrow{\mathrm{A}}=\mathrm{A}_{\mathrm{x}} \hat{\mathrm{i}}+\mathrm{A}_{\mathrm{y}} \hat{\mathrm{j}}=-3.00 \hat{\mathrm{i}}+2.00 \hat{\mathrm{j}}[/tex]
b - θ is in the second quadrant so θ = 180⁰ + (-33.7⁰) = 146⁰
c-[tex]\overrightarrow{\mathrm{B}}=3.00 \hat{\mathrm{i}}+6.00 \hat{\mathrm{j}}[/tex]
What purposes do vector?In science, anything that has both a direction and a magnitude is referred to as a vector. They are typically represented by pointing arrows, the length of which denotes the size of the vector.
Briefing:The component description of A is just restated to constitute the answer to part (a):
A[tex]_x[/tex] = -3.00 , A[tex]_y[/tex] = 2.00
(a) [tex]\overrightarrow{\mathrm{A}}=\mathrm{A}_{\mathrm{x}} \hat{\mathrm{i}}+\mathrm{A}_{\mathrm{y}} \hat{\mathrm{j}}=-3.00 \hat{\mathrm{i}}+2.00 \hat{\mathrm{j}}[/tex]
(b) [tex]|\overrightarrow{\mathrm{A}}|[/tex] = √(A[tex]_z[/tex]² + A[tex]_y[/tex]²) = √( (-3.00)² + (2.00)²) = 3.61
θ = tan -1 [tex]\left(\frac{\mathrm{A}_{\mathrm{y}}}{\mathrm{A}_{\mathrm{x}}}\right)[/tex] = tan-1 [tex]\left(\frac{2.00}{-3.00}\right)[/tex] = -33.7⁰
θ is in the second quadrant so θ = 180⁰ + (-33.7⁰) = 146⁰
(c) R[tex]_x[/tex] = 0, R[tex]_y[/tex] = -4.00 and [tex]\overrightarrow{\mathrm{R}}=\overrightarrow{\mathrm{A}}+\overrightarrow{\mathrm{B}}[/tex] thus [tex]\overrightarrow{\mathrm{B}}=\overrightarrow{\mathrm{R}}-\overrightarrow{\mathrm{A}}[/tex] and
B[tex]_x[/tex] = R[tex]_x[/tex] -A[tex]_x[/tex] = 0-(-3.00) = 3.00,
B[tex]_y[/tex] = R[tex]_y[/tex] - A[tex]_y[/tex] = -4.00-2.00= -6.00
therefore [tex]\overrightarrow{\mathrm{B}}=3.00 \hat{i}+6.00 \hat{j}[/tex].
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The complete question is -
Vector A has a negative x component 3.00 units in length and a positive y component 2.00 units in length. (a) Determine an expression for A in unit-vector notation. (b) Determine the magnitude and direction of A. (c) What vector B when added to A gives a resultant vector with no x component and a negative y component 4.00 units in length.
Which has the highest heat capacity? (values of heat capacities and calculations are unnecessary).
Water has the maximum specific heat capacity of any fluid.
The amount of heat that one gram of a material needs either absorb or lose in order to alter its temperature by a degree Celsius is known as specific heat. This equates to one caloric, or 4.184 Joules, for water.
High heat capacity: what is it?Consider the amount of time it takes for a pot to get warm to the touch on the stove as opposed to how long it takes for the water within to warm up. A substance with a high heat capacity may absorb a lot of heat before registering a change in temperature.Why does water have the greatest ability to retain heat?Although the hydrogen bonds in water are much too weak to be compared to intra - molecular bonds like covalently or ionic bonds, they are nevertheless strong enough to require a lot of energy to break. Water boils at 100°C for this reason.
Many people believe hydrogen bonding is the cause of water's high specific heat.
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What is the volume of a gold nugget that weighs 2.20 kg? the density of gold is 19 g/cm3.
According to the calculation the volume of gold = 115.79ml
What is a density unit?density is the mass of the material substance per unit volume. d = M/V, in which d is density, M is weight, and V is volume, is the formula for density.
The formula for calculating density is the weight of such an object multiplied by its volume. The mathematical formula for this is d = m/v, where s t stands for density, m for mass, and v for the volume of the item.
According to the given Data:Mass of gold nugget = 2.20 kg
= 2.20 x 1000
= 2200g
Density of a gold = 19 g/cm^3
= 19 g /mL
Substituting the value in the formula:
Density = Mass / Volume.
volume = mass / density
volume = 2200 g / 19 g/mL
= 115.79ml
According to the calculation the volume of gold = 115.79ml
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What is the term for the specific set of equations that describe motion in terms of acceleration, displacement, time, and velocity?
The specific set of equations that describe motion in terms of acceleration, displacement, time, and velocity are given as,
v = u + at.
v² = u² + 2as.
s = ut + ½at²
where, v is final velocity, u is initial velocity, t is time , s is displacement , a is acceleration. The above equation shows the equations of linear motion .
The acceleration is defined as ,the change in velocity (Δv) over the change in time (Δt), The unit is [tex]m/s^{2}[/tex]
acceleration (a) = Δv/Δt.
The velocity is defined as the rate of change of displacement .The unit is given by m/s.
Δv= Δx/Δt
In the above equation, Δv is change in velocity, Δx & Δt are the change in distance and time respectively.
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A wave has an angular frequency of 127 rad/s and a wavelength of 2.62 m. calculate (a) the angular wave number and (b) the speed of the wave.
The angular wave number and (b) the speed of the wave is 522.66 m/s.
What is angular wave?Precise wavenumber is an amount in hypothetical material science that is characterized as the quantity of radians per unit distance. Precise recurrence is the rakish dislodging of any component of the wave per unit time. Likewise, in wave wording for a sinusoidal wave, the rakish recurrence alludes to the precise dislodging of any component of the wave per unit time. It is addressed by A recurrence is a rate, thus, the elements of this amount are radians per unit time. Precise hubs are level planes (or cones) where the likelihood of finding an electron is zero. This implies we can't at any point track down an electron in a rakish (or some other) hub. While outspread hubs are situated at fixed radii, precise hubs are situated at fixed points.
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Ernest rutherford was a prominent scientist who contributed significantly to the theory of atomic structure. True or false?.
Ernest rutherford was a prominent scientist who contributed significantly to the theory of atomic structure. Yes, the following statement is true.
Ernest Rutherford is considered one of the greatest scientists and experimentalists who worked on the atomic model and is also known for his contribution to nuclear physics.
he discovered that an atom is composed of three fundamental particles i.e. electrons, protons, and neutrons.
Most of the spaces are empty in an atom while its all mass is confined in a dense positively charged area called the nucleus.
Moreover, he also discovered alpha and beta radiations emitting from uranium.
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The assumption that the earth moved about the sun in a circle is known as the ___________ model.
Answer:
heliocentrism, a cosmological model in which the Sun is assumed to lie at or near a central point (e.g., of the solar system or of the universe) while the Earth and other bodies revolve around it.
The full moon is opposite the sun in the sky, and rises as the sun sets. what is the approximate angular separation of the sun and the full moon?
The approximate angular separation of the sun and the full moon is 180°
The full moon is opposite the sun in the sky, and rises as the sun sets is may be understand as ,the Moon can be seen in the day light sky at any phase except for the new moon, when it's invisible to us, and full moon, when it's below the horizon during the day. The crescent through quarter phases are high in the sky during the day, but the daytime gibbous phases can be glimpsed only just before the Sun sets
In the crescent phase, the lit-up part of the Moon increases from 0.1% to 49.9%. is growing, while crescent refers to the curved sickle shape.
The gibbous moon is the phase of moon in that appears more than half lighted but less than full.
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science fiction often uses nautical analogies to describe space travel. if the starship u.s.s. enterprise is traveling at warp factor , what is its speed in knots and in miles per hour?
The speed is obtained as 3.3 * 10^9 miles per hour.
What is the distance in miles per hour?There are several units of speed. Let us recall that speed is the ratio of the distance covered to the time taken. The speed of light is given as 3 * 10^8 m/s.
Now we have the speed as warp 1.71 which corresponds to five times the speed of light.
Thus the speed is 5(3 * 10^8 m/s) = 1.5 * 10^9 m/s
To convert from m/s to miles per hour';
1 meter/second = 2.2 miles per hour
1.5 * 10^9 meter/second= 1.5 * 10^9 meter/second * 2.2 miles per hour/1 meter/second
= 3.3 * 10^9 miles per hour
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what is sound and how does it move through different mediums?
Find the number of outcomes in the complement of the given event. out of 259259 strawberry plants in a field, 142142 are ready for picking.
The number of outcomes in the compliment of the event are 0.54
Concept and calculationNo of strawberry plants in the field = 259259
No of plants that are ready for picking = 142142
so no of outcomes = 142142/ 259259 = 0.54 outcomes
Understanding of probabilityThe area of mathematics that deals with probability is called probability theory.
Probability is a concept that can be interpreted in a variety of ways, but probability theory tackles the idea in a rigorous mathematical way by expressing it through a series of axioms.
Typically, these axioms formalize probability in terms of a probability space, which links a collection of outcomes known as the sample space to a measure taking values between 0 and 1. An event is any defined subset of the sample space.
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Ax a x = 26 m/s2 m / s 2 , ay a y = 10 m/s2 m / s 2 . find the vector's direction.
Given,
[tex]Ax =26 m/s^{2} \\Ay = 10 m/s^{2}[/tex]
As we know that slope of any line passing from (x,y) point has the slope as [tex]\frac{y}{x}[/tex] i.e. Tan [tex]\alpha[/tex]
Vector's Direction can be calculated by [tex]\alpha[/tex] = Tan⁻¹ [tex]\frac{Y}{X}[/tex] ,
where [tex]\alpha[/tex] is the angle with the horizontal X-axis.
therefore,
[tex]\alpha[/tex] = Tan⁻¹ [tex]\frac{10}{26}[/tex]
[tex]\alpha[/tex] = 23.375°
The vector's direction is the angle that the vector makes with the horizontal axis, i.e. with the X-axis. The direction of the vector is given by turning the angle of the vector around its tail to the east counterclockwise.
Therefore, the vector's direction for the given vector is 23.375° from the X-axis i.e. the vector Ax = 26 m/s2, Ay= 10 m/s2 points towards the North-East direction.
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40 POINTS AND RLLY EASY
Which option that best describes the planet Jupiter?
Select one:
a.
-largest and most massive planet in the solar system
- has a huge permanent storm that looks like a red spot in images
- has at least 61 moons orbiting it, some of which are very large
- located closer to the sun than Kuiper Belt
b.
-has highest surface temperature of any planet in the solar system
- roughly the same size as Earth
- has a thick carbon dioxide atmosphere
-orbits the sun
C.
- has landforms made by flowing liquid water
- has many huge on its surface
- gets its red color from iron oxide present in soil and rocks on surface
- reflects light from sun
d. -inside of the planet shrunk, forming large cliffs on the surface
- heavily cratered
- no atmosphere
- has mass
A. Jupiter largest and most massive planet in the solar system
Jupiter has a huge permanent storm that looks like a red spot in images
Jupiter has at least 61 moons orbiting it, some of which are very large
Jupiter located closer to the sun than Kuiper Belt
Which option that best describes the planet Jupiter?Jupiter came on fifth number from the sun and the Jupiter is the massive planet present in our solar system. It contains the big storms like great red spot. The surface of the Jupiter is gas made giant but the surface of the Jupiter is not solid, but it may have a solid inner core about the size of Earth.
The Jupiter contain at least 61 moons which orbiting the Jupiter . The life on the Jupiter is impossible because the Jupiter contain very much pressure, it has volatile surface and the temperature of the Jupiter is very hot than that of the earth.
So we can conclude that option A is the right answer.
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At 1:00 pm a car, traveling at a constant velocity of 98 km/hr toward the west, is 27 km to the west of our school. How far from the school will it be at 3:30 pm?
Answer:
See below
Explanation:
It will be 1 PM distance (27km) + 2 1/2 hrs of 98 km/hr
= 27 + 2 1/2 * 98 = 272 km west of school
One-half second after starting from rest, a freely falling object will have a speed of about:_________
a. 20 m/s.
b. 10 m/s.
c. 5 m/s.
d. 2.5 m/s.
e. none of these
One-half second after starting from rest, a freely falling object will have a speed of about 5 m/s.
What do you mean by falling object?Falling things include goods, tools, garbage, and rubbish that are blown, dropped, or displaced from heights.
Physical science research frequently involves the study of gravity. Of course, what makes things fall is the force of gravity. A force of attraction between two objects is constant. This pulling force is similar to the pull of gravity.
given free fall from rest i.e.
initial velocity u=0 m/s
acceleration a = 10m/s2
time t=0.5 seconds
we know final velocity v = u + at = 0 + (10 *0.5) = 5m/s
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A 3.53-g sample of aluminum completely reacts with oxygen to form 6.67 g of aluminum oxide. find percent composition
The mass percent composition of aluminum is 52.9% in aluminum oxide.
Mass of the aluminum = 3.53 g
Mass of the aluminum oxide = 6.67 g.
The mass percent of a substance is the mass of the substance divided by the mass of the compound into 100.
Aluminum reacts with oxygen to form aluminum oxide.
The overall balanced equation for the reaction is,
[tex]Aluminum + Oxygen→Aluminum \: oxygen[/tex]
[tex]4Al +3O _{2}→2Al _{2}O _{3}[/tex]
The mass percent composition of aluminum in the aluminum oxide is,
[tex]Mass \: percent = \frac{ Mass \: of \: the \: substance}{ Mass \: of \: the \: compound} \times 100 [/tex]
[tex]Mass \: percent = \frac{Mass \: of \: the \: aluminum}{ Mass \: of \: the \: aluminum \: oxide } \times 100[/tex]
[tex]Mass \: percent = \frac{3.53}{6.67 } \times 100 [/tex]
= 52.9 %
Therefore, the mass percent composition of aluminum is 52.9% in aluminum oxide.
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Where would you look to see the new moon, if it were visible, when it starts to rise?
The new moon, if it were visible, when eastern horizon starts at 6 am.
What is meat by eastern horizon?The first bilingual (Chinese and English) community radio show to be broadcast to a local audience in the United Kingdom is called Eastern Horizon. In recent years, it was primarily carried live on Saturdays between midnight and one in the morning on BBC Radio Manchester in Manchester.
The center of the horizon on the front of the planisphere points in the direction of North (0º azimuth). The eastern horizon is on the horizon's right side (90º azimuth), and the western horizon is on the horizon's left (270º azimuth).
The new moon, if it were visible, when eastern horizon starts at 6 am.
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Express the integral as a limit of riemann sums using right endpoints. do not evaluate the limit. 3 6 x2 dx 1 find the width of each subinterval in terms of n.
The integral as a limit of Riemann sums using right endpoints is =lim (n→∞) n ∑i=1[(ln(1+(4+8i/n)2)−sin(4+8i/n))8/n].
Definite integralThe definite integral is defined here in terms of its limit.
So the definite integral goes as follows.
∫f(x)dx= lim(n→∞) n∑i=1 f(xi)Δx.
Where, for each positive integer n, we let Δx=(b−a) /n
And in case of i=1,2, 3..., n, we let xi=a+iΔx.
For Δx
For each n, we get
Δx=(b−a)/n= (12−4)/n=8/n
For xi
Xi = a+iΔx = 4+i8/n=4+8i/n
For f(xi)
∫124 [ln(1+x2) −sin x] dx
=lim (n→∞) n ∑i=1[(ln(1+(4+8i/n)2)−sin(4+8i/n))8/n]
What is integral?The Riemann integral, developed by Bernhard Riemann, was the first exact formulation of the integral of a function over an interval in the field of mathematics known as real analysis.
It was presented to the faculty at the University of Göttingen in 1854, but it wasn’t until 1868 that it was published in a journal.
The Riemann integral can be found using the calculus fundamental theorem for a variety of functions and real-world situations, or it can be roughly approximated using numerical integration.
The Riemann integralThe Riemann integral can be thought of as the limit of a function’s Riemann sums as the finer the partitions are.
The function is referred to as being integrable if the limit exists (or more specifically Riemann-integrable). By making the partition fine enough, the Riemann sum can be brought as close as desired to the Riemann integral.
The mesh of the partitions must, among other things, get smaller and smaller until, at the limit, it is zero.
If this were not the case, then on specific subintervals, we would not be receiving a fair approximation to the function. Actually, this is sufficient to define an integral.
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The wavelength of green light is about 500 nanometers. what is this length in meters?
By conversion unit, the length in meters of green light wavelength is 5 x 10¯⁷ m.
We need to know about a conversion unit to solve this problem. Meter is the SI unit for length but there are other units which able to determine the length such as nanometer. The conversion unit of nanometer to meter is
1 nm = 10¯⁹ m
From the question above, we know that the wavelength of green is 500 nanometers. in a meter, we can write as
500 nm = 500 x 10¯⁹ m
500 nm = 5 x 10¯⁷ m
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The potential at points a and b are: va = -2 v and vb = 6 v. when a 5 c charge is moved from a to b, the change in potential energy of this system is:__________
This system's potential energy changed by 40 J.
Energy = charge * potential difference
=> Energy = (8v)*5
=> Energy = 40 J
Hence the answer is 40 J.
What is potential difference?Potential difference, often known as voltage, is equal to the amount of current times the resistance. One Joule, or one Volt, of energy is required for one Coulomb of charge to flow from one place in a circuit to the another.
What is the formula for the potential difference?V=U q, The change in the potential energy of a charge q transported from point A to point B, divided by the charge, is what is used to determine the electric potential difference between points A and B, or VBVA. The joules per coulomb unit of the potential difference is called the volt (V).
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