How long will it take a car to go from a complete stop to 44 km/hr if they are accelerating
at 5m/s²?
Answer:
Time taken = 2.444sec
Explanation:
Greetings !
Given values :-
Final velocity (Vf) =44km/hr =12.22m/s Initial velocity (Vi) = 0m/sAcceleration (a)= 5m/s²Required values:-
Time taken (t) =?Solution/ work-out:-
Firstly change the km/hr value to m/s
Then, recall the Velocity-Time Equation:
[tex]vf = vi \: + at[/tex]
substitute known variables into the equation
[tex](12.22) = (0) + (5)t[/tex]
Solve for time
[tex]t = 2.444sec[/tex]
Hope it helps!!
The conventional system of signs that indicate relative durations of long and short sounds is called.
Musical notation is the term used to describe the common system of signs used to denote the relative duration of long and short sounds.
What is a musical notation?Music notation, often known as musical notation, is any technique used to graphically express audibly perceived music performed with instruments or sung by a human voice using written, printed, or other symbol-based representations. This includes notation for periods of silence like rests.
Throughout history, many civilizations have used different types of notation, and the knowledge of early musical notation is generally sparse. Different musical genres and cultural groups employ various methods of music notation, even during the same time period, such as the 2010s. For instance, while sheet music with staves and note-heads is the most popular method for professional classical musicians, the Nashville Number System is the main method used by professional country music session musicians.
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In the absence of air resistance, a ball of mass m is tossed upward to reach a height of 20 m. at the 10 m position, halfway up, the net force on the ball is?
On the ball, there is mg of net force.
How would one describe air resistance?Air exerts a force known as air resistance. The force works in the opposite direction of an object traveling through the air. While a sports vehicle with a streamlined design will encounter reduced air resistance and experience less drag, the automobile will be able to move more quickly than a truck with a flat front.What Causes Air Resistance?Air resistance, also referred to as "drag," is a force brought on by air. When air specks collide with an object's front, it slows down. The more air particles that impact the object and the larger its surface area, the more resistance it faces.
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A fluorescent lamp with a 30 in its nomenclature indicates it produces light with a color temperature of ____ k, which would provide good rendition to warm colors.
Answer:
Fluorescent lamp with a 30 in its nomenclature indicates it produces light with a colour temperature of 3000k
Explanation:
A low-pressure mercury vapor gas discharge lamp called a fluorescent lamp or fluorescent tube employs fluorescence to create visible light. Mercury vapor is excited by an electric current in the gas, which generates short-wave UV rays that causes a phosphor coating on the inside of the lamp to glow. For a fluorescent lamp with 30 in to provide good rendition to warm colour, the colour temperature must be at least up to 3000k. The colour of light emitted by a hypothetical opaque, non-reflective substance at a specific temperature expressed in kelvins is known as colour temperature. Regardless of the temperature of other light sources, the colour of their light is classified using the colour temperature scale.
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What voltage must be applied to an 8.00 nf capacitor to store 0.160 mc of charge?
The voltage that must be applied is 20 KV
Given that,
Capacitance C = 8 nF = 8 * [tex]10^{-9}[/tex] F
Charge Q = 0.16 mC = 0.16 * [tex]10^{-3}[/tex] C
We know that C = Q / V
V = 0.16 * [tex]10^{-3}[/tex] / 8 * [tex]10^{-9}[/tex] = 20 * [tex]10^{3}[/tex] V = 20 KV
Voltage is nothing but an electromotive force.
Therefore, the voltage that must be applied is 20 KV
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Picture attached please help! The tea kettle has the spout closed. When put over heat, the water in the kettle begins to boil. What happens to the steam.
Answer:c
Explanation: the law of conservation of mass states that mass can niether be created nor destroyed and if there is a plug the steam has to go somewhere
Answer:
C. The steam will fill up the container it is in because gas does not have a definite size.
Explanation:
What is the bulk modulus of oxygen if 39.9 g of oxygen occupies 27.9 l and the speed of sound in the oxygen is 342 m/s?
Bulk modulus of Oxygen is 1.44×10^5 Pa
Given:
mass of Oxygen = 39.9 g
volume of Oxygen = 27.9 l
speed of sound in oxygen = 342 m/s
To Find:
Bulk modulus of Oxygen
Solution:
The density of oxygen gas is
ρ = 0.0399/0.0279 = 1.43 kg/m^3
From v = √B/ρ we find
B = v^2ρ
B = (317 m/s)^2 x (1.43 kg/m^3)
B = 1.44×10^5 Pa
Hence, Bulk modulus of Oxygen is 1.44×10^5 Pa
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In a large perfectly quiet room, at what maximum distance could you hear a bee with a power output of 1 nw ? recall that the threshold of hearing is 10−12w/m2
Using threshold intensity, the maximum distance the sound could hear a bee is 8.92 m.
We need to know about intensity to solve this problem. Intensity can be determined as the ratio of power to the area. The magnitude of intensity can be calculated by
I = P / (4πr²)
where I is intensity, P is power and r is distance.
From the question above, we know that
P = 1 nW = 10¯⁹ W
I = 10¯¹² W/m²
By substituting the given parameters, we get
I = P / (4πr²)
10¯¹² = 10¯⁹ / (4πr²)
r² = 79.55
r = √79.55
r = 8.92 m
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A sheet metal screw holding a metal body panel has pierced the insulation of a power wire and is touching the copper strands. this is known as a:_________
A sheet metal screw holding a metal body panel has pierced the insulation of a power wire and is touching the copper strands, this is known as a short to ground.
A substance called insulation is used to block sound and air. Insulation is used in the walls and attic of a home to keep warm air inside and cold air outside during the winter. An example of insulation is fibreglass. noun.
Covering anything in order to prevent heat, sound, or electricity from leaving or entering; also, the state of being covered in this manner: The animal's thick coat serves as excellent insulation from the arctic cold.
Any of the aforementioned alternatives would be safer than insulating your home with small glass shards doused in formaldehyde when compared to fibreglass insulation. However, cellulose is the most secure choice available.
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Amazon delivery boxes are launched from a horizontal conveyor belt moving at a rate of 3 m/s into bins for shipping. If the surface of the conveyor belt is 1.4 m off the ground, what is the range of each Amazon box?
Show some work
The range of each Amazon box that are launched from a horizontal conveyor belt is 1.62 m.
According to equations of motion,
s = ut + 1 / 2 at²
s = Distance
u = Initial velocity
t = Time
a = Acceleration
Since the conveyor belt is at a height of 1.4 m, it has a vertical motion when falling from the conveyer belt.
h = 1 / 2 gt²
1.4 = 1 / 2 * 9.8 * t²
t = √ 0.29
t = 0.54 seconds
The range is the horizontal distance covered,
[tex]d_{x}[/tex] = [tex]V_{x}[/tex] * t
[tex]d_{x}[/tex] = 3 * 0.54
[tex]d_{x}[/tex] = 1.62 m
Therefore, the range of each Amazon box that are launched from a horizontal conveyor belt is 1.62 m.
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The kinetic and potential energy of a harmonic oscillator in motion:_______
a. are time-independent
b. are perfectly correlated
c. are independent
d. are perfectly anticorrelated
The correct option is D.
The Kinetic Energy and The Potential Energy are perfectly anti-correlated.
Kinetic energy and potential energy are two types of energy that are frequently found in mechanical systems and are referred to as mechanical energy in physics. The idea of mechanical energy conservation is based on an even more general principle known as the law of conservation of energy; the main distinction is that in mechanical energy conservation, all the system's energy is either in the form of kinetic energy, potential energy, or both. A restoring force in a harmonic oscillator works in the direction of an equilibrium point. Simple harmonic motion, which we refer to as repeating the motion, is produced by the force. The system's mechanical energy, which includes both potential and kinetic energy, is ideally constant. In actuality, the energy is preserved by allowing one quantity to grow when the other shrinks, and vice versa. An anti-correlation is a term that describes a negative correlation.
To summarize the kinetic energy and potential energy in a harmonic oscillator are perfectly anti-correlated. The correct option is D.
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Suppose you drive through an entrance ramp at a modest speed and your acceleration is 3.0 m/s2. what will be the acceleration if you double your speed?
The acceleration if we double the speed is 27 m/s².
How to find the acceleration if we double the speed?
A centripetal acceleration, or acceleration toward the center of the circle, results from moving in a constant circular motion.
a = v²/r is the formula for calculating an object's circular motion acceleration.
Since the radius never changes, let's set it at 5 m. Using a = 3 m/s² and r = 3m to solve for the velocity, we get the following results:
Were, 3 = v²/3
simplifying the equation, we get
⇒ 9 = v²
⇒ 3 = v
When the circular path has a radius of 3 m and an acceleration of
3 m/s², the velocity is 3 m/s.
Now let's triple the velocity: 3 m/s → 9 m/s.
Let's solve for the acceleration using v = 9 m/s and r = 3 m.
a = (9)²/3
⇒ a = 81/3
⇒ a = 27
If you triple your speed, the acceleration is 27 m/s².
This makes sense because an is precisely proportional to v², which means that if your speed is tripled, your acceleration will increase by a factor of 3², or nine times.
a = 3 [tex]*[/tex] 9 = 27 m/s²
As a side note, doubling your speed would improve the acceleration by a factor of 2² - a 4 times increase.
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The slowly fluctuating harmonic patterns by composer philip glass, used in his quatsi trilogy, represent what musical style?
The slowly fluctuating harmonic patterns by composer philip glass, used in his quatsi trilogy, represent minimalism musical style.
A minimalist, Philip Glass is, was, or never was. He does not appreciate being categorized, like most artists and most individuals. He has long denied being a minimalist, particularly with regard to his work produced after the mid-1970s. The Qatsi Trilogy, directed by Godfrey Reggio, begins with the 1983 release of Koyaanisqatsi. Over the two decades it took to get the movies made, the Qatsi music changed, reflecting the evolution of both Glass's overall style and the films' own, as well as of what quickly developed into a particularly symbiotic collaboration between Glass and Reggio, a composer and a director who seemed destined to work together.Learn more about the music composition with the help of the given link:
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Suppose the link speed between the source and destination is 100 megabits (mb) per second. approximately how long will it take to send a 12 megabyte (mb) file?
Approximately About 1 second will take to send a 12-megabyte (mb) file.
What is link speed?It refers to the fastest rate at which data can travel from a wireless client to a wireless router over a wireless link. At the application layer, user actions like file transfers and web content browsing take place. Compared to the rate at the physical layer, the rate at the application layer will be substantially lower.
What Internet Speed Is Best for Using Several Devices? According to the FCC, the best ISPs for households with two or more connected devices and moderate to heavy internet usage should have download speeds of at least 12 megabits per second (Mbps). It is advised to use 25 Mbps while using four or more devices.
Anywhere from 25 to 100 Mbps is considered to be an excellent internet speed.
Up to 2 devices can stream, browse the web, and check email at speeds of 25 Mbps. A few more individuals can stream in HD or even 4K, stream music, play games, surf social media, and work from home at speeds of 50 to 100 Mbps.
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What is the force required to move a block of mass 150 pound by a distance of 5ft in 8 seconds?
Force required to move a block is 1.615 N
Given:
mass of block = m = 150 pounds = 68 kg
distance = d = 5 ft = 1.52 metres
time = t = 8 sec
To Find:
force required to move the block
Solution: Force is defined as product of mass and acceleration and it's unit is N or Newton.
Velocity = displacement/ time = 1.52 / 8 = 0.19 m/s
Acceleration = velocity/time = 0.19/8 =
0.023 m/s^2
Force = mass x acceleration = 68x0.023 = 1.615 N
Hence, force required to move the block is 1.615 N
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A ball is rolled horizontally off the top of a table. After 3 seconds the ball lands on the ground with a final velocity of −3.5 m/s. Which kinematic equation would be most useful for finding the ball’s initial velocity? (Assume a= −9.8 m/s2)
The following kinematic equation will be most useful for finding the ball’s initial velocity:
v = u + at
There are three kinematic equations, out of which any one equation can be used according to the given situation. These are:
v = u+atv² -u² = 2ass = ut + 1/2at²In the above situation, a ball is rolled from the top of a table and the ball lands on the ground after 3 seconds with a final velocity of 3.5 m/s.
We have been provided by the final velocity, acceleration, and time taken by the ball, so the equation that would be most useful for finding the initial velocity will be, v =u +at.
Thus, the following kinematic equation will be most useful for finding the ball’s initial velocity:
v = u + at
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If the speed of light is 3x105 km/s and 1 km=0.62 miles, what is the speed of light in miles per hour?
Answer:
6.7 x 10^8 mi/hr
Explanation:
Do the math with units ONLY
km/s * miles/ km * s/hr = mi / hr ( ...as the km and s cancel out)
now.... put in the numbers
3 x 10^5 km/s * .62 mi/km * 3600 s / hr = 6.7x 10 ^8 mi/hr
2. Which type of tire do you think would have the least amount of friction on a road?
A. a bicycle tire
B. a motorcycle tire
C. a car tire
D. a truck tire
The type of tire which would have the least amount of friction on a road is a bicycle tire and is denoted as option A.
What is Friction?This is referred to as the force which resists the relative motion of a solid surface against each other and is directly proportional to the area of contact.
This therefore means that the largest types of tires will have the most type of friction and in this scenario, it is the truck tire. However, the bicycle tire which is the smallest will have the least amount of friction on the road and is therefore the reason why option A was chosen as the most appropriate choice.
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How far does a person travle in coming to a complete stop in 33 ms at a constant acceleration of 60g?
A person travelled a distance of 0.32m in coming to a complete stop.
Acceleration - Acceleration is the rate of change of velocity with respect to time.
It is a vector quantity.It has both the magnitude and direction. It is measured in m/s²The distance travelled is calculated as
Time t = 33ms = 33/1000 = 0.033s
Acceleration a = 60g
g = 9.8 m/s²
a = 60g = 60 × 9.8 = 588 m/s²
The person must be moving at a certain initial velocity.
Since the person is going to stop, V = 0
using equation of motion we get
V = U - at
0 = U - 588 × 0.033
0 = U - 19.404
U = 19.404 m/s
The distance travelled is
using equation of motion
V² = U² - 2aS
0 = (19.404)² - 2 × 588S
1176S = 376.51
S = 376.51 / 1176
S = 0.32 m
the distance is 0.32m
The person travelled a distance of 0.32m in coming to a complete stop.
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Find the magnitude of this
vector:
18.4 m
-28.7 m
magnitude
The magnitude of this vector:
18.4 mi-28.7 mj is 34.09m
Given:
vector is
18.4 mi-28.7 mj
Magnitude =[tex]\sqrt{18.4^2+28.7^2}=34.09[/tex]
This magnitude of a vector formula summarizes the distinct vector measures along the x-axis, y-axis, and z-axis. It is represented by the symbol |v|. A vector's magnitude is either a positive number or zero, and it can never be negative. Let us finally understand the magnitude of a vector formula by considering a few solved cases.
A vector's magnitude is equal to its length. The magnitude of the vector an is indicated by the symbol a. For further information on vector magnitude, see the introduction to vectors.
This article deduces formulas for the magnitude of vectors in two and three dimensions in terms of their coordinates. The magnitude formula for a two-dimensional vector a=(a1,a2)
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Answer:
34.09178
Explanation:
This is the correct answer for Acellus
In a normal distribution of measurements having a mean of 410 feet and a standard deviation of 45 feet, what percent of the distribution falls between 400 and 500 feet?
18.45 % percent of the distribution falls between 400 and 500 feet.
Z score is a standard score that tells you how many standard deviations away from the mean an individual value X.
Mean value ,μ= 410 feet
Standard deviation, σ = 45 feet
X = square of an individual
In a set with mean value and standard deviation the z score of a measure X is given by:
Z = (X - μ)/σ
percent of the distribution that falls between 400 and 500 feet
when
X = 400feet
Z = 400-410 / 45 = -0.22
p-value for Z= 400 is 0.4129
X = 500 feet
Z = 500- 410 / 45 = 2
p-value for Z = 500 is 0.2275
So there is 0.4129 - 0.2275 = 0.1854 = 18.45 %percent of the distribution falls between 400 and 500 feet.
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Theorem: there is no smallest positive rational number.theorem: there is no smallest positive rational number. a proof by contradiction of the theorem starts by assuming which fact?
Assume there is a smallest rational integer that has the following form: a/b
Then observe that we can define a/(b+1), which is strictly less than a/b because its divisor is bigger and is rational because it is the product of two numbers. Due to the contradiction created by our original claims that a/b is the smallest rational number that is possible, we might conclude that there is no such thing as the smallest rational number.
There can therefore be no smallest rational number because we may always define a smaller rational number than the one we now possess.
What is Rational number ?Any number that can be expressed as a ratio is considered reasonable. It is therefore possible to represent it as a fraction when the numerator and denominator are both full numbers.
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The heat death of the universe is a theoretical time in the future when the universe is supposed to?
The heat death of the universe is a theoretical time in the future when the universe is supposed to use up the entire supply of entropy.
What is the heat death of the universe entropy?According to the theory of the heat death of the universe, which is also known as the Big Chill or Big Freeze, the cosmos will eventually reach a condition where there is no thermodynamic free energy and won't be able to support processes that increase entropy. As entropy rises, matter and energy continue to dissipate until our universe is infinitely chaotic, at which point events come to a halt since entropy can no longer rise. This is referred to as the universe's heat death. Some claim that nothing happens since things can't get any worse.Learn more about the heat death with the help of the given link:
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Rodney wants to motivate his sales force to increase sales in the upcoming quarter. which channel should he choose to be the most persuasive?
In order to be most persuasive and to motivate his sales force to increase sales in the upcoming quarter, Rodney should choose a face-to-face group meeting.
Why is Face-face communication more effective?Face-to-face communication is more effective because seeing each other allows a person to understand each other’s body language and pick up on nonverbal cues.
This is important because a lot of communication can be made through non-verbal means just by observing body language.
During a face-to-face meeting, you have the ability to manipulate and attract the group’s attention and establish a sense of trust that allows for easy persuasion to the group.
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A proposed law in new jersey would ban the use of tanning beds by anyone under the age of 18. this restriction would be an example of which environmental force?
This is an example of regulatory environmental force.
What is a tanning bed?A tanning bed is a place where the skin is darkened. The term tanning has to do with the process of the darkening of the skin. It could bee achieved naturally when a person is exposed to the ultraviolet radiation from the sun. As such, a person that has a white skin could make his/her skin dark by tanning.
Now, the proposed law in new jersey that would ban the use of tanning beds by anyone under the age of 18 is a restriction that would be an example of regulatory environmental force.
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How much charge passes through a radio battery of 9 v if the energy expended is 72 j?
Amount of charge passes through a radio battery
is 8 Coulomb
Given:
voltage of battery = V = 9 v
energy = E = 72 j
To Find:
charge passes through a radio battery = Q
Solution: If voltage, (V) equals Joules per Coulombs (V = J/C) and Amperes (I) equals charge (coulombs) per second (A = Q/t)
It is given by the formula
V = E/Q
Q = E/V = 72 j/9 v
Q = 8 Coulomb
Hence, Amount of charge passes through a radio battery is 8 Coulomb
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Why is the expected stretching absorption of the c=o bond 1685 cm-1 for the structure i and 1715 cm-1 for structure ii?
Compared to compound 2, compound 1, the C to O double bond has more single bond characteristics.
How do double bonds develop?When two atoms share two electron pairs to create two covalent connections, they create a double bond; when they share three electron pairs to create three covalent bonds, they create a triple bond.
Describe Double Bond:A double bond, as opposed to a single bond, is a covalent link formed between two atoms that involves four bonding electrons. The majority of double bonds, including those in alkenes, are created when there are two carbon atoms present.
What does a double bond look like?A sigma and a pi bond are always present in a double bond. Carbon dioxide is a common instance of a double-bonded chemical. Double bonds are a structural feature of organic substances like ethene, also known as ethylene, methanoic acid, and acetone.
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A clock in a spaceship is observed to run at a speed of only 3 4 that of a similar clock at rest on earth. how fast (in terms of c) is the spaceship moving?
The speed of spaceship which run at a speed of only 3 4 that of a similar clock at rest on earth is 2.4 x 10^8 m/s
As from the given data, the clock in a spaceship is observed to run at a speed of 3/5 of a similar clock that rest on the earth is
T/T° = 3/5
When time moves at a high rate of pace, it slows down. The quantity of time dilation increases as an object moves more quickly. The constant speed of light, independent of the source of the light and the viewpoint of the observer, is partially explained by time dilation.
The expression for the time dilation is given by
T = γT°
γ = T/T°
γ = 1/√1 - v^2/c^2 is time dilation
Substituting the values in the above equation as,
γ = T/T°
5/3 = 1/√1 - v^2/c^2
v^2/c^2 = 16/25
v = 0.8 c
v = 0.8 x 3 x 10^8 m/s
v = 2.4 x 10^8 m/s
Hence, speed of spaceship moving is
2.4 x 10^8 m/s
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At an advertising agency, a team is in charge of creating a new commercial. Team members are respectful and honest when discussing which ideas are promising and which ones probably will not work. Team members support one another and help one another. What quality is this team showing?
A.
confusion
B.
causation
C.
correlation
D.
cohesion
If the members of a team are respectful and are able to get along with each other while supporting the ideas of each other, this is known as cohesion.
What is cohesion in a team?A team is composed of people that are working together to achieve a common goal. Thus the members of a team have one focus even though the methods that they apply at achieving the ends may differ tremendously.
Thus, if the members of a team are respectful and are able to get along with each other while supporting the ideas of each other, this is known as cohesion.
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What is one important difference between the glyoxylate cycle and the citric acid cycle?
The major difference is the cleavage of isocitrate by isocitrate lyase, resulting in succinate and glyoxylate, as opposed to the breakdown of isocitrate by isocitrate dehydrogenase.
What is glyoxylate cycle?A variant of the tricarboxylic acid cycle called the glyoxylate cycle is an anabolic mechanism that may be found in fungus, bacteria, protists, and plants. In order to synthesize carbohydrates, acetyl-CoA is converted to succinate in the glyoxylate cycle. When simple sugars like glucose or fructose are not available, the glyoxylate cycle in microorganisms enables cells to employ two carbons (C2 molecules) like as acetate to meet cellular carbon needs. Animals are often thought to lack the cycle, with the exception of nematodes during the early stages of embryogenesis.
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