Arrow starting from the dot, pointing away from the dot in the direction of the crane's motion. Force of the crane lifting the box: Arrow starting from the dot, pointing away from the dot in the upward direction.
What is the Crane?
The Crane is a machine used in construction and engineering to lift and move heavy objects. It is usually composed of a tall, rotating arm with a hoist at the end, operated by an operator in a cab. Cranes come in a variety of sizes, from small models that can lift a few hundred pounds to huge machines that can move thousands of tons at once. Most cranes are attached to a fixed structure, such as a building or pier. Cranes can also be mounted on vehicles, such as trucks, to move around a worksite. Cranes are essential tools in the construction industry, as they allow workers to move large objects with ease and speed. Cranes are also used in a variety of other industries, such as manufacturing, shipbuilding, and material handling.
This force is the result of the crane pushing the box forward at a constant speed of 5 m/s.
This force is the result of the crane lifting the box with an upward acceleration of 1 m/s.
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A 1000 kg car is moving at 30. m/s and comes to a rest after 6.0 seconds. What is the force on the car?
The force of the car would be = 5000m/s²
What is force?Force is defined as the external push or pull that makes an object to move from one position to another.
Mathematically, force is defined as the product of mass and acceleration of a moving object.
That is, F = mass × acceleration
But acceleration= velocity/time
F = mass × velocity/time
mass = 1000kg
velocity = 30 m/s
time = 6 second
Force = 1000× 30/6
= 30000/6
= 5000 m/s²
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Which sample of argon gas has the same number of atoms as a 100. -milliliter sample of helium gas at 1. 0 atm and 300. K?.
Answer:
one mole of each gas has the same number of molecules (Avogadro's No)
i mole He = 4 grams
1 mole Argon = 38 grams
1 mole Argon / 1 mole He = 9.5
one would need 950 ml of Ar gas
SHOW COMPLETE STEPS AND ANSWER IN THIS QUESTION!
(YOU WILL BE MARKED AS BRAINLIST IF YOU ANSWERED WITH COMPLETE STEPS)
Determine how much it would cost to heat a home's water for an hour every day for 60 days using a 2kW immersed rod at a rate of Rs. 1.50 per unit.
Why do you use the word "immersion"?
The act of totally coating something with a substance by dipping it into is called immersion. It could be literal—like diving headfirst into water—or metaphorical—like entirely giving yourself over to a task.
Why do we use immersion?
Answer and justification The resolution of a microscope is improved with immersion oil. It lessens the loss in light brought on by the specimen's refraction (light bending). When light passes through a different material, like a piece of glass
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PLEASE HELP ASAPP PLS
The refractive index of the unknown substance is 1.23.
What is refractive index?Refractive indexes have no dimensions. This value represents how much slower a light wave would go through a substance than it would in a vacuum. When divided by the velocity of light in a medium, the refractive index, denoted by the symbol n, is obtained.
speed of light in vacuum = 3.00 × 10⁸ m/s.
speed of light in the medium = 2.43 × 10⁸ m/s.
Hence, refractive index of the medium = speed of light in vacuum/ speed of light in the medium
= 3.00 × 10⁸/2.43 × 10⁸
= 1.23
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A team of students performs an experiment to test the effect of gravity on different objects with the same mass. They measure how long it takes the
objects to fall from the top of the school's bleachers. How can they insure they get accurate data? (1 point)
O by dropping the objects in random order
O by repeating the experiment several times
O by dropping all the objects at once
O by using a high-tech stopwatch
The students can ensure accurate data, by repeating the experiment several times.
option B.
What is the accuracy of an experiment?The accuracy of an experiment is how close the final result is to the correct or accepted value. The closer it is, the more accurate the experiment.
The accuracy of an experiment is obtained by performing the experiment repeatedly or many times.
Thus, for the team of students to obtain an accurate result on the effect of gravity on different objects with the same mass and time it takes the
objects to fall from the top of the school's bleachers, they must perform the experiment many times.
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Answer:
(Question) Which statement about mass is correct?
(Answer) Mass is the measure of the amount of matter in an object.
(Question) A student designs a gravity experiment. She will time how long it takes different objects to fall from her school’s roof to the ground. She will use three objects: a 2-foot-long board, a toy car, and a paper bag. What is wrong with her experiment’s design?
(Answer) The objects do not have the same size, shape, or mass, so any differences in drop times cannot be attributed to one variable.
(Question) Which statement about gravity is correct?
(Answer) Gravity is a force that attracts objects with mass toward each other.
(Question) A team of students performs an experiment to test the effect of gravity on different objects with the same mass. They measure how long it takes the objects to fall from the top of the school’s bleachers. How can they insure they get accurate data?
(Answer) by repeating the experiment several times
(Question) Students analyze their data from a gravity experiment. They find that objects fall at a greater speed from a greater height than from a lower height. What can they conclude?
(Answer) The longer an object falls, the more gravity increases its speed.
Explanation:
i just finished the quick check. enjoy
Electric charges surround you all the time. Some electric charges, such as lightning, are quite strong. Others are barely noticeable. What happens
when two electrically charged objects get near each other? Circle the response that best matches your thinking.
A. The two objects will be pulled toward each other.
B.The two objects will be pushed away from each other.
C. The two objects will either be pulled together or pushed apart.
D. The charges will cancel out and neither object will move toward or away from the other.
Explain your thinking. Describe your ideas about electric charge.
The correct answer is that the two items will either be drawn together or pushed apart, according to the stated statement.
What generates an electrical charge?Electricity is created when voltage increases to or subtracted from an object. Since atoms have a negative charge, an object gets an ions when electrons are transferred to it. When an object's electrons are taken away, it develops a positive charge.
What is electric charge?All matter has an inherent electric charge, which results from the inclusion of atoms like protons, electrons, and neutrons. The quantity of protons, electrons, and neutrons an atom has affects its charge. Positive or negative charges can exist in an electric field. Protons produce positive charge, while electrons produce negative charge.
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What is the formula of a magnitude?
The formula of a magnitude is |v| =√(x2 + y2)
A vector formula's magnitude can be used to condense the numerical value of a particular vector. A vector has a magnitude and a direction. This magnitude of a vector formula provides a summary of the individual vector measurements along the x, y, and z axes. The symbol for it is |v|.
|v| =(x2 + y2) is the formula to calculate the magnitude of a vector (in two dimensions) v = (x, y). The Pythagorean theorem serves as the basis for this formula.
|V| = (x2 + y2 + z2) is the formula to calculate the magnitude of a vector (in three-dimensional space) V = (x, y, z).
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Which example shows Pascal's principle?
O a hydraulic jack
O the wing of an airplane
O a pulley
O a wind tunnel
Which example shows Pascal's principle a hydraulic jack .
What is a hydraulic jack?
A hydraulic jack is a device used to lift heavy objects or materials by using a hydraulic cylinder to generate a large amount of force. It works by using a pump to transfer fluid from a reservoir into a cylinder, which in turn applies pressure to a piston.
When the pressure is high enough, the piston will push against the object it is lifting, allowing the user to raise or lower the object. Hydraulic jacks are often used for automotive repair, construction, and other heavy-lifting applications.
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A thread holds two carts together on a frictionless surface. A spring is compressed between the two carts. After the thread between the two carts is cut the cart on the left with a mass of 1. 5 kg moves away with a velocity of 27 cm/s. What is the velocity of the cart on the right that has a mass of 4. 5 kg?.
The velocity of the cart on the right that has a mass of 4. 5 kg is 0.09 m/s.
Velocity is the rate of change of distance with respect to time.
It has the SI unit as m/sec.Mass on the left of the cart = m1 = 1.5 kg
on the left of the cart = v1 = 27 cm/s = 0.27m/s
Mass on the right of the cart = 4.5 kg
Velocity on the right of the cart = x
According to the law of conservation of linear momentum:
We can say that.
Initial momentum will equalize the final momentum.
And momentum is the product of mass and its velocity.
Assigning one of its velocity as negative because both are in different direction.
mathematically, (m1*-v1) + (m2v2) = 0
(1.5*-0.27) + (4.4*x) = 0
x = 0.09 m/s
So the velocity of the cart on the right side that has a mass of is 0.09 m/s.
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Which phrase describes an activated complex? a. It is the potential energy required for a reaction to occur. B. High-potential energy and stable c. Low-potential energy and stable d. Low-potential energy and unstable.
The phrase describes an activation of complex is (a) It is the potential energy required for a reaction to occur.
What is activated complex?Activated complex is a process when reactant is interacted each other to form the product. Activated complex produce the highest energy in the chemical reaction because of its unstable atom activity and molecule reaction. To activated the activated complex, we need to a kinetic energy that is higher or equal to potential energy required for a reaction to occur. In short, activated complex is a process to change potential energy into kinetic energy in the reaction to create a product.
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A 50kg student is climbing a rock face with a constant speed. Neglect any friction and drag impeding her motion. How much force is the student generating up the hill?
Answer:
Below
Explanation:
50 * 9.81 = 490.5 N since there is no acceleration, climber must only overcome the accel of gravity
Dwayne filled a small balloon with air at 298.5 K. He put the balloon into a bucket of water, and the water level in the bucket increased by 0.54 liter.
If Dwayne puts the balloon into a bucket of ice water at 273.15 K and waits for the air inside the balloon to come to the same temperature, what will the volume of the balloon be? Assume the pressure inside the balloon doesn’t change. Round to the nearest hundreth.
The volume of the balloon at 273.15 K is _____ liters.
The volume of the balloon will be 0.494 liters.
What is volume?Volume is described as a measure of three-dimensional space which is often quantified numerically using SI derived units or by various imperial or US customary units.
We will use Charles law to solve for the volume and it states that the volume of the gas is directly proportional to the temperature of the gas at constant pressure and number of moles.
Mathematically V1 / T1 = V2/ T2
where,
v1 = initial volume of gas = ?
v2 = final volume of gas = 0.54 L
T1 = initial temperature of gas = 273.15 K
T2 = final temperature of gas = 298.5 K
Substitute all the given values in the above equation, we get the initial volume of balloon.
V1 / 0.54 = 273.15/ 273.15
v1 = 0.494 liters.
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summary of a article“flexible benefits”
After 5 days, what is the expected frequency of the wrinkly-spreader morphotype in the static (not shaken) microcosm
After 5 days, the expected frequency of the wrinkly-spreader morphotype in the static (not shaken) microcosm will depend on the initial frequency of the morphotype in the microcosm.
What is initial frequency?The frequency of a repeated event is its number of instances per unit of time. Another name for it is temporal frequency, emphasizing how it differs from spatial frequency & angular frequency. The period is indeed the reciprocal of a frequency since it is the length of time for one cycle inside a repeating occurrence. For example: if a newborn baby's heart beats at a frequency of 120 times a minute, its period —the time interval between beats— is half a second. Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibra tory phenomenon.
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if you walked one km from your home to the store and then one km back home then walked a distance of km and your displacement was km.
Your home's location at x and the store's location at x + 2 km
Solving the displacement problem.
What does physics mean by displacement?"Displacement" describes a change in an object's location. An arrow pointing from the starting point to the finishing point serves as the object's symbol. For instance, an object's position changes if it shifts from position A to position B. For instance, an object's position changes if it shifts from position A to position B.
Displacement formula: What is it?Substitution Formula
The final position less the starting position is known as displacement.
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If you walked one kilometer from your home to the store and then one kilometer back home, you did indeed cover a distance of two kilometers. The distance is calculated by adding the lengths of the two separate paths together, which in this case would be 1 kilometer + 1 kilometer = 2 kilometers.
However, when we talk about displacement, we're referring to the change in position or the shortest straight-line distance between your starting point and your ending point. In this scenario, since you ended up back at your starting point, your displacement is 0 kilometers. This is because the straight-line distance from your home to the store is canceled out by the straight-line distance from the store back to your home.
To better understand this concept, let's consider an example. Imagine you take a trip around a circular track. You start at one point, go all the way around the track, and end up back at the starting point. Even though you covered a certain distance along the track, your displacement is still 0 because you ended up back where you started.
So, in summary, the distance you walked is 2 kilometers, but your displacement is 0 kilometers because you returned to your starting point.
If a photon has a frequency of 5.20 x 1014 hertz, what is the energy of the photon? Given : Planks constant is 6.63 x 10 -34 joule.seconds
The energy of the photon can be calculated using the equation E = h * f, where E is the energy, h is Planck's constant (6.63 x 10^-34 Js), and f is the frequency of the photon (5.20 x 10^14 Hz). Plugging in the values, we get:
[tex]E = (6.63 x 10^-34 Js) * (5.20 x 10^14 Hz) = 3.48 x 10^-19 J[/tex]
How does the energy of a photon change as its frequency increases?The energy of a photon is directly proportional to its frequency. As the frequency of a photon increases, so does its energy. This relationship is described by the equation E= hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency of the photon. Therefore, if the frequency of a photon increases, the energy of that photon will also increase. This is why high-frequency photons, such as X-rays and gamma rays, have higher energies than low-frequency photons, such as radio waves.
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Please help, will give brainiest
QUESTION 1.
Element X on Planet Qatar has three known isotopes: X-121 with a relative abundance of 43.2%, X-123 with a relative abundance of 53.1%, and X-129 with a relative abundance of 3.70%. What is the average atomic mass in amu of Element X given this information?
QUESTION 2.
How did Rutherford's experiment change the way scientists had previously viewed atomic structure? How did this pave the way for subsequent changes up to and including the currently accepted quantum mechanical atomic model?
QUESTION 3.
How is percent abundance related to average atomic mass?
a) The relative atomic mass is 122.35
b) The Rutherford model produced the planetary model of the atom and laid the foundation for the Bohr model
c) The percentage abundance shows the most popular isotope.
What is the relative abundance?We need to know that an element must be composed of the isotopes of the element. We have to know also that the isotopes of the element would all have the same atomic number but they would have different mass numbers for each of the elements that are under study.
We need to determine the average atomic mass of the element X as follows;
(121 * 0.432) + (123 * 0.531) * (129 * 0.037)
= 52.27 + 65.31 + 4.77
= 122.35
We can see that the calculation that we have made above has given the relative atomic mass of the isotope to be about 122.35.
Rutherford showed by experiment that at the core of the atom lies the nucleus around which the electrons evolve as planets round the sun hence the name planetary model. The furthered the ideas that led to the Bohr model of the atom.
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What is the gas pressure within a cylinder if there is 5.0 g of co2 gas in a 10 L cylinder at 25 OC inside it?
Answer:
P V = N R T Ideal gas equation
1 mole CO2 = 12 + 32 = 44 g
5 g = 5 / 44 = .114 moles
One definition of R is R = .08207 L-Atm / mole-deg K
P = .114 * .08207 * 298 / 10 = .279 Atmosphere
One needs to use care in using R in terms of other values given
The driver of a car traveling at 27.5 m/s applies the brakes and undergoes a constant
deceleration of 1.09 m/s^2.
How many revolutions does each tire make
before the car comes to a stop, assuming that
the car does not skid and that the tires have
radii of 0.15 m?
Answer in units of rev.
If a firefighter dropped a person onto the safety net, and right
before the person hit the net they had a velocity of 12 m/s and
1800 J of kinetic energy, then what was the mass of the
person?
The kinetic energy of an object is half of the product of mass and square of velocity. Then, for a person with a kinetic energy of 1800 J and velocity of 12 m/s is 25 kg.
What is kinetic energy ?Kinetic energy of an object is generated by virtue of its motion. It is related to the mass and velocity by the expression as follows:
Ke = 1/2 m v².
Thus, as the mass or velocity increases, kinetic energy increases.
Given velocity of the person = 12 m/s
kinetic energy = 1800 J
1/2 m v² = 1800 J
The mass of the person can be then calculated as follows:
m = 2 Ke/v²
m = 1800 J × 2 / (12 m/s)²
m = 25 Kg.
Therefore, the mass of the person is 25 Kg.
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An full shopping cart with a mass of 100. kg is moving at 5.0 m/s and runs into a stationary shopping cart that is empty (30. kg). After the collision, the full shopping cart is moving at 2.7 m/s. What is the empty shopping cart moving at?
The empty shopping cart is moving at 7.67 m/s.
What is law of conservation of momentum?According to the law of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.
Total initial momentum = total final momentum
100 kg ×5.0 m/s + 30 kg ×0 m/s = 100 kg ×2.7 m/s + 30 kg ×v
v = (5.0 - 2.7)(100/30) m/s
= 7.67 m/s.
Hence, the empty shopping cart is moving at speed of 7.67 m/s.
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A 2400 kg car traveling to the north is
slowed down uniformly from an initial velocity
of 21.0 m/s by a 7110 N braking force acting
opposite the car's motion.
a) What is the car's velocity after 2.00 s?
Answer in units of m/s.
The car's velocity is 36.07 m/s if A 2400 kg car traveling to the north is slowed down uniformly from an initial velocity of 21.0 m/s by a 7110 N braking force acting opposite the car's motion.
What is a simple definition of velocity?
Velocity is a vector expression of the displacement that an object or particle undergoes with respect to time . The standard unit of velocity magnitude (also known as speed ) is the meter per second (m/s).
What is an example of velocity and speed?
Velocity is speed with a direction. Saying Ariel the Dog runs at 9 km/h (kilometers per hour) is a speed. But saying he runs 9 km/h Westwards is a velocity. Imagine something moving back and forth very fast: it has a high speed .
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A body moves in a perfectly circular path at constant speed. Are there forces acting on the system?.
A body moves in a perfectly circular path at constant speed. There must be a force pulling toward the center of the circle. According to Newton's first law, there must a force present to keep the object moving in a circle rather than a straight line.
About Newton's First lawNewton's 1st law is to show the resultant force acting on an object with a composition equal to zero, so that an object that is initially at rest will always remain at rest. While an object initially moves in a straight line, it will forever continue to move in a straight line at a constant speed. So it can be concluded that in Newton's Law 1 the acceleration of an object is directly proportional to the force acting on the object and inversely proportional to the mass or weight of the object itself.
The properties of objects in Newton's 1st law tend to maintain their original state with the same inertia or degree of inertia. That is why Newton's 1st Law is also known as the Law of Inertia. The shape of the moment of inertia in Newton's 1st Law occurs in various forms, for example linear moments of inertia, mass moments of inertia, and polar or polar moments of inertia.
The magnitude of the stresses also differ according to the material used, such as bending stress and torsional stress, so the calculation can be based on the moment of inertia
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Question 7
What is the kinetic energy of a 15 kg child rolling down a hill at 2 m/s?
Answer:
KE = 30 J
Explanation:
i used a kinetic energy calculater
A ball is being pushed with a force of 50 N. If the ball has a mass of 0.5 kg, what will the acceleration be?
Important Formulas:
[tex]F=ma[/tex]
force(measured in newtons) = mass(measured in kg) * acceleration(measured in m/s^2)
__________________________________________________________
Given:
[tex]F=50N[/tex]
[tex]m=0.5kg[/tex]
[tex]a=?[/tex]
__________________________________________________________
In order to find acceleration, we will need to rearrange the force formula to make acceleration the subject.
[tex]F=ma[/tex]
[tex]\dfrac{F}{m} =\dfrac{ma}{m}[/tex]
[tex]a=\dfrac{F}{m}[/tex]
__________________________________________________________
Finding acceleration:
[tex]a=\dfrac{F}{m}[/tex]
[tex]a=\dfrac{50}{0.5}[/tex]
__________________________________________________________
[tex]\fbox{a = 100 m/s squared}[/tex]
Patti is driving her son, Jacob, to college at Prairie View. Patti is driving the legal posted speed limit of sixty-five miles per hour. Steve is on his way to PV, as well, but he is late and is driving a brisk 104 mi/h. Relative to Steve, Patti’s velocity is
Answer:
-39 mph
Explanation:
65 - 104 = -39 mph
A projectile with mass m is fired with initial horizontal velocity vx from height.
The change that will would have resulted in a greater time for a projectile of mass m fired with an initial horizontal velocity vx from a height h above the ground is increase the height traveled by the projectile to 2h (option D)
The projectile's flight time is determined using the formulas below;
h = v₀t + ½ gt²
Where:
h = height (m)
v₀ = the starting velocity (m/s)
t = time (s)
g = the acceleration due to gravity (9.8m/s²)
v₀ (initial vertical velocity of the projectile) = 0
Hence,
2h = gt²
t = [tex]\sqrt{\frac{2h}{g} }[/tex]
The projectile's mass has no impact on how long it takes to travel if friction caused by air resistance is disregarded.
In the vertical direction, the initial horizontal velocity is not taken into account.
Therefore, increasing the projectile's height to 2h is the only method to lengthen its flight time.
The question is incomplete, it should be:
A projectile with mass m is fired with initial horizontal velocity vx from height h above level ground. Which change would have resulted in a greater time of flight for the projectile? [Neglect friction.]
A. decreasing the mass to m/2
B. decreasing the height to h/2
C. increasing the initial horizontal velocity to 2vx
D. increasing the height to 2h
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Radius of curvature of human eye is 0.78 cm. For an object at infinity, image is formed at 3 cm behind the
Tetracting surface. The refractive index of eye is:
The refractive index of the eye cannot be determined with the information provided.
What is the refractive index of the eye,n ?This refers to the value obtained from the ratio of the speed of light in a vacuum to that in a second medium of greater density.
The refractive index is also equivalent to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance.
It can be calculated using the formula:
n = c/v.
where,
n = the refractive index of the eye
c = wavelength in empty space
v = the velocity of light
From the question:
r = 0.78 cm
i = 3 cm
The radius of curvature and the location of the image formed by an object at infinity is related to the eye's optics, but the refractive index also depends on the materials of the various parts of the eye, such as the cornea and lens.
Hence, the refractive index can also vary depending on the specific wavelength of light being considered.
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What are the domain and range of FX =- 37?
The domain of f(x) = –37 is all the real numbers. And, the range of f(x) = –37 is y = –37.
The given function f(x) = –37 is a horizontal line which goes from negative infinity to positive infinity.
In this case, the domain can be any number since there is no limit on what the x value can be.
So, the domain of the given function f(x) = –37 will be all real numbers.
And, the range will always be y = –37 because no matter what x value will equal, y will always be equal to –37 in the function of f(x) = –37.
So, the range of the given function f(x) = –37 will be y = –37.
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Suppose you are choosing between two roads. The first route is 70 miles at 55 mph, and the second road is 85 miles at 65 mph. Which route would get you there faster, and in what amount of time?.
As a result, the first path would take 1 hour, 18 minutes to get you there.
What is the word for amount of time?Duration is the whole time that anything exists. A duration might be short, like the duration of a party, or it can be extensive, like the length of a lecture series. The time it takes to finish anything has come to be denoted by the term duration. Except for noon and midnight, use numerals for the times; separate the hours and minutes with a colon; and avoid using cyphers (double zeros) for complete hours.
It would take around 1 hour and 18 minutes to travel the first route, which is 70 miles long and travels at 55 mph. It would take around 1 hour and 21 minutes to travel the second route, which is 85 miles long and travels at a speed of 65 mph.
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