By ideal gas approximation, the pressure will rise until 1.25 times greater than the initial pressure.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.
From the question above, we know that
T1 = 25 ⁰C = 298 K
T2 = 100 ⁰C = 373 K
Assume that P1 = P
When the initial and final temperature is the same, we can use the ratio of pressure and temperature as
P1 / T1 = P2 / T2
P / 298 = P2 / 373
P2 = 1.25 P
Hence, the pressure will rise until 1.25 times greater than the initial pressure.
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Which cells have plasma membranes that undergo voltage changes in response to stimuli?
Neuron and muscle cells have plasma membranes that undergo voltage changes in response to stimuli.
What is a neuron?Neurons are messengers of information.
Between various brain regions and between the brain and the rest of the nervous system, information is transmitted using electrical impulses and chemical signals.
A neuron has a cell body that includes a nucleus and cytoplasm, from which long, thin hair-like structures emerge.
The axon, a solitary long component of the neuron, is responsible for carrying the nerve impulse to various body areas.
The dendrites are the neuron's small, branching body sections.
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What does a vector have that a scalar quantity doesn't have?
*
Vectors have magnitude and direction and scalars have only magnitude & have no direction .
The physical quantities which possess magnitude as well as direction are called vector quantities. Examples of vectors such as displacement, velocity , and acceleration. And the quantities which possess only magnitude are known as scalar quantities for example height, mass, area, and volume. Magnitude can be defined simply as distance or quantity. For example, magnitude may be used in such a way as, the comparison between the speeds of a car and a bicycle.Velocity of an object can be said as, the rate of change of displacement with respect to time of an object . Its unit is m/s and it is a vector quantity
V = Δx/Δt
In here , V is velocity , Δx is change in displacement and Δt is change in time of an object.
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The ability to buy a soda from a vending machine demonstrates which element of the marketing mix?
It demonstrates the place/distribution element.
Place, or its more popular name “distribution,” refers to the method by which a company delivers its goods to clients. It is one thing to have a fantastic product that is priced reasonably.
Which four forms of distribution are there?Direct selling, selling through intermediaries, dual distribution, and reverse logistics channels are the four different categories of distribution channels.
What does distribution or place mean in marketing?Distribution (or place) is one of the marketing mix’s four components. Making a good or service accessible to any consumer or any business user who is in requirement of it is the process of distribution.
The producer or service provider may carry this out directly or through indirect channels, such as distributors or intermediaries.
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Can someone help me on this it’s for physics , the video did not help at all :(
Answer:
see attached table
Explanation:
1 km (kilometer) = 1000 m (meters)
1 m = 100 cm (centimeters)
1 cm = 10 mm (millimeters)
Going the other way
1 mm = 0.10 cm
1 cm = 0.01 m
1 m = 0.001 km
It is easier to find the values on both sides of the given value and then successively convert using the conversion ratios
The graph indicates given values in bold blue and conversions in normal font
Will explain two of these
Row 2: Given 1500 cm
1500 cm = 1500 x 10 = 15,000 mm
1500 cm = 1500 / 100 = 15 m
15 m = 15 m/ 1000 = 0.015 km
Row 5: Given 0.002 m
0.002 m = 0.002/1000 = 0.000002 km
0.002 m = 0.002 m x 100 = 0.2 cm
0.2 cm = 0.2 x 0 = 2 mm
and so on
Suppose you are on a cart, initially at rest, which rides on a frictionless horizontal track. If you throw a ball off the cart towards the left, will the cart be put into motion?.
If you throw a ball off the cart towards the left then the cart will move to the left .
How the cart moved to the left and what phenomena was into consideration?The cart is initially at rest, but then rides on a frictionless horizontal track.Throwing a ball towards the left will obviously put the cart into motion.The cart will start moving in left because the ball was thrown left.To balance the momentum of the ball in the opposite direction the cart started moving towards the left.The phenomena to understand this is the law of conservation of momentum.To know more about momentum and conservation visit:
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How many neutrons per second are emitted spontaneously from a 1 mg sample of 252cf?
2. how many neutrons per second are emitted spontaneously from a 1 mg sample of 248cm?
The number of neutrons per second are emitted spontaneously is [tex]2.3\times10^9[/tex] neutrons/mg-s.
An atom is made up of three distinct subatomic components. Protons, electrons, and neutrons are what they are. In an atom, protons and electrons are positively charged, while neutrons are uncharged or neutral entities. The masses and charges of each of these subatomic particles are known.
The number of atoms in 1 gm of Cf - IS
[tex]N= (1g)(10^{-3})(6.02\times 10^{23} atoms/mol)/252 g/mol[/tex]
[tex]=2.38\times 10^{21} atoms/gm[/tex]
The number of neutrons released per each fission is 3.73 and the fission probability per decay is,[tex]3.09\times 10^{-2}[/tex]
[tex]=(3.73)(2.38\times 10^{21})(8.318\times10^{-9})(3.09\times10^{-2})[/tex]
[tex]=2.28\times 10^{12 }[/tex]neutrons/g-s
Therefore the number of neutrons per second are emitted spontaneously is,
[tex]=2.28\times 10^{12 }[/tex]neutrons/g-s
[tex]=2.28\times 10^{12 }[/tex] neutrons/g-s([tex]10^{-3}[/tex]/1mg)
=[tex]2.13\times10^{9}[/tex] neutrons/mg-s
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What impulse occurs when the same force of 10 n acts on the cart for twice the time?
If the time interval is doubled with the force kept constant, the impulse is also doubled.
What is the definition of force?The definition of force in physics is that force is any kind of push or pull that is applied on a massed object changes its velocity.
An external force is a kind of agent that has the power to alter any type of resting or moving condition of a body. It has got its own direction and a magnitude.
What in science is a force?One thing experiences a force from another. There are both living things and non-living objects included in the concept of force.
All objects, living and non-living, have the ability to exert a force on or against another item, as well as have their actions affected by forces.
Newton, or as it is abbreviated as N, is the SI unit of force. The meter and unit are the foundation units that pertain to force.
What in elementary physics is an impulse?In physics, the term “impulse” is used to describe or quantify the impact of force acting gradually to alter an object’s momentum.
It is often stated in Newton-seconds or kilograms per second and is denoted by the symbol J.
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A uniform solid sphere rolls down an incline. what must be the incline angle if the linear acceleration of the center of the sphere is to have a magnitude of 0.10 g?
The uniform solid sphere rolls down an incident angel for solid sphere is θ = 9.6 degree .
What is incident angel?The angle of incidence in geometric optics is the angle formed between a ray incident on a surface and the normal, or line perpendicular to the surface at the point of incidence. Any wave, including optical, acoustic, microwave, X-ray, and others, can create a ray.
required acceleration = .12 g
The term for the acceleration of a rolling body on an inclined surface
= gsinθ / 1 + k² / R²
Here rolling body is sphere
k² = 2/5 R²
k² / R² = 2/5
acceleration = g sinθ / 1 + k² / R²
.10 g = g sinθ / 1 + k² / R²
.10 g =g sinθ / 1 + 2/5
.10 = sinθ / 1.4
sinθ = .168
θ = 9.6 degree .
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A hydrogen atom in the n=6 state decays to the n=3 state. what is the wavelength of the photon that the hydrogen atom emits? use hc=1240 nm ev.
The wavelength of a photon that the hydrogen atom emits is 1.093 x 10^-8 m.
The wavelength of a photon is given by the following formula,
1/λ = R{1/n1^2- 1/n2^2}
Here λ is the wavelength of the photon
R is the Rydberg Constant= 1.097 x 10^7 m
N1 is the initial state
N2 is the final state
Putting n1 =3, n2= 6 in the above equation, the wavelength lambda comes out to be,
1/λ = R{1/(3)^2 - 1/(6)^2}
λ = 12/1.097 x 10^7
Lambda = 1.093 x 10^-8 m.
Hence, the wavelength of the photon that the hydrogen atom emits is 1.093 x 10^-8 m.
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What is the main reason for searing a roast at a high temperature before finishing it at a lower temperature?
Prior to cooking, searing meats at high heat seals the pores, preserving the juices and preventing shrinking.
Why is a roast seared at a high temperature before being finished at a lower temperature?A roast looks and tastes good when it is roasted at high temperatures (400°F and above). For thin, tender meats that depend on a flavorful, well-browned crust for flavor, such beef tenderloin and pork tenderloin, this approach works best.
Why is a roast seared in the first place?If you want to produce the most delectable roasts, steaks, chops, and other meat dishes, searing the meat is a necessary step.
Meat is seared to caramelize the natural sugars and brown the proteins, resulting in a thick, nutty crust.
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If+a+1.10+cm+thick+piece+of+lead+can+absorb+90.0%+of+the++rays+from+a+radioactive+source,+how+many+centimeters+of+lead+are+needed+to+absorb+all+but+0.031%+of+the+'s?
The thickness of the lead sheet that absorbs 99.69 % of the gamma rays is 4.497 cm.
The lead can absorb 90% of rays at the thickness =
1.10 cm
The intensity of the radiation is,
[tex]I = I _{0}e ^{ - ux} [/tex]
The coefficient of attenuation is
[tex]e ^{ - ux} = \frac{ I}{I _{0} }[/tex]
[tex] - ux = In \: ( \frac{ I}{I _{0} })[/tex]
[tex]= - \frac{1}{1.10} In \: (10)[/tex]
[tex] = \frac{1}{1.10} - In \: (0.1)[/tex]
= 0.667 cm—¹
The coefficient of attenuation is 0.667 cm—¹.
The thickness of the lead sheet that absorbs 99.69 % of the gamma rays is,
[tex]u = \frac{ - 1}{x}In \: \frac{ I}{I _{0} }[/tex]
[tex]0.667 = - \frac{1}{x} In(0.31)[/tex]
x = 4.497 I'm
Therefore, the thickness of the lead sheet that absorbs 99.69 % of the gamma rays is 4.497 cm.
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write the principal of the conservative of energy
Answer:
The principle of energy conservation states that energy is neither created nor destroyed. It may transform from one type to another.
The escape speed from the moon is much smaller than from earth, around 2. 38 km/s. True or false?.
The statement is True.
What is the Escape speed of the Moon?
The Escape velocity of the Moon is 2.38km/s.
The conservation of energy and an energy field with a finite depth leads to the existence of escape velocity. When moving under conservative forces (like a static gravity field), an object with a given total energy can only travel to combinations of locations and speeds that have that total energy; locations with higher potential energy cannot be reached at all. The object's reachable locations increase as speed (kinetic energy) is added; with enough energy, the locations become infinite.The minimum speed an object needs to travel at in order to "escape" gravity for a given gravitational potential energy at a given position is known as the escape velocity (i.e. so that gravity will never manage to pull it back). Because it does not specify a direction of travel, escape velocity is actually a speed (not a velocity) and the object can escape the gravitational field in any direction (provided its path does not intersect the planet).
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The length between two given vectors is called what?
explain please
The electric potential along an x-axis is given by the expression v = ax - bx2, where a and b are constants. at what point on the x-axis is the electric field zero?
At x=1m point on the x-axis the electric field is zero when it is given by the expression v = ax - bx2, where a and b are constants.
How is electric potential determined?We will use the formula V = k * q / r to get the electric potential at any place A due to a single point charge.
Formula for electric potentialq stands for electrostatic charge, r for the separation between point charge and A, and k = 1 / 4 * * 0 for Coulomb's constant.
What is the potential V formula?V = k × [q/r]
Where, V stands for potential electric energy. point charge = q R is the distance from any place near the charge to the charge site.
Explain what the electric field isWhen charge is present in any form, a point in space has an electric field that is connected to it. The value of E, often known as the electric field strength or electric field, expresses the size and direction of the electric field.
Ex = - dV/dx = -(a-2bx) = 0
solving for x, we have
x=a/2b = [2V/m] / 2(1V/m^2)
= 1m
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If its volume remains unchanged, what will its pressure be at the temperature at which co2co2 solidifies?
The pressure for CO₂ will be 0.75atm when volume remains unchanged.
What is pressure?The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure. In comparison to the surrounding pressure, gauge pressure is the pressure. Pressure is expressed using a variety of units.
PV = nRT
[tex]\frac{P_{1} }{T_{1} } = \frac{P_{2} }{T_{2} }[/tex]
[tex]P_{1} = \frac{1.05atm}{273K} * (194.5K)[/tex]
P1 = 0.748atm
which on round figure gives us,
P1 = 0.75 atm
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What is the wavelength of the photon released when an electron in a hydrogen atom transitions from = 4 to = 1?
The wavelength released in transition energy is λ = 9.73 x 10¯⁸ m.
We need to know about transition energy to solve this problem. Electrons in a hydrogen atom can move to another level of energy. It is also called a transition. In this process, electrons will absorb or release their energy to move. The transition energy can be determined as
ΔE = E2 - E1
where ΔE is transition energy, E2 is the final state of energy and E1 is the initial state of energy.
The state energy of a hydrogen atom can be calculated by
E = -(13.6) / n² eV
E = h.c / λ
where n is the number of energy states, h is Planck constant (4.136 x 10¯¹⁵ eV/Hz), c is speed of light (3 x 10⁸ m/s) and λ is wavelength.
From the question above, we know that
n1 = 4
n2 = 1
By substituting the following parameter, we get
ΔE = E2 - E1
ΔE = -(13.6) / n2² - (-(13.6) / n1²)
ΔE = -(13.6) / 4² - (-(13.6) / 1²)
ΔE = 13.6 - 0.85
ΔE = 12.75 eV
Calculate the wavelength released
ΔE = 12.75 eV
h.c / λ = 12.75
4.136 x 10¯¹⁵ . 3 x 10⁸ / λ = 12.75
λ = 9.73 x 10¯⁸ m
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Blood is accelerated from rest to a speed of 27.5 cm/s in a distance of 1.75 cm by the left ventricle of the heart. determine the magnitude of the acceleration of the blood.
The blood that travel from rest to a speed of 27.5 cm/s in a distance of 1.75 cm has an acceleration of: 216.07 cm/s²
The formulas and procedures we will use to solve this exercise are:
a = (vf² - vi²)/2 * x
Where:
a = accelerationvi = initial velocityvf = final velocityx = distanceInformation about the problem:
vi= 0 cm/sx= 1.75 cmvf= 27.5 cm/sa=?Applying the acceleration formula we have:
a = (vf² - vi²)/2 * x
a = [(27.5 cm/s)² - (0 cm/s²)] /2 * 1.75 cm
a = [756.25 cm²/s² - 0 cm²/s²] /3.5 cm
a = [756.25 cm²/s² ] /3.5 cm
a = 216.07 cm/s²
What is acceleration?It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2
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By adding weights around the ankles, what happens to the moment of inertia of the lower limb as it swings about the hip during walking?
The rationale underlying this hypothesis is that carrying the loads on the arms is dominated by passive dynamics.
The moment of inertia of the lower limb by passive dynamics.
Explanation:
This hypothesis is supported by the reasoning that, if passive dynamics predominates when loads are carried on the arms, then passively swinging a load should be less expensive than actively swinging a load when it is carried on the legs (Browning et al., 2007; Royer and Martin, 2005).
Because carrying loads close to the body's COM has typically been observed to be the least expensive way to carry loads while walking (Browning at all., 2007; Royer and Martin, 2005; Soule and Goldman, 1969)
We also hypothesized that carrying loads on the swinging arms would be more expensive than carrying loads near the COM (positioned about the waist in this study).
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The objective lens is the lens at the top of the microscope that you view the specimen through. select one:
a. true
b. false
It is false that the objective lens is the lens at the top of the microscope that you view the specimen through.
The objective lens is not the lens at the top of the microscope through which you see the specimen; it is the eyepiece lens. The eyepiece lens is the lens at the top that you look through, and it normally has a 10x or 15x magnification. A tube connects them to the objective lenses. The objective lenses are the ones closest to the specimen being studied; they are placed right above the specimen due to their magnification powers, and they also produce the specimen's image. A microscope normally has three or four objective lenses, each with a power of 4x, 10x, 40x, or 100x.
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what was Ethan's velocity between 9:30 and 10:00, in km/hr?
Ethan's velocity between 9:30 and 10:00 in km/hr is 10.
Equation :To know the velocity of the in between 9.30 and 10,
Use the formula,
speed = distance / time
Given,
distance 1 = 10 km
distance 2 = 15 km
time = 30 min
v = ?
Putting values,
v = Δs/Δt
v = 15 - 10 / 30 min
v = 5 / 1800 sec
v = 5000 m / 1800 sec
v = 2.78 m/sec
Or,
v = 5 km / 0.5 h
v = 10.0 km/h
Velocity :The direction of a body or object's movement is defined by its velocity. In its basic form, speed is a scalar quantity. In essence, velocity is a vector quantity. It is the speed at which distance changes. It is the displacement change rate.
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A frictionless 300 n sled is being pulled by two sled dogs. blanco pulls forward with a force of 110 n and red pulls forward with a force of 130 n. what is the net force acting on the sled?
The net force is 240 N.
We need to know about force resultant to solve this problem. The force resultant is the total net force applied to the object according to the direction. It can be written as
R = F1 + F2 + ... + Fn
where R is force resultant (net force)
From the question above, we know that
F1 = 110 N
F2 = 130 N
The sled doesn't have friction force due to medium is frictionless.
Because the direction is the same, the force will add to each other.
R = F1 + F2
R = 110 + 130
R = 240 N
Hence, the net force is 240 N
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ruth throwsa baseball straight up at 17 m/s. what is balls velocity at .53 seconds
The velocity of the ball is 16.9 m/s at 0.53 seconds. The given velocity of 17 m/s is the moving/change in velocity and 0.53 seconds is the given time.
How to calculate the velocity when the velocity changes?to find the velocity let's 1st find out the acceleration using the formula
a = Change in velocity/time
a = 32.07 m/s²
Velocity = acceleration X Time
Velociy = 32.07 X 0.53
= 16.99 m/s
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Which patient would be considered a good candidate for hyperbaric oxygen therapy?
Hyperbaric oxygen treatment includes inhaling pure oxygen in a pressured atmosphere. Hyperbaric oxygen therapy is a well-established treatment for decompression sickness, a possible complication of scuba diving. Other diseases treated with hyperbaric oxygen therapy include significant infections, air bubbles in your blood vessels, and wounds that may not heal as a result of diabetes or radiation harm.
Hyperbaric oxygen treatment is used to treat a variety of medical disorders. And it is used in a variety of ways by medical institutes. If you have any of the following conditions, your doctor may recommend hyperbaric oxygen therapy: Brain abscess, arterial gas embolism, burns, carbon monoxide poisoning, crushing injury, sudden deafness, decompression sickness, exceptional blood loss anemia, gangrene, infection of skin or bone that causes tissue death, nonhealing wounds, such as a diabetic foot ulcer, radiation injury, skin graft or skin flap at risk of tissue death, traumatic brain injury, sudden and painless vision loss.
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9
> G.1 Calculate velocity from time and distance RXW
Submit
ations
plans
Matthew was parasailing at a constant velocity behind a motorboat. As he was parasailing, he
passed over a kayak moving at 64 meters per minute, and he moved 200 meters west in
0.5 minutes. What was Matthew's velocity?
Write your answer as a whole number.
meters per minute to the west
As he was parasailing, he passed over a kayak moving at 64 m/minute, and he moved 200 meters west in 0.5 minutes. Matthew's velocity will be 400m/minute to the west.
The velocity of an object can be defined as the rate of change of an object's position relative to the frame of reference and over time. It sounds complicated, but basically, the speed is accelerating in a particular direction. It is a vector quantity, which means we need both magnitude (speed) and direction to determine speed. Its SI unit is meters per second (ms-1). If there is a change in magnitude or direction in the speed of an object, the object is said to be accelerating.
According to the question:
Velocity = Distance/ Time
Given in the question:
Distance= 200
Time= 0.5 minutes
Substitute the value,
Velocity= 200/0.5
Velocity = 400m/minute
Therefore, the velocity for the given question is 400m/minute.
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If the airspeed of the plane (its speed in still air) is 335.0 km/h, in which direction should the pilot head?
The plane's speed relative to the ground is 309.8 km/h.
Airspeed of the plane = 335 km/h
Speed of the wind toward the south = 80 km/h
The pilot should head in the direction,
OA= AB × cos θ
[tex]cos \: θ = \frac{OA}{AB}[/tex]
[tex] θ = cos ^{ - 1} (\frac{OA}{AB})[/tex]
[tex]cos \: θ = \frac{80}{335}[/tex]
θ = 75.5°
When the airspeed is 335 km/h the pilot must head 75.5° West or North.
The plane speed relative to the ground is,
OB = AB × sin θ
OB = 335 × sin (75.5°)
OB= 309.8 km/h
Therefore, the plane's speed relative to the ground is 309.8 km/h.
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An example of mechanical work is ________; an example of transport work is _______.
An example of mechanical work is the contraction of muscles; an example of transport work is the pumping of ions across the cellular membranes.
Generally, our cells can perform three major types of work which include chemical work, mechanical work as well as transport work.
A chemical work example is the building of proteins which are considered large molecules. The energy required for the dehydration synthesis reaction is provided by ATP which is able to link amino acids together.
One of the major examples of mechanical work is the activity of contraction of muscles. In the muscle cells, phosphate groups are transferred to certain proteins by ATP. These proteins are able to change the shape, which can start a series of events that makes the contraction of muscle cells.
On the other hand, a transport work example includes the activity of pumping solutes including ions to pass across a cellular membrane. Here again, there will be a transfer of a particular phosphate group from ATP that makes the respective receiving membrane protein so as to change shape as well as enable ions to pass through effectively.
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A room is heated by an iron that is left plugged in. is this work interaction? take the entire room, including the iron, as the system.
It is a work interaction because the electrons are crossing the system boundary, thus doing electrical work.
Work will be defined as intricate patterns of interpersonal communication amongst interdependent people. All interaction places restrictions on individuals involved while also allowing them to do things they otherwise would not be able to.
Verbal, bodily, phone, and written communication are the four basic methods used in the workplace. You always have to deal with at least one at any given time during the working day.
Beneficial relationships at work have been demonstrated to increase job satisfaction and have a positive impact on staff turnover since employees who feel supported by their coworkers are more likely to stay with a company over the long run (Hodson, 2004; Moynihan & Pandey, 2008).
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A gold atom has a radius of 145 pm. if you could string gold atoms like beads on a thread, how many atoms would you need to have a necklace 36.0 cm long?
[tex]1.17\times 10^{9 }[/tex]atoms would you need to have a necklace 36.0 cm long.
The radius of the gold atom = 145pm
The diameter of gold atom = 2[tex]\times[/tex]145pm
= 290Pm
[tex]=290\times10^{-10} cm[/tex]
gold atoms = [tex]34cm/290\times10^{-10}cm[/tex]
= [tex]1.17\times 10^{9}[/tex] atoms will be find in 36.0 cm necklace
Atomic radius is the distance from the nucleus to the edge of the atom
atomic radius decreases as we go across the periodic table
electronegativity is ability of an atom to attract electrons when the atom is in a chemically combined compound
Atomic Radius : Group Trend: as we go down a column, atomic radius increases.
Periodic Trend: as we go across a period, (L to R), atomic radius decreases.
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A fertilised egg (zygote) has a diameter of 0.01 cm. At birth the average baby measures 50 cm in length. Calculate the change in order of magnitude of length from fertilisation to birth.
does anyone know the answer??
Differences in size are often described as differences in the order of magnitude. That's the difference calculated in factors of 10.
At the time of fertilization-
0.01cm = 1/100 = [tex]10^{-2}[/tex]
At the time of birth-
50cm = 5 × [tex]10^{1}[/tex]
Meaning there is 3 order of magnitude between the egg(zygote) (0.01cm) and child after the birth ( 50cm ).
Notice that when dividing numbers in standard form, we subtract the powers.
When comparing orders of magnitude, actual distances can be approximated. It’s the relative difference that is important.
Hence, the change in the order of magnitude of length from fertilization to birth of a child is 3 ( three )
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