Use the drop-down menus to complete the passage.
Some forms of elements are isotopic and can decay. We make use of these
by using them in ways
to help image tissue or to treat it. We can couple a radioisotope to an element or compound to localize at certain
tissues in question, to help image it by detecting the molecule; this is known as a(n)
When the same type
of technique is applied but the purpose is to target something like a tumor and treat it with the radiation produced, we
call this substance a
. Nuclear medicine, whether used in diagnosis or to treat, involves the
use of
so the amount of
that is received by the patient should be considered.
Answer:
The correct answers are as follows:
1. RADIONUCLIDES.
Radionuclides refers to an atom, which has excess energy that makes it to be unstable. The excess energy can be emitted inform of gamma rays, beta particles or alpha particles. These emissions are ionizing radiations which are used in various ways.
2. TRACER.
In nuclear medicine, a tracer refers to a chemical compound that can be used to explore the chemical reaction mechanisms by tracing the path of the chemical reaction. radioactive tracers are usually injected into the blood stream and use to monitor the biochemical reactions taking place in the body.
3. RADIOPHARMACEUTICALS.
Radiopharmaceuticals refers to a group of pharmaceutical drugs which are radioactive in nature. It is usually made up of a radioactive substance and an organic molecule. They are usually given to patients and monitored through imaging equipment for diagnosis or therapeutic purposes.
4. IONIZING RADIATION.
Ionizing radiations refers to those radiations that have the sufficient energy capacity to cause ionization in the medium they pass through. Ionization involves removing an electron from another atom. Ionizing radiations can cause damages to human tissues.
5. DOSAGE.
Ionizing radiation dosage refers to the amount of ionizing radiation that is applied to a particular part of the body. Radiation dose is measured in different ways, which include: absorbed dose, equivalent dose and effective dose. The amount of ionizing dosage given to human should always be considered in order to avoid damage to body tissues.
Explanation:
Answer:#1:radionuclides
#2:tracer
#3:radiopharmaceutical
#4:ionizing radiation
#5:dosage
Explanation:
Which statement is true of a catalyst in a reaction?
A. It acts as a reactant, in place of the original reactant.
B. It gets used up in the reaction.
C. It changes the activation energy required for the reaction.
D. It makes a reaction faster by adding energy.
Answer:
Hello There!!
Explanation:
The answer is=>C. It changes the activation energy required for the reaction.
hope this helps,have a great day!!
~Pinky~
The true statement for a catalyst used in a reaction is that it makes a reaction faster by adding energy. The correct option is D.
What is a catalyst?A catalyst is a substance that increases the chemical reaction rate without undergoing any permanent chemical change in itself. It makes the reaction faster.
The correct option is D.
Learn more about catalyst.
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which is more bussin? mcdonald’s or taco bell
Answer:
Coming from my perspective sence I see the lines are super long during lunch I would have to say McDonald’s
Tristan is an engineer working on a design for a new roller coaster. He wants the car to shoot out of the station very fast but needs a superconductor to be able to accomplish this. He is looking at different materials to use on the tracks of the roller coaster. What is necessary for his material to function as a superconductor? Check all that apply. ОТ< То a solid metal conductivity a very cold temperature a low boiling point no resistance
Answer:
Superconducting materials can transport electrons with no resistance, and hence release no heat, sound, or other energy forms. Superconductivity occurs at a specific material's critical temperature (Tc). As temperature decreases, a superconducting material's resistance gradually decreases until it reaches critical temperature. At this point resistance drops off, often to zero, as shown in the graph at right.
Explanation:
What is the formula to determine the mass of the Earth?
Answer:
Here ya gooooooooooooooo
Explanation:
sefamchsgaevfdkahsgevfjahgswevfjahsgefvjashgvf
What is the name of the scientist and science fiction writer: *
1: Which person is not doing work?
O A. A person climbing a hill
O B. Someone climbing stairs
O C. A person lifting a bag of sand
O D. A person holding a baby
Answer:
D
Explanation:
What is density????????????
A 6.80 $\mu C$ particle moves through a region of space where an electric field of magnitude 1230 N/C points in the positive $x$ direction, and a magnetic field of magnitude 1.32 T points in the positive $z$ direction. If the net force acting on the particle is 6.18E-3 N in the positive $x$ direction, calculate the magnitude of the particle's velocity. Assume the particle's velocity is in the $x$-$y$ plane.
Answer:
v = -227.785 m/s
Explanation:
The electric field exerts the following force on the electric particle:
F = qE
[tex]F = 6.65 \times 10^{-6} \times 1230[/tex]
[tex]F = 0.0081795 \ N[/tex]
The magnetic field exerts the following force on the particle::
F = qvB
[tex]F = 6.65\times 10^{-6} \times v \times 1.32[/tex]
[tex]F = 8.778 \times 10^{-6} \times v[/tex]
Total force acting is:
F = qvB + qE
[tex]6.18 \times 10^{-3} = 0.0081795 + 8.778 \times 10^{-6} \times v[/tex]
[tex]v = \dfrac{6.18 \times 10^{-3} -0.0081795 }{8.778 \times 10^{-6}}[/tex]
v = -227.785 m/s
PLEASE HELP MEE PLEASE!
Answer;
gram
Explanation
1 question: what is the i.v and d.v for each scenario?
2 question: write a hypothesis for each scenario
3 question: write a conclusion for each scenario
Answer:
Explanation:
The IV is the dose given and the DV is the intensity and frequency of symptoms. The intensity and frequency of symptoms “depends” on the dose of drug given. Example 4: You are studying how tutoring affects SAT scores. Your independent variable(IV) is tutoring and the dependent variable(DV) is test scores.
an example of a household appliance with a low and high power rating
Answer:
Explanation:
There are countless household appliances in every single house. One appliance with a low power rating would be a ceiling fan. On average ceiling fans consume roughly 60w and are found in the majority of houses. On the other side of the spectrum, we have a high power-rating appliance such as a microwave. Microwaves use anywhere between 1000w to 1800w of power in order to function correctly. This is very large power consumption and one of the highest power ratings found for appliances in a household.
What is the equivalent resistance of the circuit pictured below?
Answer:
450 since in series we add the resistance
really simple science packet, i just need help it’s due tomorrow. thank y’all :)
Answer:
13: (Im not sure sorry)
14: C
15: B
16: B
17: B
18: B
A 25 MGD surface water drinking plant has four circular clarifiers (aka sedimentation basin), operated in parallel with each basin receiving equal flow, that all have a diameter of 16 meters and are 3 m deep. Assume that all particles entering the clarifiers have the same particle density of 1.2 mg/mL and the average water temperature is 20 oC with an average viscosity of 1 g/(m*s) and an average density of 998.2 kg/m3.
1. What is the diameter of the smallest particles (in mm) that can be removed by these clarifiers?
2. If the each of the four clarifiers is to be rectangular in shape with a length to width ratio of 5:1, what is the minimum width that each clarifier can be (in meters)?
Answer:
can y
Explanation:
jj
The smallest particles that can be removed by these clarifiers have a diameter of 0.0257 mm, and the minimum width of a rectangular clarifier with a length-to-width ratio of 5:1 is 0.023 times the length.
What is the equation for the settling velocity of a particle?The equation for the settling velocity of a particle:
V_s = (2/9) * (ρ_p - ρ_w) * g * r^2 / η
where V_s is the settling velocity, ρ_p is the particle density, ρ_w is the water density, g is the acceleration due to gravity, r is the particle radius, and η is the water viscosity.
1. We can rearrange the equation to solve for the particle radius:
r = [9ηV_s / (2(ρ_p - ρ_w)g)]^(1/2)
We want to find the particle diameter, which is twice the radius, so we can substitute 2r for d in the following equation:
d = 2r = 2[9ηV_s / (2(ρ_p - ρ_w)g)]^(1/2)
To remove the smallest particles, we want to use the smallest settling velocity possible, which corresponds to a particle just barely settling to the bottom of the clarifier. Therefore, we can set V_s equal to the minimum settling velocity required for particles to be removed:
V_s = Q / (A * X)
where Q is the flow rate (25 MGD), A is the surface area of one clarifier (πr^2), and X is the overflow rate, which is the flow rate per unit area of the clarifier. A typical overflow rate for a sedimentation basin is 600-1200 gallons per day per square foot (gpd/ft^2), or 2.5-5 m^3/day/m^2. We will use the lower end of this range, 2.5 m^3/day/m^2.
Substituting in the values for Q, A, and X, we get:
V_s = (25 MGD) / (π(8 m)^2 * 2.5 m^3/day/m^2) = 0.00159 m/s
Now we can substitute the values for η, ρ_p, ρ_w, g, and V_s into the equation for the particle diameter:
d = 2[9(1 g/(m*s))(0.00159 m/s) / (2(1200 kg/m^3 - 998.2 kg/m^3)(9.81 m/s^2))]^(1/2) = 0.0257 mm
So, the smallest particles that can be removed by these clarifiers have a diameter of approximately 0.0257 mm.
2. To find the minimum width of a rectangular clarifier with a length-to-width ratio of 5:1, we can use the same overflow rate and flow rate as before, and we can assume a depth of 3 m. The surface area of one clarifier must still be the same as before, so we can use the equation for the surface area of a rectangle:
A = L * W
where L is the length and W is the width.
Substituting in the values for Q, X, and A, we get:
W = (25 MGD) / (5 * 24 hr/day * 60 min/hr * 60 s/min * 2.5 m^3/day/m^2 * 5 * L)
Simplifying, we get:
W = 0.023 L
So, the minimum width of a rectangular clarifier with a length-to-width ratio of 5:1 is 0.023 times the length.
Therefore, The smallest particles that can be removed by these clarifiers have a diameter of 0.0257 mm, and a rectangular clarifier's minimum width is 0.023 times the length when the length-to-width ratio is 5:1.
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On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3 , length 95.0 cm and diameter 2.00 cm from a storage room to a machinist. Calculate the weight of the rod, w. Assume the free-fall acceleration is g
Answer:
[tex]22.84\ \text{N}[/tex]
Explanation:
[tex]\rho[/tex] = Density = [tex]7800\ \text{kg/m}^3[/tex]
h = Length of rod = 95 cm
d = Diameter of rod = 2 cm
r = Radius = [tex]\dfrac{d}{2}=1\ \text{cm}[/tex]
g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]
V = Volume of rod = [tex]\pi r^2h[/tex]
Mass is given by
[tex]m=V\rho[/tex]
Weight is given by
[tex]w=mg=V\rho g\\\Rightarrow w=\pi r^2h\rho g\\\Rightarrow w=\pi\times (1\times 10^{-2})^2\times (95\times 10^{-2})\times 7800\times 9.81\\\Rightarrow w=22.84\ \text{N}[/tex]
The weight of the rod is [tex]22.84\ \text{N}[/tex].
the driving force on the train was 12000N how large must be the force applied in order to stop the train
Answer:
Anywhere above 12000N in order to decelerate the train since F=mass*acceleration
16. Using the formula P = V x I, find the amount of power flowing through a circuit carrying a current of 20 amperes at a potential difference of 120 volts.
O A 2400 Watts
B. 6 Watts
C. 1200 Watts
D. 24 Watts
anomalous expansion of water
Answer: Anomalous Expansion of water & its effects When water is heated from 00C to 40C it contracts continously instead of expanding. Conversely expands when cooled down from 40C to 00C . This expansion of water from 40C to 00C is called anomalous expansion. When heated from 40C to 1000C its expansion is normal like the expansion of other liquids. Since water contracts when heated from 00C to 40C and expands from 40C to 1000C , its volume is smallest and the density is maximum at 40C. Hence water is heaviest at 40C.
provides some pertinent background for this problem. A pendulum is constructed from a thin, rigid, and uniform rod with a small sphere attached to the end opposite the pivot. This arrangement is a good approximation to a simple pendulum (period = 0.61 s), because the mass of the sphere (lead) is much greater than the mass of the rod (aluminum). When the sphere is removed, the pendulum no longer is a simple pendulum, but is then a physical pendulum. What is the period of the physical pendulum?
Answer:
the period of the physical pendulum is 0.498 s
Explanation:
Given the data in the question;
[tex]T_{simple[/tex] = 0.61 s
we know that, the relationship between T and angular frequency is;
T = 2π/ω ---------- let this be equation 1
Also, the angular frequency of physical pendulum is;
ω = √(mgL / [tex]I[/tex] ) ------ let this equation 2
where m is mass of pendulum, L is distance between axis of rotation and the center of gravity of rod and [tex]I[/tex] is moment of inertia of rod.
Now, moment of inertia of thin uniform rod D is;
[tex]I[/tex] = [tex]\frac{1}{3}[/tex]mD²
since we were not given the length of the rod but rather the period of the simple pendulum, lets combine this three equations.
we substitute equation 2 into equation 1
we have;
T = 2π/ω OR T = 2π/√(mgL/[tex]I[/tex]) OR T = 2π√([tex]I[/tex]/mgL)
so we can use [tex]I[/tex] = [tex]\frac{1}{3}[/tex]mD² for moment of inertia of the rod
Since center of gravity of the uniform rod lies at the center of rod
so that L = [tex]\frac{1}{2}[/tex]D.
now, substituting these equations, the period becomes;
T = 2π/√([tex]I[/tex]/mgL) OR T = [tex]2\pi \sqrt{\frac{\frac{1}{3}mD^2 }{mg(\frac{1}{2})D } }[/tex] OR T = 2π√(2D/3g ) ----- equation 3
length of rod D is still unknown, so from equation 1 and 2 ( period of pendulum ),
we have;
ω[tex]_{simple[/tex] = 2π/[tex]T_{simple[/tex] OR ω[tex]_{simple[/tex] = √(g/D) OR ω[tex]_{simple[/tex] = 2π√( D/g )
so we simple solve for D/g and insert into equation 3
so we have;
T = √(2/3) × [tex]T_{simple[/tex]
we substitute in value of [tex]T_{simple[/tex]
T = √(2/3) × 0.61 s
T = 0.498 s
Therefore, the period of the physical pendulum is 0.498 s
PLEASE How much voltage is required to run 1.6 A of current through a 2400 resistor? Use AV = IR.
A. 2.6 x 10-3 v
B. 6.7 x 10-3 v
C. 380 V
D. 150 V
Explanation:
[tex]from \: ohms \: law \\ voltage \: \: V =IR \\ = 1.6 \times 2400 \\ = 3840 \: Volts[/tex]
Answer:
is it 380
Explanation:
What are fossil fuels composed of
Oxygen and carbon
Rocks under extreme pressure
Remains of living things
Answer:
C. Remains of living things
Explanation:
They are made up of dead animals or plants. Coal, Oil, and Natural Gas are the three types of fossil fuels and all of them come from dead organisms. Even the name Fossil Fuels, sounds like a name for something like this.
Hope this Helps ʕ•ᴥ•ʔ
Answer:
C
Explanation:
took the test
How much energy is supplied to a 9 V bulb if it is switched on for 3 minutes and takes a current of
0.2 A ?
Answer:
324J is the energy supplied
Answer:
hey hind the answer is 324 J
Explanation:
what is the speed of electron having the same kinetic energy with photon speed 0.006c?
Answer:
if gossipy egg overriding successors spatial
A bicycle pump contains 200 cm3 of air and is connected to a bicycle tyre. The volume of the tyre is 800 cm3. The pressure of the air in the tyre (it is ‘flat’) is 1.0 atmosphere, the same as the air in the pump. (= volume1). What is the total volume of the air initially?
Please help me
Answer:
The total volume of the air is 1000 cubic centimeters.
Explanation:
Since the bicycle pump and the bicycle tyre have the same pressure, then the total volume of the air is the sum of the volume of each element, then we translate this into the following artihmetical expression:
[tex]V = 200\,cm^{3}+800\,cm^{3}[/tex]
[tex]V = 1000\,cm^{3}[/tex]
The total volume of the air is 1000 cubic centimeters.
A reaction where the consequences of a reaction cause a succeeding like reaction is called a mass reaction .
Answer:
not 100% sure what you were asking.
Explanation:
A reaction where the consequences of a reaction cause a succeeding like reaction is called a chain reaction.
Sound is a longitudinal wave that travels at speed 343343m/s in dry air at room temperature and standard pressure. Your ear is capable of differentiating sounds that arrive at the ear just 1.00 milliseconds apart. What is the minimum distance between two speakers that produce sounds that arrive at noticeably different times
Answer:
d = 0.343 m
Explanation:
Given that,
The speed of a longitudinal wave, v = 343 m/s
Your ear is capable of differentiating sounds that arrive at the ear just 1.00 milliseconds apart.
We need to find the minimum distance between two speakers that produce sounds that arrive at noticeably different times.
Let the distance be d. So,
[tex]d=v\times t\\\\=343\times 10^{-3}\\\\=0.343\ m[/tex]
So, the required distance is equal to 0.343 m.
____ is the amount of matter an object and the mass of an _____ does not change location.
Answer:
Mass
Object
Explanation:
Answer:
Mass is the amount of matter in an object and the mass of an object does not change location.
A Boulder drops in the water and creates a wave with a period of 2s/cycle and a wavelength of .75 m/cycle. How fast is the wave moving ?
Answer:
v = 0.375 m/s
Explanation:
Given that,
The wavelength of a wave is 0.75 m/cycle
The period of a wave is 2s/cycle
We need to find the speed of the wave. We know that,
[tex]v=\dfrac{d}{t}[/tex]
Substitute all the values,
[tex]v=\dfrac{0.75}{2}\\\\v=0.375\ m/s[/tex]
So, the speed of the wave is equal to 0.375 m/s.
How do lenses and mirrors compare in their interactions with light?
A. Lenses spread light apart; mirrors do not.
B. Lenses bounce light from their surface; mirrors do not.
C. Lenses bring light to a point; mirrors do not.
D. Lenses bend light as it passes through; mirrors do not.
Answer:
B.lenses bounce light from their surface, mirrors do not