Delivery of medicines to particular organ or tissue in a human body with the help of a direct current is named electrophoresis. in this case, two oppositely charged plates are applied to the body. (a) find charge that passes through the body during 10 min electrophoresis procedure if current used was =8 ma. (b) find current density value if electrodes area was = 150×180 cm2
Answers
The charge that passes through the body during a 10-minute electrophoresis procedure with a current of: 8 mA is 4.8 Coulombs, and the current density value with an electrode area of 150x180 cm² is approximately 0.296 A/m².
The delivery of medicines to a specific organ or tissue in the human body using a direct current is known as electrophoresis. In this case, two oppositely charged plates are applied to the body.
(a) To find the charge that passes through the body during a 10-minute electrophoresis procedure with a current of 8 mA, you can use the formula: Charge (Q) = Current (I) × Time (t). Since the current is given in milliamperes (mA), you'll need to convert it to amperes (A) by dividing by 1,000: 8 mA / 1,000 = 0.008 A.
The time is given in minutes, so convert it to seconds: 10 minutes × 60 seconds/minute = 600 seconds. Now, you can find the charge: Q = 0.008 A × 600 s = 4.8 Coulombs.
(b) To find the current density, you'll need to use the formula: Current Density (J) = Current (I) / Area (A). The electrode area is given as 150 x 180 cm², so you need to convert it to square meters: (150 x 180 cm²) / (10,000 cm²/m²) = 0.027 m². Now you can find the current density: J = 0.008 A / 0.027 m² ≈ 0.296 A/m².
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Related Questions
Why would the solstice be important to
an ecosystem?
Answers
Answer:
marks an important milestone. It's the shortest day of the year and the longest night of the year, and signals a powerful transition point between seasons that is impossible to ignore. ... In Pagan times the winter solstice was referred to as Yule and was a celebration of the Goddess (Moon) energy
Explanation:
Circle the letter of each sentence that is true about calculating the
acceleration of a moving object.
A.) If an object is moving without changing direction, then its acceleration is the change in its speed during one unit of time.
B.) If an object's speed changes by the same amount during each unit of
time, then the acceleration of the object at any time is the same.
C.) To determine the acceleration of an object, you must calculate the
change in velocity during only one unit of time.
D.) If an object's acceleration varies, then you can describe only average
acceleration.
Answers
Answer: D
Explanation:
What does DARE stand for in balanced and unbalanced forces
Answers
Answer:
Balanced Forces
But what exactly is meant by the phrase unbalanced force? What is an unbalanced force? In pursuit of an answer, we will first consider a physics book at rest on a tabletop. There are two forces acting upon the book. One force - the Earth's gravitational pull - exerts a downward force. The other force - the push of the table on the book (sometimes referred to as a normal force) - pushes upward on the book.
Since these two forces are of equal magnitude and in opposite directions, they balance each other. The book is said to be at equilibrium. There is no unbalanced force acting upon the book and thus the book maintains its state of motion. When all the forces acting upon an object balance each other, the object will be at equilibrium; it will not accelerate.
Consider another example involving balanced forces - a person standing on the floor. There are two forces acting upon the person. The force of gravity exerts a downward force. The floor exerts an upward force.
Since these two forces are of equal magnitude and in opposite directions, they balance each other. The person is at equilibrium. There is no unbalanced force acting upon the person and thus the person maintains its state of motion.
Unbalanced Forces
Now consider a book sliding from left to right across a tabletop. Sometime in the prior history of the book, it may have been given a shove and set in motion from a rest position. Or perhaps it acquired its motion by sliding down an incline from an elevated position. Whatever the case, our focus is not upon the history of the book but rather upon the current situation of a book sliding to the right across a tabletop. The book is in motion and at the moment there is no one pushing it to the right. (Remember: a force is not needed to keep a moving object moving to the right.) The forces acting upon the book are shown below.
The force of gravity pulling downward and the force of the table pushing upwards on the book are of equal magnitude and opposite directions. These two forces balance each other. Yet there is no force present to balance the force of friction. As the book moves to the right, friction acts to the left to slow the book down. There is an unbalanced force; and as such, the book changes its state of motion. The book is not at equilibrium and subsequently accelerates. Unbalanced forces cause accelerations. In this case, the unbalanced force is directed opposite the book's motion and will cause it to slow down.
To determine if the forces acting upon an object are balanced or unbalanced, an analysis must first be conducted to determine what forces are acting upon the object and in what direction. If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.
A point charge produces an electric flux of +305 N⋅m2/C through a gaussian sphere of radius 15.0 cm centered on the charge. a What is the flux through a gaussian sphere with a radius 29.0 cm ?b What is the magnitude of the charge?
Answers
Given
The electric flux is
\(\phi=+305\text{ Nm}^2\text{ /C}\)Radius of the sphere,
\(r=15.0\text{ cm}\)To find
a. The flux through a gaussian sphere with radius of 29.0 cm.
b. The magnitude of the charge
Explanation
a. Since the gaussian sphere covers the same charge so the electric flux through both the sphere will be same.
Thus the required flux is
\(\phi=305\text{ Nm}^2\text{ /C}\)b.
The magnitude of the charge is
\(\begin{gathered} Q=\phi\epsilon_o \\ \Rightarrow Q=305\times8.85\times10^{-12} \\ \Rightarrow Q=30.97\times10^{-12}\text{ C} \end{gathered}\)Conclusion
a. The flux is
\(305\text{ Nm}^2\text{ /C}\)b. The charge is
\(30.97\times10^{-12\text{ }}C\)Why does eating less meat conserve more water than just eating plants?
Answers
Answer:
Studies show that eating fewer animal-based products could reduce water use since animal production uses more water than crops do. In addition, reducing the amount of food that's lost or wasted at various points in the food supply chain could feed about 1 billion extra people while simultaneously reducing water use.
Every food and beverage product we consume: from soda to pineapples to cheese crackers and pork chops, etc. requires water for its production. Obviously, fruits and veggies need water. That’s a given, but surprisingly, there is another group of foods that is the biggest water guzzler of them all and that is animal products. Meat, dairy, and eggs require more water to “produce” than any other food out there.
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A 0.18 kg plastic ball moves with a velocity of 0.39 m/s. It collides with a second plastic ball of mass 0.016 kg, which is moving along the same line at a speed of 0.05 m/s. After the collision, both balls continue moving in the same, original direction. The speed of the 0.016 kg ball is 0.26 m/s. What is the new velocity of the 0.18 kg ball?
Answers
The new velocity of the 0.18 kg ball, given that it's initial velocity was 0.39 m/s is 0.37 m/s
How do I determine the velocity of the 0.18 kg ball after collision?The following data were obtained from the question:
Mass of first ball (m₁) = 0.18 KgInitial velocity of first ball (u₁) = 0.39 m/sMass of second ball (m₂) = 0.016 KgInitial velocity of second ball (u₂) = 0.05 m/sNew velocity of second (v₂) = 0.26 m/sNew velocity of first ball (v₁) = ?The new velocity of the first ball (0.18 Kg) can be obtained as follow:
Momentum before = Momentum after
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(0.18 × 0.39) + (0.016 × 0.05) = (0.18 × v₁) + (0.016 × 0.26)
0.0702 + 0.0008 = 0.18v₁ + 0.00416
Collect like terms
0.18v₁ = 0.0702 + 0.0008 - 0.00416
0.18v₁ = 0.06684
Divide both sides by 0.18
v₁ = 0.06684 / 0.18
v₁ = 0.37 m/s
Thus, the new velocity of the 0.18 Kg ball is 0.37 m/s
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When a hybrid car brakes to a stop much of its kinetic energy is transformed to a) heat b) work c) electric potential energy
Answers
When a hybrid car brakes to a stop, much of its kinetic energy is transformed into different forms of energy. One of the primary forms of energy that is produced during this process is heat. As the brakes of the car are applied, the friction between the brake pads and the wheels creates heat. This heat is then dissipated into the air around the car, resulting in a loss of energy.
Hybrid cars are designed to capture some of this lost energy and convert it into useful forms of energy that can be used to power the car. In many cases, the kinetic energy that is lost during braking is converted into electric potential energy, which is then stored in the car's battery. This energy can then be used to power the car's electric motor, which in turn can help reduce the car's overall fuel consumption.
It is through the conversion of kinetic energy into electric potential energy or the conversion of energy into work, hybrid cars are a great example of how technology can be used to improve the efficiency of vehicles and reduce their environmental impact.
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can the answer to density be simplified
Answers
Answer: yes because all densities can be simplifed it just depends on the number.
In the following schemes, name which corresponds to the phenomenon of reflection, which to the phenomenon of refraction, and which to the phenomenon of diffraction
Answers
Starting from the left the first is reflection, the second is refraction, while the last is diffraction
what is reflection?This is when a travelling wave changes direction to bounce back when the wave struck a barrier. This phenomenon is used in the science utilized in lighting. Reflectors are used to through the light to various directions to suit the purpose used. The reflectors are usually made of silvery surface.
The phenomenon corresponding to this is the first from the left. The diagram shows that the travelling wave did not pass through the barrier however it bounced backward.
What is refraction?this is the term used to refer to a phenomenon whereby a travelling wave changes direction of propagation when the wave travels from one medium to another. The two media at play usually have different densities for refraction to take place.
from the figure, the second from the left depicts refraction. The travelling wave changed direction when it enters a different medium of different density.
What is diffraction?Diffraction is the phenomenon where by a travelling wave spreads out when then it encounters a barrier or an opening
The third image from the left represents the spread out associated with diffraction.
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how to test a zener diode with a digital multimeter
Answers
To test a Zener diode with a digital multimeter, follow these steps:
1. Turn off the power supply to the circuit.
2. Set your multimeter to the diode test mode. This is usually represented by a diode symbol on the multimeter dial.
3. Connect the black probe of the multimeter to the cathode end of the Zener diode and the red probe to the anode end of the diode.
4. Check the voltage reading on the multimeter. If the voltage reading is zero, the Zener diode is not conducting and is faulty. If the voltage reading is close to the Zener voltage rating, the Zener diode is good.
5. Reverse the probes and repeat the test. The voltage reading should be close to zero volts. If the voltage reading is still close to the Zener voltage rating, the Zener diode is faulty.
Note: Be sure to consult the datasheet of the Zener diode you are testing to ensure that you are using the correct voltage rating.
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How are water scarcity and water pollution related?
Water pollution contributes to water scarcity.
Water pollution is a solution to water scarcity.
Water scarcity is a solution to water pollution.
Water scarcity contributes to water pollution.
Answers
Answer:
A. Water pollution contributes to water scarcity.
Explanation:
Water pollution occurs when materials are disposed in water body, thus making it unfit for use. A polluted water can not be used for various purposes that water can be used for. Examples include: recreation, drinking, washing etc.
Water scarcity is the situation when available water is not sufficient for the use of organisms in a community. This majorly occurs in arid area.
Thus, since a polluted water renders water to be useless, therefore water pollution contributes to water scarcity.
Answer:
Water contributes to water scarcity
Explanation:
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A pendulum bob swings along its characteristic arc as shown. Rank the gravitational potential energy of the pendulum bob at the three marked locations
Answers
Answer:
Gravitational potential energy is the maximum at point C and lowest at point A
Explanation:
The image for the question is provide in the attached file
The energy of pendulum is governed by mechanical energy. Mechanical energy is the sum of potential energy and kinetic energy
Potential energy increases with increasing height. Thus, when the pendulum bob is at maximum height, then its potential energy is also the highest.
Thus, At point C, the gravitational potential energy is the highest
At point A, the gravitational potential energy is substantial but lower than that of gravitational potential energy at point C
AT point A, gravitational energy is the lowest
all waves have which four characteristics
Answers
Answer:it is a
Explanation:because No matter whether you are talking about vibrations or waves, all of them can be characterized by the following four characteristics: amplitude, wavelength, frequency, and speed.
Answer:
A
Explanation:
These 4 are the main characteristics which you should have learned in your class. Hope it helps!
What is the speed of a car at rest?
Answers
The potential energy of an apple is 6.0 Joules. The apple is 1.22m high. What is the mass of the apple?
Answers
Answer:
The mass of the apple is 0.49kg
Explanation:
Potential energy=mgh
P=mgh
6=m×1.22×10
6=12.2m
divide both sides by 12.2
m=6/12.2
m=0.49kg
Is a shadow a real or a virtual image? Thank you!
Answers
Answer:
Virtual image..................
The length of a road is 35.5cm what will be the length in meters?
Answers
안녕하세요
answer is 355 meters ...
Answer:
0.355m
Explanation:
To convert from cm to m, divide by 100
35.5÷100=0.355m
A block of copper with a mass of 0.94 kg has 24,600 J of thermal energy removed from it. How much does its temperature change?
Answers
To find the change in temperature, we can use the following formula:
ΔT = Q / (m * c)
where ΔT is the change in temperature, Q is the amount of thermal energy removed, m is the mass of the copper block, and c is the specific heat capacity of copper.
Substituting the given values, we get:
ΔT = 24,600 J / (0.94 kg * 0.385 J/g°C)
ΔT = 65.42°C
Therefore, the temperature of the copper block would decrease by approximately 65.42°C when 24,600 J of thermal energy is removed from it.
help me with this question plz
Answers
Answer:
Greatest position of the ball are z
What is the displacement of a car in 50 s if it is travelling with a velocity of 25 m/s?
Answers
Answer:
v =25 m/s
time= 50 s
Velocity =Displacement/Time
Displacement = Velocity × Time
S = 25×50
s=1250m
Explanation:
v =25 m/s
time= 50 s
Velocity =Displacement/Time
Displacement = Velocity × Time
Define Eukaryote cells and Prokaryote cells
Answers
Answer:
Ekaryote cells
an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus. Eukaryotes include all living organisms other than the eubacteria and archaea.
prokaryote cells
microscopic single-celled organism which has neither a distinct nucleus with a membrane nor other specialized organelles, including the bacteria and cyanobacteria
One liter is equal to 100 milliliters true or false
Answers
Answer:
No, a liter is equal to 1000 milliliters
ITS FALSE DUDE ......
HOPE THIS HELPS
A ______________ is a continuous flow of water in a single direction. *
Answers
Answer:
Current
Explanation:
I think srry if im wrong
Answer: A River system
Explanation: A ___________ is a network of streams that drain an area of land and contains all of the land drained by a river including the main river and all its smaller streams or rivers that flow into larger ones, or tributaries (Source Quizlet)
what distance did the person move from t= 0 s to t= 4.0 s ?
Answers
The distance that the person moved from t= 0 s to t= 4.0 s will depend on the velocity of the person during that time interval.
Without knowing the velocity or speed, it is not possible to determine the distance that the person moved. If the velocity or speed is constant, the distance can be calculated using the formula.
d = v*t
Where d is the distance, v is the velocity or speed, and t is the time. For example, if the person was moving at a constant speed of 2 m/s, the distance moved from t= 0 s to t= 4.0 s would be d = 2 m/s * 4.0 s = 8.0 m. However, if the velocity or speed is not constant, the distance will need to be calculated using a different method, such as integrating the velocity or speed over the time interval.
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Which one is right??
Answers
Answer:
Evaporation of water
Explanation:
\(\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}\)
ur answer is
Evaporation of water.
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Answers
Answer:
Answer:
Debt payments to income ratio = 22.74%
Explanation:
Debts payment to Income ratio is calculated as follows:
= \frac{Total\ debt\ payment}{Total\ Income}
Total Income
Total debt payment
We have total debts payment = auto loan payment 685 + student loan payment685+studentloanpayment375 + credit card payment 125 =125=1,185
Total Income = $5,210
Note: Credit card is also a kind of debt as firstly all the expenses are met during the period and then the payment is made at the end of the period, therefore, there is a loan in the period. Therefore, it will be considered for payment of debt.
Debt payments to income ratio = \frac{1,185}{5,210} = 22.74
5,210
1,185
=22.74
That means the debts are 22.74% of income.
What are the scientific principles of physical science
Answers
Answer:
Describing and measuring motion. Newton's laws of motion. Forces, weight, and mass. Momentum and conservation of momentum.
The theory of gravity.
Energy, work, and power. Motion, position, and energy.
Explanation:
Answer:
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Explanation:
The volume of a cylinder is v=πR^2H where R =radius and h= height. If the radius is 3 times the height and the volume increases at 10cm/s. How fast does the radius increase when the radius 6 cm
Answers
The rate at which the radius increases when the radius is 6 cm is approximately 0.056 cm/s.
At a radius of 6 cm, how fast does the radius increase?To determine how fast the radius increases, we can use the given information about the volume of a cylinder and its rate of change. The volume of a cylinder is given by the formula v = πR²H, where R represents the radius and H represents the height.
Given that the radius is three times the height, we can express the height as H = R/3. Substituting this value into the volume equation, we have v = πR²(R/3). Simplifying further, the volume equation becomes v = (π/3)R³.
Now, we are given that the volume increases at a rate of 10 cm/s. By taking the derivative of the volume equation with respect to time, we can determine how the radius changes over time. The derivative, dv/dt, is equal to (π/3)(3R²)(dR/dt), where dR/dt represents the rate of change of the radius.
Simplifying the equation, we have dv/dt = πR²(dR/dt). Substituting the given values, we have 10 cm/s = π(6²)(dR/dt).
Solving for dR/dt, we find that the rate at which the radius increases when the radius is 6 cm is approximately 0.056 cm/s.
Calculus and related concepts to explore the relationships between variables and their rates of change. Understanding these mathematical principles is essential for analyzing dynamic systems and their behaviors.
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Mitzy has a temperature of 109 degrees celsius. How much more is this from her normal body temperature?
Answers
So, this is 72 degrees away from the normal body temp.
An object is moving north at a constant speed. A force of 5 N begins to push the object east at the same moment that a force of 5 N begins to push it west. What will happen to the object?
O The object will turn toward the west
O The obectvil don down and stop. Bart
O The object will continue moving north.
Answers
The object will move forward (north). The two forces are equal and opposite, so they cancel each other out. This is known as Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.