The electrostatic force between an electron and a proton separated by 0.1 mm is -2.3 × 10^-28 N.
The electrostatic force between an electron and a proton separated by 0.1 mm can be calculated using Coulomb's Law. Coulomb's Law states that the electrostatic force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
Mathematically, Coulomb's Law can be represented as: F = (k * q₁ * q₂) / r²Where,F is the electrostatic force between two charged particles q₁ and q₂ are the charges on the particles r is the distance between the particles k is Coulomb's constant, equal to 9 × 10^9 N·m²/C²
When an electron and a proton are separated by 0.1 mm, the distance between them can be converted to meters by dividing it by 1000. So, r = 0.1 mm = 0.1 × 10^-3 m = 1 × 10^-4 m
The charge on an electron is -1.6 × 10^-19 C and the charge on a proton is +1.6 × 10^-19 C. Therefore,q₁ = -1.6 × 10^-19 Cq₂ = +1.6 × 10^-19 C
Substituting the values of k, q₁, q₂, and r in Coulomb's Law, we get:F = (9 × 10^9 * -1.6 × 10^-19 * 1.6 × 10^-19) / (1 × 10^-4)²= -2.3 × 10^-28 N
Therefore, the electrostatic force between an electron and a proton separated by 0.1 mm is -2.3 × 10^-28 N.
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3. Someone said, "The goal of the railroad is not to have a
better Operating Ratio, it’s to make more money." Explain how it’s
possible to make more money with a worse Operating Ratio?
While a better Operating Ratio generally indicates higher efficiency and profitability, there are circumstances where focusing on other strategic initiatives, such as infrastructure investments or pricing strategies, can result in increased revenue and ultimately lead to higher profits, even with a temporarily worse Operating Ratio.
While it may seem counterintuitive, it is indeed possible to make more money with a worse Operating Ratio in certain situations. The Operating Ratio is a financial metric used in the railroad industry to measure the efficiency of operations, calculated by dividing operating expenses by operating revenue and expressing it as a percentage. A lower Operating Ratio indicates better cost control and higher profitability.
However, there are scenarios where focusing solely on achieving a better Operating Ratio may not necessarily maximize profits. For instance, a railroad company might strategically invest in infrastructure upgrades or equipment purchases that temporarily increase operating expenses but lead to long-term revenue growth. These investments can be essential for expanding capacity, improving service quality, and attracting more customers, ultimately generating higher overall revenue despite a temporary increase in operating expenses.
Additionally, a railroad may adopt pricing strategies to maximize revenue, even if it negatively impacts the Operating Ratio. This could involve offering discounted rates or incentives to secure long-term contracts with high-volume customers, resulting in lower operating revenue per unit but ensuring a steady and predictable stream of business.
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in which part of the ear does pressure need to be equalized when changing altitude or scuba diving? eustachian tube middle ear auricle ear drum
The middle ear is the part of ear that needs equalisation when changing altitude or scuba diving.
Why does the middle ear need equalisation?The water pressure you are diving through will affect the pressure in your outer ear. The Tympanic Membrane, also known as the "Eardrum," is located between the outer and middle ears. If there is an imbalance in the pressure between the two ears, the Tympanic Membrane will flex, resulting in discomfort or suffering.
The Eustachian Tubes, which are used to blow air into the middle ear, work to counteract this. Since the Eardrum is the only flexible portion of the middle ear, breathing more air into the middle ear will create pressure inside the middle ear, which will then cause the Eardrum to bend back to its original position. As a result, equalisation.
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an object is placed 20.0 cm to the left of a diverging lens. the image of the object is found to be 12.0 cm from the lens on the same side as the object. what is the focal length of the lens?
The distance between a lens or mirror's convex or concave surface and its focal point is known as its focal length.
-6.86 cm and -0.638 cm, respectively, are the image's focal length and height. Consequently, Object is at a distance of u = -16.0 cm. Image distance (v): -12.0 cm. 8.50 mm, or 0.85 cm, is the object's height. Given that f is the focal length, u denotes the object's distance, and v is the image's distance, we must calculate the focal length (a). Inward rotation of the lens It is reversed in the image. As a result, the focus length and image's height are both -0.638 cm and -6.86 cm. It is f for the focal length. It is 16.0 cm away from the item, or p. Q = 12.0 cm separates you from the image (with a negative sign because the image is on the same side as the object, so it is virtual). Because of the drawback, there is lens divergence.
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What is the density of an object with a mass of 40.0g and a volume of 80.0cm3?
Density of liquids and gases.
Data:
d = ?
m = 40.0 g
v = 80.0 cm³
The formula for the density of liquids and gases
d = m/v
Since it asks us to calculate the density, it is not necessary to clear the formula. We just substitute data and solve.
d = 40.0 g/80.0 cm³
d = 0.5 g/cm³
The density of an object with a mass of 40.0 g and a volume of 80.0 cm^3 is 0.5 g/cm^3.terms used to measure motion
Answer:
velocity term
Explanation:
Answer:velocity term
Explanation:
an inductor used in a dc power supply has an inductance of 11.5 h and a resistance of 130.0 ω. it carries a current of 0.300 a.
(A). What is the energy stored in the magnetic field?
(B). At what rate is thermal energy developed in the inductor?
(C). Does your answer to part B mean that the magnetic field energy is decreasing with time?
(i) No. The rate of thermal energy development is zero
(ii) Yes. The rate of thermal energy development is not zero.
(iiI) No. Energy does not come from the energy stored in the inductor
(iv) Yes. Energy comes from the energy stored in the inductor
the Hooke's law interaction of the spring and the mass.
(A) To find the energy stored in the magnetic field of the inductor, we can use the formula:
Energy = (1/2) × Inductance × Current²
where Inductance = 11.5 H and Current = 0.300 A.
Energy = (1/2) × 11.5 H × (0.300 A)²
Energy = 0.5 × 11.5 × 0.09
Energy = 0.5 × 1.035
Energy ≈ 0.518 J (Joules)
(B) To find the rate at which thermal energy is developed in the inductor, we can use the formula:
Power = Resistance × Current²
where Resistance = 130.0 Ω and Current = 0.300 A.
Power = 130.0 Ω × (0.300 A)²
Power = 130 × 0.09
Power ≈ 11.7 W (Watts)
(C) Since the rate of thermal energy development is not zero, it means that the magnetic field energy is decreasing with time. Therefore, the correct answer is:
(ii) Yes. The rate of thermal energy development is not zero.
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A man is lifting a piano that weighs 800 N through a distance of 10 meters using a pulley system. The man pulls the rope a total distance of 100m. What force does the man need to apply to the rope?
Answer:
The force the man applied is 80 N
Explanation:
weight of the load, L = 800 N
distance traveled by the load, a = 10 m
distance traveled by the effort, b = 100 m
Output work = load x distance moved by the load
Output work = 800 x 10 = 8000 J
Input work = Effort x distance moved by effort
Input work = Effort x 100 m
Assuming an ideal machine; no friction effect, the input work will be equal to output work.
Effort x 100 m = 8000 J
Effort = 8000 / 100
Effort = 80 N
Therefore, the force the man applied is 80 N
HELP
A mixture that contains more than one type of matter and is the same throughout is a homogeneous mixture.
TRUE
FALSE
Answer:
True
Explanation:
A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. E.g NaCl and H2O solution
Pendulum mass is 4 kg. Use your equations for gravitational potential energy and kinetic energy to determine these values based on the data given below. Total energy is the sum of gravitational potential energy and kinetic energy. In this problem, round gravity to: g = 10 m/s2.
its should be 2.0 and 4.5 on it
. A 225-kg crate is pushed horizontally with a force of 710 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate
The acceleration of the crate is 1.196 m/s².
What is acceleration?This can be defined as the rate of change of velocity.
To calculate the acceleration of the crate, we use the formula below.
Formula:
a = (F-mgμ)/m................. Equation 1Where:
a = acceleration of the cratem = mass of the crateF = Force applied to the crateμ = Coefficient of frictionFrom the question,
Given:
m = 225 kgF = 710 Ng = 9.8 m/s²μ = 0.20Substitute the values above into equation 1
a = [710-(225×9.8×0.20)]/225a = (710-441)/225a = 269/225a = 1.196 m/s²Hence, The acceleration of the crate is 1.196 m/s²
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Please help me on this I wanna pass so bad
Answer:
what?
Explanation:
theres nothing
Why use gel between the transducer and the patient’s skin?
Answer:
. ... Because ultrasound sound waves have a difficult time traveling through the air, ultrasound gel is used to reduce the air between your patient and the transducer to reduce acoustic impedance and reflection to allow for a clear image to be produced
What is the weight of a 200 kg mass?
Answer:
W 1920 N
Explanation:
200kg at a location where g=9.6m/s^2
if the radius of the circular motion for our mass is 0.33 m, how far does the mass travel during one revolution?
In one revolution the mass will travel with the distance 0.66π.
The revolution number of the tire can be calculated by using the circular motion. The revolution number is represented by n. The number of revolutions in a circular motion should follow
n = s / (2πR)
where n is total revolution, s is total distance and R is the radius of circular object.
From the question above, the given parameters are
n = 1
R = 0.33 m
By using the given equation, we can calculate the total distance traveled in one revolution
n = s / (2πR)
1 = s / (2 . π . 0.33)
s = 0.66π
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A large ball of gas that is held together by gravity and that has a core so hot that
nuclear fusion occurs is called a(n)
If the force to stretch a spring is given as k = (100N/m), then what is the potential energy of the spring if it is stretched 1 meters from rest?
Answer:
50 Joules
Explanation:
How to convert from nanometers to meters and vice versa? Convert 0.6×10^−6 nm to m.
To convert from nanometers (nm) to meters (m), divide the number of nanometers by 10^9. To convert from meters to nanometers, multiply the number of meters by 10^9.
What is nanometers?Nanometers (nm) is a unit of measurement that is used to measure very small distances. It is equal to one billionth of a meter, or one millionth of a millimeter. Nanometers are very small, measuring only a few atoms across. This makes them ideal for measuring nanoscale objects and structures, such as nanomaterials, nanostructures, and nanoelectronic devices. Nanometers can also be used to measure distances between molecules and atoms, or even the wavelength of light. Nanometer scale objects and processes can be used in fields such as nanotechnology, nanomedicine, and nanobiology. Nanometers are also important for measuring the structure of materials and the size of DNA molecules.
In this example, 0.6 x 10^-6 nm is equal to 0.6 x 10^-9 m.
0.6 x 10^-6 nm ÷ 1,000,000,000 = 0.6 x 10^-9 m.
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Match each word to it's correct meaning.
1. conduction
A.resistance to motion between two objects in contact
2. convection
B.something that will flow
3. fluid
C.measure of how much heat energy a substance has
4. friction
D.transmission of heat by the transferring of energy from one particle to another
5. temperature
E.transfer of heat by the motion of the particles of a gas or fluid
PLS PLS PLS NEED HELP ONLY HAVE A LITTLE BIT TILL I HAVE TO SHOW ME PARENTS ME GRADES AND I CANT HAVE ANYTHING OVERDUE
Answer:
you know the answer i answered it before on a question 0-0
Explanation:
c) The density of nitrogen gas at STP is 1.23 kgm ³. Calculate the root mean square speed of nitrogen molecules at STP. [2]
The root mean square speed of nitrogen molecules at STP is approximately 515.26 m/s.
To calculate the root mean square (RMS) speed of nitrogen molecules at STP (Standard Temperature and Pressure), we need to use the ideal gas law and the equation for calculating RMS speed.
First, we need to determine the molar mass of nitrogen (N₂), which is approximately 28.0134 g/mol.
Using the ideal gas law equation PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant (8.314 J/(mol·K)), and T is the temperature, we can rearrange the equation to solve for n/V.
n/V = P/RT
At STP, the pressure is 1 atm, the volume is 22.4 L (molar volume of a gas at STP), and the temperature is 273.15 K.
n/V = (1 atm) / (0.0821 atm·L/(mol·K) * 273.15 K) = 0.0409 mol/L
Now we convert the density of nitrogen from kg/m³ to g/L by multiplying by 1000:
Density = 1.23 kg/m³ * (1000 g/kg) = 1230 g/L
Next, we calculate the number of moles in 1 liter of nitrogen gas:
0.0409 mol/L * 1 L = 0.0409 mol
To find the number of molecules, we multiply the number of moles by Avogadro's number (6.0221 × 10²³ molecules/mol):
0.0409 mol * (6.0221 × 10²³ molecules/mol) = 2.463 × 10²² molecules
Now we can use the equation for calculating RMS speed:
RMS speed = √[(3RT) / (molar mass)]
RMS speed = √[(3 * 8.314 J/(mol·K) * 273.15 K) / (28.0134 g/mol)]
RMS speed ≈ 515.26 m/s
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Which set up correctly uses an electric current to produce a strong magnet a. a steel rod that carries electricity makes the rod become a strong magnet. b. the pieces of steel in a battery that stores electricity become a strong magnet. c. copper wires put next to pieces of steel make the steel become a strong magnet. d. a steel rod wrapped in a current-carrying wire turns the rod into a strong magnet.
d) When a steel rod wrapped in a current-carrying wire turns the rod into a strong magnet.
By wrapping the current-carrying wire like a solenoid, A steel bar placed in a solenoid coil becomes a permanent magnet. A solenoid is a coil of wire designed to create a strong magnetic field within the coil. If the same wire is wrapped many times around a cylinder, say a steel cylinder, the magnetic field from the wire can become very strong. The number of turns refers to the number of loops a magnet has. The more loops, the stronger the magnetic field. Thus, the steel rod will turn into a strong magnet by wrapping it with a current-carrying wire.
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he cars mass was only 111 kg. Suppose two of these cars are used in a stunt crash for an action film. If one car's initial velocity is 9.00 m/s to the right and the other car's velocity is 5.00 m/s to the left, how much kinetic energy is discinated in the crash
In the crash 5883 Joule kinetic energy is discinated when two of these cars are used in a stunt crash for an action film.
How do you use start kinetic energy to calculate end kinetic energy?Final kinetic energy (KE) is equal to 1/2 m1v'12 + 1/2 m2v'22 , or joules. The end kinetic energy for common things will be lower than the starting point. The only way you can increase kinetic energy is if the impact causes an energy release of some type.
How can total kinetic energy be calculated?As a result, the kinetic energy equation states that it is equal to 1/2 the object's mass times the magnitude of its velocity squared, or speed squared.
Initial kinetic energy KE,
\(KE=1/2 m_1v_1^2 + 1/2 m_2v_2^2\)
\(KE=1/2 (111)(9.00)^2 + 1/2 (111)(5.00)^2\)
\(KE= 4495.5+1387.5\)
\(KE= 5883J\)
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which term describes the hydroplaning which occurs when an airplane's tire is effectively held off a smooth runway surface by steam generated by friction?
The term that describes the hydroplaning which occurs when an airplane's tire is effectively held off a smooth runway surface by steam generated by friction is "dynamic hydroplaning".
Dynamic hydroplaning occurs when a layer of water builds up between the tire and the runway surface, causing the tire to lose contact with the runway and ride on a cushion of water.
This can happen when the speed of the airplane exceeds the ability of the tires to displace the water on the runway, and can lead to a loss of control or even a runway excursion.
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based on your answer,what idea comes in to your mind?
Answer:
Homework · Free food · Loosing and robbing pencil · Forgetting book at home · Waiting for a Play time · My first bit · Lunch sharing · Assembly lines- standing in last just ...
Explanation:
A 8.10-kg block is at rest on a horizontal floor. if you push horizontally on the 8.10-kg block with a force of 12.0 n, it just starts to move. what is the coefficient of static friction?
It just starts to move. The coefficient of static friction between the block and the floor is approximately 0.151.
N = (8.10 kg) (9.81 m/s^2) = 79.4 N
Now we can substitute these values into the formula for static friction:
f_s = μ_s N
12.0 N = μ_s (79.4 N)
Solving for μ_s, we get:
μ_s = 12.0 N / 79.4 N
μ_s = 0.151
Static friction is a force that arises between two surfaces that are in contact with each other but not in motion relative to each other. When an external force is applied to an object that is at rest, static friction opposes the force and prevents the object from moving.
This type of friction is the reason why you need to push a heavy object harder and harder until it starts moving. Once the object starts moving, the force required to keep it moving is reduced, and dynamic or kinetic friction takes over. The magnitude of the static friction force depends on the nature of the surfaces in contact, the normal force pressing the surfaces together, and the coefficient of static friction.
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what differentiates light energy we can perceive visually from light energy we cannot perceive visually?
The main difference between light energy we can perceive visually and light energy we cannot perceive visually lies in the range of the electromagnetic spectrum.
Visible light energy falls within a specific range of the electromagnetic spectrum, ranging from approximately 400 to 700 nanometers in wavelength. This range corresponds to the colors we can perceive with our eyes. Light energy outside of this range, either with shorter wavelengths (such as ultraviolet) or longer wavelengths (such as infrared), cannot be detected by the human eye.
The differentiation between light energy we can perceive visually and light energy we cannot perceive visually is based on the specific range of wavelengths within the electromagnetic spectrum. Visible light, with wavelengths between 400 and 700 nanometers, is the portion of light energy that our eyes are sensitive to, allowing us to perceive it as colors. Light energy outside of this range, whether it's shorter or longer wavelengths, is invisible to us without the aid of specialized instruments or technologies.
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1. compare the discharge of the rio grande at albuquerque and at otowi bridge (located upstream, near santa fe)
The Rio Grande is one of the largest river systems in the United States, running over 3,000 kilometers from the mountains of Colorado to the Gulf of Mexico. The river flows from north to south and passes through several states, including Colorado, New Mexico, and Texas.
A comparison of the discharge of the Rio Grande at Albuquerque and at Otowi Bridge (located upstream, near Santa Fe) is as follows: Albuquerque: It is the largest city in New Mexico, situated in the central part of the state. The Rio Grande flows through the city, where it is dammed to form a large lake known as Elephant Butte Reservoir. The discharge of the Rio Grande at Albuquerque is around 100 cubic feet per second (cfs) during normal conditions.
This means that the river has twice the volume of water at Otowi Bridge than at Albuquerque.During times of drought, the river's discharge can drop to dangerously low levels, affecting wildlife and human communities that rely on the river for water. The river's discharge can also increase during periods of heavy rainfall or snowmelt, leading to flooding in downstream communities.
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A boat has a mass of 54,000 kg. The boat is accelerating at 0.4 m/s2. What is the net force acting on the boat?'
Answer:
21.6 kN
Explanation:
F = m * a
F = 54 000 * .4 = 21600 N
Answer:54,000 N
Explanation:
a force that pushes a small mass will have _ effect on the acceleration than that same force pushing on na large mass
A. greater
B. smaller
C. same
Answer:
a
Explanation:an example An astronaut in space has the same mass as he does on earth while having different ... Newton's Second Law of Motion: Force = mass x acceleration ... Push less to move it (use less force.) ... Gravity has an effect on an object in the vertical direction only.
Answer:
it is a greater
Explanation:
hope it helps
Baby Yoda weighs 53. 85N on Mercury; the gravitational force strength on Mercury is 3. 59 m/s2
[6 marks]
What is his mass on Mercury?
What is his weight on Earth?
If Baby Yoda is riding in an elevator that is accelerating down at a rate of 1. 25 m/s2, determine his apparent weight. (it may help if you draw a FBD)
Baby Yoda's mass on Mercury is 5.98 kg. His weight on Earth is 11.18 kg. His apparent weight in the elevator is 47.38 N.
To find Baby Yoda's mass on Mercury, we can use the formula:
weight = mass x gravitational force strengthRearranging the formula to solve for mass, we get:
mass = weight / gravitational force strengthPlugging in the given values, we get:
mass = 53.85N / 3.59 m/s² = 5.98 kgTo find Baby Yoda's weight on Earth, we can use the formula:
weight = mass x gravitational force strengthwhere the gravitational force strength on Earth is 9.81 m/s².
Plugging in the mass of 5.98 kg, we get:
weight = 5.98 kg x 9.81 m/s² = 11.18 kgTo find Baby Yoda's apparent weight in the elevator, we need to draw a free body diagram (FBD) and use Newton's second law:
apparent weight - weight = mass x accelerationThe weight is the gravitational force strength on Mercury, which we already know to be 53.85N. The apparent weight is the force that Baby Yoda feels in the elevator. The mass is still 5.98 kg, and the acceleration is -1.25 m/s² (negative because the elevator is accelerating downwards).
Plugging in the values, we get:
apparent weight - 53.85N = 5.98 kg x (-1.25 m/s²)Simplifying, we get:
apparent weight = 47.38 NTherefore, Baby Yoda's apparent weight in the elevator is 47.38 N.
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Calculate the pressure on the bottom of a swimming pool 3. 5 m deep. How does the pressure compare with atmospheric pressure, 105 Pa? (density of water=1000kg/m3 ).
Answer:
1.343 atm
Explanation:
The mass of water above 1 square meter of swimming pool bottom is ...
M = (3.5 m)·(1000 kg/m^3) = 3500 kg/m^2
Then the force exerted by the water on the pool bottom is ...
F = Mg = (3500 kg/m^2)(9.8 m/s^2) = 34300 N/m^2 = 34300 Pa
Compared with atmospheric pressure, this is ...
34,300/10^5 = 0.343 . . . . atmospheres
Added to the atmospheric pressure on the water's surface, the total pressure on the pool bottom is 1.343 atmospheres.