[Physics for University Beginners Vol 2] [Electrostatics] 11.15. between the two points is 400 V, what is the speed of the proton when it passes through point Y? The A proton moves in an electric field from point X to point Y. If the potential difference 1.6 x 10-19 C, mass of proton speed of the proton at point X is 4.5 x 105 m/s. (Charge on a proton = 1.67 x 10-27 kg) =
Answers
The speed of the electron can be obtained from the question as 1.2 * 10^7 m/s.
What is the speed?The orbitals or energy levels that electrons occupy around the nucleus in the world of atoms and molecules are specific. The movement of electrons in these energy levels is referred to as an electron orbital or electron cloud. Since there is no unique trajectory for an electron's speed throughout its orbit, only a probability distribution may accurately explain this speed.
We know that;
eV = 1/2mv^2
Then we have that;
400 * 1.6 x 10-19 = 1/2 * 9.1 * 10^-31 * v^2
v = √2 * 400 * 1.6 x 10-19 /9.1 * 10^-31
v = 1.2 * 10^7 m/s
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Related Questions
What is the difference between an object with a constant accleration and a constant velocity?
a. There is no difference between constant velocity and constant acceleration.
b. If an object has a constant velocity it will not have an acceleration- the velocity does not change. A constant acceleration means an objects velocity will increase or decrease by the same amount in each interval of time.
c. If an object has a constant acceleration it will not have a velocity. A constant velocitty means an object will increase or decrease displacement by the same amount in each interval of time
d. If an object has a constant acceleration on a velocity vs time graph the slope of the line will = zero.
Answers
To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.
can u figure it out from there but if anything i think it is C
To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.
can u figure it out from there but if anything i think it is C
MULTIPLE CHOICE QUESTION
Principal axis or optical axis is a virtual line that passes through
the center of the lens
the lower part of the lens
Answers
Principal axis or optical axis is a virtual line that passes through
the center of the lens.
What is lens?A lens is a transmissive optical tool that employs refraction to focus or disperse a light beam. A compound lens is made up of numerous simple lenses that are often aligned along a common axis, as opposed to a simple lens, which is made up of a single transparent piece.
Principal axis the line between the optical center and the centers of curvature of a lens's or a curved mirror's faces. Any one of three axis that are mutually perpendicular and around which a body has its greatest moment of inertia.
Principal axis or optical axis is a virtual line that passes through
the center of the lens.
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3. A force of 70N is applied to a 10kg box with a friction force of 30N opposing it's motion. The box starts
from rest and reaches a speed of 5m/s. Determine the distance over which the force acts on the box.
Answers
The distance over which the force acts on the box, given that 70 N is applied to the 10 Kg box is 3.125 m
How do I determine the distance ?We'll begin by obtaining the acceleration of the box. Details below:
Force applied = 70 NForce of friction = 30 NNet force = Force applied - Force of friction = 70 - 30 = 40 N Mass of box = 10 KgAcceleration (a) =?Net force = mass × acceleration
40 = 10 × acceleration
Divide both sides by 10
Acceleration = 40 / 10
Acceleration = 4 m/s²
Finally, we shall determine the distance. Details below
Initial velocity (u) = 0 m/sFinal velocity (v) = 5 m/s Acceleration(a) = 4 m/s²Distance (s) =?v² = u² + 2as
5² = 0² + (2 × 4 × s)
25 = 0 + 8s
25 = 8s
Divide both side by 8
s = 25 / 8
s = 3.125 m
Thus, we can conclude that the distance covered is 3.125 m
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the three loops of wire shown in the figure are all subject to the same uniform magnetic field that does not vary with time. loop 1 oscillates back and forth as the bob in a pendulum, loop 2 rotates about a vertical axis, and loop 3 oscillates up and down at the end of a spring. which loop, or loops, will have an emf induced in them?
Answers
Loop 2 will have an induced EMF.
We can arrive at this answer because:
EMF is induced in loops that can be rotated, as the magnetic flux only changes the magnetic field through one rotation.In the figure below, we can see that Loop 1 is not being rotated, but swung from left to right.Loop 3 is also not being rotated, but pushed up and down.Loop 2 is being rotated, so it is in this loop that we can see an induced EMF.The figure below was taken from questions like yours and the movement of each loop can be seen by the arrows.
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explain why balancing the forces acting on a body is not enough to establish equilibrium.
Answers
Balancing the forces acting on a body is not enough to establish equilibrium because equilibrium also requires the balancing of torques or moments acting on the body.
In physics, equilibrium refers to a state in which an object or system experiences no net force and no net torque. For an object to be in equilibrium, both the forces and the torques acting on it must be balanced.
Balancing the forces means that the vector sum of all the forces acting on the body is equal to zero. This ensures that there is no net force acting on the object, and it will not accelerate in any direction. However, even if the forces are balanced, the object can still rotate or have a tendency to rotate if the torques acting on it are not balanced.
A torque, also known as a moment, is a measure of the tendency of a force to rotate an object about a specific axis. It depends on the magnitude of the force, the distance from the axis of rotation, and the angle between the force and the lever arm. When torques are balanced, the sum of all the torques acting on the object is equal to zero.
To establish equilibrium, both the forces and the torques acting on the body must be balanced. This means that not only should the vector sum of the forces be zero, but also the algebraic sum of the torques should be zero. When both conditions are met, the object will remain at rest or continue to move with a constant rotational motion.
Balancing the forces acting on a body is not enough to establish equilibrium because equilibrium requires the balancing of both forces and torques. Simply balancing the forces ensures that there is no net force acting on the object, but it does not guarantee that the object will be in a state of complete equilibrium. To achieve equilibrium, the torques acting on the object must also be balanced, ensuring that there is no tendency for rotation.
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The force that causes electrons to flow through a conductor is known as:
Answers
Answer:
Voltage
Explanation:
How can you identify the north/south pole in a magnet. Is there a north/south pole in a magnetic field and if so how do we identify that
Answers
Steps :-
Tie a little rope with the magnet centre.Put the magnet holding up in air straight.Put a clock magnet beside the holding of the magnet.The north pole of clock pin will show the north pole of the magnet and other will show south pole .
A car is traveling at a constant velocity of 60 km/h east for 4 hours.
Choose the correct statement about the acceleration of the car.
A
The acceleration of this car IS positive.
B
The acceleration of this car is negative.
C
The acceleration of this car is zero.
D
m
The acceleration of this car is 15 Co
Answers
The acceleration of this car is zero. Because Acceleration is the change of velocity with respect to time and since car maintains a constant velocity, there is no acceleration.
What is acceleration ?The rate at which a velocity changes over time in both direction and speed. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.
What is the relationship between acceleration and speed?Acceleration is the rate at which speed changes, while speed is the ratio of the distance in a time period. The metric process utilizes meters per second (m/s) as the unit of speed and meters per second squared (m/s²) as the measure of acceleration. Velocity is a scalar quantity, whereas speed is indeed a scalar quantity.
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A
b A wind blows steadily at 90° to a yacht sail of area 3.8 m². The velocity of the
wind is 20 ms-1.
i Show that the mass of air hitting the sail each second is approximately
90 kg. Density of air is 1.2 kg m-³.
Answers
Answer: 90Kg
Explanation:
The mass of air hitting the sail each second can be calculated as:
mass of air = density of air * volume of air
The volume of air hitting the sail can be calculated as:
volume of air = area of sail * velocity of wind * time
Here, the area of sail is given as 3.8 m², the velocity of wind is 20 ms^-1, and the time is 1 second (since we want to calculate the mass of air hitting the sail each second).
Therefore,
volume of air = 3.8 m² * 20 ms^-1 * 1 s = 76 m³
Using the given density of air of 1.2 kg m^-3, we can calculate the mass of air hitting the sail each second as:
mass of air = 1.2 kg m^-3 * 76 m³ = 91.2 kg
Therefore, the mass of air hitting the sail each second is approximately 90 kg.
A 10 kg block sits on a level surface, and a horizontal force of 50 N is applied to the block. If the coefficient of static friction between the block and the surface is 0.75, does the block move? If not, how great a force would be required to move the block?
Answers
The block will not move.
The amount of force that would be required to move the block is 73.5 N
What is force?Force can be defined as the product of mass and acceleration.
The S.I unit of force is Newton (N)
For the block to move, The horizontal force applied to the block but be greater than the static friction of the floor on the block.
F > F'F = Force applied to the block = 50 N.F' = mgμ................. Equation 1Where:
F = Frictional force,m = mass of the blockg = acceleration due to gravity of the blockμ = coefficient of static friction of the block.From the question,
Given:
m = 10 kgg = 9.8 m/s²μ = 0.75Substitute these values into equation 1
F' = (10×9.8×0.75) = 73.5 N.Comparing F and F', It can be seen that
F < F'
There, The block will not move.
The amount of force that would be required to move the block is 73.5 N
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There are two categories of ultraviolet light. Ultraviolet A (UVA) has a wavelength ranging from 320 nm to 400 nm. It is necessary for the production of vitamin D. UVB, with a wavelength in vacuum between 280 nm and 320 nm, is more dangerous because it is much more likely to cause skin cancer.
A) Find the frequency range of UVA. Enter the minimum and maximum values of the range.Enter your answers numerically separated by a comma.
Answers
The frequency range of UVA is approximately 7.5 x 1\(0^{14}\) Hz to 9.4 x 1\(0^{14}\) Hz.
To find the frequency range of UVA, we can use the formula:
Frequency = Speed of light / Wavelength
The speed of light is approximately 3.00 x 1\(0^8}\) meters per second.
Minimum frequency of UVA:
Frequency = (3.00 x 1\(0^8}\) m/s) / (400 x 1\(0^{-9}\) m) ≈ 7.5 x 1\(0^{14}\) Hz
Maximum frequency of UVA:
Frequency = (3.00 x 1\(0^8}\) m/s) / (320 x 1\(0^{-9}\) m) ≈ 9.4 x 1\(0^{14}\) Hz
Therefore, the frequency range of UVA is approximately 7.5 x 1\(0^{14}\) Hz to 9.4 x 1\(0^{14}\) Hz.
Expressing it numerically separated by a comma, the range is 7.5 x 1\(0^{14}\) Hz, 9.4 x 1\(0^{14}\) Hz.
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In this investigation students are required to build a voltaic cell. Choose the answer that states the experimental steps in the correct order?
a. Place 4 pieces of yarn (2-3 inch) in a 50 ml beaker and soak in 1M NaNO3(aq)
b. Place two metals in the wells with the corresponding metal ion solutions
c. Add 5 -8 drops of the corresponding metal ion solutions in to the wells of a plastic well plate
d. Polish the given metals using steel wool/ sand paper
e. Place a piece of soaked yarn , each end in the wells with metal ions solutions
f. Connect the lab quest to the red and black clips and then attach the clips to the metals to obtain a voltage readingGroup of answer choices
1. a, b, c , d, e, f
2. a, c, e, b, d, f
3. a, e, c, f, b, d
4. a, d, c, b, e, f
5. a, b, d, c, f, e
Answers
This investigation students are required to build a voltaic cell. Hence, the correct option is 5. a, b, d, c, f, e.
The correct order of experimental steps to build a voltaic cell is:
a. Place 4 pieces of yarn (2-3 inch) in a 50 ml beaker and soak in 1M NaNO₃(aq)
d. Polish the given metals using steel wool/ sand paper
c. Add 5-8 drops of the corresponding metal ion solutions into the wells of a plastic well plate
e. Place a piece of soaked yarn, each end in the wells with metal ion solutions
b. Place two metals in the wells with the corresponding metal ion solutions
f. Connect the lab quest to the red and black clips and then attach the clips to the metals to obtain a voltage reading
Therefore, the answer is 5. a, b, d, c, f, e.
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is there friction when an object stands still?
Answers
Answer:
No
Explanation:
The gravitational force always acts opposite the direction of motion. Air resistance only acts on objects that are moving. The force of friction does not exist when an object is stationary. All objects experience a normal force.
btw pls mark as branliest! Thanks!
Jupiter is 11 times more massive than Earth. How would adding a “JUPITER MODE” to the virtual activity change the results of Galileo’s experiment?
Answers
A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in a lake having water of density 1000 kg/m3?
Answers
The box can hold a maximum of 2505 kg of mass before it sinks in the lake.
To determine the maximum mass that can be loaded onto the box before it sinks, we need to calculate the buoyant force exerted by the water on the box, which is equal in magnitude to the weight of the water displaced by the box.
The volume of water displaced by the box is given by:
Volume = length x width x height = 5.0 m x 1.0 m x 0.50 m = \(2.5 m^3\)
The weight of water displaced by the box is given by:
Weight = density x volume x gravity = \(1000 kg/m^3 x 2.5 m^3 x 9.81 m/s^2 = 24,525 N\)
Therefore, the maximum mass that can be loaded onto the box before it sinks is:
Maximum mass = weight / gravity = \(24,525 N / 9.81 m/s^2 = 2505 kg\)
So, the box can hold a maximum of 2505 kg of mass before it sinks in the lake.
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What physical quantity describing motion does the driver neglect when he/she practices tailgating? [Choices: distance, displacement, speed, velocity or acceleration]
Answers
The physical quantity that is neglected when practicing tailgating is :
Distance TailgatingTailgating is the act of driving or following a vehicle very closely and this can be very dangerous as well, during this act the distance between the vehicles is been neglected by the driver.
Distance is the difference in position of an object with time in respect to another object. ( i.e It is a scalar quantity ).
Hence we can conclude that the physical quantity that is neglected when practicing tailgating is Distance.
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7. A 50 kg skater pushed by a friend accelerates 5 m/sec 2 . How much force did the friend apply?
Answers
The force applied on the the skater by his friend is 150 newtons.
What is the applied force?A force is simply referred to as either a push or pull of an object resulting from the object's interaction with another object.
Newton's Second Law, force is expressed as;
Force = mass × acceleration
Given that;
Mass of the skater m = 50kgAcceleration a = 5 m/sec²Applied force F = ?Plug the given values into the above formula and solve for force F.
Force = mass × acceleration
Force = 50kg × 5m/s²
Force = 250kgm/s²
Force = 250N
Therefore, the applied force is 250 newtons.
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Which list has possible positions for a superior planet? Positions C and D Positions E and F Positions A and B Positions A, B, C, and D None of the above
Answers
Superior planets are those that have orbits outside of Earth's orbit around the Sun. The correct answer is 3. Positions A and B.
From Earth's perspective, superior planets can appear opposite the Sun in the sky, meaning they are on the opposite side of the Sun from Earth. This is known as opposition.
Positions A and B in the given options represent possible opposition positions for a superior planet. When a planet is at position A, it is in opposition to the Sun, and when it is at position B, it is also in opposition. Positions C, D, E, and F are not relevant in this context and do not represent opposition positions. Therefore, the correct answer is option 3: Positions A and B.
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--The complete Question is, Which list has possible positions for a superior planet?
1. Positions C and D
2. Positions E and F
3. Positions A and B
4. Positions A, B, C, and D
5. None of the above --
Which is NOT something that all green plants have in common?
1.They make their own food.
2. They reproduce.
3 .They grow.
4 .They produce flowers.
Answers
Answer:
4
Explanation:
Not all plants can grow flowers. Only the ones thay have buds can.
Not all plants produce flowers. Hence, this is the characteristic which is not common in all plants.Therefore, the correct option is 4.
What are flowers?Flowers are the structures of plants. They are responsible for producing seeds that will grow into new plants. Flowers typically consist of a colorful or ornamental part called the corolla, which attracts pollinators such as bees and butterflies, and a reproductive part called the stamen and pistil, which contain the plant's male and female organs.
Not all green plants produce flowers. Flowering plants are a type of plant that belong to the group Angiosperms, but there are also non-flowering plants like ferns and mosses that do not produce flowers. Therefore, the correct option is 4.
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Hell it’s due soon??
Answers
Explanation:
don't know don't know don't know
No matter how well we get along with our parents as adolescents, there comes a time when we need to break away and assert our own independence. There are several ways in which we do this, some of them deliberate and intentional and some of them not so intentional. Describe several ways you use or have used to break away from your parents. Briefly describe your parents' reactions.
Answers
Answer: I never said anything to them but if i did it would be "I need a break from you, i love you but sometimes I have to find the path on my own." i would say this if i wasn't scared to hurt them.
Explanation:
What is the objects average velocity?
Answers
Answer:
answer should be 10 because the line goes from (0,0) then to (1,10) and so on
8. A 55-kg skateboarder enters a ramp moving horizontally with a speed of 6.5 m/s, and leaves the ramp moving vertically with a speed of 4.1 m/s. (A) Find the height of the ramp, assuming no energy loss to frictional forces.
Answers
Answer:
The maximum height above the bottom of the ramp is 1.3 m.
Explanation:
Energy loss to friction
The energy lost to friction by the skateboarder is calculated from the change in kinetic energy of the skateboarder.
ΔK.E = K.Ef - K.Ei
ΔK.E = ¹/₂m(vi² - vf²)
ΔK.E = 0.5 x 55 (4.1² - 6.5²)
ΔK.E = -699.6 J
Maximum height above the bottom of the ramp
The maximum height above the bottom of the ramp is determined from conservation of energy.
mghi + ¹/₂mvi² = ¹/₂mvf² + mghf
55 x 9.8 x hi + (0.5 x 55 x 6.5²) = (0.5 x 55 x 4.1²) + (55 x 9.8 x 0)
539hi + 1161.88 = 462.28
539hi = -699.6
hi = -699.6/539
hi = -1.3 m
Thus, the maximum height above the bottom of the ramp is 1.3 m.
What is a half-life?
Answers
Answer:
When yo die early
Explanation:
Answer: A I think but I'm sure that Half Life is a video game by Valve.
Explanation:
In the simple AC circuit shown on the right, C = 0.075 F, L = 0.085 H.c=0.075FL=0.085HA.) Express the resonance angular frequency, ω0, in terms of L and C.B.)Calculate the value of ω0, in radians per second.
Answers
The resonance angular frequency (ω0) in a simple AC circuit can be expressed in terms of the inductance (L) and capacitance (C) as ω0 = 1 / √(LC). To calculate the value of ω0 in radians per second, we need to substitute the given values of L and C into the equation.
In a simple AC circuit consisting of an inductor (L) and a capacitor (C), the resonance angular frequency (ω0) is the frequency at which the circuit exhibits maximum response or resonance. It can be calculated using the formula ω0 = 1 / √(LC), where L is the inductance and C is the capacitance.
To calculate the value of ω0, we substitute the given values of L = 0.085 H and C = 0.075 F into the equation. Plugging these values into the formula, we get ω0 = 1 / √(0.085 * 0.075).
Simplifying the expression, we find ω0 = 1 / √(0.006375) = 1 / 0.0799 ≈ 12.518 radians per second.
Therefore, the value of ω0, in radians per second, for the given circuit is approximately 12.518.
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On a fine spring day you notice that the temperature is 68°F. What is the corresponding temperature on the Celsius scale? (step by step pls!)
Answers
Answer:
20°C
Explanation:
The relationship between temperature in degrees Fahrenheit(F) and degrees Centigrade (C) is
C = (F - 32) x 5/9
Given F = 68°F
C = (68-32) x 5/9
= 36 x 5/9
= 36/9 x 5
= 4 x 5
= 20°C
Answer:
20º C
Explanation:
The formula for converting Fahrenheit to Celsius is:
C = 5/9 • (F - 32)
Plugging 68º for F we get:
C = 5/9 •(68º-32)
C = 5/9 •(36)
C = 20º
Which system is used for transporting molecules to the cells?
Answers
Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion
Explanation:
A block is initially sliding along a surface of negligible friction with a speed v0 A constant force F0 is then exerted on the block. Which of the following figures represents the situations in which the kinetic energy of the block will initially decrease? Select two answers.
Answers
The frictional force reduces the block's kinetic energy and causes negative work to be done on it.
Simply put, what is kinetic energy?Kinetic energy is the energy that a thing has when it is moving. An item can only be accelerated through the application of a force. Applying force requires effort on our part. Following completion of the work, energy is transferred towards the object, which then moves at such a new, constant speed.
What kinds of things contain kinetic energy?
Kinetic energy appears to be the driving force behind motion, as evidenced by the way objects and subatomic particles move. Every particle & moving object contains kinetic energy. Examples of kinetic energy in motion include walking, a baseball flying through the air, food falling off a table, and just a charged particle within an electric field.
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The word universal has the word root uni- which means "one". Which of these best explains how this word root
is related to the meaning of universal as it is used in "Newton's law of universal gravitation"?
O A The law is a single unit of a larger set of laws Newton discovered.
O B The law applies to the one thing out of two with the larger mass.
O C The law applies everywhere and to all forms of matter, that is, all in one.
O D The number one was the original universal constant used in Newton's calculations.
Answers
The best explanation for how the word root "uni-" is related to the meaning of "universal" in "Newton's law of universal gravitation" is option C: "The law applies everywhere and to all forms of matter, that is, all in one."
The term "universal" in Newton's law of universal gravitation refers to the idea that the law applies universally, meaning it is valid and applicable everywhere in the universe. The law states that every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
This gravitational force is applicable to all forms of matter, regardless of their composition or characteristics.
The word root "uni-" means "one," and in this context, it signifies that the law applies uniformly and inclusively to all objects and matter in the universe, treating them as one system.
It emphasizes the idea that the law is not limited to specific objects or regions but encompasses everything. Newton's law of universal gravitation provides a unifying principle that describes the gravitational interactions between all objects in the universe, making it a fundamental concept in understanding the behavior of celestial bodies and the forces that govern them.
So, option C is correct.
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a certain type o f elementary particle travels at a speed of 2.60x10^8 m/s at this speed the average lifetime is measured to be 4.76x10^-6s. what is the particle's lifetime at rest?
Answers
The particle's lifetime distance at rest is 1.2376 m.
Here, the particle's lifetime refers to the the distance in speed formula
Speed is the measure of average distance in a given time. It is the vector quantity.
The distance can be calculated by the product of speed and the time given.
Here, in this question, the total distance a certain elementary particle has traveled in its lifetime.
This can be determined by merely multiplying the speed with the lifetime of years.
Given,
Speed = 2.6×10⁸ m/s
Time = 4.76×10⁻⁶ s
Speed = distance / time
Distance = speed * time
Total distance = (2.6×10⁸ m/s)*(4.76×10⁻⁶ s)
Total distance = 1.2376 meters
Therefore, the distance travelled by the particle with the speed of 2.6×10⁸ m/s in the lifetime is 1.2376 m
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