The force on an electron placed 10-9 m away from a nucleus with a charge of +40e can be calculated using Coulomb's law, considering the charge of the electron and the proton, the distance between them, and Coulomb's constant.
Explanation:The question pertains to the force experienced by an electron in the vicinity of an atomic nucleus with a charge of +40e. To calculate this force, we will use Coulomb's law, which states that the electric force (F) between two point charges is directly proportional to the product of the charges (q1 and q2) and inversely proportional to the square of the distance (r) between them. The formula is given by F = k * |q1 * q2| / r², where k is Coulomb's constant (8.9875 × 10⁹ N⋅m²/C²).
Given that the charge of a proton (and thus the atomic number Z) is +e and the charge of an electron is -e, the force will be attractive, and we can ignore the signs for magnitude calculation. The charge of a proton is e = 1.602 × 10⁻¹⁹ C. For a +40e charge, the total charge is 40 × e. Plug these values, along with the given distance of 10 × 10⁻¹ m into Coulomb's law to compute the force on the electron.
Therefore, the magnitude of the force on the electron by a nucleus with a charge of +40e located 10⁻¹ m away can be calculated using the steps above.
A large jet flying overhead is low enough so that a man on the ground can hear its engines. The man sees the jet before he hears the engines because
Two identical charges are separated by a distance d. If the distance between them is increased to 3d, what will happen to the force of repulsion between them? A) It will be one-ninth the original force. B) It will be one-third the original force. C) It will be nine times the original force. D) It will be three times the original force.
Answer:
A
Explanation:
If the distance between them is increased to 3d then the force of repulsion between them is, It will be one-ninth the original force
What is electric force ?The force of repulsion between two identical charges is given by Coulomb's law, which states that the force between two charges is proportional to the product of the charges and inversely proportional to the square of the distance between them. Mathematically, it can be expressed as:
F = k x (q₁ x q₂) / d²
where F is the force of repulsion, q₁ and q₂ are the magnitudes of the charges, d is the distance between the charges, and k is the Coulomb constant.
When the distance between the charges is increased to 3d,
the force of repulsion will decrease,
since the denominator in the above equation will increase.
Specifically, the force will become one-ninth the original force, since the square of 3 is 9.
So the answer to the question is (A) It will be one-ninth the original force.
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I need help with this asap please
A water wave vibrates up and down four times each second, the distance between two successive crests is 5 meters, and the height from the lowest part to the highest part of the wave is 2 meters.
a. What is the frequency of the wave in hertz?
b. What is the period of the wave in seconds?
c. What is the speed of the wave in meters per seconds?
d. What is the amplitude of the wave in meters?
The frequency of the wave is 4 Hz, the period is 1/4 seconds, the speed is 20 m/s, and the amplitude is 2 meters.
Explanation:a. The frequency of the wave can be calculated by counting the number of complete vibrations in one second. In this case, the wave vibrates up and down four times each second, so the frequency is 4 Hz.
b. The period of the wave is the time it takes for one complete vibration. It can be calculated by taking the reciprocal of the frequency. In this case, the period is 1/4 seconds.
c. The speed of the wave can be determined by multiplying the frequency by the wavelength. Since the distance between two successive crests is 5 meters, the speed of the wave is 20 m/s.
d. The amplitude of the wave is the height from the lowest part to the highest part of the wave. In this case, the amplitude is 2 meters.
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You make a u turn in your car, what provides the centripetal force on the car and on you
The correct answer is the frictional force.
In fact, the centripetal force is the force that keeps the car in circular motion, and it points toward the centre of the circular trajectory. The frictional force between the tyres of the car and the road provides the centripetal force that keeps the car in the turn: in fact, without the friction (e.g. on an icy road), the car would not be able to make the turn at the same speed.
A particle initially located at the origin has an acceleration of vector a = 2.00ĵ m/s2 and an initial velocity of vector v i = 9.00î m/s.(a) find the vector position of the particle at any time t (where t is measured in seconds).
To find the vector position of the particle at any time t, use the kinematic equation r(t) = r0 + vit + 0.5at2. Plug in the values for the initial velocity and acceleration to get the position function.
Explanation:Given that at time t, the particle has an acceleration of vector a = 2.00ĵ m/s2 and an initial velocity of vector vi = 9.00î m/s, we can find the vector position of the particle at any time t using the kinematic equations.
The position function is given by:
r(t) = r0 + vit + 0.5at2
Plugging in the values, we have:
r(t) = 0 + (9.00î m/s)(t) + 0.5(2.00ĵ m/s2)(t2)
So, the vector position of the particle at any time t is r(t) = 9.00tî + t2ĵ - t2 km.
What has MOST LIKELY caused a change in the soil in the wheat field shown?
Erosion removes rocks and soil by wind, water, ice, and gravity.
Two large parallel conducting plates are 17 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. an electrostatic force of 2.9 ✕ 10-15 n acts on an electron placed anywhere between the two plate (neglect fringing). (a) find the electric field at the position of the electron.
In 1665 Sir Isaac Newton proposed the fundamental law of gravitation as a universal force of attraction between any two bodies. What does this theory state about the force that makes an apple fall and the force that keeps the moon in its orbit?
Newton's universal law of gravitation states that the force that makes an apple fall and the force that keeps the moon in its orbit are both caused by gravity. The force of gravity is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Explanation:Newton's universal law of gravitation states that every object in the universe attracts every other object 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 means that the force that makes an apple fall and the force that keeps the moon in its orbit are both caused by gravity. In both cases, the force of gravity is acting between two bodies and is dependent on their masses and the distance between them.
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An ideal monatomic gas at 300 k expands adiabatically and reversibly to twice its volume. what is its final temperature?
A uniform rod XY of weight 10.0N is freely hinged to a wall at X. It is held horizontal by a force F acting from Y at an angle 30° to the horizontal, as shown.
What is the value of F?
A- 5.0 N B- 8.7cm C- 10.0cm D-20.0cm
A ferris wheel of radius r speeds up with angular acceleration α starting from rest. part a find an expression for the velocity of a rider after the ferris wheel has rotated through angle δθ.
The expression for the velocity of a rider on the Ferris wheel after it has rotated through an angle [tex]\( \delta \theta \)[/tex] is given by:
[tex]\[ v = r \sqrt{2 \alpha \delta \theta} \][/tex]
To find the expression for the velocity of a rider after the Ferris wheel has rotated through an angle [tex]\( \delta \theta \)[/tex], we can use kinematic equations for rotational motion.
The kinematic equation relating angular displacement [tex](\( \delta \theta \))[/tex], initial angular velocity [tex](\( \omega_0 \))[/tex], angular acceleration [tex](\( \alpha \))[/tex], and time [tex](\( t \))[/tex] is:
[tex]\[ \delta \theta = \omega_0 t + \frac{1}{2} \alpha t^2 \][/tex]
Since the Ferris wheel starts from rest, [tex]\( \omega_0 = 0 \)[/tex], so the equation simplifies to:
[tex]\[ \delta \theta = \frac{1}{2} \alpha t^2 \][/tex]
We're interested in finding the angular velocity [tex](\( \omega \))[/tex] after the Ferris wheel has rotated through an angle [tex]\( \delta \theta \)[/tex]. To find [tex]\( \omega \)[/tex], we can use the kinematic equation relating angular displacement, initial angular velocity, angular acceleration, and final angular velocity:
[tex]\[ \omega^2 = \omega_0^2 + 2 \alpha \delta \theta \][/tex]
Since [tex]\( \omega_0 = 0 \)[/tex], this equation simplifies to:
[tex]\[ \omega^2 = 2 \alpha \delta \theta \][/tex]
Taking the square root of both sides:
[tex]\[ \omega = \sqrt{2 \alpha \delta \theta} \][/tex]
This gives us the angular velocity of the Ferris wheel after it has rotated through an angle [tex]\( \delta \theta \)[/tex].
However, to find the velocity of a rider at a particular point on the Ferris wheel, we need to convert this angular velocity to linear velocity. The linear velocity [tex](\( v \))[/tex] is related to the angular velocity [tex](\( \omega \))[/tex] by the equation:
[tex]\[ v = r \omega \][/tex]
Where:
- v is the linear velocity.
- r is the radius of the Ferris wheel.
So, substituting the expression for [tex]\( \omega \)[/tex] into this equation:
[tex]\[ v = r \sqrt{2 \alpha \delta \theta} \][/tex]
This is the expression for the velocity of a rider after the Ferris wheel has rotated through an angle [tex]\( \delta \theta \)[/tex].
In Robin’s linguistics class, the teacher and students are discussing how the word “nice” once meant “foolish” and how “awful” used to mean “full of awe.” They are most likely discussing ______
A.
morphemes
B.
semantics
C.
phonemes
D.
syntax
The top of the pool table is 0.810 m from the floor. the placement of the tape is such that 0 m is aligned with the edge of the table (as shown). the winner of the competition wants to know if he has broken the world record for the break shot of 32 mph (about 14.3 m/s). if the winner\'s ball landed a distance 4.65 m from the table edge, calculate his break shot speed.
What is most likely to happen to light that hits an opaque object?
A. All of the light passes through the object.
B. None of the light passes through the object.
C. Most of the light disappears.
D. Some of the light passes through the object.
When the light hits an opaque object, none of the light will pass through the object. Hence, option B is correct.
What is light?Electromagnetic radiation that the human eye can detect as light. From radio waves with wavelengths measured in meters to gamma rays with wavelengths shorter than roughly 1 1011 meter, electromagnetic radiation occurs throughout a very broad range of wavelengths.
The wavelengths of light that are visible to humans fall into a very small range within that wide spectrum, ranging from about 700 nanometers for red light to roughly 400 nm for violet light.
Infrared and ultraviolet are two spectral bands that are close to the visible region and are repeatedly alluded to as light as well.
Anything that doesn't let any light through is opaque. Instances of opaque materials include concrete, wood, and metal.
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Maglev trains, like the one shown in the picture, use magnet fields to travel up to 600 miles per hour. Magnets on the bottom of the train and on the tops of the rails have similar magnetic poles. Based on properties of magnets, how do these magnets affect the train?
the 2 magnetic fields repel eachother
At 600.0 k the rate constant is 6.1× 10–8 s–1. what is the value of the rate constant at 785.0 k?
A proton beam in an accelerator carries a current of 130 μa. if the beam is incident on a target, how many protons strike the target in a period of 17.0 s?
Final answer:
Using the formula relating current, charge, and time, approximately 1.38 × 10^16 protons strike a target when 130 μA of current is directed at the target for 17.0 seconds.
Explanation:
To determine how many protons strike the target in 17.0 seconds with a current of 130 μA (microamperes), we must understand the relationship between electric current, charge, and the quantity of charged particles. Current (I) is defined as the amount of charge (Q) passing through a point in a circuit per unit of time (t), mathematically described by the equation I = Q/t. Given that each proton carries a charge of approximately 1.6 × 10-19 C (coulombs), we can find the total charge that strikes the target over 17.0 seconds and subsequently calculate the number of protons involved.
First, convert the current from microamperes to amperes: 130 μA = 130 × 10-6 A. Then, use I = Q/t to find the total charge Q: Q = I × t = (130 × 10-6 A) × 17.0 s = 2.21 × 10-3 C. Finally, calculate the number of protons by dividing the total charge by the charge of a single proton: Number of protons = Q / charge of one proton = (2.21 × 10-3 C) / (1.6 × 10-19 C/proton) ≈ 1.38 × 1016 protons.
Therefore, approximately 1.38 × 1016 protons strike the target in a period of 17.0 seconds.
ampere. What is the resistance of the radio A radio operating at 3.0 volts and a constant temperature draws a current of 1.8 x 10 -4 circuit?
The resistance of the radio circuit is 16.7 kΩ.
To calculate the resistance of the radio circuit when it operates at 3.0 volts and draws a current of 1.8 x 10-4 amperes, we can use Ohm's Law, which states that Resistance (R) equals Voltage (V) divided by Current (I), or R = V/I. Plugging in the given values, R = 3.0 V / (1.8 x 10-4 A), we find that the resistance is approximately 16,666.67 Ω, or 16.7 kΩ when rounded to three significant digits. When dealing with electrical circuits, it is important to understand concepts like resistance, voltage, and current, as they are fundamental to analyzing and predicting the behavior of the circuit.
A ball is tossed from an upper-story window of a building. the ball is given an initial velocity of 7.90 m/s at an angle of 18.0° below the horizontal. it strikes the ground 4.00 s later. (a) how far horizontally from the base of the building does the ball strike the ground? 30.04 correct: your answer is correct. m (b) find the height from which the ball was thrown. incorrect: your answer is incorrect. work only with the vertical components of these quantities. this part of the problem is then a 1-dimensional free-fall example. m (c) how long does it take the ball to reach a point 10.0 m below the level of launching? s
The absolute pressure below the surface of a freshwater lake is 3.51 x 10^5 Pa. At what depth does this pressure occur? Assume that atmospheric pressure is 1.01 x 10^5 Pa. and the density of the water is 1.00 x 10^3 kg/m^3
The depth at which the pressure below the surface of a freshwater lake is 3.51 x 10^5 Pa is 24.29 meters.
Explanation:The depth at which the pressure below the surface of a freshwater lake is 3.51 x 10^5 Pa can be calculated using the formula:
Pressure = atmospheric pressure + density of water * gravitational acceleration * depth
In this case, the atmospheric pressure is 1.01 x 10^5 Pa, the density of water is 1.00 x 10^3 kg/m^3, and the gravitational acceleration is 9.8 m/s^2. We can rearrange the equation to solve for depth:
Depth = (pressure - atmospheric pressure) / (density of water * gravitational acceleration)
Plugging in the values, we get:
Depth = (3.51 x 10^5 Pa - 1.01 x 10^5 Pa) / (1.00 x 10^3 kg/m^3 * 9.8 m/s^2)
Depth = 24.29 meters
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Determine the tension developed in the cable ab required to support the traffic light, which has a mass of 19 kg . take h = 3.5 m.
Final answer:
The tension in the cable AB required to support the traffic light with a mass of 19 kg is equal to the weight of the traffic light, calculated as 186.2 N by multiplying the mass by the acceleration due to gravity.
Explanation:
To determine the tension in the cable AB required to support the traffic light with a mass of 19 kg, we need to use the concept that the tension must balance the weight of the traffic light. Since the traffic light is in equilibrium (not moving), the net force acting on it must be zero.
The weight of the traffic light (W) can be calculated using the formula W = m × g, where m is the mass of the traffic light and g is the acceleration due to gravity (which is approximately 9.8 m/s2 on the surface of the Earth).
Calculating the weight: W = 19 kg × 9.8 m/s2 = 186.2 N.
Now, since we are dealing with a situation where only one cable is mentioned and there are no angles provided, we assume the cable is vertical, and therefore, the tension in cable AB is simply the weight of the traffic light, which is 186.2 N.
Which theory proposes that the moon was a passing asteroid pulled into orbit by Earth's gravity? impact theory co-formation theory capture theory synchronous theory
Final answer:
The capture theory suggests the Moon was a passing asteroid that Earth's gravity pulled into orbit, but this theory is challenged by the Moon's orbit and compositional similarities to Earth. The widely accepted explanation is the giant impact hypothesis.
Explanation:
The theory that proposes the Moon was a passing asteroid pulled into orbit by Earth's gravity is known as the capture theory. However, there are significant challenges with this theory, including the need for a substantial loss of energy for a body to achieve orbit, which is difficult to explain for an object of the Moon's size. Moreover, the capture theory does not account for the nearly circular orbit of our Moon, nor does it explain the compositional similarities between the Earth and the Moon, particularly regarding isotopes of oxygen. The currently accepted explanation for the Moon's origin favoring these evidences is the giant impact hypothesis, which suggests the Moon formed from the debris of a collision between Earth and a Mars-sized body.
The use of air bags in cars reduces the force of impact by a factor of 110.(The resulting force is only as great.) What can be said about how the airbag changed the duration of the collision?
the answer is C. it increases by a factor of 110, i got 100 on the test
Which phrase best describes matter? A. Matter is made of atoms and is too small to see. B. Matter is solid and heavy. C. Matter has mass and takes up space. D. Matter has volume and takes up space.
Determine which heat transfers below are due to the process of conduction. I) You walk barefoot on the hot street and it burns your toes. II) When you get into a car with hot black leather in the middle of the summer and your skin starts to get burned. III) A flame heats the air inside a hot air balloon and the balloon rises. IV) A boy sits to the side of a campfire. He is 10 feet away, but still feels warm.
Answer:
I) You walk barefoot on the hot street and it burns your toes.
II) When you get into a car with hot black leather in the middle of the summer and your skin starts to get burned.
Explanation:
In conduction mode of heat transfer we know that the energy is transferred from one system to other system due to direct contact of two bodies
Here due to this direct contact the energy is transferred via a given solid or liquid medium
In this type of heat transfer medium particles will remain in its own position only the energy is transferred.
So here we can say the correct answer will be
I) You walk barefoot on the hot street and it burns your toes.
II) When you get into a car with hot black leather in the middle of the summer and your skin starts to get burned.
what are the inner planets relative distance from the Sun
There are two types of planets as classifieds by astronomers in our solar system.
The classification is based on the asteroid belt present in our solar system.
These are named as - [1] inner planets
[2]outer planets
The inner planets are the planets which are very close to the sun and present before the asteroid belt starting from sun.
The outer planets which are present after the asteroid belt are Jupiter,Uranus,Neptune and Pluto[if we consider Pluto as a planet]
There are four planets considered as inner planets. These are arranged from closest to the farthest as Mercury,Venus,Earth ad Mars.
The distance of Mercury from the sun is 57.91 million km
The distance of Venus from sun is 108.2 million km
The distance of Earth from sun is 149.6 million km
Finally the distance of Mars from the sun is 227.9 million km
How do the planets Venus and Neptune differ in terms of atmospheric composition?
(A)Venus has carbon dioxide in its atmosphere, while Neptune has methane in its atmosphere.
(B)Venus has oxygen in its atmosphere, while Neptune has carbon monoxide in its atmosphere.
(C)Venus has hydrogen chloride in its atmosphere, while Neptune has helium in its atmosphere.
(D)Venus has nitrogen in its atmosphere, while Neptune has oxygen and hydrogen in its atmosphere.
(E)Venus has sulfur dioxide in its atmosphere, while Neptune has nitrogen dioxide in its atmosphere.
Answer: The correct option is Option A.
Explanation:
Atmosphere is defined as the layer of gases which form an envelope around a planet.
Venus is the second and Neptune is the last planet of our solar system.
Venus's atmosphere mainly consists of carbon dioxide with trace amounts of nitrogen, argon , helium and neon.
Neptune's atmosphere mainly consists of helium and hydrogen with 2.5 to 3% of methane gas in it.
From the above information, the correct answer comes out to be Option A.
A monatomic ideal gas expands slowly to twice its original volume, doing 370 j of work in the process. part a find the heat added to the gas if the process is isothermal.
What must the charge (sign and magnitude) of a particle of mass 1.42 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 610 n/c ? use 9.81 m/s2 for the magnitude of the acceleration due to gravity. view available hint(s)?
In the process of nuclear fusion, large amounts of energy, at temperatures of approximately 120 million Kelvin, are required to join two nuclei into a single, heavier nucleus. Why does the process of fusion require so much energy in order to take place?