Cathode rays are deflected away from a negatively charged plate because.
Answers
Cathode rays are deflected away from a negatively charged plate because negatively charged plates repel negatively charged particles.
This is due to the electrostatic force of repulsion that exists between negatively charged particles.
A cathode ray is a stream of electrons emitted by a negatively charged electrode, known as a cathode.
When a cathode ray is directed towards a negatively charged plate, the electrostatic force between the negatively charged electrons in the cathode ray and the negatively charged plate causes the cathode ray to be deflected away from the plate.
In summary, cathode rays are deflected away from a negatively charged plate because of the electrostatic force of repulsion that exists between negatively charged particles.
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Related Questions
Some environmental factors are studied by the use of: telescopes electroscopes astrolabes space satellites
Answers
Some environmental factors are studied by the use of space satellites.
Space satellites are used to study various environmental factors and phenomena from space. These satellites are equipped with advanced instruments and sensors that allow scientists to observe and collect data on different aspects of the Earth's environment.
Satellites provide valuable information about the Earth's atmosphere, weather patterns, climate change, land use, ocean currents, and many other environmental factors.
They can monitor changes over time, track pollution levels, measure temperature variations, and study the interactions between different components of the environment.
By orbiting the Earth, space satellites can capture high-resolution images, gather data on different wavelengths of light, measure atmospheric composition, and monitor the planet on a global scale.
The data collected by these satellites is crucial for understanding and managing various environmental issues, such as deforestation, air pollution, natural disasters, and climate change.
Telescopes, electroscopes, and astrolabes are not specifically designed for studying environmental factors. Telescopes are primarily used for astronomical observations, electroscopes measure electric charge, and astrolabes were historically used for celestial navigation.
While they have their own applications and significance, they are not primarily employed for studying environmental factors as space satellites are.
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Answer:
Space satellites
Explanation:
As I promised, this is the answer!! I have checked and reviewed to make sure this is the correct answer, and it is!! Good Luck to everyone who views this question in the future:)
A 120 watt bulb is a connected to a 48v line what is the current the flows in the bulb
Answers
\(\\ \sf\Rrightarrow P=VI\)
\(\\ \sf\Rrightarrow 120=48I\)
\(\\ \sf\Rrightarrow I=120/48\)
\(\\ \sf\Rrightarrow I=2.5A\)
how to change exergen temporal scanner to fahrenheit
Answers
The exergen Temporal Scanner is a medical instrument that uses infrared technology to calculate body temperature. It's designed to provide a non-invasive and gentle method to measure the temperature of an individual.
Most temperature readings are taken in degrees Celsius; however, some people prefer to have the temperature reading in Fahrenheit. You can use the following steps to change the exergen Temporal Scanner to Fahrenheit:
Step 1: Turn on the scanner by pressing the 'On/Scan' button.
Step 2: Make sure the probe cover is removed before taking the reading.
Step 3: Look for the button that says 'F/C.' Press it once to change the temperature reading from Celsius to Fahrenheit.
Step 4: After pressing the 'F/C' button, wait for a few seconds to allow the scanner to display the temperature reading in Fahrenheit.
Step 5: After taking the reading, turn off the scanner by pressing the 'On/Scan' button for a few seconds. Remember that the exergen Temporal Scanner is a medical instrument, and it's essential to follow the instructions carefully to obtain accurate temperature readings.
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why can an observable interference pattern never be obtained between two monochromatic beams of light
Answers
An observable interference pattern can never be obtained between two monochromatic beams of light because they have a fixed phase relationship and no relative phase shift, resulting in a constant intensity pattern.
In order to observe an interference pattern, two or more waves must meet and interfere with each other. This interference can be constructive, where the waves add together to create a larger amplitude, or destructive, where the waves cancel each other out. However, two monochromatic beams of light have a fixed frequency and a fixed phase relationship, which means that they will always interfere in the same way, with no variation in phase or amplitude. As a result, they will produce a constant intensity pattern rather than an observable interference pattern. To create an interference pattern, multiple light sources with varying phases and amplitudes are required.
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please help me answer
Answers
D. 55 Kg mass moving at 1 m/s, is the correct answer.
The more mass the object has, the greater inertia is. It doesn't matter how fast the object is going because inertia is depended on mass.
Two positive point charges, both of magnitude 4.0x106c, are situated along the x-axis at x --2.0m and xy +2.0m. Wha the electric potential at the origin of the xy - coordinate system? 3.6*10* v -1.8x10^v OV 1.8*10* v 3.6x10v
Answers
The electric potential at the origin of the xy-coordinate system due to two positive point charges, both of magnitude 4.0x10^6C, situated along the x-axis at x=-2.0m and x=2.0m is 0.
To calculate the electric potential at the origin, we first need to find the electric potential due to each charge separately. Using the formula for electric potential due to a point charge V=kQ/r, where k is Coulomb's constant, Q is the magnitude of the charge, and r is the distance from the charge to the point where the potential is being calculated, we can calculate the electric potential due to each charge as follows:
V1=k(4.0x10^6)/2.0=2.16x10^7V
V2=k(4.0x10^6)/2.0=2.16x10^7V
Since the charges are of the same magnitude and opposite signs, their electric potentials cancel out at the origin, resulting in a net electric potential of 0. Therefore, the correct answer is 0.
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What are other names For Neurofibromatosis?
Answers
Answer:
neurofibromatosis also calles von Recklinghausen's disease.
Which is evidence that a convergent boundary once existed
Answers
There are several pieces of evidence that a convergent boundary once existed. Here are some examples:
Mountain belts: When two tectonic plates converge, they push against each other, which can cause the formation of mountain ranges. The presence of mountain belts, such as the Appalachian Mountains in North America or the Alps in Europe, is evidence that two plates once converged in that area.
Volcanic arcs: When two plates converge and one of them is an oceanic plate, subduction can occur. This can cause magma to rise to the surface and form a volcanic arc, such as the Ring of Fire in the Pacific Ocean. The presence of a volcanic arc is evidence that two plates once converged in that area.
Fossils: When two continents converge, the animals and plants living on those continents can become mixed together. This can lead to the formation of unique fossils that are found only in that area. The presence of these unique fossils is evidence that two continents once converged in that area.
Rocks: When two plates converge, the rocks in the area can become deformed and folded. The presence of folded rocks, such as those found in the Appalachian Mountains, is evidence that two plates once converged in that area.
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On a five question multiple choice test there are five possible answers of which one is correct. If a student guesses randomly and independently what is the probability that she is correct only on two questions?
Answers
Answer:
The probability that she is correct on only two questions is 0.246
Explanation:
The probability of getting an answer correct = 1/5
The probability of getting only two questions correctly
By binomial trials, we have;
P(X = K) = \(\dbinom{n}{k}\times p^{k}\times \left (1 - p \right )^{n - k}\)
P(X = 2) = \(\dbinom{6}{2}\times \left (\dfrac{1}{5} \right )^{2}\times \left (1 - \dfrac{1}{5} \right )^{6 - 2}\)
= 15×256/15625 = 768/3125 = 0.246
Therefore, the probability that she is correct on only two questions = 0.246.
. Static electricity is both an enemy and a friend.
Answers
Static electricity can be both an enemy and a friend depending on the situation.
How does Static energy work?Static electricity is a well-known electric phenomenon that involves the transfer of charged particles from one body to another. As a friend, static electricity is used in various technologies such as electrostatic spraying, electrostatic printing, and electrostatic precipitators.
However, as an enemy, static electricity can cause sparks that can ignite flammable materials, cause electronic devices to malfunction, and shock people. Static electricity can also cause clothing to cling together or hair to stand on end, which can be annoying but is generally harmless.
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ILL GIVE BRAINLIEST.
Ginny throws the Chaser up the air in a game of Quidditch with a velocity of 55 m/s. Assuming it has lost any magic and is not affected by air resistance, answer the following questions.
c) Assuming she is 10 meters off the ground when she throws it, with what velocity will it hit the ground?
Answers
1.) Determine the amount of matter, in kilograms, that must be converted
to energy to yield 1.0 gigajoule (which is 10 joules). *
Answers
Answer:
1 kilogram [kg] = 89875517.8780129 gigajoule [GJ]
Explanation:
Hopes it helps.
a cannon sits on a stationary railroad flatcar with a mass of 1000 kg. when a 10-kg cannonball is fired to the left at a speed of 50 m/s, what is the recoil speed of the flatcar? the recoil speed of the flatcar is m/s.
Answers
The recoil speed of the flatcar is0.5 m/s.
Step by Step Explanation:The cannon's momentum equals the flatcar's momentum according to Newton's third law of motion.
mv = MV........................ Equation 1:
where m is the cannon's mass, v is its velocity, and m is the flatcar's mass, v is its velocity.
Assign V as the subject of the equation V = mv/M... Equation 2
Given: M = 1000 kg
m = 10 kg,
and v = 50 m/s
Replace with V = 1050/1000 V = 500/1000
V = 0.5 m/s in equation 2.
Consequently, the flatcar's speed is equal to 0.5 meters per second.
What is Newton's Third Law of Momentum?An object interacts with another object when a push or pull is applied to it. A product of an interaction is force. Frictional force, for example, falls into the category of contact force. Non-contact force, on the other hand, includes gravitational force. Newton's third rule of motion explains that when two bodies interact, they exert force on one another. This force is referred to as an action and reaction pair.According to Newton's third law of motion,The first body receives a force that is equivalent in magnitude to the force applied in the opposite direction when one body exerts a force on another.To learn more about Newton's Third Law of Momentum refer to:
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When light hits a surface it usually bounces off at a larger angle. True or false? Justify
Answers
Answer:That only applies to highly polished surfaces, eg mirrors.
If you take a high quality laser (ie with low divergence) and aim it at a wall, you can see the spot where the laser beam reaches the wall from anywhere with a direct line-of-sight to the spot where the laser beam reaches the wall. This due to micro imperfections on the surface of the wall. At a microscopic level, the wall surface is very rough and pointing in all directions.
As to why, a beam of light bounces of a highly polished surface, I can only surmise that it is essentially due to kinematics, ie the only force opposing the light beam is normal to the surface, hence there no forces along the reflective surface. Since there are no forces along the reflective surface, the speed component of light along the reflective surface remains unchanged. However, on the plane perpendicular to the reflective surface the, the light photons bounce off at the same speed at which the hit the reflective surface because the mass of the reflective surface is much much much larger than the mass of the photons, which means that the reflective surface won’t move at all. Since conservation of momentum requires that momentum after the collision be the same as the momentum before the collision then the only way for that to happen is if the velocity of the photon perpendicular to the reflective surface is of exactly the same magnitude but in the opposite direction. Vector resolution of the speed component of the reflected beam means that the angle of reflection must be the same as the angle of incidence.
Explanation:
Sally is concerned about the X-ray images her dentist plans to take of her teeth. She has read that X-rays can cause tissue effects, such as skin reddening and hair loss. Which statement would best inform Sally of the level of risk
Answers
Answer:
B. The dentist uses X-ray radiography, which takes too short a time to cause those problems.
Explanation:
The statement B would best inform Sally of the level of risk. The dentist uses X-ray radiography, which takes too short a time to cause those problems and risk.
What is X-ray imaging?X-ray imaging provides images of human internal organs. The photos depict your body parts in various colors of black and white.
Because various tissues absorb varying quantities of radiation, this is the case. Because calcium absorbs the most x-rays, bones appear white.
When X-ray radiation passes into our bodies, it damages molecular structures and may cause injury.
Human cells are damaged by extremely high doses of radiation, as indicated by skin burns, hair loss, and an increased risk of cancer.
Sally is concerned about the X-ray images her dentist plans to take of her teeth. She has read that X-rays can cause tissue effects, such as skin reddening and hair loss.
The statement B would best inform Sally about the level of risk. The dentist uses X-ray radiography, which takes too short a time to cause those problems and risk.
Hence, statement B would best inform Sally about the level of risk.
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Consider a particle constrained to move in the x−y plane. One state the particle can be in has the following wavefunction in the x−y position representation: ψ(x,y)=Nexp{− 2σ 2
x 2
}exp{− 2σ 2
y 2
}, shere N is a normalization coefficient and σ is a length scale. A different possible state has the vavefunction φ(x,y)=Nexp{ ℏ
iay
}exp{− 2σ 2
(x−d) 2
}exp{− 2σ 2
y 2
}. a) For ψ(x,y), give the expectation values ⟨ X
^
⟩,⟨ Y
^
⟩,⟨ P
^
x
⟩, and ⟨ P
^
y
⟩, which correspond to expecation values of the position and momentum operators for the x and y directions. b) For φ(x,y), give the expectation values ⟨ X
^
⟩,⟨ Y
^
⟩,⟨ P
^
x
⟩, and ⟨ P
^
y
⟩.
Answers
Expectation value of position in the x-direction, ⟨X^⟩: We apply the position operator, X^, to the wavefunction and integrate:
⟨X^⟩ = ∫ xψ(x, y) dx dy = ∫ xNexp(-2σ^2x^2)exp(-2σ^2y^2) dx dy
To find the expectation values for the position and momentum operators, we need to apply the corresponding operators to the wavefunctions and integrate over the appropriate variables.
a) For the wavefunction ψ(x, y) = Nexp(-2σ^2x^2)exp(-2σ^2y^2):
Expectation value of position in the x-direction, ⟨X^⟩: We apply the position operator, X^, to the wavefunction and integrate:
⟨X^⟩ = ∫ xψ(x, y) dx dy
= ∫ xNexp(-2σ^2x^2)exp(-2σ^2y^2) dx dy
Similarly, we can find the expectation values ⟨Y^⟩, ⟨P^x⟩, and ⟨P^y⟩ by applying the respective operators and integrating over the variables x and y.
b) For the wavefunction φ(x, y) = Nexp(iay)exp(-2σ^2(x-d)^2)exp(-2σ^2y^2):
We follow the same procedure as in part a) to find the expectation values ⟨X^⟩, ⟨Y^⟩, ⟨P^x⟩, and ⟨P^y⟩ for the wavefunction φ(x, y).
The expectation values provide us with information about the average positions and momenta of the particle in the x-y plane for each wavefunction. By calculating these expectation values, we can gain insights into the behavior and properties of the particle in the given states.
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Which scientist described an atom made of a solid positively charged substance with electrons dispersed throughout it?.
Answers
The scientist that described an atom made a solid positively charged substance with electrons dispersed throughout it was: Ernest Rutherford.
In 1911 Ernest Rutherford proposed his atomic model in which he considered the atom as a positively, densely charged center called a nucleus in which the electrons circulate around the core with a negative charge.
He was responsible for many discoveries in the radioactivity's fields and nuclear physics.
What is an atom?The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.
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Two equal, but oppositely charged particles are attracted to each other electrically. The size of the force of attraction is 87.96 N when they are separated by 24.04 cm. What is the magnitude of the charges in microCoulombs ?
Answers
The magnitude of the electric force between two charged particles is given by Coulomb's Law:
\(F=k\frac{|q_1q_2|}{r^2}\)Where q_1 and q_2 are the charges of the particles, r is the distance between the charged particles and k is the Coulomb's Constant:
\(k=8.99\times10^9N\frac{m^2}{C^2}\)Since the magnitude of both charges is the same, the equation becomes:
\(F=\frac{kq^2}{r^2}\)The force and the distance between the particles are given, the value of k is known and the charge q is unknown. Isolate q from the equation:
\(\begin{gathered} q^2=\frac{F}{k}r^2 \\ \\ \Rightarrow q=\sqrt{\frac{F}{k}r^2}=r\sqrt{\frac{F}{k}} \end{gathered}\)Replace the values of r=24.04*10^-2m, F=87.96N as well as the value of k to find the magnitude of the charges:
\(\begin{gathered} q=r\sqrt{\frac{F}{k}} \\ \\ =(24.04\times10^{-2}m)\times\sqrt{\frac{87.96N}{8.99\times10^9N\frac{m^2}{C^2}}} \\ \\ =23.779...\times10^{-6}C \\ \\ \approx23.78\mu C \end{gathered}\)Therefore, the magnitude of the charges in microCoulombs is: 23.78μC.
Draw a neat labelled diagram for a particle moving in a circular path with a constant speed. In your diagram show the direction of velocity at any instant.
Answers
Explanation:
Particle moving in a circular path with a constant speed.
A box moves 5\,\text m5m5, start text, m, end text horizontally when force F=20\,\text NF=20NF, equals, 20, start text, N, end text is applied at angle \theta=45\degreeθ=45°theta, equals, 45, degree. What is the work done on the box by FFF during the displacement?
Answers
Answer:
70.71
Explanation:
Given that :
Force (F) = 20N
Distance moved (d) = 5 m
θ = 45°
Workdone on the box :
Workdone (W) = Fdcosθ ; where ;
F = Force, d = Displacement, θ = angle
W = 20 * 5 * cos45°
W = 100 * 0.7071067
W = 70.71 Nm
which gas is responsible for polarizination defect?
Answers
Answer:
Hydrogen gas is responsible for polarizination defect.Explanation:
During chemical reaction in a cell, hydrogen gas is produced and it accumulates, it is known as polarization.
(03.05 LC)
Which of the following best describes the use of a renewable resource
Answers
Answer:
Option C or the third option.
Explanation: Water is a renewable resource there is so much of it and it just keeps circulating through the system it doesn't run out.
Answer:
c
Explanation:
If a tennis ball has a velocity of 18 m/s and a momentum of 1.06 kg. m/s, what is the mass of the tennis ball in grams?
Round the answer to two significant figures.
Blank grams
Answers
Answer:
59g
Explanation:
The tennis ball with a velocity of 18 m/s and momentum of 1.06 kg m/s then the mass of the tennis ball in grams will be 59 grams (approx) two significant figures.
What is Momentum?Regardless of the frame of reference, momentum is a conserved quantity in any inertial frame, which means that if an enclosed system is not subject to outside influences, its total linear momentum remains constant.
Additionally, momentum is preserved in general relativity, electrodynamics, quantum mechanics, quantum field theory, and special relativity (using a modified formula). It is a manifestation of translational symmetry, one of the basic symmetries of space and time.
According to the question, the given values are :
Velocity, v = 18 m/s
Momentum, p = 1.06 kg m/s
p = m × v
1.06 kg m/s = m × 18 m/s
m = 1.06 / 18
m = 0.0589 kg or
m = 58.9 grams or 59 grams approx in two significant figures.
So, the mass will be 59 grams.
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What are some cities that were important locations in U.S. history? What happened in those cities?
Answers
Augustine, Florida - Founded by the Spanish in 1565 St. Augustine is the oldest European-founded city in the United States (continuously inhabited), and its historical charm clearly highlights this proud fact. Entire streets are lined by buildings constructed in the 17th and 18th century and the large Spanish forts of Castillo de San Marcos, in the city, and Fort Matanzas, a few miles down the coast, are reminders of the importance of this city on the northern frontier of Spanish America
Santa Fe, New Mexico - It took a few tries to get this city permanently established in 1608 by the Spaniards, but the good location was no secret to the Pueblo Indians who had occupied the area from 1050 to 1150. The historical integrity of the city is noticed immediately as all the buildings, including the Walmarts, are built to code in the unique hacienda-adobe style. Many of the buildings you see are original, especially in the downtown area, or at least built over the foundations of original
Why does a basketball thrown in the air come back to the ground after a
few seconds?
Answers
Answer:
gravity would pull the ball towards the center of the earth
Answer:
Hope it helps
Explanation:
This is because the force of earth's gravitational field is always directed downwards (towards the center of the earth. ... When the ball is thrown up, it is going against the earth's gravitational field and so, the earth's gravitational force pulls it back down, accelerating it downwards.
find the equivalent capacitance of a 4.20-mf capacitor and an 8.50-mf capacitor when they are connected (a) in series and (b) in parallel
Answers
(a) The equivalent capacitance of the 4.20 µF and 8.50 µF capacitors when connected in series is approximately 4.2017 µF.
(b) The equivalent capacitance of the 4.20 µF and 8.50 µF capacitors when connected in parallel is 12.70 µF.
When two capacitors are connected in series, the equivalent capacitance is given by the formula,
1/Ceq = 1/C1 + 1/C2
where C1 and C2 are the capacitances of the two capacitors.
Substituting the given values,
1/Ceq = 1/4.20 µF + 1/8.50 µF
1/Ceq = 0.238 µF^-1
Ceq = 1 / (0.238 µF^-1)
Ceq = 4.2017 µF (rounded to four significant figures)
When two capacitors are connected in parallel, the equivalent capacitance is given by the formula,
Ceq = C1 + C2
where C1 and C2 are the capacitances of the two capacitors.
Substituting the given values,
Ceq = 4.20 µF + 8.50 µF
Ceq = 12.70 µF
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The ratio of force and mass is known as
A. Velocity B. Momentum C. Acceleration D. Displacement
Answers
Answer:
Acceleration
Explanation:
We know that Force = Mass * Acceleration according to the formula.
Divide both sides by “Mass” which leaves us with Force/Mass = Acceleration, in word, it’s ratio of force and mass equals acceleration.
Luis does 6 joules of work in 3 seconds, what is the power he exerted?
Answers
P-Power
W-Work
t-time
P=6/3=2W (Watt)
A potato is launched from the ground at an 73 degree angle with a velocity of 48 m/s.
What maximum height will the potato reach? (Answer in meters)
Type your answer...
Answers
Answer:
107.4 meters
Explanation:
gravity is 9.8m/s^2
max height = (velocity squared times sin squared angle) ÷ ( speed of gravity times 2 )
max height = (48 squared times sin of 73 squared) ÷ ( 9.8 times 2 )
A pressure of 7x10^5N/m is applied to all surfaces of a copper cube (of sides 25 cm) what is the fractional change in volume of a cube? ( for copper B= 14x10^10N/m)
Answers
Answer:
The correct solution is "\(5\times 10^{-4}\) %".
Explanation:
The given values are:
Pressure,
\(\Delta P=7\times 10^5 \ N/m\)
for copper,
\(B=14\times 10^{10} \ N/m\)
As we know,
The Bulk Modulus (B) = \(\frac{\Delta P}{-\frac{\Delta V}{V} }\)
or,
The decrease in volume will be:
= \((\frac{\Delta V}{V})\times 100 \ percent\)
then,
= \(\frac{\Delta P}{B}\times 100 \ percent\)
On putting the values, we get
= \(\frac{7\times 10^5}{14\times 10^{10}}\times 100 \ percent\)
= \(5\times 10^{-4} \ percent\)