The acids are sour flavour, dissolves some metals and turns litmus paper red.
The bases are bitter flavour, feels slippery and turns litmus paper to blue.
What is acid and base?The German word for acid, sauer, describes its sour flavour. Since hydrochloric acid, which is used to digest food, can harm cells, our stomachs require a special lining to shield it from this acid. Acids are something we're all familiar with; they're present in tomatoes, citrus fruits, and vinegar. There are numerous varieties of salts in chemistry, and acids react with most metals, including magnesium, to produce hydrogen gas.
When two substances come into contact, corrosive substances will cause a chemical reaction that will damage or destroy the other substances.
On contact, bases feel slick. This is due to their ability to alter protein structure. Because it begins to harm the proteins in your skin, a strong base can result in severe chemical burns.
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True or False: There must be equal amounts of mass on both sides of the center of mass of an object? (Hint: Thinking about a situation involving point masses will help you answer this question) and Why is this so?
False. There does not have to be equal amounts of mass on both sides of the center of mass of an object.
What is mass?Mass is a fundamental physical property of an object or system that measures its resistance to being accelerated by a force. Mass is measured in kilograms, grams, or pounds. It is also a measure of the amount of matter present in an object or system. Mass is related to the inertia of an object; the greater the mass, the greater the inertia. In physics, mass is also used to describe the amount of energy stored in an object due to its motion.
This is because the center of mass is determined by the balanced distribution of mass across the object. If a point mass is located far away from the center of mass, the gravitational pull of that mass does not need to be countered by an equal amount of mass on the opposite side of the center of mass for the object to be balanced. Instead, the influence of the point mass on the center of mass is much smaller than the influence of the mass close to the center of mass.
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can you write the steps of how we can answer this qustion
Answer:
5 sec
Explanation:
[tex]99 \div 21.8 [/tex]
what is the orbital period of a spacecraft in a low orbit near the surface of mars? assume the radius of the satellite's orbit is about the same as the radius of mars itself, rmars
The orbital period of a spacecraft in a low orbit near the surface of mars is found to be 5.9 x 10³ secs
How does satellite orbit work?A satellite's orbit is the name for the route it takes. The capacity and purpose of the sensor(s) that a satellite is carrying are matched to its orbit. Selection of an orbit can vary depending on its altitude (height above the Earth's surface), orientation, and rotation with respect to the Earth.
The free-fall acceleration ( g ) = 3.8 m/s²
Radius of the satellite orbit = Radius of Mars ( rMars ) = 3.37 * 10⁶
R ( radius ) = 3.37 * 10⁶
g = ω2 x R
=>ω = Sqrt (R/g)
T = 2π/ω
=> 2π/ sqrt(R/g)
T = 5.9 * 10³ secs
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Spacecraft have been sent to Mars in recent years. Mars is smaller than Earth and has correspondingly weaker surface gravity. On Mars, the free-fall acceleration is only 3.8m/s2 .What is the orbital period of a spacecraft in a low orbit near the surface of Mars? Assume the radius of the satellite's orbit is about the same as the radius of Mars itself, rMars = 3.37
How many seconds would it take a conveyor belt to do 40 J of work using a 15 W motor? Round to one decimal.
Answer:
Explanation:
The amount of time it would take for a conveyor belt to do 40 J of work using a 15 W motor can be calculated by dividing the amount of work (40 J) by the power (15 W). This gives us a time of 2.67 seconds. Rounded to one decimal, this would be 2.7 seconds.
what is the relationship between the height of the ramp and the time to complete one skate cycle? be specific and use the data to support your claim.
The relationship between the height of a ramp and the time it takes to complete one skate cycle (i.e. the time it takes to go from the top of the ramp to the bottom) is that as the height of the ramp increases, the time it takes to complete one cycle also increases.
What is principle of conservation of energy?This relationship is based on the principle of conservation of energy, which states that the total energy in a closed system remains constant. In the case of a skater on a ramp, the initial potential energy at the top of the ramp converts to kinetic energy as the skater descends and then back to potential energy as the skater reaches the bottom of the ramp. Since the initial potential energy is directly proportional to the height of the ramp, and the final potential energy must be equal to the initial potential energy, the time it takes to complete one cycle will also be directly proportional to the height of the ramp.
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The wires in (Figure 1) all have the same resistance; the length and radius of each wire are noted.Rank in order, from largest to smallest, the resistivities rho1 to rho5 of these wires.
The resistivity of all the wires is same. So, the wires cannot be ranked it will be same.
Explain about resistance?
Resistance is a measure of a material's opposition to the flow of electric current. It is measured in ohms and is denoted by the symbol Ω. Resistance is caused by the collisions between the electrons flowing through a circuit and the atoms of the material they are passing through. The greater the resistance, the more energy is dissipated as heat and the slower the electrons move. Resistance also affects the voltage and current in a circuit. Higher resistance results in a lower voltage and current, while lower resistance results in a higher voltage and current.
The resistivity of a wire is determined by the material from which it is made, as well as the temperature of the material. It is not affected by the length or area of the wire. This means that regardless of the length or area of the wire, the same material will have the same resistivity. For example, a copper wire of any length or area will have the same resistivity as any other copper wire, regardless of its length or area.
Hence, the wires cannot be ranked from largest to smallest as it is in same order.
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Materials: Calculator
1. In the table below, you are given the height from which various objects fell and the time it took for those objects to fall on
Earth, the moon, and Mars. Use the data to calculate the acceleration due to gravitational force at each location.
Distance (m)
Time (s)
Acceleration due to gravity (m/s²)
Average g value for the location (m/s²)
Earth
2.25
0.680
3.08
0.793
Moon
Mars
4.04
4.57
4.68 3.55
2.20 2.26 1.58
1.38
2. What to submit:
a. Your completed table with calculations for acceleration due to gravitational force and the average value.
b. All work shown for your calculations.
(a.i) The value of the acceleration due to gravity on Earth are 9.73 m/s² and 9.8 m/s².
(b.i) The value of average acceleration due to gravity on Earth is 9.77 m/s².
(a.ii) The value of the acceleration due to gravity on Moon are 1.67 m/s² and 1.79 m/s².
(b.ii) The value of average acceleration due to gravity on Moon is 1.73 m/s².
(a.iii) The value of the acceleration due to gravity on Mars are 3.75 m/s² and 3.73 m/s².
(b.iii) The value of average acceleration due to gravity on Mars is 3.74 m/s².
What is the acceleration due to gravity of the objects?
The value of the acceleration due to gravity is calculated as follows;
h = vt + ¹/₂gt²
where;
v is the initial vertical velocity = 0t is the time of motiong is acceleration due to gravityh is the height of fallg = ( 2h ) / t²
The value of acceleration due to gravity for Earth is calculated as;
when; h = 2.25 m, and t = 0.68 s
g = ( 2 x 2.25 ) / ( 0.68² )
g = 9.73 m/s²
when; h = 3.08 m, and t = 0.793s
g = ( 2 x 3.08 ) / ( 0.793² )
g = 9.8 m/s²
Average acceleration due to gravity = ( 9.73 + 9.8 ) / 2 = 9.77 m/s²
The value of acceleration due to gravity for Moon is calculated as;
when; h = 4.04 m, and t = 2.2 s
g = ( 2 x 4.04 ) / ( 2.2² )
g = 1.67 m/s²
when; h = 4.57 m, and t = 2.26 s
g = ( 2 x 4.57 ) / ( 2.26² )
g = 1.79 m/s²
Average acceleration due to gravity = ( 1.67 + 1.79 ) / 2 = 1.73 m/s²
The value of acceleration due to gravity for Mars is calculated as;
when; h = 4.68 m, and t = 1.58 s
g = ( 2 x 4.68 ) / ( 1.58² )
g = 3.75 m/s²
when; h = 3.55 m, and t = 1.38 s
g = ( 2 x 3.55 ) / ( 1.38² )
g = 3.73 m/s²
Average acceleration due to gravity = ( 3.75 + 3.73 ) / 2 = 3.74 m/s²
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Used to show the relative magnitude and direction of all forces acting upon an object in a given situation.
This is the description of a force vector diagram or force vector. This type of diagram is used in physics and engineering to represent the forces acting on an object and the direction in which they are acting.
They are commonly used in dynamics, mechanics, and physics to analyse the motion of objects and the forces that cause them to move.
A force vector diagram is a visual representation of the forces acting on an object in a given situation. It shows the direction and magnitude of each force and how they interact with one another.
These diagrams are commonly used in physics and engineering, particularly in the study of dynamics and mechanics. They help analysts understand the motion of an object and the forces causing that motion, making it easier to predict how the object will behave under different conditions.
Force vector diagrams are essential tools for understanding the physics behind the motion of objects and for designing structures and machines that can withstand various forces.
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The complete question is-
Which diagram is used to show the relative magnitude and direction of all forces acting upon an object in a given situation?
which principle describes the uniform nature of pressure throughout a fluid? responses pascal's principle pascal's principle principle of buoyancy principle of buoyancy newton's principle newton's principle bernoulli's principle
The principle that describes the uniform nature of pressure throughout a fluid is Pascal's Principle.
What does Pascal's principle state?
Pascal's principle states that when a pressure is applied to a confined fluid, the pressure is transmitted undiminished and equally in all directions throughout the fluid. This means that if an external force is applied to a confined fluid (like a gas or liquid), this force will be evenly distributed throughout the entire container, no matter where it is applied. For example, if you were to press down on a piston in a cylinder filled with oil, the same pressure would be felt on the other side of the cylinder as well.
This principle states that "pressure applied at any point in a confined incompressible fluid is transmitted undiminished to every part of the fluid and to the walls of the containing vessel." This explains why pressure is constant throughout a fluid since any applied pressure is distributed evenly to every portion of the fluid.
Therefore, Pascal's Principle is the correct answer.
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A car uses its brakes to stop on a level road.
during this process, there must be a conversion
of kinetic energy into
(1) light energy
(2) nuclear energy
(3) gravitational potential energy
(4) internal energy
Light is a type of electromagnetic radiation with a wavelength that the human eye can perceive. Kinetic energy is what it is. There needs to be a conversion during this process.
Is light energy kinetic or potential?
Kinetic energy must be transformed into the following forms of energy: (1) light energy, (2) nuclear energy, (3) gravitational potential energy, and (4) internal energy.
Can you describe nuclear energy as potential energy?
Kinetic and potential energy can take on a variety of shapes. The energy of gravity is one of them, along with mechanical, chemical, heat, electrical, optical, and nuclear energy.
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a car starts from rest and accelerates at 4 m/s2. how much time will it take the car to reach a speed of 20 m/s?
Answer:
t=5 seconds
Explanation:
To solve, use kinematic equation #1, [tex]v_f=v_i+at[/tex], rewritten to solve for t:
[tex]t=\frac{v_f-v_i}{a}[/tex]. For this problem, let
[tex]v_f=20\frac{m}{s}\\v_i=0.0\frac{m}{s}\\a=4.0\frac{m}{s^2}[/tex]
So,
[tex]t=\frac{20.0\frac{m}{s}-0.0\frac{m}{s}}{4.0\frac{m}{s^2}}\\t=\frac{20.0\frac{m}{s}}{4.0\frac{m}{s^2}}\\t=5s[/tex]
by what multiplicative factor rk does the initial kinetic energy increase, and by what multiplicative factor rw does the work done by the force increase (with respect to the case when the particle had a mass m )? if one of the quantities doubles, for instance, it would increase by a factor of 2. if a quantity stays the same, then the multiplicative factor would be 1. you should enter the two factors separated by a comma.
The multiplicative factor rk for the initial kinetic energy is 2, as the kinetic energy doubles when the mass doubles.
What is kinetic energy?Kinetic energy is the energy possessed by an object due to its motion. It is equal to the work done to accelerate the object from rest to its current velocity. Kinetic energy is associated with the motion of an object and is measured in joules (J). Kinetic energy is one of the most important forms of energy, as it is involved in many physical and chemical processes. Kinetic energy is also related to velocity, and can be calculated using the formula KE = ½ mv2, where m is the mass of the object and v is its velocity.
The multiplicative factor rw for the work done by the force is 1, as the work done by the force does not change when the mass of the particle changes.
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A 57g tennis ball is served at 45m/s .
If the ball started from rest, what impulse was applied to the ball by the racket?
Express your answer using two significant figures.
A 57g tennis ball is served at 45m/s If the ball started from rest, the impulse was applied to the ball by the racket is 2.565 Kgm/s.
What does the term impulse mean?A change in momentum is brought about by an impulse, which is a specific amount of force applied for a specific period of time. For this reason, it is F× t. For instance, when you hit a ball with a cricket bat, you exert force for a brief moment (in this case, a very short moment) to change (or transfer) the momentum of the ball.
Given information,
m = 57g = 0.057kg,
velocity = 45m/s
impulse = mass( change in velocity)
impulse = 0.057×(45-0)
impulse = 2.565 Kgm/s.
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When will the gravitational force between you and the sun be greater today at noon or tomorrow at midnight?
You will be drawn toward the sun at midday, but the world will also be drawn in that direction. You will be lifted off your feet at midnight, but the moon also lifts you.
By gravitational force, what do you mean?The gravitational attraction causes any two grain particles to be drawn toward one another. It mentions the gravitational pull. The force will constantly be generated along the line joining the two loads in the direction towards the other mass, as indicated by the formula F=Gm1m2r2.
Where is there gravitational force?Anything with mass is subject to gravity. Higher mass objects are subject to stronger gravity. Gravity lessens as distance increases as well. Because of this, objects are more attracted to one another when they are closer to one another.
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Two small aluminum spheres, each having mass 0.0250 kg, are separated by 80.0 cm. Their radius is much smaller than their separation. How many electrons does each sphere contain? (The atomic mass of aluminum is 4.482 x 10-26 kg/atom, and its atomic number, the number of protons and electrons per atom, is 13.) How many electrons would have to be removed from one sphere and added to the other to cause an attractive force between the spheres of magnitude 1.00 x 104 N (roughly one ton)? Assume that the spheres may be treated as point charges. What fraction of all the electrons in each sphere does this represent?
How many electrons would have to be moved by one ball to the next in order to have a 1.00 x 104 N imbalance between them? 7.2 x 1010 is equal to fractional = n/ = (5.25 x 1015)/(72.8 x 1023).
What do you mean by magnitude?In terms of physics, magnitude is just "distance or quantity." It demonstrates the size, direction, and speed of an item in both relative and absolute terms. It's used to indicate the size or scope of something. In physics, the term "magnitude" often refers to the a size or amount.
Calculation
m = mass of each aluminium sphere = 0.0250 kg = 0.0250 x 1000 g = 25 g
M = atomic mass = 26.982 g/mol
n = number of moles
Number of moles is given as
n = m/M
n = 25/26.982
n = 0.93
N₀ = Avogadro's number = 6.023 x 10²³
N = number of atoms
Number of atoms is given as
N = n N₀
N = (0.93) (6.023 x 10²³) = 5.6 x 10²³ atoms
= number of electrons per atom = 13
= total number of electrons
Total number of electrons are given as
= N
= (13) (5.6 x 10²³)
= 72.8 x 10²³ electrons
b)
F = magnitude of electric force between the two spheres = 1 x 10⁴ N
r = distance between the spheres = 80 cm = 0.80 m
Q = magnitude of charge on each sphere = ?
Using Coulomb's law, force between the spheres is given as
F = k Q²/r²
inserting the values
1 x 10⁴ = (9 x 10⁹) Q²/(0.80)²
Q = 8.4 x 10⁻⁴ C
n = number of electrons removed
e = magnitude of charge on each electron
using the equation
Q = n e
8.4 x 10⁻⁴ = n (1.6 x 10⁻¹⁹)
n = 5.25 x 10¹⁵
c)
Fraction = n/ = (5.25 x 10¹⁵)/(72.8 x 10²³) = 7.2 x 10⁻¹⁰
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a ball is thrown vertically upward. what is the nearest value of its acceleration when it reaches its maximum height?
The acceleration of the ball when it reaches its maximum height is approximately 9.8 m/s2.
What is accelaration?Acceleration is the rate of change of velocity over time. It is a vector quantity, meaning it has both magnitude and direction. Acceleration can be caused by forces, such as gravity, friction, or thrust. It is a measure of how quickly an object is speeding up, slowing down, or changing direction. Acceleration can be positive, negative, or zero. Positive acceleration means an object is speeding up, while negative acceleration means an object is slowing down. Zero acceleration means an object is going at a constant speed in a straight line.
The acceleration of a ball thrown vertically upward when it reaches its maximum height is approximately equal to the acceleration due to gravity, or 9.8 m/s2. This is because the ball is no longer being propelled upwards and is instead falling back down to the ground. Thus, the acceleration of the ball when it reaches its maximum height is approximately 9.8 m/s2.
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your first response to reduced visibility should be: select one: a. looking for road edge markings to guide you. b. reducing your speed. c. turning on your windshield wipers. d. turning on your headlights.
Your first response to reduced visibility should be reducing your speed.
What does getting visible entail?The term "visibility" refers to how far or well you are seeing in a certain meteorological scenario. Poor visibility prevailed. 2. a noncount noun When something is said to be visible, such as a situation or an issue, it refers to how much it is observed or observed by other people.
What, for instance, does visibility mean?Visibility can indicate both "how well you can see" and "how well others will see something." Your running leggings' reflective stripes make you visible in the dark as they make you more visible to others.
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you measured a force of [var:force meas] n. the glider in your trial has a mass of [var:mass] g. what equation allows you to calculate acceleration using the force and mass?
The equation allows you to calculate acceleration using the force and mass is F=m. Where m is mass and a is acceleration.
What is the relationship between force and acceleration?According to Newton's second rule of motion, a body's rate of momentum change is directly proportional to the force being applied to it, and momentum change occurs in the direction the force is being applied.
Explain what is acceleration?Acceleration is the rate at which velocity changes over time in both speed and direction. Acceleration refers to the change in speed or direction of an item or point travelling straight forward. Due to the constantly changing direction of motion around a circle, motion even at constant speed accelerates.
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A farsighted person has a near point of 72 cm rather than the normal 25 cm. What strength lens, in diopters, should be prescribed to correct this vision problem?
The strength lens to be prescribed to correct this vision problem is 2.61 diopters.
Near point = 72cm
Normal point = 25cm
Using the lens formula -
1/f = 1/u + 1/v
where
f is the focal length
v is the image distance
u is the object distance
Substituting the values in the formula -
1/f = 1/25 + 1/(-72)
1/f = 0.0261
f = 1/0.0261
Therefore,
f = 38.31
f = 0.383m
Now, since the dioptric power is inverse of the focal length strength;
Therefore,
D = 1/f
= 1/ 0.383
= 2.61
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Please help thank you!!
The blood that is leaving at B has a lower concentration of carbon dioxide.
What is the blood?We know that the blood can be shown to be a very important part of the circulatory system of the body of the individual. We know that the circulatory system is in charge of the movement of the blood and the lymph in the body.
Let us also recall that there is a very important interplay between the circulatory system and the respiratory system because in the both systems, there is the exchange of materials as we can see in the image.
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under what conditions can an object be treated as a particle? (note that some quiz questions have multiple correct answer. the check box is square instead of round on these questions.) select one or more: a. object must be able to be treated as round b. forces on object must be concurrent c. object must not deform under the forces d. object must not change shape e. object must not be large f. object must not rotate
Forces on object must be concurrent. Object must not deform under the forces. Object must not change shape. Object must not be large. Object must not rotate.
What is force?Force is a physical quantity that represents the interaction between two objects. Force can cause an object to accelerate or change its velocity. It can also cause a change in an object's shape or orientation. There are several types of force, such as gravitational force, electromagnetic force, and nuclear force.
An object can be treated as a particle under the following conditions:
Forces on object must be concurrent. Object must not deform under the forces. Object must not change shape. Object must not be large. Object must not rotate.
It's important to note that the concept of treating an object as a particle is a simplifying assumption used in some branches of physics, such as mechanics, and is only valid under certain conditions.
When an object is treated as a particle, it is assumed to have no internal structure, and that all forces acting on it act at a single point. The object is also assumed to be small enough that its deformation or shape change under forces can be ignored. Additionally, it is also assumed that the object does not rotate.
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reen light is 550 nm (0.00000055 meters), and light moves at 299,792,458 m/s, what is the frequency of the green light?
The frequency of the green light is approximately 5.45×10¹⁴ Hz, for wavelength 550nm.
What is frequency?Frequency is the dimension of the number of times that a repeated event occurs per unit of time.
The frequency of wave-like patterns including sound, electromagnetic waves (similar as radio or light), electrical signals, or other swells, expresses the number of cycles of the repetitious waveform per second.
In SI unit is 1 Hz means one cycle (or wave) per second.
The frequency of a wave can be calculated by using the equation:
frequency (f) = velocity (v) / wavelength (λ)
In the case of green light, the velocity is given as 299,792,458 m/s and the wavelength is given as 550 nm (0.00000055 meters). upon placing the values in the equation,
f = 299,792,458 m/s / 0.00000055 m
To get the frequency of the green light in hertz (Hz), which is the unit of frequency in the International System of Units (SI).
f = 5.454545454545454545454545454545e+14 Hz
So, the frequency of the green light will be approximately 5.45×10¹⁴ Hz.
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how much heat transfer is required to raise the temperature of a - aluminum pot containing of water from to the boiling point and then boil away of water?
The heat transfer is required to raise the temperature of a - aluminum pot containing of water from to the boiling point is 5.896 x 10^5 cal.
What does "heat transfer" mean?Heat transfer is specified as "the transmission of heat over the boundary of the system due to a difference in temperature between the system and its surroundings" by thermodynamic systems.
m1 = 0.75kg
m2 = 2.5kg
T1 = 30.6 °C
Tv = 100°C
m = 0.75
The heat required = Q = (m1cp1 + m2cp2) (Tv-T1);
=> (750 x 0.214 cal/g.K + 2500 x 1 cal/g.K) (100-30.6)
=> 1.846 x 10^5cal.
Qv = λv m = 540cal/g.K x 750g =>4.05 x 10^5cal.
Qt = Q + Qv = 1.846 x 10^5cal + 4.05 x 10^5cal
=> 5.896 x 10^5 cal
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(a) How much heat transfer is required to raise the temperature of a 0.750-kg aluminum pot containing 2.50 kg of water from 30.6∘C to the boiling point and then boil away 0.750 kg of water?
an airplane is heading east at 400 knots then encounters a wnd with a velocity of 50 knots blowing toward the northeast. determine the direction of the airplane when it encounters the wind
The direction of the airplane when it encounters the wind is approximately northeast. determine the direction of the airplane when it encounters the wind.
What is airplane ?
An airplane is a powered, fixed-wing aircraft that is propelled forward by thrust from a jet engine or propeller. Airplanes come in a variety of sizes, shapes, and wing configurations. The airplane is one of the most important forms of transportation, allowing for rapid and efficient travel across distances both near and far.
Airplanes are used for commercial air travel, military operations, private aviation, cargo transport, and leisure activities. To fly an airplane, a pilot must be knowledgeable in aviation regulations, safety protocols, and aircraft mechanics. With advances in technology, airplanes have become increasingly sophisticated, providing a safe and comfortable way to travel.
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10 differences between volume and density
Answer:
Hope this helps :)
Explanation:
Look at the attached image
The figures below show a ball traveling on a flat surface in a circular path. You are looking down at the ball. Which figure correctly depicts what happens if a portion of the wall is removed?
Centripetal force is the force that prevents an object from travelling in a straight line while it is moving due to its speed in a particular direction, or its velocity.
What type of movement is circular rotation?While an object moves because of its speed in a certain direction, or its velocity, centripetal force is the force that keeps the object moving in a circular motion. By pushing an object in the direction of the circle's centre, it achieves this.
The friction between the tyres and the road causes the centripetal force that makes the car turn in a circular motion. The car will move in a larger-radius curve and exit the road if the coefficient of friction is not at a minimum.
The rotating motion known as circular motion involves a rigid body moving in a plane while maintaining a constant distance between its centre of mass and its axis of rotation.
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a single electron orbits a lithium nucleus that contains three protons ( 3e). the radius of the orbit is 1.76 10-11 m. determine the kinetic energy of the electron.
The kinetic energy of the electron orbits a lithium nucleus that contains three protons ( 3e) whose radius of the orbit is 1.76x10-11 m is 123eV.
Given the lithium nucleus contains 3 protons also 3 electrons
The radius of orbit (r) = 1.76x10-11 m
We know the resultant force acting on the nucleus is F.
F = k x q(nu) x q(e)/r^2 = k x (3e) x(e) /r^2 = 3ke^2/r^2
This force is equal to centripetal force = mv^2/r where m is mass of electron, v is velocity
Then 3ke^2/r^2 = mv^2/r
3ke^2/r = mv^2
The kinetic energy is taken as (KE) = 1/2mv^2 = 3ke^2/2r
Here k = 8.99 x 10^9 Nm^2/C^2 and the charge on electron
(e) = 1.6 x 10^-19C
Then KE = 3 x 8.99 x 10^9 x ( 1.6 x 10^-19)^2 / 2 x 1.76x10-11
KE = 1.96 x 10^-17J = 122.6eV
Hence the required kinetic energy of the electron is 123eV.
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what is the escape speed for an electron initially at rest on the surface of a sphere with radius of 1.0 cm and a uniformly distributed charge of 1.5*10^-15
v = 22.492 k ms-1 is the escape speed of an electron that is initially at rest on the surface of a sphere.
What do orbital and escape speeds mean?The bare minimum speed required to reach infinity and escape the gravitational pull of a massive body is known as escape velocity. The orbital velocity of a body around which a small object revolves is referred to as orbital velocity. The link between orbital velocity and escape velocity is proportional.
What is the short definition of escape speed?The minimal speed necessary for an object to disengage from the gravitational pull of a large object is known as escape speed, often referred to as escape velocity. For instance, if we think of the earth as a large body.
1/2mv²= kqQ/r
v= √2kqQ/rm
v= √2×(9×10⁹)×(1.6×10⁻¹⁹)×(1.6×10⁻¹⁵)/(0.01)×(9.109×10⁻³¹)
v = 22492 ms^-1
v = 22.492 k ms^-1
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can there be a non-zero electric field at a point in space where no charged object is present? can there be an electric field equal to zero at a point where a charged object is present?
Yes, there can be a non-zero electric field at a point in space where no charged object is present. No, there cannot be an electric field equal to zero at a point where a charged object is present.
An electric field is defined as the force experienced per unit charge at a point in space. Even if there is no charged object present, an electric field can be present due to the presence of other charges in the surrounding area. For example, if there are charges present on a nearby conductor, the electric field can extend into the surrounding space.
On the other hand, it is not possible for an electric field to be equal to zero at a point where a charged object is present. The electric field is a measure of the force exerted on a test charge placed at that point, and a charged object exerts an electric force on other charges. Therefore, an electric field must be present at any point where a charged object is present.
The electric field can be zero at a certain point in space if there are no charges around that point or if the charges around that point balance each other out to create a net zero electric field.
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a 500-kilogram sports car accelerates uniformly from rest, reaching a speed of 30 meters per second in 6 seconds. what distance has the car traveled during the 6 seconds? select all that apply
The distance has the car traveled during the 6 seconds is 90 m.
What does the acceleration means?The rate during which velocity change is called acceleration. Acceleration usually indicates a change in speed, but not often. An object that pursues a circular route while keeping a constant speed is still moving forward because the vector of its motion is altering.
Given -
Mass m = 500kg
Initial velocity ,u = 0
Final velocity ,v = 30 m/s
Time , t = 6s
So, acceleration , a =?
By using first equation of motion = v= u+at
= 30 = 0+ a ×6
=30 = 0+6a
=6a = 30 = a = 30/6 = a = 5m/s^2
So, distance travelled = s= ?
By using second equation of motion = s = ut+ 1/2 at^2
= s = 0× 6+1/2×5×6×6
s = 0+90
s= 90 m
so the answer is = 90m
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