A metal sphere with radius ra is supported on an insulating stand at the center of a hollow, metal spherical shell with radius rb. There is charge + q on the inner sphere and charge − q on the outer spherical shell as shown below. Take the potential V to be zero when the distance r from the center of the spheres is infinite.(Figure 1) Calculate the potential V(r) for r>rb. (Hint: The net potential is the sum of the potentials due to the individual spheres.) Use ϵ0 as the permittivity of free space and express your answer in terms of some or all of the variables r, ra, rb, q, and any appropriate constants.
Answers
The potential inside the inner sphere will be "0".
The inside sphere would be charged positively. Increased potential expressions (\(V_1\)) because of the interior metal sphere, such as:
\(V_1 = \frac{kq}{r}\)The outer area sphere would be charged positively. Increased potential expressions (\(V_2\)) because of the interior metal sphere, such as:
\(V_2 = \frac{k(-q)}{r}\)hence,
Throughout the inner sphere, the potential will be:
→ \(V = V_1+V_2\)
By substituting the values, we get
→ \(= \frac{kq}{r} +(-\frac{kq}{r} )\)
→ \(= \frac{kq}{r} -\frac{kq}{r}\)
→ \(= 0\)
Thus the answer above is right.
Learn more:
https://brainly.com/question/16013743
Related Questions
A 0.060 kg tennis ball moving with the speed of 2.50 m/s, collides head-on with a 0.090 kg ball initially moving away from it at a speed of 1.15 m/s. Assuming a perfectly inelastic collision, what are the speed and direction of each ball after the collision?
a
1.50 m/s same direction of the tennis ball's initial motion
b
1.69 m/s same direction of the tennis ball's initial motion
c
2.25 m/s opposite direction of the tennis ball's initial motion
d
1.85 m/s opposite direction of the tennis ball's initial motion
Answers
The speed of each ball after the collision is 1.69 m/s and direction is same of the tennis ball's initial motion.
What is principle of momentum conservation?According to the principle of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.
According to principle of momentum conservation:
the velocity of the two ball mass after the perfectly inelastic collision is
= (0.060 kg × 2.50 m/s + 0.090 kg × 1.15 m/s) ÷ ( 0.060 kg + 0.090 kg)
= 1.69 m/s
Hence, the speed of each ball is 1.69 m/s.
Learn more about momentum here:
https://brainly.com/question/24030570
#SPJ1
If an object has applied force of 20 N and a frictional force of 5 N what is the net force?
Answers
Answer:
Net force = 15 N
Explanation:
Given that,
Applied force on an object = 20 N
Frictional force = 5 N
We need to find the net force acting on the object.
Friction is an opposing force. It acts in the opposite direction.
Net force = Applied force - Frictional force
= 20 N - 5 N
= 15 N
Hence, the net force acting on the object is 15 N.
WILL GIVE BRAINIEST PLZ HEP!!!!!!
Which is a component of skill-related fitness?
Flexibility
Reaction time
Muscular strength
Body Composition
Answers
Answer:
B. Reaction Time
Explanation:
Reaction Time is the amount of time it takes to respond to anything.
can you ans please ?????????????????????????????????????????
Answers
Answer:
ans a
Explanation:
as the circuit should not be completed until switch is closed
Object 1 with mass 1=3.25 kg
is held in place on an inclined plane that makes an angle
of 40.0∘
with the horizontal. The coefficient of kinetic friction between the plane and the object is 0.535.
Object 2 with mass 2=4.75 kg
is connected to object 1 with a massless string over a massless, frictionless pulley. The objects are then released.
Calculate the magnitude
of the initial acceleration.
Calculate the magnitude
of the tension in the string once the objects are released.
Answers
The magnitude of the initial acceleration of the object is 4.2 m/s².
The tension in the string once the object starts moving is 13.65 N.
What is the magnitude of the initial acceleration?The magnitude of the initial acceleration of the object is calculated by applying Newton's second law of motion as follows;
F(net) = ma
m₂g - μm₁g cosθ = a(m₁ + m₂)
where;
m₁ and m₂ are the masses of the blocksg is acceleration due to gravityμ is coefficient of frictionθ is the angle of inclinationa is the acceleration(4.75 x 9.8) - (0.535 x 3.25 x 9.8 x cos40) = a(3.25 + 4.75)
33.5 = 8a
a = 33.5/8
a = 4.2 m/s²
The tension in the string once the object starts moving is calculated as;
T = m₁a
T = 3.25 x 4.2
T = 13.65 N
Learn more about acceleration here: https://brainly.com/question/14344386
#SPJ1
Pls give me the answer asap
Answers
Raju's statement is not correct fully as it states that uniform motion is seen only in objects traveling in a straight line while ,Tejas is correct in pointing out that uniform motion can also be observed in objects traveling in circular motion.
Uniform motion refers to the movement of an object at a constant speed in a particular direction. In this type of motion, the object covers equal distances in equal intervals of time. Suppose for example (straight line movement), a car moving on a straight road at a constant speed of 60 km/h. If the car maintains this speed without any change in direction, it exhibits uniform motion. Other example is regarding the object moving in circular path where a race car driving around a circular track with a radius of 100 meters. If the car maintains a constant speed of 40 meters per second and completes each lap in the same amount of time, it exhibits uniform motion. Therefore, Tejas' justification is valid, as he states that uniform motion can indeed be observed in objects traveling in circular paths, in addition to objects moving in straight lines.
Learn more about linear motion here
https://brainly.com/question/118814
#SPJ1
A box is at rest on the table. What can you say about the forces acting on the box? The upward____ and the downward ____ are balanced 1st blank options are: Applied force, normal force,frictional force2nd blank options are: drag force, gravitational force, tension
Answers
Since the box rests on the table, net force is zero, both forces are balanced.
Those forces are:
The Gravitational force that points downwards, (weight)
The normal force that reacts to the gravitational force.
Answers:
Normal force
Gravitational force
4.
a) A loaded box car has a total mass of 6.80 x 10 kg. If the train is travelling at a speed
of 23.7 m/s, what is the mechanical kinetic energy of the box car?
b) If a family car has a mass of 1237 kg, how fast would it have to go to have the same
mechanical kinetic energy as the box car in part a)?
GIVING BRAINLIEST
Answers
Mechanical kinetic energy is the energy of an object due to its motion.
a) Mechanical kinetic energy = (1/2)*mass*(velocity)^2
Mechanical kinetic energy = (1/2)*(6.80 x 10^3 kg)*(23.7 m/s)^2
Mechanical kinetic energy = 3.27 x 10^7 J
b) The mechanical kinetic energy of a moving object can be calculated using the following formula:
KE = 0.5 * m * v²,
where m is the mass of the object and v is the velocity.
In this case, we know the mass of the family car (1237 kg) and the mechanical kinetic energy of the box car (50444 J). To calculate the speed of the family car, we can rearrange the formula to solve for v:
v = √(2*KE/m)
v = √(2*50444/1237)
v = 42.62 m/s
What is Mechanical kinetic energy?
Mechanical kinetic energy is the energy associated with the movement of a body or object. It is also known as the energy of motion and is equal to one half of the mass of the object multiplied by the square of its velocity.
To know more about mechanical kinetic energy,
https://brainly.com/question/17051553
#SPJ1
The graph provided represents voltage and current data for resistor R. What is the resistance of R?
0.50 Ω
2.0 Ω
9.0
4.5
Answers
B. The resistance R of the circuit is determined as 2.0 ohms.
What is ohm's law?
Ohm's Law states that the current flowing in a circuit is directly proportional to the applied potential difference and inversely proportional to the resistance.
V = IR
R = V/I
The slope of the given graph is the resistance of the circuit.
Choosing point (0 A, 0 V) and (4.5 A, 9 V)
R = ΔV/ΔI
R = (9 - 0 ) / (4.5 - 0)
R = 9/4.5
R = 2.0 ohms
Thus, the resistance R of the circuit is determined as 2.0 ohms.
Learn more about resistance here: https://brainly.com/question/17563681
#SPJ1
A 0.5 kg basketball moving 5 m/s to the right collides with a 0.05 kg tennis
ball moving 30 m/s to the left. After the collision, the tennis ball is moving 34
m/s to the right. What is the velocity of the basketball after the collision?
Assume an elastic collision occurred.
O A. 11.4 m/s to the left
O B. 11.4 m/s to the right
O C. 1.4 m/s to the right
O D. 1.4 m/s to the left
Answers
Answer:
1.4 m/s to the left
Explanation:
just took it c:
True or False: Substances will always boil at the same temperature?
Answers
Answer:
false
Explanation:
not everything has the same boiling point, or freezing point at that matter
Which statement uses power correctly? (1 point)
Power is the rate at which force is applied.
Power is the rate at which work is done.
Work is the rate at which power is done.
Force is the rate at which power is applied.
Answers
Answer:Hi , it Power is the rate at which work is done.
Explanation:
Anytime a force transports something over a distance, work is performed. The quantity of energy transferred or work completed can be computed by multiplying the force by the distance travelled in the force's direction. Thus, option B is correct.
What Power is the rate of work being completed?The watt (W), which represents the rate of 1 joule of work per second, is the SI unit of power. Power is directly proportional to the job completed and inversely proportional to the amount of time required to complete the work.
You can obtain a corollary for the power equation by keeping in mind that work is defined as force times displacement (W = F×d).
Work is completed at a rate determined by power. It is the ratio of work to time. It can be calculated mathematically using the next equation. The most widely used metric unit of power is the Watt.
Therefore, Power is the rate at which labor is accomplished.
Learn more about power here:
https://brainly.com/question/14282646
#SPJ2
Suppose a grower sprays (2.2x10^1) kg of water at 0 °C onto a fruit tree of mass 180 kg. How much heat is released by the water when it freezes?
Answers
There is no temperature change which drives heat flow, thus no heat will be released by the water.
Heat released by the water when it freezesThe heat released by the water when it freezes is calculated as follows;
Q = mcΔФ
where;
m is mass of waterc is specific heat capacity of waterΔФ is change in temperature = Фf - ФiInitial temperature of water, Фi = 0 °C
when water freezes, the final temperature, Фf = 0 °C
Q = 22 x 4200 x (0 - 0)
Q = 0
Since there is no temperature change which drives heat flow, thus no heat will be released by the water.
Learn more about heat flow here: https://brainly.com/question/14437874
what is the mathematical definition of momentum? what is a more conceptual or descriptive definition of momentum?
Answers
Answer:
Momentum can be defined as "mass in motion." All objects have mass; so if an object is moving, then it has momentum - it has its mass in motion.
Explanation:
Which statement accurately describes a magnetic object? :
HURRY I WILL GIVE BRAINLIEST
A: They have many spinning electrons oriented in the same direction that create magnetic fields.
B: They have more electrons than non-magnetic materials that create magnetic fields.
C: Non-paired electrons spin in opposite directions that create a magnetic field.
D: Paired electrons spin in opposite directions to create a magnetic field.
Answers
The correct statement which best describes a magnetic object from among the options above is:
They have many spinning electrons oriented in the same direction that create magnetic fields.
The correct answer choice is option a.
How magnetic object carry their electrons in the same direction in a a magnetic field.When magnetic material spins its electrons in the same axis in the magnetic field, the force of current which passes through the same direction results in the attraction which exists between the magnetic object and magnetic substance.
So therefore, we can now confirm that when we consider the orientation of electrons of magnetic material in a direction similar to field, it causes attraction.
Read more on magnetic field:
https://brainly.com/question/7802337
#SPJ1
In hiking, what fitness component is required of you
Answers
The helium-filled balloons below are carrying negative electric charges, as shown. Attach two of the balloons to the hooks below to show what would happen if a red balloon and a blue balloon were brought near each other. Plzz help
Answers
Answer:
these are in the hooks the balloons repel each other if the hooks are isolated.
Explanation:
In electrostatics, charges of the same sign repel and of a different sign attract each other.
With this explanation we analyze the situation presented, they indicate that the balloons have a negative taste, so when these are in the hooks the balloons repel each other if the hooks are isolated.
If the hooks are connected to Earth, the poop of the balloons is neutralized, so there is neither attraction nor repulsion.
Answer:
Here you go : )
Explanation:
1. In order to generate a current from a magnet, which of the following would generate a current?
a. Spinning a magnet near a wire
b. Placing the north end of a magnet near a wire
c. Place the south end of a magnet near a wire
2. In order for a circuit to function, which of the following must be true?
a. The circuit cannot have more than 3 bulbs attached
b. The circuit must have an switch placed in the circuit in the open position
c. The circuit must make a complete loop and must have all parts connected to that loop
Answers
Spinning a magnet near a wire would generate a current.
The circuit must make a complete loop and must have all parts connected to that loop.
What is the spinning magnet?When a magnet approaches a conductor, such as a wire, the magnetic field changes, causing the wire to conduct electricity. Electromagnetic induction is a process that underlies the operation of electric motors and generators.
Electromagnetic induction and is the basis for how generators and electric motors work and it explains the fact that current is generated by a spinning a magnet near a wire.
Learn more about spinning magnet:https://brainly.com/question/14421392
#SPJ1
Tension is actually a force that tends to
Answers
Answer:
Pull towards itself.
Explanation:
That's what I know.
Tension is a force that tends to pull or stretch an object. A flexible material, like a rope, cable, or string, is used to transmit the force.
A force known as tension has a tendency to pull or stretch an object. When a flexible medium, like a rope, cable, or string, is under strain and supporting an imposed load or weight, it transmits force via the flexible medium.
A rope or cable that is under tension receives equal and opposing forces pulling it in different directions at either end. For instance, the tension in a rope will be the same along its whole length if both ends are pulled with equal effort.
When you use a pulley system to hoist a weight, suspend an object from a rope, or support the weight of traffic on a bridge, tension can be present.
Therefore, Tension is a force that tends to pull or stretch an object.
To know more about the tension:
https://brainly.com/question/10169286
#SPJ6
Which statement is true of all matter?
A. It must have volume only
B. It must be visit
C. It must be solid
D. It must have made and volume
Answers
Answer:
D. It must have mass and volume
Explanation:
In science, matter is referred to as any substance that has weight and occupies space. This means that the substance must have a MASS of its own when weighed and also a VOLUME.
Matter include elements, molecules, humans, etc. In fact, almost every substance on Earth is considered MATTER. Therefore, the fact that a substance must "have mass and volume" is true for all matter.
(1) Thevelocity of a plantier is given by V(t) = 20t² - 100€ + 5got a, when will the accteration of a particle is zero by what the velocity of the Particles when its acceleration is zero
Answers
Answer:
I really don't want to go out for a week and I deserve to be wit me she said that she would have been able even better then again this year moma and she was the one that was earlier than you and my parents are going through a tough time and it was broken down into the last time I was coming from but I see an feel a lot of hate
Explanation:
no exceptions
Is there a difference between shapes when plotting Uniform acceleration towards (+)directtion,Uniform acceleration towards (-)direction, Uniform deceleration towards (+) direction and Uniform deceleration towards (-) direction in displacement time graph.Can you draw the shapes for each type ?
Answers
Explanation:
Yes, there are differences in the shapes of position-time graphs for uniform acceleration and uniform deceleration in different directions. Let's consider each case separately:\(\hrulefill\)
(1) - Uniform acceleration towards the positive direction:
In this case, the object is moving in the positive direction with a constant acceleration. The displacement-time graph will typically be a curve that starts from an initial position and shows a steady increase in displacement over time. The shape of the graph will depend on the specific acceleration value.
(2) - Uniform acceleration towards the negative direction:
In this case, the object is moving in the negative direction with a constant acceleration. The displacement-time graph will also be a curve, but it will show a steady decrease in displacement over time.
(3) - Uniform deceleration towards the positive direction:
In this case, the object is initially moving in the positive direction but is slowing down with a constant deceleration. The displacement-time graph will be a curve that starts with a positive slope and gradually levels off.
(4) - Uniform deceleration towards the negative direction:
In this case, the object is initially moving in the negative direction but is slowing down with a constant deceleration. The displacement-time graph will be a curve that starts with a negative slope and gradually levels off.
What would the Roche limit be for an earth-orbiting body with the same density as iron(8.0g/cm ^3)
Answers
The 35m would the Roche limit be for an earth-orbiting body with the same density as iron(8.0g/cm ^3).
What is density ?
How much material an object contains per unit volume is determined by the density of the substance. It is symbolized by the letter D, however it can also be represented by the symbol. The density of a substance reveals how dense it is in a certain space. The definition of density is the mass of a substance per unit volume.
What is velocity ?
It is measured in meters per second in the SI (ms -1 ). A body is considered to be accelerating if there is a change in the magnitude or direction of its velocity.
Therefore, The 35m would the Roche limit be for an earth-orbiting body with the same density as iron(8.0g/cm ^3).
Learn more about density from the given link.
https://brainly.com/question/13692379
#SPJ1
Describe the setup of the electromagnet. Why does the wire need to be a conductive material?
Answers
An electromagnet consists of a conductive wire wrapped around a magnetic core, creating a magnetic field when an electrical current is passed through it.
An electromagnet is a type of magnet that is created by running an electrical current through a wire. The setup of an electromagnet involves a few basic components. First, there must be a wire that is conductive, meaning that it can conduct electricity. This wire is usually wrapped around a core, which is often made of iron, steel, or another magnetic material. When an electrical current is run through the wire, it creates a magnetic field around the wire. This magnetic field then magnetizes the core, creating an even stronger magnetic field. The strength of the electromagnet can be controlled by adjusting the amount of current that is run through the wire. The wire must be a conductive material because it needs to be able to carry the electrical current that creates the magnetic field. If the wire were not conductive, then the electrical current would not be able to flow through it, and the magnetic field would not be created. In summary, the setup of an electromagnet involves a conductive wire wrapped around a magnetic core, which is magnetized by the electrical current running through the wire. The wire must be conductive to carry the electrical current and create the magnetic field.For more questions on electromagnet
https://brainly.com/question/26616379
#SPJ8
a system of levers with v.r of 25 overcomes a resistant force of 3300n. when an effort of 165n is applied to it. i) calculate m.a of the system ii) its efficiency
Answers
i) Mechanical advantage of the system is 25. ii) Efficiency of the system is 20%.
What is efficiency?Efficiency is a measure of how much of the input energy or work is converted into useful output energy or work
Given : V.R. (Velocity Ratio) = 25, Resistant force = 3300 N, Effort force = 165 N
i) Mechanical Advantage (M.A.) can be calculated using the formula: M.A. = V.R. = 25
Therefore, the mechanical advantage of the system is 25.
ii) Efficiency can be calculated using the formula: Efficiency = (Output work / Input work) x 100%
Output work = Resistance x Distance moved by resistance
As Input work =Effort x Distance moved by effort
Effort x Distance moved by effort = Resistance x Distance moved by resistance
165 N x distance = 3300 N x distance/25
distance = (25 x 165 N) / 3300 N
distance = 1.25 m
Output work = Resistance x Distance moved by resistance
= 3300 N x 1.25 m
Output work = 4125 J
As Input work= Effort x Distance moved by effort
= 165 N x 1.25 m
Input work = 206.25 J
Efficiency = (Output work / Input work) x 100%
= (4125 J / 206.25 J) x 100%
Efficiency = 20%
Therefore, efficiency of the system is 20%.
To know more about force, refer
https://brainly.com/question/12785175
#SPJ1
a student holds a 3.0kg mass in each hand while sitting on a rotating stool. when his arms are extended horizontally, the masses are 1.0m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. if the student pulls the masses horizontally to 0.30m from the axis of rotation, what is his new angular speed
Answers
Answer:
Explanation:
Due to change in the position of 3 kg mass , the moment of inertia of the system changes , due to which angular speed changes . We shall apply conservation of angular momentum , because no external torque is acting .
Initial moment of inertia I₁ = M R² = 3 x 1 ² = 3 kg m²
Final moment of inertia I₂ = M R² = 3 x .3 ² = 0.27 kg m²
Applying law of conservation of angular momentum
I₁ ω₁ = I₂ ω₂
Putting the values ,
3 x .75 = .27 x ω₂
ω₂ = 8.33 rad / s
New angular speed = 8.33 rad /s .
A block of mass 8 m can move without friction
on a horizontal table. This block is attached
to another block of mass 34 m by a cord that
passes over a frictionless pulley.
If the masses of the cord and the pulley
are negligible, what is the magnitude of the
acceleration of the descending block?
Answers
Answer:
Let M1 = 8 kg and M2 = 34 kg
F = M a = (M1 + M2) a
F = M2 g the net force accelerating the system
M2 g = (M1 + M2) a
a = M2 / (M1 + M2) g = 34 / (42) g = .81 g = 7.9 m/s^2
Two identical closely spaced circular disks form a parallel- plate capacitor. Transferring 1.5 * 109 electrons from one disk to the other causes the electric field strength between them to be 1.0 * 105 N/C. What are the diameters of the disks
Answers
We have that the Diameter of the disks is mathematically given as
d= 0.01858 m
Diameter LengthQuestion Parameters:
Transferring 1.5 * 109 electrons from one disk to the other electric field strength between them to be 1.0 * 105 N/CGenerally the equation for the Electric field is mathematically given as
\(E=q/eA\\\\Where\\\\A=\pi d^2 / 4\\\\Therefore\\\\ 1.0 * 10e5= \frac{4 * 1.5 * 10e9 * 1.6 * 10 e-19}{(8.85 * 10e-12 * 3.14 * d2 )}\\\\\)
d= 0.01858 m
For more information on Length visit
https://brainly.com/question/8552546
The time required for one complete cycle of a mass oscillating at the end of a spring is 0.40 s. What is the frequency of oscillation?
Answers
Answer:
the frequency of the oscillation is 2.5 Hz.
Explanation:
Given;
time to complete the oscillation, t = 0.4 s
number of oscillations, n = 1
The frequency of the oscillation is calculated as;
\(F = \frac{n}{t} \\\\F = \frac{1}{0.4} \\\\F = 2.5 \ Hz\)
Therefore, the frequency of the oscillation is 2.5 Hz.
the bug has the greater acceleration because it has the smaller massthe windshield has the greater acceleration because it has the greater massthey both have the same magnitude of acceleration
Answers
The bug has a larger acceleration because it has a smaller mass, according to the claim made.
How does acceleration work?acceleration is the rate of change in both speed and the direction of velocity over time. When anything moves faster or slower in a straight line, it is said to have been accelerated.
What does the law of acceleration simply mean?According to Newton's Second Law of Motion, acceleration (gaining speed) occurs whenever a force is acted on a mass (object). Every law of motion is best demonstrated by riding a bicycle. The mass is your bicycle. Your leg muscles are pressing the pedals.
To know more about acceleration visit:
https://brainly.com/question/12550364
#SPJ4
I understand that the question you are looking for is:
Which has the greater acceleration: the bug or the windshield?