two light conducting balls each of mass 10 milligrams are suspended by silk threads 1 meter long from a common point, when equal charges are given to the balls, they repel each other to a distance of 20 cm. find out the charges on each ball.​

Answer:

A resistor of 160 ohms should be used to replace the current resistor

Explanation:

Applying,

Ohm's Law

V = IR................... Equation 1

Where V = Voltage of the battery, I = current, R = Resistance

From the question,

Given: I = 0.2 A, R = 120 ohms.

Substitute these values into equation 1

V = 0.2×120

V = 24 V

IF a current of 0.15 A is required,

make R the subject of equation 1

R = V/I............... Equation 2

Given: V = 24 V, I = 0.15 A

Substitute these values into equation 2

R = 24/0.15

R = 160 ohms.

Hence a resistor of 160 ohms should be used to replace the current resistor

Answer:

Explanation:

1). Distance traveled during the first minute (A-B)

    = Distance from A to C + Distance from C to D + Distance from D to B

    = 40 + 100 + 40

    = 180 m

   Option (4) will be the answer.

2). Displacement after first minute (A-B)

    = Distance from A to B

    = 180 m East

    Option (2) is the answer.

3). Distance traveled during the first 2 minutes (A - B - C)

    = Distance from A to B + Distance from B to C

    = 180 + 140

    = 320 m

    Option (3) will be the answer.

4). Displacement after first 2 minutes (A-B-C)

    = Distance between A and C

    = 40 m towards east

    Option (1) is the answer.

5). Distance traveled during 3 minutes (A-B-C-D)

    = Distance between A to B + Distance between B to C + Distance between C to D

    = 180 + 140 + 100

    = 420 m

   Option (4) is the answer.

6). Displacement after total 3 minutes (A-B-C-D)

    = Distance between A and D

    = Distance between A to C + distance between C to D

    = 40 + 100

    = 140 m

     And the direction is towards East.

     Option (3) is the answer.

The possible reason for zero light being detected through the eyepiece when observing a fluorescent-dyed sample under a microscope could be the absence of excitation light.

Fluorescence microscopy relies on the principle of fluorescence, where a sample absorbs light at a specific wavelength and emits light at a longer wavelength. To observe fluorescence, two key components are required: excitation light and emission light.

The excitation light, typically provided by a specific wavelength of light such as ultraviolet or blue, is used to excite the fluorophores in the sample. These fluorophores then emit light at a longer wavelength, known as the emission light, which is detected by the microscope's eyepiece or camera.

In the given scenario, if there is zero light being detected through the eyepiece, it suggests that there might be no excitation light reaching the sample. This could occur due to several reasons. One possibility is that the light source for excitation is not turned on or not properly aligned with the sample. Another reason could be a malfunctioning excitation light source, such as a bulb or laser.

Additionally, if the fluorescent dye used in the sample requires a specific wavelength of excitation light and the microscope's light source does not emit light at that particular wavelength, it would result in no excitation and consequently no fluorescence.

To troubleshoot this issue, one should ensure that the excitation light source is properly functioning and aligned with the sample. Checking the light source settings, replacing bulbs if necessary, and adjusting the microscope's configuration to match the required excitation wavelength are crucial steps to consider.

Learn more about microscope

brainly.com/question/1869322

#SPJ11

The speed of the truck is approximately 8.42 m/s. The horizontal force exerted on the truck is approximately 157.64 N.

(a) The work-energy principle relates the work done on an object to its change in kinetic energy. Since the truck starts from rest, the work done on it equals its final kinetic energy:

W = \((1/2)mv^2\)

Solving for v, we get:

v = \(sqrt(2W/m) = sqrt(2(4,335 J)/(2.80 x 10^3 kg)) ≈ 8.42 m/s\)

Therefore, the speed of the truck is approximately 8.42 m/s.

(b) The horizontal force exerted on the truck can be found using the formula for work:

W = Fx

where F is the force exerted on the truck and x is the distance over which the force is applied. Rearranging this equation, we get:

F = W/x = (4,335 J)/(27.5 m) ≈ 157.64 N

Therefore, the horizontal force exerted on the truck is approximately 157.64 N.

To know more about horizontal force, visit:

https://brainly.com/question/10564289#

#SPJ11

Unintentional injuries caused by accidents are the number one killer of children and teenagers.

What causes the majority of adolescent deaths?

A little over half of all adolescent fatalities are caused by accidents. Over one-third of all fatal accidents fall under the category of motor vehicle fatalities, which is the top cause of death for teens. Non-Hispanic black male teens have the highest death rate.

The top causes of mortality for children under 5 years old continue to be congenital anomalies, pre-term birth complications, birth asphyxia, and other infectious diseases like pneumonia, diarrhea, and malaria. According to a recent study, homicide is the top cause of death for children in the United States, and the total rate has grown by 4.3% annually on average.

To learn more about mortality  use :

https://brainly.com/question/14645933

#SPJ1

Answer:

Explanation:

Newton's Second Law Lab. 10/12/2012

Analysis of Error: Some sources of error that could have affected the acceleration are un-precise tools,friction, air resistance, air coming from the air conditioner, and mass of the string. These factors were not taken into consideration and could have affected the acceleration.

The main answer to your question is that sea level has risen significantly over the past 20,000 years.

This is due to a combination of factors including the melting of glaciers and ice sheets, thermal expansion of seawater, and changes in ocean currents.

The explanation for this rise in sea level is that during the last glacial maximum, which occurred around 20,000 years ago, much of the world's water was locked up in ice sheets.

As these ice sheets melted, water was released into the oceans, causing sea levels to rise.

The statement that best describes the change in sea level during the past 20,000 years is that sea levels have risen significantly, mainly because of the melting of ice sheets and glaciers and thermal expansion of the oceans.

The summary of this is that the past 20,000 years has seen a significant rise in sea level due to melting ice sheets and thermal expansion.

Learn more about sea level click here:

https://brainly.com/question/2092614

#SPJ11

In a voltage ladder, the voltage is divided equally among each resistor in the series circuit, and the current remains constant throughout the circuit. The power dissipated in each resistor can be calculated using the formula P = \(I^{2}\) * R, and the total power delivered by the voltage source can be calculated using the formula P = V * I.

What is Voltage?

Voltage, also known as electric potential difference, is a measure of the amount of electric potential energy that is transferred per unit charge between two points in an electrical circuit. It is often represented by the symbol V and is measured in volts (V).

Node a: \(12_v\)

Node b: \(8_v\)

Node c: \(4_v\)

Node d:\(2_v\)

Node e: \(0_v\)

Current i: 2mA (same throughout the ladder due to series connection)

This is a series circuit with resistors of equal value, so the voltage is divided equally among each resistor. The voltage at each node is the voltage drop across the resistors up to that node, relative to the ground reference at node e. The current i is the same throughout the circuit due to the series connection.

To know more about Voltage visit;

https://brainly.com/question/24858512

#SPJ4

Answer:

Educational institutions can influence what psychological perspectives are taught, studied, and researched. Take, for example, behaviorism. Before the cognitive perspective re-emerged, behaviorism was the dominant perspective being taught in most universities. Personal ideology can also affect which perspective a psychologist supports, the course of research a psychologist undertakes, and also a psychologist's perception and interpretation of research findings. For example, during the dominance of behaviorism, psychologists were discouraged from studying cognitive processes. As a result, much of the research conducted had a behaviorist slant to it.

Explanation:

Answer:

yes it is true

Explanation:

In general, the mean age is expected to be close to the median, assuming a roughly symmetrical distribution. However, if the distribution is skewed (meaning that there are more values on one side of the median than the other), the mean may be pulled away from the median towards the more extreme values.

For example, if there are many older individuals in a population but only a few younger ones, the mean age may be higher than the median age. On the other hand, if there are many younger individuals and only a few older ones, the mean age may be lower than the median age.

It is important to note that the relationship between the mean and median can provide insight into the shape of the distribution, but it is not always a definitive indicator.

To know more about symmetrical distribution visit:-

https://brainly.com/question/31184447

#SPJ11

1. You would look for the youngest stars in the Milky Way Galaxy is in A. the disk of the galaxy. 2. Our galaxy consists of a large, nearly flat with a central, all surrounded by a vast halo 3. As gravity shrunk the protogalactic cloud that gave birth to our galaxy, the first region to take shape was A. the halo

Stars are born when massive clouds of gas and dust in space collapse under their own gravity. In our galaxy, the disk is where most of the star formation occurs because it contains large amounts of gas and dust. These materials can be found in the spiral arms of the disk. The youngest stars are typically found in the outer regions of the arms. The disk is where most of the star formation occurs and contains large amounts of gas and dust. The central bulge is a dense, star-filled region at the center of the disk.

The halo is a spherical region that surrounds the disk and bulge. It contains old stars, globular clusters, and dark matter. The halo is a spherical region that surrounds the disk and bulge of our galaxy. It contains old stars, globular clusters, and dark matter. The halo was the first structure to form as the cloud collapsed under its own gravity. As the collapse continued, the disk and bulge also formed, with the disk being the location of most of the star formation in the galaxy.

So therefore the youngest stars in the Milky Way Galaxy are located in A.  the disk of the galaxy and our galaxy consists of a large, nearly flat with a central, all surrounded by a vast halo, as gravity shrunk the protogalactic cloud that gave birth to our galaxy, the first region to take shape was A. the halo

Learn more about globular clusters at :

https://brainly.com/question/31661960

#SPJ11

Option (a). “Where would you look for the youngest stars in the Milky Way Galaxy?” is “in the disk.”

The Milky Way is a spiral galaxy that is part of the Local Group of galaxies. It is approximately 100,000 light-years across, and the Sun is situated about halfway between the center and the outer edge of the disk.

The youngest stars in the Milky Way Galaxy can be found in the disk of the galaxy. The disk is a flat, rotating structure that contains most of the galaxy's interstellar gas and dust. This gas and dust are the raw materials from which new stars form.

2. Option (a), “Our galaxy consists of a large, nearly flat with a central, all surrounded by a vast” is “halo.”

The Milky Way is a barred spiral galaxy that is made up of a central bulge, a flat disk, and a surrounding halo. The central bulge contains a high concentration of stars and is surrounded by a nearly flat disk of gas, dust, and stars. The disk is where most of the galaxy's interstellar gas and dust are located, and it is also where most of the star formation takes place. The halo, on the other hand, is a roughly spherical structure that surrounds the disk. It contains a lower density of stars and is mainly made up of dark matter.

3. “As gravity shrunk the protogalactic cloud that gave birth to our galaxy, the first region to take shape was _____” is “the halo.”

According to current models of galaxy formation, the Milky Way Galaxy formed from a large cloud of gas and dust that collapsed under its own gravity. As the cloud shrank, it began to spin, and the material in the center became denser and hotter. Eventually, the core of the cloud became hot enough for nuclear fusion to occur, and the first stars in the galaxy were born. The first region of the galaxy to take shape was the halo, a roughly spherical structure that surrounds the disk. The halo is mainly made up of dark matter and contains a lower density of stars than the disk.

Learn more about Milky Way Galaxy: https://brainly.com/question/30714548

#SPJ11

Answer:

Answer:

Debt payments to income ratio = 22.74%

Explanation:

Debts payment to Income ratio is calculated as follows:

= \frac{Total\ debt\ payment}{Total\ Income}

Total Income

Total debt payment

We have total debts payment = auto loan payment 685 + student loan payment685+studentloanpayment375 + credit card payment 125 =125=1,185

Total Income = $5,210

Note: Credit card is also a kind of debt as firstly all the expenses are met during the period and then the payment is made at the end of the period, therefore, there is a loan in the period. Therefore, it will be considered for payment of debt.

Debt payments to income ratio = \frac{1,185}{5,210} = 22.74

5,210

1,185

=22.74

That means the debts are 22.74% of income.

Cory's displacement vector has a magnitude of 4.62 km, which is the closest to the 4.6 km value.

The length of the arrow is a symbol for the displacement vector's magnitude, which represents the distance between the locations. The arrow's direction corresponds to the displacement vector's direction.

d = 3 m + 5 m + 6 m = 14 m is the total distance travelled. Visualizing the walking makes it possible to determine the displacement's size. The real distance between A and B is 3 metres, followed by 5 metres from B to D and 6 metres from D to E. |S| =√92+52 = 10.29 m.

To know more about displacement visit:-

https://brainly.com/question/30087445

#SPJ1

The true statement of the magnitudes of tensions T₁, T2, and T3 in the

ropes in the diagram shown is the sum of the y-components of T₁ and

T₂ is equal to 20 N.

Option C is correct.

Tension is described as the pulling force transmitted axially by the means of a string, a rope, chain, or similar object, or by each end of a rod, truss member, or similar three-dimensional object.

Tension might also be described as the action-reaction pair of forces acting at each end of said elements.

We know that the block remains in equilibrium, so the forces must balance themselves in each direction at all points.

Consider the forces acting at the intersection of the three strings.

Here T3 =W=20N

The forces at the point must balance in vertical direction.

Therefore T3= Sum of y-components of T1 and T2 =20N

Learn more about tension at: https://brainly.com/question/24994188

#SPJ1

Answer:

Temperature is also a condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly.

Answer:

7.07 s

69.3 m/s

Explanation:

Taking the negative direction to be down and the positive direction to be up:

We have 3 variables in the y-direction and can solve for time.

Use this kinematics equation to solve for time.

It will take the ball 7.07 s to reach the ground.

We can solve for final velocity using the same variables in the y-direction:

Use this kinematics equation to solve for final velocity.

The ball will be traveling at a speed of 69.3 m/s at the instant before it reaches the ground.

Answer:

strengthens ur muscles

Answer:

often Positive and negative charges balance each other which gives an overall neutral charge. if they are unbalanced then it will result in static electricity.

Friction is a force that is applied to a moving object. it causes the object to slow down or stop because it acts in the opposite direction of motion.

Friction opposes the motion. A force that prevents two materials from moving in relation to one another is  friction.

When one object, fluid, or material is moved in relation to another, it produces this force, which always acts in the opposite direction of the motion. Some actions require friction, yet others are hindered by it.

Following are the three types of friction

Example include:

putting on the brakes to make an automobile go slower. Wheel rotors are subjected to pressure from brake pads. This pressure causes friction, which turns the car's kinetic energy into heat.

To look more about friction click here

brainly.com/question/28356847

#SPJ4

A race car is moving at a constant speed around a track. The race car is changing its velocity as the direction of motion changes.

The primary indicator of an object's position and speed is its velocity. It is the distance that an object travels in one unit of time. The displacement of the item in one unit of time is the definition of velocity.

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

As the race car is moving at a constant speed around a track, the magnitude of velocity remains same but during race it may changes its direction of motion, that is why, velocity of it, which depends on both magnitude and direction, may changes.

Learn more about velocity here:

https://brainly.com/question/18084516

#SPJ2

The angle that the refracted ray in the air makes with the normal is 36.37° or approximately 21.64°.

Explanation:-

When a ray of light traveling in the liquid has an angle of incidence of 34.0 ° at the interface with respect to the normal, the angle that the refracted ray in the air makes with the normal is 21.64°.

Explanation:

Given,

Angle of incidence of light ray in liquid, i = 34.0°

Speed of light in the liquid, v1 = 2.00 × 10⁸ m/s

Speed of light in air, v2 = 3.00 × 10⁸ m/s

Let the angle that the refracted ray in air makes with the normal be r.

Applying Snell's law of refraction, we have,

`n₁sin i = n₂sin r`

Where `n₁` and `n₂` are the refractive indices of the liquid and air respectively.

Therefore,

`sin r = (n₁ / n₂) × sin i`

We know that,

`n = c / v`

where `c` is the speed of light in vacuum, and `v` is the speed of light in the medium.

Substituting the values of speed of light in liquid and air, we get,

`n₁ = c / v1 = (3 × 10⁸) / (2 × 10⁸) = 1.5``n₂ = c / v2 = (3 × 10⁸) / (3 × 10⁸) = 1`

Hence,

`sin r = (n₁ / n₂) × sin i``sin r = 1.5 × sin 34.0°``sin r = 0.809`

Therefore,

`r = sin⁻¹ 0.809``r = 53.63°`

The angle that the refracted ray in the air makes with the normal = (90° - r)`= (90° - 53.63°)`= 36.37°

Therefore, the angle that the refracted ray in the air makes with the normal is 36.37° or approximately 21.64°.

Know more about Snell's law of refraction here,

https://brainly.com/question/32364688

#SPJ11

Answer:

37500 J

Explanation:

Law of conservation of energy: Its states that energy can neither be created nor destroyed but it can be transformed from one form to another.

Applying the law of conservation of energy.

The change in kinetic energy for the truck  =  Net work done by the truck skids

ΔK.E = F×d.................... Equation 1

Where ΔK.E = Change in kinetic energy, F = Force, d = distant.

Given: F = 1500 N, d = 25 m

Substitute these values into equation 1

ΔK.E = 1500×25

ΔK.E = 37500 J

Answer:

hope it helps for you

Explanation:

A machine is an object or mechanical device that receives an input amount of work and transfers the energy to an output amount of work. For an ideal machine, the input work and output work are always the same. The six common simple machines are the lever, wheel and axle, pulley, inclined plane, wedge, and screw.

The set of quantum numbers allowed for the third d-electron is n=3, l=2, ml=-1, and ms=-1/2.

Electronic configuration is one of the important aspects of chemistry. Every electron in the atoms has a set of four quantum numbers to represent their unique positions in the atom.

The four quantum numbers are the principle quantum number, azimuthal quantum number, magnetic quantum number, and spin quantum number. Here, we are going to find the allowed set of quantum numbers for the third d electron given the two d-electron configurations.

The first d-electron has quantum numbers n=3, l=2, ml=-2, and ms=+1/2. The second d-electron has quantum numbers n=3, l=2, ml=1, and ms=+1/2. The quantum numbers (n, l, ml, and ms) for the third electron depend on the Pauli exclusion principle, Hund’s rule of maximum multiplicity, and aufbau principle.

According to Pauli's exclusion principle, two electrons in an atom cannot have the same set of four quantum numbers. The Hund’s rule of maximum multiplicity states that electrons tend to fill empty orbitals with their spins parallel to each other.

According to the aufbau principle, electrons tend to fill the lowest-energy orbitals available before occupying higher-energy orbitals. Hence, the allowed set of quantum numbers for the third d-electron is n=3, l=2, ml=-1, and ms=-1/2 because this set of quantum numbers satisfies all the principles above.

Therefore, the set of quantum numbers allowed for the third d-electron is n=3, l=2, ml=-1, and ms=-1/2.

Learn more about quantum numbers from the given link

https://brainly.com/question/2292596

#SPJ11

Statement that is true about chemical reaction that forms acid rain : b)The bonds that break are between N and O in HNO2and between O and H in HNO3.

Acid rain is a acid deposition, which refers to the many ways in which acidity can move from atmosphere to Earth's surface. Acid deposition includes acidic rain as well as other forms of acidic wet deposition such as snow, sleet, hail, and fog.

HNO2 is less stable thus dissociates easily to HNO3 + NO + H2O and HNO3 is a strong acid. Therefore, when they react with H2O, they form acid rain.

To know more about acid rain, refer

https://brainly.com/question/22143130

#SPJ1

Note: The question given on the portal is incomplete. Here is the complete question.

Question: Which two statements are true about this chemical reaction that forms acid rain? 2NO2 + H2O--> HNO2 +HNO3

a) The bonds that form are between N and O in HNO2 between and between O and H in HNO3.

b)The bonds that break are between N and O in HNO2and between O and H in HNO3.

c)The bonds that break are between N and O in NO2 and between O and H in H2O.

d)The bonds that form are between N and O in NO2 and between O and H in H2O.

Answer:  The correct two answers are  :  

1.)  The BONDS that FORM are between N and O in HNO  2   and between O and H in HNO 3

2.)  The BONDS that BREAK are between N and O in NO2 and between H and O in H2O

Explanation:   I took the test.

Answer:

d = 1.65 m

Explanation:

Given that,

The speed of a ball, v = 3 m/s

A ball rolls a level table that is 1.5 m above the floor.

We can find how long the ball is in free fall. We can use the second equation of kinematics as follows :

\(s=ut+\dfrac{1}{2}gt^2\)

u is the initial speed in the vertical direction

So,

\(s=\dfrac{1}{2}gt^2\\\\t=\sqrt{\dfrac{2s}{g}} \\\\t=\sqrt{\dfrac{2\times 1.5}{9.8}} \\\\t=0.55\ s\)

Now, using the formula of velocity.

\(v=\dfrac{d}{t}\\\\d=vt\\\\d=3\times 0.55\\\\d=1.65\ m\)

So, the landing spot is at 1.65 m from the table.

With an increase in gas volume, the gas's temperature must also rise. Temperature and volume changes result in work and an internal energy shift.

Boiling water into steam or freezing water into ice are two examples of isobaric processes. A gas either expands or contracts during the process to maintain constant pressure, and as a result, the net work done by the system or on the system is determined.

An adiabatic process where no heat is added to or removed from the system. an isobaric process, in which there is no change in the pressure of the system. the system's volume remains constant throughout an isochoric process.

To know more about Isobaric visit:

https://brainly.com/question/14752966

#SPJ4

The given problem can be solved using the following free-body diagram:

The diagram is the free-body diagram for the pulley that is holding the weight. Where:

Now we add the forces in the vertical direction:

Adding like terms:

Now, since the velocity is constant this means that the acceleration is zero and therefore the sum of forces is zero:

Now we solve for "T" by adding "mg" from both sides:

Now we divide both sides by 2:

Now we substitute the values and we get:

Solving the operations:

Now we use the free body diagram for the second pulley:

Now we add the forces in the vertical direction:

The forces add up to zero because the velocity is constant and the acceleration is zero:

Solving for the force:

Therefore, the pulling force is equal to the tension we determined previously and therefore is: