please help, thanks.
2. Calculate the force of repulsion between two plastic spheres placed \( 110 \mathrm{~cm} \) apart. Each sphere has a deficit of \( 1.2 \times 10^{\wedge} 8 \) electrons. \( 2.7 \times 10^{\wedge}-12

I = present t = time One electron has a charge of e = 1.602 1019 C. If the current fed to the screen is constant, the total quantity of charges passing a cross-section will amass on a television in 5.0 seconds.

Electric Power where V = Current difference, R = Resistance, and I = current, electrical power is the rate wherein electric power is converted into other types of energy. 1.136 x 10 18 electrons pass through the electric lightbulb in one second.

2.25 1022 electrons would travel via the wire, to give the operative response. (b) Disburse the cathode and anode products employing Ag electrodes to electrolyze an AgNO₃ solution.

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Answer:

As a rule sound travels slowest through gases, faster through liquids, and fastest through solids. The speed of light as it travels through air and space is much faster than that of sound; it travels at 300 million meters per second or 273,400 miles per hour. ... Speed of light in glass = 200 million m/s or 182,300 mph.

Explanation:

Almost always sound travels slowest via gases, faster via beverages, and fastest via solids. The velocity of light because it travels via air and area is a great deal quicker than that of sound; it travels at 300 million meters consistent with 2d or 273,400 miles in step with hour.

The pace of light in glass = 2 hundred million m/s or 182, 300 mph.

Mild waves are electromagnetic waves whilst sound waves are mechanical waves. Mild waves are transverse even as sound waves are longitudinal. Light waves can tour in a vacuum. Sound waves require a material medium to journey, and as a result, can not travel in a vacuum.

Nothing can travel faster than light except for sound. This is the declaration of a few US physicists, who say they've designed an unusual waveguide to make the sound move at “superluminal” speeds (Appl. Phys.

In 2015, a team of Scottish scientists announced that they had found a way to gradual the rate of mild. By sending photons via a unique mask, the researchers altered their shape. In this malformed kingdom, these infinitesimal particles of light traveled slower than normal photons.

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Answer:

3 amps

Explanation:

easily

Answer:

system

Explanation:

they are all put together as one, and they are a group

Answer:

Is this a research paper?

Answer:

Fracturing can emit seismic waves through the ground.

Explanation:

I believe the answer is seismic, I've studied this before.

The New York Longitudinal Study (NYLS) suggested four categories of temperament based on their observations of infants and children. These categories are:

Easy: Infants in this category are adaptable, have regular routines for eating and sleeping, and are generally in a positive mood. They tend to be low in intensity and react mildly to new situations.

Difficult: Infants in this category are often fussy, irregular in their routines, and have difficulty adapting to new situations. They tend to react negatively to change and are high in intensity.

Slow-to-warm-up: Infants in this category are cautious and shy in new situations. They tend to withdraw or react mildly to new people or environments, but eventually warm up and become more comfortable.

Mixed: Infants in this category do not fit neatly into any of the other categories and display a mix of temperamental traits.

These categories were used to help identify the early signs of developmental disorders, as well as to inform parenting and educational strategies for children with different temperamental styles.

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According to the question, the concentration of phosphate ion (PO₄³⁻) in the solution is approximately 4.02 × 10⁻³ M.

To determine the concentration of phosphate ion (PO₄³⁻) in the solution, we need to use the solubility product expression for the equilibrium between solid lead phosphate (Pb₃(PO₄)²) and the phosphate ion.

The balanced chemical equation for the equilibrium is:

Pb₃(PO₄)₂ (s) ⇌ 3Pb2+ (aq) + 2PO₄³⁻ (aq)

The solubility product expression for this equilibrium is: Ksp = [Pb²⁺]³ [PO₄³⁻]²

Given that the solution contains 1.39 × 10⁻² M potassium iodide (KI), we can assume that the concentration of iodide ion (I-) is also 1.39 × 10⁻²M.

Since lead iodide (PbI²) is not mentioned to be in equilibrium, we can assume it is in excess and that the concentration of lead ion (Pb²⁺) comes solely from the solid lead phosphate. Since the concentration of lead ion is three times the concentration of phosphate ion, we can write: [Pb²⁺] = 3[PO₄³⁻]

Substituting these values into the solubility product expression, we have:

Ksp = (3[PO₄³⁻])³ [PO₄³⁻]²

Simplifying the equation, we get: Ksp = 27[PO₄³⁻]⁵

Now we can solve for [PO₄³⁻]: [PO₄³⁻] = (Ksp/27)^(1/5)

Substituting the given value for Ksp (solubility product constant for lead phosphate), we can calculate the concentration of phosphate ion:

[PO₄³⁻] = (Ksp/27)^(1/5)

[PO₄³⁻] = (1.39 × 10⁻²) M / 27)^(1/5)

Calculating this expression, we find: [PO₄³⁻] ≈ 4.02 × 10⁻³ M

Therefore, the concentration of phosphate ion (PO₄³⁻) in the solution is approximately 4.02 × 10⁻³ M.

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Answer:

The International Mineralogical Association (IMA) currently recognizes 5,327 distinct mineral species. Some, such as the major rock-forming silicates and carbonates, are well known and found in abundance the world over. But most are documented based on just a few known occurrences

The measured value for mass is 22.87 g +/- 0.418.

The center value with uncertainty format is used to write a measurement with correct rounding. When an experiment to find the value of mass yields that the highest reasonable mass (HRM) is 22.45 g .

the lowest reasonable mass (LRM) is 23.28 g, the center value with uncertainty format that can be written for the measurement with correct rounding is: 22.87 +/- 0.415 g.

How to find the center value?

The center value is the average of the HRM and LRM. Therefore,

Center value = (HRM + LRM) / 2

= (22.45 + 23.28) / 2

= 22.865 g

To find uncertainty,Subtract the center value from the HRM or LRM and divide the result by 2. Since the difference between HRM and LRM is 0.83 g (23.28 – 22.45), the uncertainty would be:

Uncertainty = (HRM – Center value) / 2

= (23.28 – 22.865) / 2

= 0.415 g

Therefore, the center value with uncertainty format that can be written for the measurement with correct rounding is 22.87 +/- 0.415 g.

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In order to determine the density of a cylinder, we need to know its mass and volume. The mass of the cylinder is given as 29.2 grams, but the volume is not provided. Without the volume, it is impossible to calculate the density of the cylinder.

As for whether or not the cylinder will float in water, that also depends on its density. If the density of the cylinder is less than the density of water (1), then it will float. However, without knowing the density of the cylinder, it is impossible to determine whether or not it will float in water.

Answer:

They generate electricity by contact.

Explanation:

The observation presented by the question above shows an example of electricity generated by the contact, which can also be called triboelectrification. This type of electricity is created when two objects made of different materials come into contact with each other, and that contact is interrupted soon afterwards, as occurs when someone, wearing woolen socks, walks over the carpet.

For triboelectrification to occur, it is necessary that at least one of the objects involved is electrically charged. This object, when in contact with another object, will transfer electrons carrying the neutral object, until the two objects have the same electrical potential. When interrupting the contact between the objects, the two are left with equal loads of energy.

Answer:

D. 1×10⁻⁸ M

Explanation:

[H⁺] [OH⁻] = 10⁻¹⁴

(1×10⁻⁶) [OH⁻] = 10⁻¹⁴

[OH⁻] = 1×10⁻⁸

The concentration of hydroxyl ion will be  \(10^{-8}\)M.

The amount of a chemical substance in a mixture is expressed by the substance's concentration.

Calculation of concentration.

Given data:

Concentration of H+ =  1 x \(10^{-6}\) M.

It is known that,

[\(H^{+}\)][\(OH^{-}\)] = \(10^{-14}\)M

Now, put the value of concentration of [\(H^{+}\)] in above equation.

[1× \(10^{-6}\)][\(OH^{-}\)] =  \(10^{-14}\)M

[\(OH^{-}\)]  =   \(10^{-14}\) / [1× \(10^{-6}\)]M

[\(OH^{-}\)]  = \(10^{-8}\)M

Therefore, the concentration of hydroxyl ion will be  \(10^{-8}\)M.

Hence, the correct answer will be an option (D).

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An algorithm that calculates the time a train needs to arrive at a destination given speed and distance \(Time=\frac{Distance}{Speed}\).

The amount of the shift in approach per unit of time or the size of the displacement over time for an object can be used to describe speed, which would be a scalar quantity in everyday language and kinematics.

The maximum speed that can be maintained when a period grows closer to zero is the starting speed.

By dividing the object's distance traveled by the duration of the interval, the mean pace of the object for the given period is calculated. Speed and velocity are not always the same thing.

The algorithm to calculate the time required will be,

Let the distance covered by the train is D and the speed of the train be S.

Then, the time taken by the train will be,

T = D/S

Here, D is the distance and S is the speed.

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Answer:

Hey buddy, here is your answer.Hope it helps you.

Explanation:

A catapult is a launching device that allows us to experimentally observe projectile motion. Once the ball is launched, the only forces acting are gravity and air resistance.

Answer:

It is (A) Calculate the force needed to stop the vehicle.

Explanation:

Explanation

Step 1

free body diagram

so, for m1

m1= 10 kg

so,

and for m2

Step 2

now, replace in equaiotn (1) and solve for a

finally, replace in equation (2) to find Tension

I hope this helps you

Radiation transfers energy by moving matter is false.

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Answer:

Within the realm of Newtonian mechanics, an internal frame of reference or internal reference frame, is one in which newton's law of motions is valid

The minimum frequency of light required to eject electrons from a silver surface can be determined using the work function. In this case, with a work function of 4.73 eV, the minimum frequency in Hz is approximately 1.14 x 10^15 Hz (option e).

The work function represents the minimum amount of energy required to remove an electron from the surface of a material. The relationship between energy (E), frequency (ν), and Planck's constant (h) is given by the equation E = hν. To find the minimum frequency, we need to convert the work function from electron volts (eV) to joules (J). The conversion factor is 1 eV = 1.6 x 10^(-19) J.

So, the work function in joules (Wo) is calculated as Wo = 4.73 eV x 1.6 x 10^(-19) J/eV.

Next, we can rearrange the equation E = hν to solve for the frequency ν: ν = E / h. Plugging in the value of the work function in joules, and the value of Planck's constant (h = 6.63 x 10^(-34) J·s), we can calculate the minimum frequency. The result is approximately 1.14 x 10^15 Hz, which corresponds to option e.

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ADC is an acronym that stands for analog-to-digital converter.

An ADC is an electronic device that transforms analog signals into digital signals, which are required for digital processing.

The signal voltages range from −1 V to 1 V, and the instrument needs to measure voltage changes of 0.01 V in order for the instrument to measure the analyte of interest adequately. Let's figure out whether a 10-bit ADC would be adequate or not.

Let's see! Calculation, We can use the following formula to calculate the resolution of the ADC:

Resolution = (Vref)/(2^n-1).

Where, n is the number of bits, and Vref is the reference voltage.

Let's assume a 10-bit ADC and see if it meets the requirement.

Resolution = Vref/ (2^10 - 1)

We know that the range of voltage is from −1 V to 1 V.

Therefore, the reference voltage will be equal to 2 V.

So,Resolution = 2 / (2^10 - 1)= 0.00195 V, which is not enough. As a result, a 10-bit ADC would not be adequate.

So we need to choose a bit number for an ADC that would be adequate.

A 12-bit ADC will be adequate since its resolution will be:Resolution = Vref/(2^n-1) = 2/(2^12-1) = 0.00097 V, which is less than 0.01 V. Thus, a 12-bit ADC will be adequate.

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Answer:

the force is very strong between

Answer:

The first answer is in the picture

b. The box will move foward

PLEASE MARK BRAINLIEST

Answer:

acceleration = 0.013 m/s²

Explanation:

formula for acceleration is

a = (v-u) / t

a= (0.7-0.3) / 30

= 0.013

The acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

Acceleration is defined as the change in velocity of a body with respect to time. Mathematically:

\(a=\frac{v-u}{t}\)

v is the final speed = 0.7m/s

u is the initial speed = 0.3m/s

t is the time taken = 30seconds

Substitute the given values into the formula:

\(a=\frac{0.7-0.3}{30}\\a=\frac{0.4}{30}\\a = 0.0133m/s^2\)

Hence the acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²

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You will need to add a 50.0 μF capacitor to the 75.0 μF capacitor to get a total capacitance of 25.0 μF.

A capacitor is an electronic component that is used to store electrical energy in an electric field. It is made up of two plates that are separated by an insulating material called a dielectric. When a voltage is applied across the plates, an electric field is created, which causes the plates to store electric charge. The amount of charge stored is proportional to the applied voltage. Capacitors are used in many different applications, such as signal filtering, voltage stabilization, and energy storage. They are also used in power supplies, as they can store energy during peak demand and release it when needed. Capacitors are found in a wide range of products, including televisions, computers, and mobile phones.

To produce a total capacitance of 25.0 μF, you would need to add a 50.0 μF capacitor in parallel with the 75.0 μF capacitor. This is because capacitance in parallel is additive, so the total capacitance will be equal to the sum of the individual capacitances. Therefore, you will need to add a 50.0 μF capacitor to the 75.0 μF capacitor to get a total capacitance of 25.0 μF.

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By Using Euler's method with two steps, we can find the approximate value of Y(2) is 2.125. , where Y is the solution of the initial value problem dy/dx = x - y, and Y(1) = 3.

Euler's method is defined as a numerical technique which is  used to approximate solutions into ordinary differential equations. The method includes dividing the interval of interest into smaller steps and thereafter approximating the solution at each step by using the derivative of the function.

In this case, we are given the initial value problem dy/dx = x - y, with the initial condition Y(1) = 3. To approximate Y(2) using Euler's method with two steps, we will divide the interval [1, 2] into two equal steps.

Step 1:

We start with the initial condition Y(1) = 3. Using the differential equation dy/dx = x - y, we can approximate the value of Y at the midpoint of the interval [1, 2].

Using the step size h = (2 - 1) / 2 = 0.5, we can calculate Y(1.5) as follows:

Y(1.5) ≈ Y(1) + h × (x - y) = 3 + 0.5 × (1.5 - 3) = 3 + 0.5 × (-1.5) = 2.25

Step 2:

Now, using the value of Y(1.5) as the new approximation, we calculate Y(2) using the same process:

Y(2) ≈ Y(1.5) + h × (x - y) = 2.25 + 0.5 × (2 - 2.25) = 2.25 + 0.5 × (-0.25) = 2.125

Thus,  by using Euler's method with two steps, the approximate value of Y(2) is 2.125.

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The complete question is

Use Euler's Method With Two Steps To Approximate Y(2), Where Y Is The Solution Of The Initial Value Problem: Dy : X − Y, Y(1) = 3

Answer:

Physical science

Explanation:

work done by gravitational force = mass × g × height

= mgh

= 5 × 10 × 8 N