A metal sphere with an excess of 11 electrons touches an identical metal sphere with an excess of 15 electrons. After the spheres touch, find the number of excess electrons on the second sphere.

The force F1 is equal and opposite to the downward force thus, F1 is equal to 60 N. The force F2 is inclined to 30 ° from leftward force and it is equal to 38.97 N in magnitude.

Force is an external agent acting on a body to deform it or to change its state of motion or rest. Force is a vector quantity and it is characterised by its magnitude and direction.

If two forces acting on a body from the same directions, then the net force will be the sum of these two forces. If they are acting from opposite directions, they will cancel each other in magnitude.

The force F1 is equal and opposite to the force acting downward. Thus its magnitude is 60 N. The force F2 is inclined to 30 ° from horizontal direction.

F2 = 45 cos 30 = 38.9 N.

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The pivot should be placed 1.31 m from the left end of the board to balance the seesaw when you sit on the left end and your friend sits on the right end, taking into account the mass of the board.

T1 = 90 kg * g * (x - 1.5 m)

T2 = 60 kg * g * (1.5 m - x).

T3 = Mg * (L/2 - x)

In the equilibrium position, we set the sum of the torques equal to zero:

T1 + T2 + T3 = 0

90 kg * g * (x - 1.5 m) + 60 kg * g * (1.5 m - x) + Mg * (L/2 - x) = 0

Simplifying and solving for x, we get:

x = (45 kg * L + 1.5 m * (90 kg - 60 kg)) / (M + 150 kg)

Substituting the values given in the problem, with M = 29 kg, we get:

x = (45 kg * 3.0 m + 1.5 m * 30 kg) / (29 kg + 150 kg)

x = 1.31 m

Torque is a measure of the force that causes an object to rotate around an axis or pivot point. It is often described as the rotational equivalent of force. The amount of torque an object experiences is dependent on both the magnitude and direction of the applied force, as well as the distance between the axis of rotation and the point where the force is applied.

The formula for torque is τ = r × F, where τ is the torque, r is the distance between the axis of rotation and the point of force application, and F is the magnitude of the applied force. Torque is typically measured in units of Newton meters (Nm) or pound-feet (lb-ft). Torque is an important concept in many areas of physics, including mechanics, engineering, and robotics. It plays a critical role in the operation of machines and engines, as well as in the movement and control of vehicles and aircraft.

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The SI unit of charge is the coulomb (C). It is related to the fundamental unit of charge, which is the charge of an electron or proton. The magnitude of the charge of an electron is equal to -1.602 x 10^-19 C, while the magnitude of the charge of a proton is equal to +1.602 x 10^-19 C.

This means that an electron has a negative charge and a proton has a positive charge. The charge of an object is determined by the number of electrons and protons it has. If an object has an equal number of electrons and protons, it is said to be neutral and has a charge of zero.

The charge of an object can be measured using an instrument called an electrometer. Conductors, such as metals, have a high degree of conductivity and can easily transfer charge. In contrast, insulators have a low degree of conductivity and do not easily transfer charge.

The SI unit of conductance is the siemens (S), which is the reciprocal of resistance (ohms). The conductance of a material is determined by its ability to allow the flow of electric current. The concentration of charged particles in a material can affect its conductivity. For example, increasing the concentration of ions in an electrolyte solution can increase its conductivity.

Answer:Know the answer yet?

Explanation:

I suggest that the students move forward with option A.

Test funnels of the same size and material with varying sized openings. This will allow them to determine the optimal size for the opening that will help direct the marble to the launch pad. Once they have determined the optimal size, they can move forward with constructing the funnel with that size opening.

C. Each gender has differing attraction cues and priorities.

Men and women exhibit different preferences in mate selection because both have different attraction cues and priorities for their partner. These cues and priorities leads to difference in preference of life partner.

So we can conclude that Each gender has differing attraction cues and priorities.

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Answer:

The resistance that would produce a current of 400 amperes from a socket putting out 2,000 volts is 5 ohms, calculated using the formula R = V/I, where V = 2,000 volts and I = 400 amperes.

Explanation:

So, a resistance of 5 ohm would result in a current of 400 amps from a 2,000 volt plug.

The opposition that a substance provides to the flow of electric current is referred to as resistance. The capital letter R represents it. The ohm is the standard unit of resistance, which is often written as a word and occasionally represented by the capital Greek letter omega. Resistance is a measure of an electrical circuit's resistance to current flow. Resistance is measured in ohms, which is represented by the Greek letter omega (ohm). A conductor's resistance is defined as the ratio of potential difference across its end to current flowing through it. It is measured in ohms (omega).

Here,

The resistance can be calculated using Ohm's law: R = V / I, where V is voltage, I is current, and R is resistance.

R = 2000V / 400A = 5Ω

So, a resistance of 5Ω would produce a current of 400 amperes from a socket putting out 2,000 volts.

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If you move the screen only, you will not see any interference pattern on the screen. The interference pattern is created by the diffraction of light through the two slits. When the screen is moved, the distance between the slits and the screen changes, and the interference pattern disappears.

To tell if you are seeing the single slit or the double slit pattern, you can look at the interference pattern on the screen. If you are seeing a pattern of bright and dark fringes on the screen, you are seeing the double slit pattern.

This pattern is characteristic of wave interference and is produced when the light passes through two closely spaced slits. On the other hand, if you do not see any interference pattern on the screen, you are seeing the single slit pattern. This pattern is characteristic of wave diffraction and is produced when the light passes through a single slit.  

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Answer:

C. A glass of lemonade starting to freeze in a warm room.

Explanation:

This is because there is no source of cold to properly freeze the lemonade, freezing happens when a cold source starts to slow down the movement of atoms. So if there's nothing there to freeze it, it can't freeze.

Alternatively, there are some materials that harden when not subjected to heat, but that's not freezing. It's just cooling.

The gas is compressed to 1/7 of its original volume, but since the process is horizontal, there is no change in volume. Hence, no work is done during the process A to B.

Therefore, the work done (WAB) during the process A to B is zero.

The work done by or on the gas during the process A - B can be calculated using the following formula: WAB = -∫PdV where P = pressure, and V = volume. To calculate WAB, we need to calculate the integral of PdV. Since B is represented by a horizontal line, the pressure P is constant. Therefore, WAB = -P∫dVWhere, ∫dV is the integral of dV from the initial volume Vi to the final volume Vf.

The gas is compressed from state A to state B. Therefore, the initial volume Vi = 7.0 dm³ and the final volume Vf = 1/7 * 7.0 dm³ = 1.0 dm³.WAB = -P ∫dV = -P(Vf - Vi)WAB = -200 kPa (1.0 dm³ - 7.0 dm³) = 1200 JThe work done by the gas during the process A - B is -1200 J.

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Answer:

Relative to Carlos the Whataburger is moving at 0 speed.

Explanation:

Carlos speed, \(V_A\) = 35 m/s

speed of another car, \(V_B\) = -25 m/s

The speed of the Whataburger, \(V_w\)  = 35 m/s since it is in the same car as Carlos.

The relative of the Whataburger to Carlos is given as;

\(V = V_A - W_w\\\\V = 35 \ m/s - 35 \ m/s\\V = 0\)

Therefore, Relative to Carlos the Whataburger is moving at 0 speed.

Answer:

X-linked is a trait where a gene is located on the X chromosome. Humans and other mammals have two sex chromosomes, the X and the Y. In an X-linked or sex linked disease, it is usually males that are affected because they have a single copy of the X chromosome that carries the mutation.

Answer:

–735.17 N

The negative sign indicate that the force is acting in opposition direction to the car.

Explanation:

The following data were obtained from the question:

Mass (m) of car = 782.10 kg

Initial velocity (u) = 7.60 m/s

Final velocity (v) = 3.61 m/s

Time (t) = 4.23 s

Force (F) =?

Next, we shall determine the acceleration of the car. This can be obtained as follow:

Initial velocity (u) = 7.60 m/s

Final velocity (v) = 3.61 m/s

Time (t) = 4.23 s

Acceleration (a) =?

a = (v – u) / t

a = (3.61 – 7.60) / 4.23

a = –3.99 / 4.23

a = –0.94 m/s²

Finally, we shall determine the force experienced by the car as shown below:

Mass (m) of car = 782.10 kg

Acceleration (a) = –0.94 m/s²

Force (F) =?

F = ma

F = 782.10 × –0.94

F = –735.17 N

The negative sign indicate that the force is acting in opposition direction to the car.

Answer:

when a two bodies A and B are moving at an angle 180° with each other then the relative velocity is the sum of bodies the velocity .i.e,

when the bodies move the opposite direction

then their relative velocity is the sum of individual velocities.

The time constant is 0.974 sec when measured with the multimeter for the resistance of the 100 mh inductors.

The product of the circuit resistance and the circuit capacitance determines the RC time constant, often known as tau, the time constant (in seconds) of an RC circuit. It is the amount of time needed to charge a capacitor through a resistor from zero starting charge voltage to roughly 63.2% of the applied DC voltage or to discharge a capacitor to roughly 36.8% of its initial charge voltage through the same resistor.

An inductor is a passive electronic component that, when an electric current passes through its coil, momentarily stores energy in a magnetic field.

calculations:

Observed resistance = 102.6Ω

DC resistance R = 102.6Ω

                         L = 100mH

Time constant ρ = L/R

                             = 100/102.6

                             =0.974 sec.

Hence, the time constant is 0.974 sec when measured with the multimeter for the resistance of the 100 mh inductors.

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Answer:

16.64 km/h

Explanation:

Think of the x and y components as the a and b sides of a triangle and simply do the Pythagorean Theorem:

\(a^2+b^2=c^2\)

\(14^2+9^2=c^2\)

\(\sqrt{196+81}=c\)

\(\sqrt{277}=c\)

\(16.64 km/h\)

To calculate the wavelength of a radar signal with a frequency of 43 GHz, we can use the formula:

wavelength = speed of light / frequency

Given that the speed of light is approximately 3 × 10^8 m/s and the frequency is 43 GHz (which is equivalent to 43 × 10^9 Hz), we can substitute these values into the formula:

wavelength = (3 × 10^8 m/s) / (43 × 10^9 Hz)

Simplifying the expression:

wavelength = 7 × 10^-3 meters

Therefore, the wavelength of the radar signal is approximately 7 × 10^-3 meters or 0.007 meters.

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It is important to use a semicircular dish instead of a rectangular dish when measuring the refraction index because a semicircular dish provides a consistent and smooth curved surface for light to pass through.

This curved surface enables more accurate measurement of the angle of incidence and the angle of refraction, leading to a more precise calculation of the refraction index. Using a rectangular dish might result in inconsistent measurements due to the straight edges and sharp corners, which can affect the path of light and thus, the accuracy of the refraction index calculation. Refractive Index (Index of Refraction) is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density. The refractive index variable is most commonly symbolized by the letter n or n' in descriptive text and mathematical equations.

So, It is important to use a semicircular dish instead of a rectangular dish when measuring the refraction index.

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Answer: Which of the following is NOT required to maintain healthy soil?

Maintaining soil water levels

Maintaining aeration

Maintaining organic matter content

Maintaining diverse microbial communities

ANSWER: A

To maintain healthy soil we need not to maintaining soil water levels.

When a soil performs its range of ecological tasks in an adequate manner for its surroundings, it is said to be in good health. In more everyday language, the health of soil results from the harmonious interactions of all soil constituents, such as bacteria, plants, and animals. Aggregates in healthy soil help it stick together and resist runoff and erosion. Plants survive better in droughts because it can hold more water. It has more bacteria and fungi, which aid plants in warding against pests and disease.

To maintain healthy soil we need not to maintaining soil water levels.

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From low to high frequency, a wave's wavelength increases while its frequency decreases: 0.8 km, 5 m, 7 cm, 3 m, 460 nm, and 0.02 nm. The characteristic of a wave is known as its wavelength.

A wave's wavelength is the characteristic that determines how far identical locations between two succeeding waves are separated. The Greek letter lambda () is used to represent it. Thus, the wavelength is defined as the separation between one wave's crest or trough and the following wave.

The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency.

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Answer:

\(V_{B/A}=2i+2k\)

Explanation:

The relative velocity can be calculated by means of the difference between vector B minus vector A.

\(V_{A}=i+2j-3k\\V_{B}=3i+2j-k\\V_{B}-V_{A}=(3-1)i + (2-2)j+(-1-(-3))k\\V_{B/A}=2i+2k\)

Answer:

30mL FAX

Explanation:

Explanation:

Remember

  V = IR       which is    V/I = R      120 v / .5 A = 240 Ω

At the bottom of the journey, the passengers will be travelling at a speed of approximately 39.2 m/s.

Acceleration is the rate of change of an object's velocity over time. It is a vector quantity, meaning it has both magnitude and direction. Acceleration is usually denoted by the letter a in equations. It is the second derivative of position with respect to time, or the rate of change of velocity. Acceleration describes how quickly an object's speed changes with time. Acceleration can involve either an increase or decrease in speed, and it can involve either a change in direction or no change in direction.

This is because the velocity of a free falling object is equal to the square root of two times the acceleration of gravity times the height from which the object is dropped.
In this case, the height is 33.5 m, and the acceleration of gravity is 9.8 m/s2.
Therefore, the velocity at the bottom of the journey is equal to the square root of two times 9.8 m/s2 times 33.5 m, which is equal to 39.2 m/s.

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Answer:

Explanation:

The gravitational potential energy of a body can be found by using the formula

GPE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

From the question we have

GPE = 10 × 9.8 × 5 = 590

We have the final answer as

Hope this helps you

The splitting of a heavy nucleus to form two or more lighter ones is called nuclear fission.

This process is usually initiated by bombarding the heavy nucleus with a neutron, causing it to become unstable and split into two or more smaller nuclei. The energy released during this process is immense and can be harnessed for various applications, including nuclear power generation and nuclear weapons.

The two smaller nuclei produced in nuclear fission typically have an excess of neutrons and are therefore unstable themselves. This means that they may undergo further nuclear reactions, including fission or fusion, leading to a chain reaction. The control of such reactions is essential for their safe and effective use.

The process involves the heating of water to produce steam, which drives a turbine to generate electricity. Despite its potential benefits, the use of nuclear fission has raised concerns about safety, waste disposal, and the potential for accidents or malicious use.

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The splitting of a heavy nucleus to form two or more lighter ones is called nuclear fission.

This process is usually initiated by bombarding the heavy nucleus with a neutron, causing it to become unstable and split into two or more smaller nuclei. The energy released during this process is immense and can be harnessed for various applications, including nuclear power generation and nuclear weapons.

The two smaller nuclei produced in nuclear fission typically have an excess of neutrons and are therefore unstable themselves. This means that they may undergo further nuclear reactions, including fission or fusion, leading to a chain reaction. The control of such reactions is essential for their safe and effective use.

The process involves the heating of water to produce steam, which drives a turbine to generate electricity. Despite its potential benefits, the use of nuclear fission has raised concerns about safety, waste disposal, and the potential for accidents or malicious use.

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