the magnitude of the electrostatic force between two identical ions that are separated by a distance of 7.70 nm is 1.557×10-9 n. what is the charge of each ion?

Answer:

It should be 75 seconds

Explanation:

Because if it takes 25 seconds from 0 to 5 just multiply by 3

Computerized axial tomography is a noninvasive roentgenography diagnostic technique.

Tomography can be described as imaging by sections or sectioning that uses any type of penetrating wave. The method is used in biology, radiology, archaeology, geophysics, atmospheric science, oceanography, plasma physics, astrophysics, materials science, quantum information, and other areas of science.

In some cases, the production of images will be based on the mathematical procedure of tomographic reconstruction, such as X-ray computed tomography being produced from projectional radiographs.

Most algorithms come into these two categories: filtered back projection (FBP) and iterative reconstruction (IR). Optical coherence tomography is transmission methods, they do not require movement of the transmitter to need data from different directions.

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The angular velocity of the wheel after 5 seconds will be **15 rad/s**.

To calculate the angular velocity, we first need to determine the torque acting on the wheel. Torque (τ) can be calculated using the formula τ = r × F, where r is the radius and F is the force. In this case, r = 0.20 m and F = 20 N, so τ = 0.20 m × 20 N = 4 Nm. Next, we will use the moment of inertia (I) and torque to find the angular acceleration (α) using the equation τ = I × α. With I = 0.20 kg-m², we have 4 Nm = 0.20 kg-m² × α, resulting in α = 20 rad/s². Finally, we will calculate the angular velocity (ω) after 5 seconds using the equation ω = α × t, where t is the time. Therefore, ω = 20 rad/s² × 5 s = **15 rad/s**.

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The Uniform Circular Motion Interactive is a tool that allows users to explore the physics of uniform circular motion. The user can change the radius of the circle, the speed of the object, and the mass of the object.

When an object moves in a circle at a constant speed, it is said to be in uniform circular motion. The velocity of the object is constantly changing direction, even though the speed is constant. This means that the object is accelerating.

The acceleration of an object in uniform circular motion is directed towards the center of the circle. The magnitude of the acceleration is equal to the square of the speed of the object divided by the radius of the circle.

The net force on an object in uniform circular motion is always directed towards the center of the circle. The magnitude of the net force is equal to the mass of the object times the acceleration of the object.

The Uniform Circular Motion Interactive is a valuable tool for understanding the physics of uniform circular motion. It allows users to explore the effects of changing the radius of the circle, the speed of the object, and the mass of the object on the velocity, acceleration, and net force of the object.

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Answer:

electromagnetic radiation hopefully

Explanation:

chemical changes

>produce new substances w/ different chemical structure/ properties

> thermal energy can be used to BREAK bonds (endothermic)

>thermal energy can be transferred to a chem rxn to help form new products (endothermic)

> heat can be released by an exothermic chemical reaction (excess energy- the total energy used to break bonds is less than energy released in forming new bonds)

physical changes

>does not result in new substances (typically changes in state- solid, liquid, gas)

> thermal energy can be transferred to EVAPORATE water (add thermal E... water (liquid) to steam (gas)) or FREEZE water (remove thermal E... water (liquid) to ice (solid))

Answer:

100 m/s^2

Explanation:

F=ma

50 g = 0.05 kg

5 = 0.05a

a=100m/s^2

Answer:

100MS

Explanation:

I did the test and got 100%

When a DC voltmeter measures a very low voltage at the collector of Fig. 7-31a, some of the possible troubles could include:

1. Damaged or malfunctioning transistor: The transistor might not be amplifying the voltage correctly due to damage or manufacturing defects.

2. Incorrect biasing: If the base-emitter junction is not properly biased, the transistor may not be in its active region, causing a low voltage at the collector.

3. Faulty or incorrect components: Resistors, capacitors, or other components connected to the circuit may be faulty or have incorrect values, affecting the voltage at the collector.

4. Short circuit: A short circuit in the circuit could cause a low voltage at the collector as current bypasses the intended path.

5. Poor connections: Loose or corroded connections can result in low voltage measurements due to increased resistance.

To diagnose the issue, check the components and connections in the circuit, verify the correct biasing of the transistor, and consider replacing the transistor if needed.

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Given flow net below is shown in the attached figure. Given data: Hydraulic conductivity of the soil = 2.0 ft/day; Length of the entire spillway (across the plane of the paper) = 1000 ft.

Estimation of discharge rate (q) per day:Discharge

\(Q = K × A × ∆H/Q = (K × ∆H × L) / (H1 − H2)\)

Where, K = Hydraulic conductivity of soil = 2.0 ft/day, A = Area of flow section, ∆H = Total head loss = H1 − H2, L = Length of flow path Length (L) of the flow path is 1000 ft ∆H = H1 − H2 is the difference between hydraulic head at point A and point B on the flow net.

\(∆H = 2.1 − 1.2 = 0.9\)

ft Area of flow section A = Length of the element × Height of the element Width of the element is equal to width of the flow net W \(= 0.5 in = (0.5/12) ft = 0.042\) ftLength of the element on the flow net is \(10 in = (10/12) ft = 0.833\)ft Height of the element on the flow net is\(0.8 in = (0.8/12) ft = 0.067 ft.\)

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Newton's second law is the hardest to describe as it is about momentum  (F = ma), and a lot of people don't know the concept of momentum.

Newton's first law of motion:- every object moves in a straight line unless acted upon by a force.

Newton's 2nd law of motion:-the acceleration of an object is directly proportional to the net force exerted and inversely proportional to the item's mass. Newton's 2nd law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.

Newton's 3rd law of motion:- For every action, there's an equal and opposite reaction.

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Actually according to physics there should be needed a force to move things but our mind does not produce a force ...Apart from myths ...is seems quite impossible to move a object with ur mind

-Thanks for reading

The following question can be solved using formulas of Motion on one dimension as there is no updrift or downdrift

We will use the formula

\(v^{2}-u^2=2aS\)

where v is the final velocity

u is the initial velocity

a is the acceleration of the boat

s is the distance in meters

u=0 as the initially the boat is at rest

S=12meter

acceleration is 5 m/s^2

\(v^{2}=\)2 x 5 x 12

v^2=120

therefore final velocity is \(\sqrt{120}\)=10.95m/s

Now using the formula v=u+at

v=\(\sqrt{120}\)

\(\sqrt{120}\)=0+5 x t

t= \(\sqrt{ 120\)/5

t = 2.20 seconds

t is the time taken

Hence the boat takes 2.20seconds

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compasses use the magnetic attraction of north to show which direction you are going, putting one near a magnet will mess with the magnetic attraction it has to north making it go the wrong direction

Answer:

Explanation:

At t = 1 velocity = 0

At t = 3 velocity = 3

slope of the line = 3-0 / 3-1 = 3/2

At t = 2

velocity = 3/2 x ( 2 - 1 )

= 1.5 m /s

velocity at t = 2 is 1.5 m /s

Position at t = 2 :

displacement at t = 2

area of graph upto  t = 2

= 1 / 2 x 1 x 1.5 = .75

position at t = 2 :

= initial position + displacement

= 10 + .75 = 10.75 m

position at 6 s :

displacement at t = 6

area of curve upto  t = 6

= 1 / 2 x 2 x 3 +  3 x 3 + 1/2 x 3 x ( 4.5 - 3 )

= 3 + 9 + 2.25

= 14.25 m

position at t = 6

= initial position + displacement

= 10 + 14.25 = 24.25 m

position at 9 s :

displacement at t = 9

area of curve upto  t = 9

= 1 / 2 x 2 x 3 +  4 x 3 + 1/2 x 4 x ( 5 - 3 )- 1/2 x 2 x 1.5

= 3 + 12 + 4 - 1.5

= 17.5  m

position at t = 9

= initial position + displacement

= 10 + 17.5 = 27.5  m

Answer:

The answer is B

Answer:

and the power to which the number should be raised:

1.50E2 = 1500

4.167E4 = 41,760

4.167E-4 = .0004176

Mass of the earth = 5.98 * 10^24 kg = 5.98E24 kg

Some examples of scientific notation

Answer:

hey Army

I'm B.T.S Army

안녕하세요

Answer:

elements

not really an explanation

Answer:

49.06 Newtons

Explanation: Using Newton's Second Law of Physics, F=ma

the mass of the car is 22.3kg and the acceleration of the object is 2.2m/s^2 then you would multiply the two and get 49.06 Newtons. You want the acceleration to be in m/s^2

Answer:

22425 J

Explanation:

From the question,

Applying

Q = cm(t₂-t₁).................. Equation 1

Where Q = Thermal Energy, c = specific heat capacity of aluminium, m = mass of aluminium, t₂ = Final Temperature, t₁ = Initial Temperature.

Given: c = 897 J/kg.K, m = 1.0 kg, t₁ = 50 °C, t₂ = 25 °C (The final temperature is reduced by half)

Substitute these values into equation 1

Q = 897×1×(25-50)

Q = 897×(-25)

Q = -22425 J

Hence the thermal energy lost by the aluminium is 22425 J

The time it takes Jane to catch up with Don if Jane is traveling at 10 k.p.h and don at 6 k.p.h is: 2.5 h

The formula and procedure we will use to solve this problem is:

Tr = x/(v2-v1)

Where:

Information about the problem:

Applying the reach time formula we get:

Tr = x/(v2-v1)

Tr = 10 km/(10 km/h- 6 km/h)

Tr = 10 km/(4 km/h)

Tr = 2.5 h

It is a physical quantity that indicates the displacement of a mobile per unit of time, it is expressed in units of distance per time, for example (miles/h, km/h).

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free lil peezy and drake is kool

Answer:

For constant traveled distance and applied forces, apply the for parallel to the direction of the movement.

Explanation:

\(W = F.d = |F||d|cos(\theta)\\\)

There are 3 components in the amount of work produced when applying a force to an object.

1. The amount of force applied

2. The distance that the object is traveled

3. The angle between the force vector and the distance vector

The converse of the statement "No pilots are mechanics" is No mechanics are pilots.

Hence, the correct option is A.

The converse of a statement switches the subject and the predicate and negates both. In the original statement, the subject is "pilots" and the predicate is "mechanics."

The original statement states that there is no overlap between pilots and mechanics. In the converse statement, the subject becomes "mechanics" and the predicate becomes "pilots," and it still states that there is no overlap between the two groups.

Therefore, The converse of the statement "No pilots are mechanics" is No mechanics are pilots.

Hence, the correct option is A.

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Answer:

308,000 or 30.8×10^3

Explanation:

v=f×lamda

v is ?, f is 875Hz, lamda is 352m

v=875×352

v=308,000

v=30.8×10^3 m/s

Answer:

Push or Pull

Gravity

Strong Nuclear Force

Weak Force

Explanation:

Answer:

3600

Explanation:

90 of 120 is 3/4 so 4800 - 1200 is 3600.

Answer:

:) :::::::::::::::::::::::::::::::))))

The wavelength of waves whose frequency of waves from a radio station is 15 megacycles per second is 20m

Given the frequency of radio waves (f) = 15 megacycles per second

The number of complete wave cycles that pass a location in a unit of time is the definition of frequency. The SI frequency unit is called a Hertz (Hz). A sinusoidal wave's frequency is defined as the total number of full oscillations that every wave constituent performs in a unit of time.

Let the wavelength = ∧

The speed of light waves (v) = 3 x 10^8m/s

We know that frequency = velocity/wavelength

Then f = v/∧ such that ∧ = v/f

∧ = 3 x 10^8/15 x 10^6 = 20m

Hence the wavelength of radio waves = 20m

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