Object A has a charge of −3μC and a mass of 0. 0025kg. Object B has a charge and a mass of +1μC and 0. 02 kg respectively. What is the magnitude of the electric force between the two objects when they are 0. 30meters away?


(30 points)

The spring constant is 4900N/m

We are given that,

The mass of the ceiling = m = 0.75kg

The total length of the spring = x = 0.65cm - 0.50cm = 0.15cm

Therefore , to get the value of the spring constant (k) by applying Hook's law that can be given as,

F = kx

Where, F is the total force on the spring , k is the spring constant and x is the length of the spring.

Since , to get the F i.e. force of the spring by Newton's second law of motion, for mass m and acceleration due to gravity is g i.e. 9.8m/s²

F = mg

F = 0.75kg × 9.8m/s²

F = 7.35 N

Then, the spring constant is given as,

k = F/x

k = (7.35N)/(0.0015m)

k = 4900N/m

Therefore, the spring constant may be given as 4900N/m

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Answer:

6

Explanation:

120/30=6

Answer: solar power converters

Answer:

Outlets besides a battery

Answer:

It keeps particles that make up protons and neutrons together.

Explanation:

Nuclear force is a short range of force which means it will act at short range of distance like fermi order distance.

This shows the order of radius of the nuclei which means all the neutrons and protons which resides into the nucleus will exert the nuclear force on each other and this nuclear force is of large magnitude compare to electrostatic force or gravitation force between them.

While if the distance is more than the fermi order distance then the nuclear force totally disappears so it will not exist for large distances.

so here the correct answer must be

It keeps particles that make up protons and neutrons together.

Answer: 15 kg*m/s

Explanation:

Momentum = mass*velocity

Momentum = 3kg*5 m/s

Momentum = 15 kg*m/s

Answer:

15 kg m/s

Explanation:

Momentum = mass xvelocity

Momentum = 3kgx 5 m/s

Momentum = 15 kg m/s

The dimension of maximum height is M.

The dimension of time of flight is T.

The dimension of range of projectile is M.

The maximum height reached by a projectile is the highest vertical height attained by the projectile.

H = u² sin²θ / 2g

where;

The unit of maximum height is meters, so the dimension will be  M.

The time of flight of a projectile is the total time spent in air by a projectile.

T = 2usinθ / g

The unit of time of flight is seconds, and the dimension will be T.

The range of a projectile is given as;

R = u² sin(2θ) / g

The unit of range of a projectile is meters and the dimension is M.

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The cyclist can decelerate at a rate of 4.86 in/s^2 without tipping about the front wheel, and if tipping occurs at this rate, the minimum coefficient of static friction required to prevent slipping is 0.651.

The key to solving this problem is understanding the concept of the center of mass and its relationship with the tipping point of the bicycle. The center of mass is the point where the mass of the rider and bicycle are concentrated. In this case, it is located at point G.
To determine the rate at which the cyclist can decelerate without tipping about the front wheel, we need to calculate the maximum deceleration rate that will keep the center of mass within the base of support. The base of support is the area between the two wheels that keeps the bicycle stable. We can use the formula a = g * sin(θ) * (μ_s - k), where a is the maximum deceleration rate, g is the acceleration due to gravity, θ is the incline angle, μ_s is the coefficient of static friction, and k is the radius of gyration. Plugging in the values, we get a = 4.86 in/s^2.
If tipping occurs at this rate of deceleration, we can use the formula μ_s = (h - d) / r, where h is the height of the center of mass above the ground, d is the distance between the front wheel and the center of mass, and r is the radius of the front wheel. Plugging in the values, we get μ_s = 0.651.

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The energy of the characteristic x-ray emitted from a tungsten target 1.36*10³ eV.

The energy of a characteristic x-ray emitted from a tungsten target when an electron drops from an M shell (n=3 state) to a vacancy in the K shell (n=1 state) can be estimated using the equation E =hcZ²Δn²/n². Here Z is the atomic number for tungsten (Z=74) and Δn is the difference between n1, the initial orbital, and n2, the final orbital, (n1 - n2). In this case n1= 3 and n2= 1 giving (3-1=2).

Using the equation E =(hc*74²*2²)/1² = (6.63*10-34*.993*17576)/1= 1.36*10³ eV. Therefore, the estimated energy of the characteristic x-ray emitted from the tungsten target when an electron drops from the M shell (n=3) to a vacancy in the K shell (n=1) is approximately 1.36*10³ eV.

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Explanation:

this might help you i think so

Answer:

230 °C in °F is 446 °F

Calculations show that 230 °C is equal to 446 °F. Temperatures in Celsius (°C) can be converted to Fahrenheit (°F) using this formula: °F = (°C * 9/5) + 32.

We convert °C to °F by dividing the temperature in degrees Celsius by 1.8 and adding 32, one degree Celsius is equal to 33.8 degrees Fahrenheit.

To convert temperature from Celsius (°C) to Fahrenheit (°F), use formula given below:

°F = (°C * 9/5) + 32

Temperature of 230 °C is assumed.

°F = (230 * 9/5) + 32

So, °F = 446 °F

Therefore, 230 °C is equivalent to 446 °F.

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Answer:

will be doubled

Explanation:

This is because when a dielectric material is inserted between the plates of capacitors the capacitance increases to

c = ke Co .

where ke is called the dielectric constant and Co is the capacitance without a dielectric material

The force involved is F₁.₅=-25.2KN when the car hit a wall and goes from a speed of 27m/s

A force is an influence in physics that can modify the velocity of an object. A force can modify the velocity of a mass item. A force is a vector quantity since it has both magnitude and direction. It is measured in newtons, the SI unit of mass (N). The sign F represents force.

In its original form, Newton's second law states that the net force acting on an object equals the rate at which its momentum varies with time.

We know that,

Force=ma

F=ma

F=m((v-u)/t)

Given, t=1.5 second

Velocity v=0m/s at stand still

And mass m=1400kg

Speed u=27m/s

F₁.₅=1400((0-27m/s)/1.5)

F₁.₅=-25.2KN

Therefore, the force involved is F₁.₅=-25.2KN

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Answer:

We often use the world's 'mass'and 'weight' interchangeable,but they mean quite different things.Your mass is the same no matter where you go in the universe;your weight,on the other hand,changes from place to place.

Explanation:

hope it helps

Answer:

materials: solid dissolved in a liquid

independent variable: temperature

Explanation:

I got it right

Answer: When a bullet is fired from a gun, the gun gives off a force on the bullet in the forward direction. The force is called the action force. The bullet also gives an equal and opposite force on the gun in the backward direction. That's why when bullets fire out, the force from the bullet also creates a force back.

Answer:

I think B but I could be wrong

Explanation:

With reference from the graph, the order in which the blocks are dropped onto the disk is shown a s: C, B, A.

A  graph can be described as as a pictorial representation or a diagram that represents data or values in an organized manner.

The graph is a graph of Angular speed of the disk vs time graph

From the graph,   the disk is initially spinning at a constant angular speed of ω0ω0.

Then, as blocks are deposited onto the disk, the graph displays three separate times where the angular speed changes.

The order in which the blocks are dropped onto the disk can be inferred from the graph: Block C is first dropped at location P1 on the disk and here  the angular speed of the disk begins to decrease.

Block B is then dropped onto the disk, at point P2 which  causes the angular speed of the disk to decrease much further.

Block A is dropped onto the disk last, at point P3 causing  the angular speed of the disk to decrease even further until it eventually reaches a constant value.

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The letter(s) typically used to represent energy density is "U" or "u". Energy density is a measure of the amount of energy stored in a given volume or mass of a substance. It is commonly used in the fields of physics and engineering to describe the amount of energy that can be stored in various materials or systems.

The symbol "U" or "u" is often used to represent energy density in equations and formulas, with the units of energy per unit volume or mass. For example, the energy density of a battery can be expressed in units of joules per cubic meter or watt-hours per kilogram, depending on the specific application.

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Answer:

u would need to calculate both K. E and P. E

Explanation:

for K. E use = (mv^2)/2

for P. E use = m×g×h ;

where g is acceleration due to gravity and it's value is 10m/s^2

nts have an uncertainty of 0.1 ohms each, we can calculate the following:

(a) Calculate the resistance R when R1 and R2 are wired in parallel:

Using the formula 1/R = 1/R1 + 1/R2, we can substitute the given values:

1/R = 1/7 + 1/10

(b) Calculate the percent uncertainty in R1:

Percent uncertainty in R1 = (Uncertainty in R1 / R1) * 100

Percent uncertainty in R1 = (0.1 ohms / 7 ohms) * 100

(c) Calculate the percent uncertainty in R2:

Percent uncertainty in R2 = (Uncertainty in R2 / R2) * 100

Percent uncertainty in R2 = (0.1 ohms / 10 ohms) * 100

(d) Calculate the percent uncertainty in R:

To calculate the percent uncertainty in R, we need to consider the uncertainties in R1 and R2:

Percent uncertainty in R = (Percent uncertainty in R1 + Percent uncertainty in R2)

You can substitute the given values into the equations to calculate the desired values.

Note: The uncertainty in R is calculated by combining the uncertainties in R1 and R2. Since the formula for parallel resistance is an addition of terms, the percent uncertainties in R1 and R2 can simply be added.

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Answer:

Let the initial charges be q1 and q2 respectively.

After they come in contact, the charges are rearranged such that they acquire same charge.

let us say that charge on each of them is Q.

They are again brought apart at a distance of 0.9 m. Hence, the force between them will be given as

F = kQ2 / r2

0.025 = (9×109 x Q2) / 0.92

Q2 = 0.025 x 0.92 / 9×109

Q = 1.5 x 10-6 C

Explanation:

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Texture: The texture of a substance can differ with a physical change.

Color: The changing of color of a substance is not necessarily an indicator of a chemical change.

ANSWER:

(a) 108 J

(b) 0 J

(c) 108 J

STEP-BY-STEP EXPLANATION:

(a)

Express the relation between horizontal component of work done and force on the crate:

Here Wh is the horizontal component of the work done on the crate and Fh is the horizontal component of force and d is the distance of the crate across the floor.

Replacing:

(b)

Express the relation between vertical component of work done and force on the crate:

Here Wv is the vertical component of the work done on the crate and Fv is the vertical component of force and d is the distance of the crate across the floor.

Replacing:

(c)

Express the relation for total work done by the 45 N force:

Answer:

It will take 9 hours

Explanation:

If a car travels 100 km per hour and 900 km is divided by 100 it will take 9 hours to travel.

Answer:

The Kidneys

Explanation:

The Kidneys remove the toxic stuff that you dont need anymore. Therefore the kidneys rather than the everything else removes blood and toxic waste.

The car has a constant acceleration of 1.95m/s2 and reaches a top speed of 41.0m/s. The boat has a constant acceleration of 6.50m/s2 .

When it comes to mechanics, acceleration refers to how quickly an object's velocity changes over time. Acceleration is a vector quantity (in that they have magnitude and direction). The direction of the net force acting on an item determines its acceleration.

According to Newton's Second Law, an object's acceleration is a sum of two factors:

The size of the net balance of all external forces acting on that thing is directly proportional to the net resultant force; the magnitude of the object's mass, depending on the materials from which it was created, is inversely related to the mass.

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The electric field will never equal zero between two oppositely charged particles because the electric field from each charge points is in opposite direction in between the charges.

An electric field in physics is a region of space around a charged particle, or between two voltages, which exerts a force on charged objects in its vicinity.

For opposite charges, the point of zero electric fields will lie outside the system along the line joining the two charges.

Therefore, the electric field will never equal zero between two oppositely charged particles because the electric field from each charge points is in opposite direction in between the charges.

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Answer:

Yes, you are pulling on Earth. Reasoning. Third Newton's law of motion, action and reaction law, sates that for every action force, there is an equal (in magnitude) and opposite reaction force.

Explanation:

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