How does the electric potential energy between two negatively charged
particles change if one particle's charge is reduced by a factor of 3?

Answer:

a) the velocity increases then decreases.

Answer:

true

Explanation:

normally -No system has ever performed well with one object.

A system must contain more than one object is a true statement.

A system is a group of interacting or interrelated objects that act according to a set of rules to form a unified whole.

Normally, no system has ever performed well with one object.

To learn more about System here

https://brainly.com/question/24893867

#SPJ2

Answer:

increases

Explanation:

when the mass of an object is constant and you add more force, acceleration increases

Answer:

roughly 8-10 hours for the average human being

Explanation:

Answer:

a model would be very benaficial to a scientest because they need them

Explanation:

1 model for eachscientest

Answer:

Light travels as a wave. But unlike sound waves or water waves, it does not need any matter or material to carry its energy along. This means that light can travel through a vacuum—a completely airless space. It speeds through the vacuum of space at 186,400 miles (300,000 km) per second.

Explanation:

Hope this helps :))

In order to find the current needed, we can use the formula below:

Where I is the current (in Ampere), V is the voltage (in Volts) and R is the resistance (in ohms)

So, using V = 120 V and R = 958 ohms, we have:

Therefore the current needed is 0.1253 Amperes.

At height h, on the left side of a loop, a stone is let free from its resting position. h = v^2/(2 x g) + r must the stone be at in order to stay on the track at the top of the loop.

For a stone to not fall off the track at the top of a loop, it must be traveling fast enough to follow the track's curvature. This means that the stone must have a certain minimum speed at the top of the loop in order to complete it from resting position. The minimum speed required for the stone to complete the loop can be calculated using the equation v = sqrt(gr), where v is the minimum speed, g is the acceleration due to gravity, and r is the radius of the loop. Therefore, the minimum height h for which the stone will not fall off the track at the top of the loop can be calculated using the equation h = v^2/(2*g) + r, where h is the minimum height, v is the minimum speed, g is the acceleration due to gravity, and r is the radius of the loop.

To know more about position please refer: https://brainly.com/question/9573597

#SPJ4

The magnitude of the resultant vector to round the answer to the nearest tenth, we look at the digit in the hundredth's place. If this digit is 5 or greater, we round up. If it is less than 5, we round down.

In the study of physics, we use vectors to represent quantities that have both direction and magnitude. It is often the case that we want to add two or more vectors together to obtain a single vector that represents the net result of these additions. The process of adding two or more vectors together is known as vector addition.The magnitude of the resultant vector is the length of the line that represents it on a scale drawing.

When we add two or more vectors together, the resultant vector is the vector that represents the net result of these additions. To find the magnitude of the resultant vector, we use the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

In the case of vector addition, the hypotenuse is the resultant vector, and the other two sides are the component vectors. If we have two vectors a and b, the magnitude of the resultant vector is given by the following equation:|R| = √(ax2 + bx2)where R is the resultant vector, a and b are the component vectors, and x is the angle between the vectors.

For example, if the answer is 12.345, we would round it to 12.3.

for more questions on resultant vector

https://brainly.com/question/110151

#SPJ8

Given,

The focal length, f=10 cm

The distance of the object, u=20 cm

From the mirror formula,

Where v is the image distance.

On substituting the known values,

Thus,

The magnification is given by,

On substituting the known values,

Thus the image produced is inverted.

Thus the given statement is false.

The average speed of the baseball is  option  a. 40 m/s .

To calculate the average speed of the baseball, we use the formula:

Average Speed = Distance / Time

Given:

Distance = 18.4 m

Time = 0.46 s

Plugging in the values, we have:

Average Speed = 18.4 m / 0.46 s = 40 m/s

Therefore, the average speed of the baseball is 40 m/s.

Option a, 40 m/s, is the correct answer. This means that the baseball traveled an average distance of 40 meters per second from the pitcher's mound to home plate.

Average speed is a scalar quantity that represents the total distance traveled divided by the total time taken. It gives us an idea of how fast an object is moving on average over a given distance.

In this case, the baseball covered a distance of 18.4 meters in a time of 0.46 seconds. Dividing the distance by the time gives us the average speed of 40 m/s.

It's important to note that average speed is a measure of the overall rate of motion and does not provide information about the direction of motion. Therefore, negative values such as option b (-40 m/s) or extremely small values such as option c (0.03 m/s) are not appropriate in this context.

Option d (8.5 m/s) is also incorrect as it does not match the calculated average speed of 40 m/s.

Therefore, the correct answer is option a, 40 m/s, as it accurately represents the average speed of the baseball.

Know more about  average speed    here:

https://brainly.com/question/4931057

#SPJ8

Answer:

The third approach to cross-cultural studies of personality is the combined approach, which serves as a bridge between Western and indigenous psychology as a way of understanding both universal and cultural variations in personality

Explanation:

Answer:

The third approach to cross-cultural studies of personality is the combined approach, which serves as a bridge between Western and indigenous psychology as a way of understanding both universal and cultural variations in personality

Answer:

115.05 Volts

Explanation:

We can use Ohm's Law!

V=IR

V= 1.77 * 65

V=115.05 Volts

Given that the internal energy change is -20KJ the change in enthalpy is : -17 KJ

Given data :

P1 = 7 kPa

P2 = 4 kPa

V1 = 3 m³

V2 = 6 m³

Applying the relationship below

Change in enthalpy = change in internal energy + ( P2V2 - P1V1 )

                                 = -20 + ( 4*6 - 7*3 )

                                 = -20 + ( 24 - 21 )

                                 = - 17 KJ

Hence we can conclude that the change in enthalpy is : -17 KJ

Learn more about enthalpy : https://brainly.com/question/24795637

The statement that describes the transformation of the graph of function f onto the graph of function g is: The graph shifts 2 units right and 7 units down.

To determine the transformation of the graph of function f onto the graph of function g, we compare the two functions f(x) and g(x) and observe the changes in the equations.

The function f(x) = (1/x - 3) + 1 represents a reciprocal function that is shifted vertically 1 unit up and horizontally 3 units to the right. The reciprocal function is reflected about the line y = x.

The function g(x) = (1/(1 + 4)) + 3 simplifies to g(x) = 4 + 3 = 7, which is a constant function representing a horizontal line at y = 7.

By comparing the equations, we can see that the transformation from f(x) to g(x) involves the following changes:

The term 1/x in f(x) is replaced by the constant 1/(1 + 4) in g(x), resulting in a vertical shift of 7 units up.

The term -3 in f(x) is replaced by 3 in g(x), resulting in a vertical shift of 3 units up.

The +1 in f(x) is replaced by +3 in g(x), resulting in an additional vertical shift of 2 units up.

Therefore, the overall transformation is a shift of 2 units to the right and 7 units down.

Hence, the correct statement is: The graph shifts 2 units right and 7 units down.

For more such questions on graph, click on:

https://brainly.com/question/26865

#SPJ8

The overall energy of the biker at the midpoint of the hill is 12,702.5 joules (J).

To determine the overall energy of the biker, we need to consider both the kinetic energy and potential energy at the midpoint of the hill.

1. Kinetic Energy:

The kinetic energy (KE) of an object is given by the formula:

KE = 1/2 * mass * velocity^2

Substituting the values:

Mass (m) = 55 kg

Velocity (v) = 13 m/s

KE = 1/2 * 55 kg * (13 m/s)^2

KE = 1/2 * 55 kg * 169 m^2/s^2

KE = 1/2 * 55 kg * 169 m^2/s^2

KE = 1/2 * 9235 kg·m^2/s^2

KE = 4617.5 J

2. Potential Energy:

The potential energy (PE) of an object is given by the formula:

PE = mass * gravitational acceleration * height

Substituting the values:

Mass (m) = 55 kg

Gravitational acceleration (g) = 9.8 m/s^2

Height (h) = 15 m

PE = 55 kg * 9.8 m/s^2 * 15 m

PE = 8085 J

3. Overall Energy:

The overall energy (E) is the sum of the kinetic energy and potential energy:

E = KE + PE

E = 4617.5 J + 8085 J

E = 12702.5 J

For more such questions on biker,click on

https://brainly.com/question/28666728

#SPJ8  

Answer: I am so sorry i hadn't learned this Yet~!

Explanation:

Answer:62

Explanation:

The weight of the sled is 77 N. The force by the hill on the sled is equal to its weight that is 77 N. Then the tension force exerted by the rope on the sled is being 77N sin θ, where θ be the angle of inclination.

Force is an external agent acting on an object to change its motion or to deform it. There are various kinds of force like magnetic force, tension force, frictional force, gravitational force etc.

The weight that an object experience on earth is due to the gravitational force. The force that is exerted by a rope on an object is tension force since it is pulling from a side.

The normal force by the hill on the sled is equal to its weight that is 77 N. The tension force on the sled by the rope is dependent on the angle of inclination θ. If know the angle we can find T by the equation:

T = 77 sin θ.

Find more on tension force:

https://brainly.com/question/29124835

#SPJ5

Answer:

C

Explanation:

Kinetic energy is the energy of motion. It has the most potential energy at the top but the most kinetic at the bottom after it's accelerated fully down the slope.

Hi there! :)

Reference the diagram below for clarification.

1.

We must begin by knowing the following rules for resistors in series and parallel.

In series:
\(R_T = R_1 + R_2 + ... + R_n\)

In parallel:
\(\frac{1}{R_T} = \frac{1}{R_1} + \frac{1}{R_2} + ... + \frac{1}{R_n}\)

We can begin solving for the equivalent resistance of the two resistors in parallel using the parallel rules.

\(\frac{1}{R_{T, parallel}} = \frac{1}{10} + \frac{1}{10}\\\\\frac{1}{R_{T, parallel}} = \frac{2}{10} = \frac{1}{5}\\\\R_{T, parallel} = 5\Omega\)

Now that we have reduced the parallel resistors to a 'single' resistor, we can add their equivalent resistance with the other resistor in parallel (15 Ohm) using series rules:
\(R_T = 15 + 5\\\\\boxed{R_T = 20 \Omega}\)

2.

We can use Ohm's law to solve for the current in the circuit.

\(i = \frac{V}{R_T}\\\\i = \frac{120}{20} = \boxed{6 A}\)

3.

For resistors in series, both resistors receive the SAME current.

Therefore, the 15Ω resistor receives 6A, and the parallel COMBO (not each individual resistor, but the 5Ω equivalent when combined) receives 6A.

In this instance, since both of the resistors in parallel are equal, the current is SPLIT EQUALLY between the two. (Current in parallel ADDS UP). Therefore, an even split between 2 resistors of 6 A is 3A for each 10Ω resistor.

4.

Since the 15.0 Ω resistor receives 6A, we can use Ohm's Law to solve for voltage.

\(V = iR\\\\V = (6)(15) = \boxed{90 V}\)

Answer:

The reading of the scale during the acceleration is 446.94 N

Explanation:

Given;

the reading of the scale when the elevator is at rest = your weight, w = 600 N

downward acceleration the elevator, a = 2.5 m/s²

The reading of the scale can be found by applying Newton's second law of motion;

the reading of the scale  = net force acting on your body

R = mg + m(-a)

The negative sign indicates downward acceleration

R = m(g - a)

where;

R is the reading of the scale which is your apparent weight

m is the mass of your body

g is acceleration due to gravity, = 9.8 m/s²

m = w/g

m = 600 / 9.8

m = 61.225 kg

The reading of the scale is now calculated as;

R = m(g-a)

R = 61.225(9.8 - 2.5)

R = 446.94 N

Therefore, the reading of the scale during the acceleration is 446.94 N

Answer:

It burns easily & It produces a lot of energy

Explanation:

Coal burns easily and thus is ideal for use in a power plant.  

• To generate electric power in the United States, the main fuel used is coal.  

• It is used as it is burned easily and thus producing enormous amount of energy.  

• In the power plants, the lignite, bituminous coal, or subbituminous coal is burned.  

• The heat generated by the burning of the coal is used to transform water into high pressure steam that mediates a turbine, which generates electricity.  

• About 23 percent of the electricity in the United States is produced by the burning of coal.  

Thus, the correct answer is that coal burns easily.

To know more about:

https://brainly.com/question/3715778

Answer:

the weight of the air in pound-force (lb-f) is 325.8 lbf

Explanation:

Given;

dimension of the room, = 15 ft by 15 ft by 20 ft

density of air in the room, ρ = 0.0724 lbm/ft³

The volume of air in the room is calculated as;

Volume = 15 ft x 15 ft x 20 ft = 4,500 ft³

The mass of the air is calculated as;

mass = density x volume

mass = 0.0724 lbm/ft³  x  4,500 ft³

mass = 325.8 lb-m

The weight of the air is calculated as;

Weight = mass x gravity

Weight = 325.8 lb-m x 32.174 ft/s²

Weight = 10482.29 lbm.ft/s²

The weight of the air in pound-force (lb-f) is calculated as;

1 lbf = 32.174 lbm.ft/s²

\(Weight =10,482.29\ lbm.ft/s^2\times \frac{1 \ lbf}{32.174 \ lbm.ft/s^2} \\\\Weight = 325.8 \ lbf\)

Therefore, the weight of the air in pound-force (lb-f) is 325.8 lbf

The centripetal acceleration of the mass is 10 m/s².

The centripetal acceleration of the mass when it is at the lowest position is calculated as follows;

Tsinθ = ma - mg

where;

when the mass is at the lowest position, θ = 0

The centripetal acceleration of the mass is calculated as follows;

T sin (0) = ma - mg

0 = ma - mg

ma = mg

a = g

Given that g, acceleration due to gravity = 10 m/s²

Hence, a = 10 m/s²

Learn more centripetal acceleration about here: https://brainly.com/question/79801

#SPJ1

The complete question is below:

A mass m is suspended by a massless string forming a simple pendulum of length 2.0 m. The string of the pendulum is initially at an angle of 60° with the vertically downward direction when the mass is released from rest. Calculate the centripetal acceleration of the mass when it is at the lowest position ( take g = 10 m/s²).

Answer:

planet that is farthest away is planet X

kepler's third law

Explanation:

For this exercise we can use Kepler's third law which is an application of Newton's second law to the case of the orbits of the planets

          T² = (\(\frac{4\pi ^2}{ G M_s}\) a³ = K_s a³

Let's apply this equation to our case

          a = \(\sqrt[3]{ \frac{T^2}{K_s} }\)

for this particular exercise it is not necessary to reduce the period to seconds

Plant W

             10² = K_s  \(a_{w}^3\)

             a_w = \(\sqrt[3]{ \frac{100}{ K_s} }\)

             a_w = \(\frac{1}{ \sqrt[3]{K_s} }\)  4.64

Planet X

             a_x = \(\sqrt[3]{ \frac{640^3}{K_s} }\)

             a_x = \frac{1}{ \sqrt[3]{K_s} } 74.3

Planet Y

              a_y = \(\sqrt[3]{ \frac{80^2}{K_s} }\)

              a_y = \frac{1}{ \sqrt[3]{K_s} } 18.6

Planet z

              a_z = \(\sqrt[3]{ \frac{270^2}{K_s} }\)

              a_z = \frac{1}{ \sqrt[3]{K_s} } 41.8

From the previous results we see that planet that is farthest away is planet X

where we have used kepler's third law

Answer:

Explanation:

Answer:

Explanation:

The gravitational force acting on a 70.0 kg object standing on the Earth’s surface is 687.37N

What is gravitational force ?

A mass attracts a mass; the amount of the gravitational force is directly proportional to the masses of the two items and inversely proportional to the square of the distance between the two objects. Gravitational force is an attractive force that exists between all objects with mass.

The square of the distance between two things has an inverse relationship with the force of gravity, which depends directly on the masses of the two items. Accordingly, the force of gravity increases with mass but decreases as object distance increases.

F = G (M*m) /r2

F =  6.674×10−11 * 5.972*10^24*70/ (6.371*10^6)^2

  = 687.37N

F = gravitational force

G = gravitational constant

m = mass of the body

M = mass of the earth

r = distance between them

To know about gravitational force from the link

https://brainly.com/question/25624188

#SPJ1

The running speed of Jenny willl be 2.5 times the velocity she walks.

The change of distance concerning to time is defined as speed. Speed is a scalar quantity. It is a time-based component. Its unit is m/sec.

Condition 1;

She takes 25 minutes to run 1,000 m and walk 1,600 m The total time to run as well as the walk is 25 minutes.

\(\rm t = t_r +t_w \\\\ 25 = t_r +t_w\)

As we know that;

Distance = speed × time

\(\rm x_r = v_r \times t_r \\\\ t_r = \frac{x_r}{v_r}\)

For walking;

\(\rm t_w = \frac{x_w}{v_w}\)

\(\rm t = t_r +t_w \\\\ 25 = \frac{x_r}{v_r} +\frac{x_w}{v_w} \\\\ 25 = \frac{1000 \ m}{v_r} +\frac{1600 \ }{v_w} \\\\ 40 v_w +64 v_r = v_rv_w\)

Same as for condition 2;

\(\rm 100 v_w + 40 v_r = v_rv_w\)

\(\rm 40 v_w +64 v_r =\rm 100 v_w + 40 v_r \\\\ v_r = 2.5 v_w\)

Condition 3;

\(\rm d_w = 800 \ m\)

\(\rm d_w = v_w \times t_w\)

\(\rm t_w = \frac{d_w}{v_w } \\\\ \rm t_w = \frac{800}{v_w } \\\\\)

Hence their running speed of Jenny willl be 2.5 times the velocity at she walks.

To learn more about the velocity, refer to the link: https://brainly.com/question/862972.

#SPJ1

Answer:

Et = 30018 [W]

Explanation:

To solve this problem we must use the definition of potential energy, which is expressed by the following equation:

\(E_{p} =m*g*h\)

where:

Ep = potencial energy [W]

g = gravity acceleration [m/s^2]

h = elevation = 120 [m]

m = mass flow = [1800/min]

But in order to get watts into potential energy, we must convert the mass flow from kilograms per minute to kilograms per second.

\(1800[\frac{kg}{min} ]*\frac{1}{60}\frac{min}{s}=30[\frac{kg}{s} ]\)

Ep = 30*9.81*120

Ep = 35316 [W]

If we use  85% of the potential  energy will have:

Et = 35316*0.85

Et = 30018 [W]

Answer:

Gravitational force related to distance because when an object is closer to the center of the earth the stronger the gravitational force is the farther an objects it from the center of the earth the weaker the gravitational force is. For example if you are on the moon there is no gravity because the gravitational force of the moon to the center of the earth is father away then for example standing on earth.