what is uniform velocity

Psychology is defined as the study of the brain in order to understand human behaviors.

The psychology science research field is a discipline aimed at understanding human behaviors and emotions by analyzing the functioning of the brain, which is the major organ in the nerve system responsible for modulating these types of functions.

Therefore, with this data, we can see that Psychology is a specific science research field related to understanding human behaviors and feelings by analyzing how the different parts of the brain are associated with this process.

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Answer: Psychology is the organized study of behavior and the mental processes that occur with it

Explanation:

Took the K12 test

Answer:

The table lists the chemical elements in order of increasing atomic number, which is the number of protons in an atom of an element.

Explanation:

The periodic table is a graphical collection of element data. The table lists the chemical elements in order of increasing atomic number, which is the number of protons in an atom of an element. The rows (periods) and columns (groups) organize elements according to similar properties.

The atomic number, or the number of protons in an element's atom, is used in the table to organize the chemical elements.

The Gaussian Model in subatomic particles, which allows the known elementary particles to be arranged according to their inherent properties, can be compared to the periodic table. The table is significant because it is set up to offer a wealth of knowledge on elements and their interactions in a single reference. Even elements that have yet to be found can have their properties predicted using the table.

All known elements are grouped together in the periodic table of the elements into groupings with related properties. It becomes a crucial tool for chemists, nanotechnologists, as well as other scientists as a result. You can forecast how chemicals will react if we learn to use and comprehend the periodic table.

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Answer:

Explanation:

According to the Law of Momentum Conservation, what happens after the collision has to equal what happened before the collision because momentum cannot be created nor destroyed; it has to go somewhere else. Like energy eventually dissipates into heat. The equation for this is:

\([m_Av_A+m_Bv_B)]_b=[(m_Av_A+m_Bv_B)]_a\) and filling in our info, calling right positive and left negative:

[(24(3.2) + 32(-12.8)] = [(24(-2.9) + 32(vB)] and

[(77 - 410)] = [(-7.0 × 10¹ + 32vB)] and

-330 = -7.0 × 10¹ + 32vB and

-260 = 32vB so

vB = -8.1 m/s Thus, cart B is moving to the left at a velocity of 8.1 m/s

(I used the rules for sig dig very intentionally and correctly; I'm not sure how strict your teacher is about them. I require my students to use the rules to perfection, as I did here.)

The time taken to reach one crest is 0.5731 s. Then the time period of the wave is 1.146 s. The frequency is the inverse of the period that is 0.87 Hz.

The time period of a wave is the time required to complete one wave cycle. For a transverse wave the period of the wave is the time required to reach from one crest to the next crest of the wave.

Given that, time to reach one crest = 0.5731 s.

then the time for to the next crest from the equilibrium position is :

T = 0.5731 s× 2 = 1.146 s.

Frequency of a wave is the number of wave cycles per second. It is the inverse of time period of the wave.

Hence, frequency = 1/T

ν = 1/ 1.146 s = 0.87 Hz.

Therefore, the period of the wave is 1.14 s and frequency is 0.87 Hz.

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Answer:

500 Newton itself

Explanation:

Newton's third law of motion

Answer:

An atomic nucleus is positively charged because it is composed of protons

Explanation:

Protons carry positive charge and nucleus only contain protons

When a resistor and a capacitor are connected in series to an ideal battery of constant terminal voltage, the voltage across the capacitor is zero at the moment contact is made with the battery.

What happens when a capacitor and a resistor are connected in series? Capacitors and resistors are often used in combination to build a wide range of electronic circuits. When a capacitor and a resistor are connected in series, the overall impedance of the circuit is affected, as is the overall circuit behavior. When a capacitor and a resistor are connected in series, the total impedance of the circuit is determined by their combined impedances. This total impedance will affect the overall behavior of the circuit, causing it to react in certain ways to different frequencies of input.

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Answer:

v = velocity

f = frequency

A = Wavelength

T = period

Explanation:

hope it helps

The heat generated due to the friction in the given process is 367.83 J.

Frictional heat generates when two surfaces slide against each other. The heat generated due to the friction in the given process is 6.92.7 J.

Frictional heat:

This heat is generated when two surfaces slide against each other.

Potential energy :-

U= m g h;

Put the values

U=  18.0-kg* 9.8 m/s^2 *2.20 m

U=388.08 J

The Kinetic energy in the bottom:

K = 1/2 * m * v^2

=  1/2 * 18.0* 1.50^2

K= 20.25 J

So the friction heat,

Hf = U - K

Hf = 388.08 J -20.25 J

Therefore, the heat generated due to the friction in the given process is 367.83 J.

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Answer:

Over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart, forming the continents as they are known today.

Explanation:

i took the active

Answer:

the continents were once connected as one landmass.

Explanation:

right on edge 2022

Frictional force is the force that opposes the motion or attempted motion of an object in contact with another object or surface. From the question,  the frictional force opposing the applied force is 7.85 N.

The frictional force can be arrived at by using the formula below:

Frictional force = coefficient of friction * normal force

where the normal force is the force exerted by the table on the block and is equal to the weight of the block, which is:

Normal force = mass * gravitational acceleration = 4.0 kg * 9.81 m/s²= 39.24 N

So, the frictional force is:

Frictional force = 0.20 * 39.24 N = 7.85 N

Therefore, the frictional force opposing the 20 N applied force is 7.85 N.

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The correct statement about systems is i) In a closed system, matter and energy cannot escape into its surroundings.

In a closed system, matter is not exchanged with its surroundings, but energy can still be transferred between the system and its surroundings. The total energy within a closed system remains constant, although it can change from one form to another (e.g., potential energy to kinetic energy).

Momentum is conserved in both closed and open systems. In an open system, matter and energy can enter or exit, but momentum is still conserved within the system.

While energy is conserved in a closed system, kinetic energy is not always conserved. Kinetic energy can be converted into other forms of energy within the system, such as potential energy or thermal energy.

the correct statement is only i. In a closed system, matter and energy cannot escape into its surroundings.

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A device that uses electromagnetic induction to transfer electrical energy from one circuit to another is a transformer.

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Answer:

A.  The angle between the force and displacement is 180°.

Answer:

a

Explanation:

Answer:

246.38N

Explanation:

Check the complete question in the attached diagram

The normal force acting on the body on an inclined is equal to the weight of the object as shown;

Weight = Normal force = mgcosθ

m is the mass of the box = 29kg

g is the acceleration due to gravity = 9.81m/s²

θ is the angle of inclination = 30°

N = 29 * 9.81 * cos 30°

N = 284.49cos30°

N = 246.38N

Hence the magnitude of the normal force is 246.38N

The force needed to break another wire of the same length and material but twice the diameter is 200N.

Because the wires are made of the same material, their modulus of elasticity must be the same.

As a result, the ratio of longitudinal stress to longitudinal strain (Young's Modulus of Elasticity) must be the same. Now, the strains in both wires must be the same before they break.

Therefore,

stress = Young's modulus × strain,

both wires must be the same.

Because the second wire has a diameter twice that of the first, its area of cross section is four times that of the first. As a result, in order to generate the same stress, the force applied to the second wire must be four times that applied to the first wire.(since stress = force/cross section area).

Thus, the force required to break the second wire is 4200=800N.

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Answer:To calculate the required values, we can use the formula for density: density = mass/volume.

i) Volume of water that fills the density bottle = mass of water/density of water

Mass of water = Mass of density bottle filled with water - Mass of empty density bottle = 53.2g - 13.2g = 40g

Density of water = 1g/cm³ (at room temperature and pressure)

Volume of water = 40g/1g/cm³ = 40cm³

ii) Capacity of the density bottle = Volume of water + Volume of lead shots

Volume of water = 40cm³ (calculated above)

Volume of lead shots = Volume of density bottle filled up with lead shots and water - Volume of water

Volume of density bottle filled up with lead shots and water = Mass of density bottle with lead shots filled up with water - Mass of empty density bottle

= 166.1g - 13.2g = 152.9g

Volume of lead shots and water = Volume of density bottle filled up with lead shots and water - Volume of water

Volume of lead shots and water = 152.9cm³ - 40cm³ = 112.9cm³

Assuming that the volume of water in the partially filled density bottle is negligible, we can take the volume of lead shots to be equal to the volume of the partially filled density bottle.

Capacity of the density bottle = Volume of water + Volume of lead shots = 40cm³ + 112.9cm³ = 152.9cm³

iii) Mass of lead shots = Mass of density bottle with lead shots filled up with water - Mass of density bottle filled with water

= 166.1g - 53.2g = 112.9g

iv) Volume of lead shots = Mass of lead shots/density of lead

Density of lead = 11.34 g/cm³ (at room temperature and pressure)

Volume of lead shots = 112.9g/11.34 g/cm³ = 9.96 cm³ (approximately)

v) Density of lead = Mass of lead shots/Volume of lead shots

Density of lead = 112.9g/9.96cm³ = 11.32 g/cm³ (approximately)

Therefore, the required values are:

iii) Mass of lead shots = 112.9g

iv) Volume of lead shots = 9.96cm³ (approximately)

v) Density of lead = 11.32 g/cm³ (approximately)

Explanation:

The work done in pumping all the liquid out of the tank is 2500π lb-ft.

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

PE = mgh

Given:

Density of oil = 50 lb/ft^3

Diameter of the tank = 10 ft ( r = 5 ft)

To calculate the work done, we need to find the mass of the oil and the height it is lifted. Let's start by finding the mass:

Volume of oil in the tank:

The volume of a hemisphere = (2/3) * π * (r^3)

Volume = (2/3) * π * (5^3) = (2/3) * π * 125 = 250π/3 ft^3

Mass of the oil:

Mass = Volume * Density = (250π/3) * 50 lb

Now, we need to find the height of the tank. For a hemisphere, the height is equal to the radius (5 ft).

Finally, we can calculate the work done:

Work = PE = mgh = (250π/3) * 50 lb * 5 ft

Work = (250π/3) * 50 * 5 lb-ft

       = 2500π lb-ft

So, the work done in pumping all the liquid out of the tank is approximately 2500π lb-ft.

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The length of the string that vibrates at its third-harmonic frequency is 120 cm.

When a string vibrates at its third-harmonic frequency, it has three nodes and four antinodes. The nodes are the points where the string does not move, and the antinodes are the points where the string has maximum amplitude.

The distance between two adjacent nodes or two adjacent antinodes is one-fourth of the wavelength. Since the amplitude at a point 30 cm from one end is half the maximum amplitude, this point is halfway between a node and an antinode. Therefore, the distance from this point to the nearest node or antinode is one-eighth of the wavelength.

Since the distance from the point to the nearest node or antinode is 30 cm, one-eighth of the wavelength is 30 cm. The wavelength is therefore 240 cm.

The length of the string is equal to one-half of the wavelength when it vibrates at its third-harmonic frequency. Therefore, the length of the string is 120 cm.

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Answer:

2.16×10⁻⁶ N

Explanation:

Applying,

F = kqq'/r² (coulomb's Law)....................... Equation 1

Where F = electrostatic force, k = coulomb's constant, q = charge on the styrofoam, q' = charge on the grain of salt, r = distance between the charges.

From the question,

Given: q = 0.002 mC = 2.0×10⁻⁶ C, q' = 0.03 nC = 3.0×10⁻¹¹ C, r = 0.5 m

Constant: k = 8.99×10⁹ Nm²/C²

Substitute these values into equation 1

F = (2.0×10⁻⁶)(3.0×10⁻¹¹)(8.99×10⁹)/0.5²

F = 2.16×10⁻⁶ N

Answer:

P =

\( \frac{mc{q2 - q1}{t} \)

The high luminosity of the galactic center region suggests that there is a high concentration of stars and other celestial objects emitting light in that area.

This high luminosity can be attributed to the presence of a supermassive black hole, dense star clusters, and active star formation processes, all contributing to the increased brightness observed in the galactic center region.

According to the idea behind active galactic nuclei, heated plasma in an accretion disc that revolves around the black hole is principally responsible for the active galactic nucleus' high luminosity.

An active galactic nucleus (AGN) is a compact area at the Centre of a galaxy that exhibits features that indicate the luminosity is not coming from stars and is substantially brighter than usual over at least some of the electromagnetic spectrum. Is called active galactic nucleus.

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Answer:

c

Explanation:

diluted means weakened

Another term for weak solutions is dilute solution. Thus, the correct option for this question is C.

A weak solution may be defined as a type of solution that significantly partially dissociates into its ions in an aqueous solution or water. In contrast, a strong solution fully dissociates into its ions in water.

The concentration of the weak solution is found to be lower as compared to the strong solution. The word dilute also symbolizes the presence of less concentration in any solution.  

The main difference between weak and strong solutions is true that for strong solutions we are given a Brownian motion on a given probability space whereas for weak solutions we are free to choose the Brownian motion and the probability space.

Therefore, another term for weak solutions is dilute solution. Thus, the correct option for this question is C.

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Answer:

21.2m/s

Explanation

Given data

P=6.36 x 10⁴kg·m/s.

M=3000kg

From the momentum expression

P=mv

v=p/m

Substitute

v=63600/3000

v=21.2m/s

Hence the Velocity is 21.2m/s

The speed of the truck is 21.2 m /s

Momentum is the product of the mass of the object and the velocity of the object. Therefore,

p = mv

where

m  = mass

v = velocity

m = 3000 kg

p = 6.36 x 104 kg·m/s.

lets find the velocity

6.36 x 10⁴  = 3000 × v

v = 6.36 x 10⁴ / 3000

v = 21.2 m / s

The speed of the truck is 21.2 m /s

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Answer:

\(a = \frac{v - u}{t} \\ a = \frac{60 - 80}{5} \\ a = - 4 \: m {s}^{ - 2} \)

Answer:

Explanation:

The acceleration of an object (in this case, a bus) can be calculated by finding the difference between its final velocity (V) and initial velocity (U), and dividing that difference by the time it takes for the change to occur (t).

In this specific example, let's convert the initial velocity (U) of the bus from kilometers per hour (km/hr) to meters per second (m/sec) by multiplying it by 5/18. This gives us a value of 22.22 m/sec. Similarly, the final velocity (V) is converted to 16.67 m/sec.

Using the formula for acceleration (a = (V - U) / t), we substitute the values:

a = (16.67 - 22.22) / 5

Simplifying this equation, we get:

a = -5.55 / 5

This results in an acceleration of -1.11 m/s². The negative sign indicates that the velocity of the bus is decreasing.

Therefore, the acceleration of the bus, as it decreases its speed from 80 kilometers per hour to 60 kilometers per hour in 5 seconds, is approximately -1.11 m/s².