which of the following tests is performed to measure the amount of elongation and the yield point of a metal?

Since  P = m v, we know that linear momentum

The moment of linear momentum is the angular momentum.

Since  L = m v r, the angular momentum

The particle moving uniformly round has an angular momentum that is not zero. However, because the torque is in the radial direction, the angular momentum of the particle moving in a circular motion is still conserved around the axis of rotation. Thus, the change in angular momentum can be regarded as zero.

When an object's mass (m) and velocity (v) are multiplied, the result is linear momentum (p): p = m*v. The definition of angular momentum (L), with some simplification, is the object's distance from the rotational axis multiplied by the linear momentum: L = mvr.

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The model accurately captures the energy transfer that takes place as the change represented by the process, which is exothermic and adds energy to the system as the change occurs.

An exothermic reaction is one in which heat or light are released as forms of energy. As a result, in contrast to an endothermic reaction, energy is transferred into the surroundings in an exothermic reaction. Exothermic  reactions are those that want to the release energy. When bonds are broken in the reactants during exothermic reactions, more energy is released when bonds are formed in the products. Endothermic chemical reactions are those that either use or absorb energy. Condensation of water vapor into rain is an exothermic process that releases heat energy. In endothermic chemical reactions, the reactants absorb heat energy from their surroundings to produce products.

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The frequency of the green light of the electromagnetic spectrum is 5.45 × 10¹⁴ Hz.

The green light is found in the visible region of the electromagnetic spectrum.

An Electromagnetic is a spectrum which is made up of all kind of wave is constitute and electric as well as magnetic field.

The green light which is the constituent of the white light fall under the visible region of the electromagnetic spectrum so it can have the frequency 5.45 × 10¹⁴ Hz.

This frequency is more than the infrared frequency but less than the ultraviolet frequency.

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The maximal electron energy in neutron beta decay is approximately 782 33 KeV; nevertheless, the number is rounded off here to 783 KeV.

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The momentum conservation equation for the east-west components is

[tex]m_{1} u_{1} = v(m_{1} + m_{2} )[/tex]

The momentum conservation equation for the north-south components is

[tex]m_{2} u_{2} = v(m_{1} + m_{2} )[/tex]

The tangent of angle is 1.

Applying the principle of conservation of linear momentum of inelastic collision we get:

[tex]m_{1} u_{1}+ m_{2} u_{2} = v(m_{1} + m_{2} )[/tex]

where [tex]m_{1}[/tex]= mass of car 1

          [tex]m_{2}[/tex]= mass of car 2

          [tex]u_{1}[/tex]= velocity of car 1

          [tex]u_{2}[/tex]= velocity of car 2

          v= velocity after collision

i.e. The momentum conservation equation for the east-west components is written as follows:

[tex]m_{1}( u_{1}cos0)+ m_{2} (u_{2}cos90)= v(m_{1} + m_{2} )[/tex]

= [tex]m_{1} u_{1} = v(m_{1} + m_{2} )[/tex]

Similarly,the momentum conservation equation for the north-south components is written as follows:

[tex]m_{1}( u_{1}sin0)+ m_{2} (u_{2}sin90)= v(m_{1} + m_{2} )[/tex]

=[tex]m_{2} u_{2} = v(m_{1} + m_{2} )\\[/tex]

The tangent of the angle is

[tex]tan\alpha = p_{y} /p_{x} = v(m_{1} +m_{2})/v(m_{1} +m_{2})=1[/tex]

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215 grams of water are added to a mixture of 25.0 grams of chromium at a final temperature of 14.6 degrees Celsius. 15.1°C is the temperature if no heat is lost to the environment.

According to principle of calorimetry, heat lost by one system is equal to heat gained by another system.

eat change = m*C*∆T

Where, m is mass of system, C is specific heat and ∆T is temperature change.

Let the final temperature be T °C

Heat lost by chromium = -(25.0 g)*(0.45 J/ g °C)* ((T-54.5)°C) = -{11.25 *(T-54.5)} J

Heat gained by water = (215 g)*(4.184 J/ g °C)*((T-14.6 )°C) = {899.56*(T-14.6)} J

Heat lost by chromium = Heat gain by water

-{11.25*(T-54.5)} = 899.56*(T-14.6)

Solving we get T = 15.1

So, final temperature is 15.1 °C

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(a) Capacitance of the parallel plate capacitor is [tex]3.54\times10^{-9} F[/tex]

(b) Charge on each plate is [tex]3.54\times10^{-6} C[/tex]

(c) Magnitude of the electric field between the plates [tex]2\times 10^{5} N/C[/tex]

It is given that the plates of the parallel-plate capacitor in vacuum are 5.00 mm apart and 2.00 [tex]m^{2}[/tex] in area.

It is also given that a 10.0 kv potential difference is applied across the capacitor.

Capacitance of a parallel plate capacitor when the area of its place and the distance between them is given by,

[tex]C=\frac{A\epsilon_{o}}{d}[/tex]

[tex]C=\frac{2\times\8.85\times10^{-12} }{5\times10^{-3} }[/tex]

[tex]C=3.54\times 10^{-9} F[/tex]

When the capacitance and potential difference applied across it is known, charge on each plate of a parallel plate capacitor  is given by,

[tex]q=CV[/tex]

[tex]q=3.54\times10^{-9} \times10000[/tex]

[tex]q=3.54\times10^{-6} C[/tex]

Magnitude of electric field between the plates is given by the expression,

[tex]E=\frac{\sigma}{\epsilon_{o} }=\frac{C}{A\epsilon_{o}}=\frac{CV}{\epsilon_{o}}[/tex]

[tex]E=\frac{3.54\times10^{-9}\times10000 }{8.85\times10^{-12} }[/tex]

[tex]E=2\times10^{5} N/C[/tex]

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Answer:

Explanation:

Given:

m = 5·10⁻²⁷ kg

V₁ = 2·10⁵ m/s

V₂ = 4·10⁵ m/s

D = 10cm = 0.10m

_______________

a - ?

The change in kinetic energy is equal to the work:

Ek₂ - Ek₁ = F·D

m·V₂² / 2 - m·V₁² / 2 = F·D

(m/2)·(V₂² - V₁²)  = F·D

Force:

F = (m/2)·(V₂² - V₁²) / D

F =   m·(V₂² - V₁²) / (2·D)

F = (5·10⁻²⁷)·( (4·10⁵)² - (2·10⁵))/ (2·0.10) ≈ 3·10⁻¹⁴ N

The travelling Four waves is T1 = T3 = 2π /21, T2 = T4 = 2π/42.

Wave 1, y1 = 0.12 cos(3x - 21t)

Wave 2, y2 = 0.15sin(6x + 42t)

Wave 3, y3 = 0.13cos(6x + 21t)

Wave 4, y4 = -0.27sin(3x - 42t)

The following provides the travelling wave's general equation:

y = A cos(kx ± ωt)

If we consider phase difference, the value of ω will remain constant.

The initial wave,

ω1 = 21

2π /T1 = 21

T1 = 2π /21

Second wave,

ω2 = 42

2π /T2 = 42

T2 = 2π /42

Regarding the third wave,

ω3 = 21

2π /T3 = 21

T3 = 2π /21

Regarding the fourth wave,

ω4 = 42

2π /T4 = 42

T4 = 2π /42

The equations shown above clearly show that waves 1 and 3 have the same duration. Additionally, waves 2 and 4 have the same duration. This is the necessary remedy as a result.

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Answer:

Vertical

Explanation:

Addition of a control group that does not use the drink additive would help Dr. Bloedorn address which of the following threats to internal validity IS history

Internal validity makes the conclusions of a causal relationship credible and trustworthy. Without high internal validity, an experiment cannot demonstrate a causal link between two variables. Research example You want to test the hypothesis. that drinking a cup of coffee improves memory.

You want to test the hypothesis that drinking a cup of coffee improves memory. You schedule an equal number of college-aged participants for morning and evening sessions at the laboratory. For convenience, you assign all morning session participants to the treatment group and all evening session participants to the control group.

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The mean±standard deviation of your profits from a single wager will be P=0.74

The term "standard deviation" refers to a measurement of the data's divergence from the mean (or ""). The idea that the data are centered around the mean when the variance is low is opposed to the idea that the data are more dispersed when the mean difference is high.

The data's degree of departure from the mean is indicated by the standard deviation. It is beneficial to compare data sets that can have a similar median but a distinct range. For instance, the mean of the two integers 15, 15, 15, 14, 16, & 2, 7, 14, 22, 30 is the same. However, the second is definitely more spread.

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In the given statement about forces both TRUE and FALSE statement contains.

1. The coefficient of static friction is always greater than the coefficient of kinetic friction. FALSE

2. Newton's first law of motion relates an object's acceleration to the net force acting on it.FALSE

3. The equilibrant force has same magnitude as the resultant force as well as same direction.FALSE

4. An object is held at rest on an inclined plane will have two components of its weight; Fax. which is parallel to the plane and F, which is perpendicular to the plane.TRUE

5. When a projectile is launched horizontally, the acceleration along x- direction is always equals to 9.8 m/s².FALSE

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Displacement in unit vector is  85i + 85j.

When moving from one location to another, the displacement vector resembles an arrow, with its tip at the second point and its tail at the first. The length of the arrow is a symbol for the displacement vector's magnitude, which represents the distance between the locations.

Calculation:

The mathematical notation for the displacement vector R is given by

R cosφi + R sinφj

Now a bird flies straight northeast a distance of 95.0 km for 3.0 h such that x-axis points towards east and the y-axis points towards north.

Now put R = 95 and φ =  45

95.0 cos 45°i + 95.0 sin j  = 95.0i / √2 + 95.0j / √2  =  85i + 85j

Therefore, displacement vector is 85i + 85j.

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A 750kg car with an initial speed of 110km/hr is observed to coast up a hill to a height of 22m above its starting point, how much thermal energy was generated by friction.  188462 J

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material factors sliding against each other. There are numerous kinds of friction:

while surfaces in touch pass relative to every other, the friction between the 2 surfaces converts kinetic strength into thermal energy (this is, it converts paintings to warmth). This belongings may have dramatic results, as illustrated through using friction created by rubbing pieces of wooden together to start a fireplace. Kinetic power is transformed to thermal electricity every time motion with friction happens, as an example while a viscous fluid is stirred. every other vital consequence of many varieties of friction may be wear, which might also cause overall performance degradation or damage to additives. Friction is a component of the technology of tribology.

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A planet orbiting another star is made primarily of hydrogen and helium and has approximately the same mass as jupiter but is the same size as neptune. This statement is false.

The given statement is false, because this statement is contradictory. Hydrogen-helium planet would have to be more gravitationally compressed in order to be smaller than Jupiter. So it would have to have a larger mass than Jupiter and also a planet with that size and mass would be too dense to be made of helium and hydrogen.

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The pressure increases due to the frequency of collisions between molecules and the container walls increases.

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The frequency of a wave that has a length of 5 m and a speed of 65 m is 13 Hz

The wave frequency formula is a way of calculating the number of waves in a unit of time.

The frequency is denoted by (f) which can be calculated using the formula for the number of vibrations divided by the time of vibration or n/t.

In waves, the following equation applies:

v = s/t = λ/T = λf

So, the frequency of a wave that has a length of 5 m and a speed of 65 m is:

f = v/λ

= 65/5

= 13 Hz

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The wrench's mechanical advantage is 50 when you can move a bolt 0.01 m by moving the handle 0.50 m.

Therefore,

Mechanical Advantage = output force/input force

MA = .50/.01

MA = 50

Answer is 50

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the new capacitance is 2Co.

What is capacitance?

Capacitance is a property of an electric conductor or group of conductors measured by the amount of separated electric charge that may be held on it per unit change in electrical potential. The SI unit of electrical capacitance is Farad which is represented by the symbol F. It is calculated by Co = εo(πd2)/L

where,

εo = electrostatic constant

d = diameter

L = distance between the plates

here,

diameter becomes doubled = 2d

distance between the plates is doubled = 2L

Co = εo(πd2)/L

so,

new capacitance = ε[tex]_{o}[/tex](π [tex](2d)^{2} )/(2L)[/tex]

new capacitance = ε[tex]_{o}[/tex](π [tex](4d} )/(2L)[/tex]

so comparing with original capacitance,

new capacitance = 2Co

the new capacitance is 2Co.

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In this statement of propane  molecules answer is E - 1,2 and 3 only.

What is propane?

propane and carbon are the  monoxide have differentions properties. They do not have- the same density or the  ability to combust. And  Propane has 11 atoms per the  molecule and carbon to  monoxide has only two.

Sol-Robert Rose hypothesis says that all gases will have the same number of molecules under the same conditions. Alejandro said that if all gases have the same volumes, they should have the same number of Molecules or moles. Boulding was directly proportional to the number of moles and the volume was proportional to the evolve mole.

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The current drawn from the line if the supply voltage is 220 v

We are given two lamps

Power of one lamps = 100 W

Power of second lamps = 60 W

Voltage of main supply = 220 V

Total power consumed in the circuit =

100 + 60 = 160 W

Now, using the formula of Power,

P = VI

I = Power/V = 160/220 = 0.727 A

Therefore, 0.727 A current is drawn from the line when the supply voltage is 220 V

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They are the four primary categories of malware.

(1) Adware; (2) Fileless Malware; (3) Viruses; and (4) Worms.

Malware is not always a virus, even though all computer viruses are malware. Viruses are only one kind of malware. The phrases viruses and malware are frequently used interchangeably, however they are not the same thing technically.

Your computer may be infected with malware if you notice that your homepage has changed or if you have new toolbars, extensions, or plugins installed. There are many different reasons for this, but the most common one is that you clicked on the "congratulations" pop-up and it downloaded some undesirable software.

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Ball is going at the lowest point in its swing at the speed of 3.1 m/s

PE at upper point = mgr = m x 10 x 50/100

PE = 5m

KE at lowest point = mv^2/2

EV = PE + KE = mv^2/2 = 0

Speed is defined as The rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered

Using Conservation of energy

mv^2/2 = 5 m

v^2 = 10

v = √10 m/s

= 3.1 m/s

Hence, Ball is going at the lowest point in its swing at the speed of 3.1 m/s

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Final velocity will be 12 m/s, beginning velocity was 2m/s and the object acceleration is 10 m/s.

Equation w = theta / t, where w is the angular velocity, theta is the position angle, and t is the time, denotes the rate at which an object's position angle changes with respect to time.

Equation v = ω × r . The equation of angular velocity can be obtained by rewriting this expression as follows: = r v / |r|2, where |r| stands for the radius's absolute value. All of these variables are vectors.

Your final velocity will be 12 m/s (2 + 10 = 12) if your beginning velocity was 2m/s and the object acceleration is 10 m/s.    

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10% of the energy from sunlight is converted into gross primary production.

Sunlight, also known as solar radiation, refers to the incoming light to the Earth that originated from the Sun. This light represents a portion of the electromagnetic spectrum that includes infrared, visible light, and ultraviolet light.

Scientists define energy as the ability to do work. Modern civilization is possible because people have learned how to change energy from one form to another and then use it to do work.

Gross primary production (GPP) is the total amount of carbon dioxide "fixed" by land plants per unit time through the photosynthetic reduction of CO2 into organic compounds.

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The right cap will be at the same height as the left cap.

As  1.0- kg -mass block is placed on each cap after the caps have moved (if necessary) to reestablish equilibrium, after the satisfaction of the condition of the equilibrium, it can be observed that both the caps are at same height.

As equilibrium is  a state of balance between opposing forces or actions. The temperature, pressure, and concentration of the system are all factors that affect equilibrium. When one of these factors changes, the equilibrium of the system is disrupted, and the system readjusts itself until it returns to equilibrium. There are three states of equilibrium namely: Stable equilibrium and Unstable equilibrium. A neutral equilibrium.

Hence, the right cap will be at the same height as the left cap.

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The dangling box containing precious works of art. A) T=2.6W, 3.28W, 37.6°; B) T=4.1W, 5.39W, 48.8°

(a) Let the tension in the cable be \[T\] . Weight of the suspended object, \[{W_{{\rm{obj}}}} = w\] The angle that the cable makes.

Magnitude in physics is simply described as "distance or quantity." It shows the size or direction that an object moves in either an absolute or relative sense. It is a method of expressing there is something size or range. Magnitude in physics often describes a length or a size.

A magnitude can be defined as a quantity's size in simple terms. For instance, the Richter scale's measurement of an earthquake's magnitude, which identifies the earthquake's size, typically ranges from 1 to 10.

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Reactivity of metal increases with increase in temperature because temperature directly increases the Kinetic Energy of the Electrons. These electron with increased Kinetic Energy vibrate with greater energy and cause more collisions. Hence the Metal's reactivity increases.

The propensity to lose electrons determines a metal's reactivity. The valence electrons are easily removed as the atomic scale grows, creating positive ions. Moving down the periodic table increases the atomic size of metals. The propensity to acquire electrons affects the reactivity of non-metals.

Metal reactivity increases down groups and declines from left to right throughout periods. Nonmetallic traits are grouped down and increase from left to right. Nonmetal reactivity rises in the left-to-right direction and falls in the downward direction.

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girls that dichotomous, or “black-and-white,” thinking plays a key role in producing and maintaining dependent personality disorder comes from the cognitive-behavioral perspective.​

Cognitive behavioral therapy (CBT) is a speakme remedy that assists you to manipulate your problems by changing the manner you believe you studied and behave. it's most usually used to treat tension and despair, however, may be useful for different mental and physical health troubles.

CBT remedy generally involves efforts to trade thinking styles. these strategies may encompass: studying to understand one's distortions in wondering that are developing issues, after which to reevaluate them in light of truth. Gaining a better understanding of the behavior and motivation of others.

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