A particle moving in a straight line with uniform deceleration has a velocity of 40m/s at point p, 20m/s at point q and comes to rest at point R where QR=50m .Calculate the 1.Distance PQ 2.Time taken to cover PQ 3.Time taken to cover PR
solve for me pls
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Answer:

Book. Bottle. table are some examples of objects in equilibrium found in classroom

The Sahara and Australian deserts (among others) are associated with a sub-trpical high-pressure belt.

This location is for that reason a place of high stress. it's also called the pony range. Winds usually blow from excessive strain to low strain. So the winds from the subtropical region blow towards the Equator as change winds and some other winds blow toward Sub-Polar Low-pressure as Westerlies.

For the duration of the Northern Hemisphere's summer, the oceans are generally cooler in comparison to the warmer continents. In flip, cooler, denser maritime air that overlies the oceans serves to enhance surface pressures, paving the way for quite robust subtropical highs throughout summer.

The subtropical high-pressure belt vicinity is also referred to as the pony range. Those latitudes are characterized via calm winds and little precipitation.

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Sulphur

The missing element is sulphur

Here the compound is composed of  element X and chlorine.

it is given,

XCl (6) ----> 6Cl

mass = 13.1%

it is X and Cl = 100%-13.10%

                     = 86.90%

chlorine = 86.90            

X = 13.10

We assume 100g of sample

so according to the above solved data, in 100g of sample we have 86.90 g of chlorine.

now we split that chlorine into two moles of chlorine.

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a) For 0 compressions:

potential energy = U =  0 J

kinetic energy = k = 0.383 J

total mechanical energy = E = 0.383 J

b) For compression of 1 cm:

potential energy = U = 0.0228 J

kinetic energy = k = 0.155 J

total mechanical energy = E = 0.383 J

c) For compression of 2 cm :

potential energy = U = 0.1104 J

kinetic energy = k = 0.272 J

total mechanical energy = E = 0.383 J

d) For compression of 3cm:

potential energy  = U = 0.248 J

kinetic energy = k = 0.177 J

total mechanical energy = E = 0.383 J

The equations for kinetic energy is:

k= 1/2*m*[tex]v^{2}[/tex]

The equation for elastic potential energy is:

U= 1/2*ks*[tex]x^{2}[/tex]

Where,

m= mass of the block

v= velocity

ks= spring constant

x= displacement of the spring

(a)when compression= 0 cm

U= 1/2*ks*[tex]v{2}[/tex]

U= 1/2*552*[tex](0)^{2}[/tex]

 = 0 J

Kinetic energy:

k= 1/2*m*[tex]x^{2}[/tex]

k= 1/2*(1.05)*[tex](0.855)^{2}[/tex]

k= 0.383 J

Mechanical energy:

E= k + U

E= 0.383+0

E= 0.383 J

There will be no work done by friction or any other dissipative force, hence this energy will be conserved, or it will remain constant (like air resistance). This indicates that only spring potential energy will be created from the kinetic energy (there is no thermal energy due to friction, for example).

(b) spring potential = ?

U= 1/2* 457 N/m*[tex](0.01)^{2}[/tex]

U= 0.0228 J

Since the mechanical energy must remain constant, we may calculate the kinetic energy using the mechanical energy equation:

E= k + U

0.383= k + 0.0228

k= 0.383 - 0.228

k= 0.155

(c)spring constant when x= 0.02

U= 1/2*552*[tex](0.02)^{2}[/tex]

U= 0.1104 J

Using the equation of mechanical energy:

E= k +U

0.383= k+ 0.1104

k= 0.383 - 0.1104

k= 0.272 J

(d) U= 1/2*552*[tex](0.03)^{2}[/tex]

U= 0.2484 J

E= 0.383 J

k = E - U

k= 0.383- 0.206

k= 0.177

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An advantage of transmitting information using digital signals is A. Digital signals send information very quickly with excellent quality.

A digital signal is a signal that means data as a sequence of discrete values. A digital signal can only carry on one value from a finite set of possible values at a given time. With digital signals, the physical quantity expressing the information can be many things: Variable electric current or voltage line.

Digital signals can transmit information with less noise, distortion, and interference. Digital circuits can be reproduced easily in mass amounts at comparatively low costs. Digital signal processing is more flexible because DSP operations can be changed using digitally programmable systems.

Digital signals can be transmitted over transmission lines using either serial or parallel transmission. With serial communication, the sequence of bits used to represent a value is sent in sequence along a single transmission line.

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This question is an illustration of the distance postulate.

The distance between any two different points equates to a single positive real integer, according to the postulate of distance.

The full text is: The distance is a positive unique integer between every pair of different locations.

Consider two separate points A and B as an example.

The distance between A and B is the integer that represents the size of A and B.

The positive number (i.e. the distance) between A and B would be:

d= B-A

d = 6 - 1

d = 1

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Pressure can be calculated by Pressure=Force/Area.

Therefore, if the area is decreased or reduced then pressure will be increased.

The physical amount of force applied to a certain region is known as pressure. Pressure is defined as force per unit of area. The pressure being applied to a body may be calculated by taking the amount of force being applied and dividing it by the area of contact.

Pressure=Force/Area.

two examples where the factor perpendicular is practically used to increase pressure

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According to Stephanie, is the optimal production quantity per cycle. The best output rate each cycle for each day of the week, as determined by Step 1 by Stephanie, might be: To calculate each model's daily demand, multiply the weekly demand for each model by 5.the total number of protons and neutrons found in an atom's nucleus.

The mass number is an production that roughly equates to the atomic mass's numerical value. Despite being unitless, the mass number is assigned atomic mass units (amu). The average atomic mass of any molecule or polyatomic ion can be determined from its composition by summing the rate masses of the constituent atoms.

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use Newton's gravitational law and 2nd law .....

When the range of one or both of the variables is restricted, the correlation will be decreased

Restriction of range is the term applied to the case in which observed sample data are not available across the entire range of interest.

Correlation is a statistical measure (expressed as a number) that describes the size and direction of a relationship between two or more variables. A correlation between variables, however, does not automatically mean that the change in one variable is the cause of the change in the values of the other variable.

Restricted ranges affect correlations. In fact, when the range is restricted, a peculiar phenomenon happens: the correlation coefficient goes down. The range restriction causes the standard deviation of the variable x to shrink which reduces the correlation of x to some variable y. Analogue, range restriction can also affect the coefficients in multiple regression

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Beta decay forms a daughter nucleus with a different atomic number than the parent nucleus. The correct answer is option B.

A nucleus loses an electron when it emits the beta particles. The parent and daughter nuclei share the same atomic mass because the mass of an electron is so much less than that of a proton or neutron. The offspring nucleus has an atomic number that is one higher than the parent nucleus.

There are mainly two types of beta decay: beta plus (positron decay) and beta minus (electron decay). The daughter atomic number reduces by one after beta plus decay (the nucleus loses one positive charge) and rises by one after beta minus decay (the nucleus loses one negative charge).

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The focal length of the mirror will be 0.33 m

Focus is defined as the point through which the reflected light rays pass (or appear to pass) when incident light rays are parallel to the principal axis. It is located at the midpoint of pole and center of curvature. The distance between the pole and the focus of the mirror is called the focal length of the mirror.

F =2R or focal length of a mirror is half of its radius of curvature.

The radius of curvature of convex or concave mirror is equal to two times of the focal length of convex or concave mirror. The radius of curvature is the radius of sphere formed by the convex or concave mirror. It is also equal to the distance between the pole and center of curvature.

F = 1/R

R = 3 m (given )

F = 1 / 3 = 0.33 m

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A skater can spin faster by pulling her arms closer to her body or spin slower by spreading her arms out from her body due to conservation of angular momentum

What is the principle of conservation of angular momentum?

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Rubbing water (isopropyl alcohol) has lesser surface tension than that water.

Water possesses a surface tension of 72 dynes/cm.

Whereas rubbing alcohol has a surface tension of 23 dynes/cm.

Surface tension is the propensity of liquid surfaces at rest to shrink to the smallest possible surface area.

Because the atoms on the outside of the molecules (often hydrogens) lack strong hydrogen bonding capabilities, most organic liquids have very low surface tensions. Because isopropanol contains just 28%, OH and the remainder is CH or CH3, the linkages that hold a droplet together are few and far between.

The only substance with a higher surface tension than water is liquid mercury (450 dyne/cm).

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The theorem of conservation of mechanical energy is used

a) The initial kinetic energy is, K = 1.33 10⁻⁶ J

b) The fraction of kinetic energy converted to potential energy, U/K = 1.96

The total mechanical energy which is defined as the sum of kinetic energy plus potential energies, is given as

                                            E = K + U

To find the speed of the flea jump when there is no friction,

Initial point

E₁ = K = ½ m v²

Final point.

At the highest height h = 30 cm = 0.30 m because there is no friction

E₂ = U = mgh

Energy is conserved

E₁ = E₂

½ mv² = mgh

v = [tex]\sqrt{2gh}[/tex]

v = [tex]\sqrt{2(10)(0.4)}[/tex]

v = [tex]\sqrt{4}[/tex] m/s

v = 2 m/s

A) Now we have to find the initial kinetic energy

K = ½ m v²

K = ½ (0.5 × 10⁻⁶) (2)²

K = 1 × 10⁻⁶ J

B) Now we have to find the fraction of energy lost if we take into account the friction of the air

The initial kinetic energy

K = ½ m v²

Now we have to look for the potential energy until h’= 20 cm = 0.20 m

U = mgh'

The fraction of energy lost,

U/K = mgh'/½ mv²

      = 2gh'/v²

      = 2 × 9.8 × 0.2/ 2

      = 1.96

Therefore,

a) The initial kinetic energy is, K = 1 × 10⁻⁶ J

b) The fraction of kinetic energy converted to potential energy, U/K = 1.96

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Two planets, john and mary, are identical in density and temperature, but mary is larger in size (radius) than john. Mary will have more substantial atmosphere because mary is larger in size .

A substantial atmosphere is one dense enough to significantly affect the surface

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.

The thickness of a planet's atmosphere depends on the planet's gravity and the temperature of the atmosphere. A planet with weaker gravity does not have as strong a hold on the molecules that make up its atmosphere as a planet with stronger gravity.

As the planet grows in size, its mass and therefore gravity increases, allowing it to capture not only the accumulated dust and rocks, but also the gas, which forms an atmosphere.

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Merge sort requires more space than quick sort. Bogo sort is used by the other algorithm to use less space and run slightly faster in average case.

To find the answer, we need to know more about the Maxillary space.

Thus, we can conclude that, merge sort requires more space than quick sort. Bogo sort is used by the other algorithm to use less space and run slightly faster in average case.

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The flow of electricity can be compared of water in the pipes because both water and electricity moves in the channel.

Water flowing in pipes is like flowing of electricity in a circuit. A battery is like a pump from where electricity comes and moves in the circuit. Electrons flowing through wires are like water molecules flowing through pipes. So in comparison between water and electricity, both water and electricity are similar to each other in flowing and movement.

So we can conclude that the flow of electricity can be compared of water in the pipes because both water and electricity moves in the channel.

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4.266 m is the radius of the circular path the electron follows.

Given

Speed of electron (v) = 7.5 × 10⁶ m/s

Earth's Magnetic Field (B) = 1 × 10⁻⁵ T

We already know that

Mass of electron (m) = 9.1 × 10⁻³¹ kg

Charge on electron (q) = 1.6 × 10⁻¹⁹ C

According to the formula

Radius of circular path(r) = mass on electron × speed/ Charge × Magnetic field

Radius of circular path(r) = m × v/q × B

Put the values into the formula

r = 9.1 × 10⁻³¹ × 7.5 × 10⁶/ 1.6 × 10⁻¹⁹ × 10⁻⁵

On solving, we get

r = 4.266 m

Hence, 4.266 m is the radius of the circular path the electron follows.

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Answer:

See below

Explanation:

Vertical position is given by

df = do + vo t - 1/2 a t^2      df = final position = 0 (on the ground)

                                           do =original position = 2 m

                                            vo = original VERTICAL velocity = 0

                                            a = acceleration of gravity = 9.81 m/s^2

THIS BECOMES

0 = 2 + 0 * t  - 1/2 ( 9.81)t^2

  to show t = .639 seconds to hit the ground

During this .639 seconds it flies horizontally at 10 m/s for a distance of

      10 m/s * .639 s = 6.39 m

Diagram A shows two laser beams, one blue and one red, that are incident on a mirrored surface. Diagram B shows two laser beams, one blue and one red, that are incident on a transparent block of glass then The blue and red laser beams reflect at the same angle, and they refract at different angles.

A laser emits a very focused beam of light that can be used in a variety of equipment and technologies. Light Amplification by Stimulated Emission of Radiation is what the letters in the term laser stand for. The word "laser" is an acronym for "Light Amplification by Stimulated Emission of Radiation." In a laser beam, the light waves are "coherent," which means they are all traveling at the same speed and wavelength. To do this, excited electrons are passed through an optical "gain medium," which could be a solid substance like glass or a gas.

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The editing technique is used to indicate a passage of time, usually symbolizing a sunset and sun rise is montage .

Montages are one of the most common techniques used to show the passage of time. In motion pictures, the editing technique of assembling separate pieces of thematically related film and putting them together into a sequence.

A Montage is a series of video messages sent privately from a bunch of people who really care about you, and combined into one surprise, video gift. Most Montages are 10-30 minutes long. The longest Montage ever was 1 hour and 12 minutes long

Montages enable filmmakers to communicate a large amount of information to an audience over a shorter span of time by juxtaposing different shots, compressing time through editing, or intertwining multiple storylines of a narrative. The word “montage” derives from French — meaning “assembly” or “editing.”

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A 24. 0-mw (milli-watts) laser puts out a narrow cylindrical beam 2. 00 mm in diameter. The average rms electric field is 2.82N/C.

The Average rms Electric Field is the square root of the mean value of electric field.

Given:

Power of beam = 24mW = 0.024W

Diameter of beam = 2mm = 0.002m

Radius of beam = 1mm = 0.001m

∴ Area Of beam = 22/7 × (radius)²

⇒ Area Of beam = 22/7 × (0.001)²

⇒ Area Of beam = 3.14 m²

∴ Intensity of Beam is the power per unit area where the beam spreads.

Intensity of Beam = Power / Area

⇒ Intensity of Beam = 0.024 / 3.14

⇒ Intensity of Beam = 0.075 W/m²

The average value of RMS for Electric field can be calculated by:

Erms = [tex]\sqrt{Intensity / (speed of light) (permmitivitty of medium)}[/tex]

Erms = 0.075 / 3 × 10⁸ × 8.85 × 10⁻¹²

Erms = 2.82 N/C

Hence, The average value of rms electric field is 2.82N/C

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The Potential at the origin due to the four point charges located at  (0, 2), (0, -2), (2 , 0), and (-2 , 0) will be - [tex]45\times10^{4}[/tex] volts.

We have four point charges, each of charge [tex]2.5\times10^{-5}[/tex] C, are located on the x - axis and y - axis, one at each of the locations (0, 2), (0, -2), (2 , 0), and (-2 , 0).

We have to calculate the potential at the origin O(0,0).

The Electric field potential due to point charge ' q ' at a distance ' r ' meters apart is -

[tex]V(r) = \frac{1}{4\pi\epsilon_{o} } \frac{q}{r}[/tex]

Now, in the question given to us -

q = [tex]2.5\times10^{-5}[/tex]

Let us label the four points as - A (0, 2), B (0, -2), C (2 , 0), and D (-2 , 0).

Now, the potential due to charge located at point A will be -

[tex]V_{A} = \frac{1}{4\pi\epsilon_{o} } \frac{q}{r}\\V_{A} = \frac{1}{4\pi\epsilon_{o} } \frac{q}{r}\\V_{A} = 9\times10^{9}\times\frac{2.5\times10^{-5} }{2} \\V_{A} = 11.25\times10^{4}[/tex]

Now, the distance of the center from each point will be same = 2 m.

Hence, the potential due to each charge at the origin will be -

[tex]V_{A} =V_{B} =V_{C} =V_{D} = 11.25\times10^{4}[/tex]

Since, the potential is a scalar quantity, we can add the potential due to each charge using simple addition -

[tex]V_{A} +V_{B} +V_{C} +V_{D} = 4\times11.25\times= 45\times10^{4}[/tex] Volts

Hence, the potential at the center will be - [tex]45\times10^{4}[/tex] volts.

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The work done by the force field f! (x, y) = x sin(y)i + yj on a particle that moves along the parabola y = x2 from (−1, 1) to (2, 4) will be  15/2 + 1/2 cos1 -1/2 cos4

Work done on a body is equal to the increase in the energy of the body, for work transfers energy to the body. If, however, the applied force is opposite to the motion of the object, the work is considered to be negative, implying that energy is taken from the object.

The units in which work is expressed are the same as those for energy, for example, in SI (International System of Units) and the metre-kilogram-second system, joule (newton-metre)

Equation of parabola :  y = [tex]x^{2}[/tex]

dy = 2x dx

f(x , y) = x sin (y) i + y j

          =  [tex]\int\limits^2__{} \, -1[/tex] [tex]\ {x sin (x^{2} )} \, dx[/tex] +  [tex]\int\limits^2__{} \, -1[/tex] 2x . [tex]x^{2}[/tex] dx

          =  [tex]\int\limits^2__{} \, -1[/tex] [tex]\ {x sin (x^{2} )} \, dx[/tex] +  [tex]\int\limits^2__{} \, -1[/tex] 2 [tex]x^{3}[/tex] dx

          =   1/2[tex]x^{4}[/tex] * ( - 1/2 cos [tex]x^{2}[/tex] ) + [tex]x^{4}[/tex] / 2

          =   8 - 1/2 + (-1/2 cos 4 + 1/2 cos 1)

          =   15/2 + 1/2 cos1 -1/2 cos4

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Protein-energy malnutrition is the condition linked to poverty, insufficient food intake, poor food quality, unsanitary living conditions, and improper feeding of infants and young children. The correct option is 4.

Protein-energy malnutrition (PEM) is a type of malnutrition that occurs when there is a deficiency in both protein and energy (calories) intake. It is often associated with impoverished and disadvantaged populations who lack access to an adequate and balanced diet. PEM can lead to severe health consequences, including stunted growth, weakened immune system, and increased susceptibility to infections and diseases.

Efforts to combat PEM include improving food security, promoting better nutrition practices, and enhancing access to essential nutrients through supplementation and fortification of food. Addressing poverty, improving living conditions, and ensuring proper healthcare and education are also crucial in preventing and treating protein-energy malnutrition in vulnerable populations.

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When both glucose and lactose are present in the media in which E. coli is growing the preferred carbon source of is glucose.

About lac operon:

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Answer:

total voltage is 9 V is the correct answer of given question

The Nebular theory explains the formation of our solar system from a mass of gas, ice, and dust particles.

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The resistivity comes out to be [tex]=800×10 { }^{ - 4} Ωm[/tex]

Given:

length,l=100vm or 1m

Area,A

Resistance,R

To find:

resistivity,ρ

ρ = RA/l

[tex] = \frac{400 \times 2 \times 10 {}^{ - 6} }{1} [/tex]

[tex] = 800 \times 10 {}^{ - 4} Ωm[/tex]

Thus,the resistivity comes out to be

Thus,the resistivity comes out to be [tex]=800×10 { }^{ - 4} Ωm[/tex]

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