1. If John can walk with a speed of 4 meters per second. How far will John walk if he walks for 1 hour and 30 minutes.

The Temperature at a process with ΔH and ΔS become spontaneous is 66.6k

Gibbs free energy  - It can be defined as that can be used to calculate the amount of work done performed by a closed system at constant temperature and pressure.

It's symbol is G.

Gibbs free energy equation is given as

ΔGΔH−TΔS

where

ΔG = Gibbs free energy.

ΔH =  Enthalpy change.

T = Temperature in Kelvin.

ΔS = Entropy change.

ΔH= 20kJ = 20000J

ΔS= 300J/K

if ΔG<0, process is spontaneous

if ΔG>0, process is non spontaneous

if ΔG=0, process is in equilibrium

To find the temperature at which the given reaction becomes spontaneous, the minimum T value for which we obtain a negative value of the Gibbs free energy change is

ΔH−TΔS > 0

T > ΔH/ΔS

We have ΔH=20kJ=20000J

ΔS= 300J/K

T > 20000/300

T> 66.6K

The Temperature at a process with ΔH and ΔS become spontaneous is 66.6k

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The final pressure is 6.96 atm.

We know that in an adiabatic process,

[tex]p_{1} V_{1} ^{gamma}[/tex] = [tex]p_{2} V_{2} ^{gamma}[/tex]

where,

p = Pressure

V = Volume

Gamma = Isentropic expansion factor

Given that,

[tex]p_{1}[/tex] = 1 atm

γ = 1.4 ( Assuming the air as an ideal gas )

[tex]V_{2}[/tex] = [tex]V_{1}[/tex] / 4

[tex]V_{1}[/tex] / [tex]V_{2}[/tex]  = 4

[tex]p_{1} V_{1} ^{1.4}[/tex] = [tex]p_{2} V_{2} ^{1.4}[/tex]

[tex]p_{2}[/tex] = 1 * [tex]( 4 )^{1.4}[/tex] = 6.96 atm

An adiabatic process is a thermodynamic process without the involvement of heat. Usually it takes place in an insulated box.

Therefore, the final pressure is 6.96 atm

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The Industrial Revolution led to the creation of jobs in human resources because more people were going to work on farms and in small shops and is therefore denoted as option A.

This is referred to a period which experienced a change from a handicraft economy to one which was dominated by a lot of technological innovations and productions.

This period led to the production of a lot of machines which helped to make jobs easier for the workers. It led to the increase in the way different goods and products were processed which led to the need to employ more people to run the operations.

Working on farms with equipment such s tractors, plough etc and the creation of shops to sell more processed goods is what led to the creation of jobs in human resources.

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A ball is launched into the air vertically. Because of air resistance, it takes less time to come down than to get up.

The forces that oppose an object's relative motion as it travels through the air are known as air resistance. These drag forces cause the object to move more slowly by acting in opposition to the speed of the incoming flow. Since drag is the part of the net aerodynamic force operating in the opposite direction to the direction of the movement, it differs from other resistance forces in that it directly depends on velocity.

Another way to describe it is to say that air resistance is caused by the leading surface of the object smacking with air molecules. Therefore, it can be claimed that the object's speed and cross-sectional area are the two most frequent variables that directly affect the quantity of air resistance. Thus, an increase in air resistance will be caused by both increasing speeds and cross-sectional areas.

In the context of aerodynamics and flight, the term "drag" refers to both the forces opposing and perpendicular to propulsion (i.e. lift). Depending on the circumstances, atmospheric drag can be either a positive or negative factor in astrophysics. When a spacecraft is returning to Earth from orbit, it both uses fuel and reduces efficiency during takeoff.

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The angular frequency of this motion is 5.46 rad/s.

The oscillation of spring is an example of Simple Harmonic Motion(SHM).

The general equation of an SHM is given by the formula.

X = Acos(wt)

Here A is the amplitude

ω is the angular frequency

T is the time

Comparing the above equation with the given condition,

X = 17.4 cm cos(5.46t)

A = 17.4 cm

ω = 5.46 rad/s

T = 1 s

Hence, the angular frequency of this motion is 5.46 rad/s.

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Answer:

Telescope, Probware, etc,..

Answer: probeware

Explanation:

the answer is probeware

if you mean by the options,

A. a ruler

B. a thermometer

C. a beaker

D. probeware

In the new orbit, the new perihelion will be closer to the sun and the aphelion will be unchanged.

In an orbiting celestial body, the point of the orbit where it is closest to the sun is called as Perihelion. In an orbiting celestial body, the point of the orbit where it is farthest to the sun is called as Aphelion.

Therefore when a spacecraft is orbiting the sun, and makes a maneuver to slow down at aphelion. then, in the new orbit the new perihelion will be closer to the sun and the aphelion will be unchanged.

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The power consumed by the razor is 100W.

According to Ohm's law,

Therefore Resistance R = [tex]V^{2}[/tex] / P

Given,

Power in North America P[tex]^{NA}[/tex] = 25 w

Voltage in North America V[tex]^{NA}[/tex] = 120 V

Voltage in Europe V[tex]^{EU}[/tex] = 240 V

Resistance in North America R[tex]^{NA}[/tex] = [tex]120^{2}[/tex] / 25 = 576 Ω

Resistance in Europe R[tex]^{EU}[/tex] = 576 Ω ( Assumed constant )

Power in Europe P[tex]^{EU}[/tex] = [tex]240^{2}[/tex] / 576 = 100 w

Ohm's law describes that the Current across a conductor is directly proportional to the Voltage across those two points.

Therefore power consumed by the razor is 100W.

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The derivative of the function is dy/dx = 4([tex]x^{4sinx}[/tex])[(sin x) / x + (cos x) (ln x)]

y = [tex]x^{4sin x}[/tex]

Taking the log of both sides:

ln y = sin x ln [tex]x^{4}[/tex] = (sin x) * (4 ln x) = 4 (sin x)(ln x)

Now differentiate both sides.  On the left you'll need to use the chain rule, and on the right you'll use the product rule:

1/y dy/dx = 4[(sin x) (1/x) + (cos x)(ln x)] = 4 [(sin x) / x + (cos x)(ln x)]

Multiply both sides by y

dy/dx = y * 4 [(sin x) / x + (cos x)(ln x)]

Since y = [tex]x^{4sinx}[/tex], we can rewrite this as:

dy/dx = [tex]x^{4sinx}[/tex] * 4 [(sin x) / x + (cos x)(ln x)]

dy/dx = 4[tex]x^{4sinx}[/tex] [(sin x) / x + (cos x)(ln x)]

Chain rule is the formula used to find the derivative of a composite function. Product rule is used to find derivative of products of two or more functions.

Therefore, the derivative of the function y = [tex]x^{4sin x}[/tex] is dy/dx = 4([tex]x^{4sinx}[/tex])[(sin x) / x + (cos x) (ln x)]

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The angular diameter of the Earth from the surface of the Moon is, between a=1.80226° (at apogee and the Earth is near the horizon) and a=2.02452° (at perigee and for an observer at the equator and when the Earth is at maximum altitude on the meridian)

We calculate the angular diameter of the Earth using the equation:

a=arctanD/d

where a is the angular diameter, D is the physical diameter of the Earth, and d is the distance from the Moon to the Earth.

The equatorial radius of the Earth is rE=6378.1km, the diameter is therefore

D=2×rE=12756.2.

   The mean distance to the Moon is d=384399km. This gives a (mean) angular diameter of a=1.90065°.

At Perigee the distance is d=362,600km. This gives an angular diameter of a=2.01482°

At Apogee the distance is d=405,400km. This gives an angular diameter of a=1.80226°

These Moon-Earth distances are as seen from the centre of the Moon. To calculate the diameter from the surface of the Moon, to subtract the position of the observer along the Moon-Earth axis.

If the observer is on the Moon's equator and the Earth is at zero-hour angle, the distance to the Earth needs to be subtracted by rM=1738.14km. Thus, we have;

 The mean distance to the Moon is d=384399−1738=382661km, giving an angular diameter of a=1.90928°.

At Perigee the distance is d=362600−1738=360862km. We have an angular diameter of a=2.02452°

At Apogee the distance is d=405400−1738=403662km. We have an angular diameter of a=1.81001°

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3000 N of friction exists between the bear and the tree.

How does friction force work?

Between solid surfaces, there are three basic types of friction:

Explanation:

The bear goes down at a constant speed, thus there is no acceleration. The forces add up to zero. As a result, upward friction and downward weight result in zero  

i.e.,

F-mg=0

F = mg

F = (300 kg)/10 [tex]m/s^{2}[/tex] (gravitational acceleration)

3000 N frictional force equals F.

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By conversion unit, 1 kilogram is equal to 10⁶ milligrams or 1000000 milligrams.

We need to know about a conversion unit to solve this problem. Kilogram is the SI unit for length but there are other units which able to determine the length such as gram and milligram. The conversion unit of milligram to kilogram is

1 mg = 10¯⁶ kg

1 mg = 0.000001 kg

From the question above, we know that the question is converting 1 kg to 1 mg, Hence

1 mg = 10¯⁶ kg

multiply by 10⁶

1 kg = 10⁶ mg

or we can write

1kg = 1000000 mg

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The average acceleration is 6.87 m/s^2.

It travels up to 52.25m in that time.

a) The motorcycle is initially at rest. this means that the initial velocity is Zero.

The average acceleration is caused by the kinematic equation of motion in terms of velocity, acceleration and time.

V = u + at

So substituting all the values, we have,

26.8 = 0 + 3.90*a

⇒ a = 26.8/3.90

⇒ a = 6.87 m/s^2

Hence the Motorcycle has the average acceleration 6.87 m/s^2

b) The distance travelled by the motorcycle in the time 3.9s can be found be the kinematic equation of motion in terms of position with constant acceleration.

S = ut + 1/2 at^2

Substituting all the values,

x = 0*3.9 + 1/2[(6.87)(3.90)^2]

x = 1/2[(6.87)(3.90)^2]

⇒ x = 52.25m

Thus, the motorcycle can travel upto 52.25m in that time.

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Given, Force = 390 N

Diameter of piston (1) = 4 cm

Diameter of piston (1) = 10 cm

now,

By using Pascal's Law which that states that " a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere", i.e. force per unit area is constant at any point in a confined incompressible fluid flow.

Mathematically, [tex]p=\frac{F1}{A1} = \frac{F2}{A2}[/tex]

where P is pressure at any point in a confined incompressible fluid

F1 and F2 = Force at point 1 and 2 respectively

A1 and A2 = Area of point 1 and 2

So,  [tex]F2 = \frac{F1}{A1} * A2[/tex]

[tex](A1 = \frac{\pi D1^{2} }{4} )\\(A2= \frac{\pi D2^{2} }{4} )[/tex]

[tex]F2 = 390 * \frac{\frac{\pi D2^{2} }{4} }{\frac{\pi D1^{2} }{4} }[/tex]

[tex]F2 = \frac{390}{4*4} * 10^{2}[/tex]

F2 = 2437 N

The magnitude of the force f2 is 2437 N

The given question is complete, complete question is...

"If a 390 N force F1 is applied to the piston with the 4 cm diameter, what is the magnitude of the force F2 that can be resisted by the piston with the 10 cm diameter? Neglect the weights of the pistons."

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The wavelengths in air is 8.8x10^-6 m for sounds in the maximum range of human hearing.

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

The following equation can be used to compute wavelength: wavelength = wave velocity/frequency. In most cases, wavelength is measured in metres. Greek letter lambda is used to represent wavelength, so = v/f.

speed = wavelength x frequency or wavelength = speed / freq

for f = 20Hz, wavelength = 343m/s / 2.0 x 10^1 Hz = 17.2m

for f = 20,000 Hz, wavelength = 343m/s / 20,000Hz = 0.017 m

39MHz = 39x10^6 Hz so wavelength = 343m/s / 39x10^Hz = 8.8x10^-6 m

Hence, the wavelengths in air is 8.8x10^-6 m

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We connect multiple batteries in series in order to get the biggest possible voltage.

Series connection

A circuit is set to be connected in series when there is same flow current through all the component in the circuit.

There is only one path for current to flow.

Parallel connection

A circuit is said to be connected in parallel when all the components are connected across each other's lead.

If we connect two batteries in series then the two batteries add up their voltage. And we have the combined voltage. (as shown in image)

series means connecting one anode to the another cathode of next.

similarly if batteries placed in parallel then the voltage in circuit is same as of individual battery.

We connect multiple batteries in series in order to get the biggest possible voltage.

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Left of z = 0.49 and right of z = 2.05, the area underneath the standard normal curve is equal to 0.7081.

The horizontal axis is approached by the standard normal bend as it extends indefinitely both in directions without ever being touched by it. The center of the bell-shaped, z=0 standard normal curve. Between z=3 and z=3, almost the entire area underneath the standard normal curve is located.

Use the normal distribution's standard form to calculate probability. Since the standard normal distribution is indeed a probability distribution, the probability that a variable will take on a range of values is indicated by area of the curve between two points. 100% or 1 is the total area beneath the curve.

the region to the left of the standard normal curve,

z=0.49

To the right of,

z = 2.05

So,

The area will be:

= P[z < 0.49] + P[ z >2.05]

= P[z < 0.49] + 1 -  P[ z < 2.05]

= .6879 + 1 - .9798

= 0.7081

Left of z = 0.49 and right of z = 2.05, the area underneath the standard normal curve is equal to 0.7081.

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I understand that the question you are looking for is:

Find the area under the standard normal curve to the left of z = 0.49 and to the right of z = 2.05. Round your answer to four decimal places, if necessary.

The resistance will also be doubled when the device is made of same material and when heated to the same amount.

Resistance is defined as the opposition in the flow of current in an electrical circuit. It is measured in ohm. The electrical resistance of a conductor of unit cross-sectional area and unit length is known as Resistivity. It is represented by ρ.

The relation between resistance and resistivity is, ρ = RA/l . Here, R is Resistance , A is Area of wire and l is length of wire. Resistivity is directly proportional to the resistance. The resistivity of a material is doubled when heated a certain amount. So, for a same material heated to same extend the resistance will also be doubled.

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A car traveling at a steady speed of 60 mph on a curved road with a 400-foot radius experiences an acceleration of a=19.36 feet per second.

Acceleration is the rate of change in a moving object's speed and direction over time. When something moves faster or slower, it is considered to be accelerating. Motion on a circle accelerates even while the speed is constant because the direction is always changing.

Any change in an object's velocity causes an acceleration, whether it be an increase in speed (what most people refer to as acceleration), a decrease in speed (also known as a deceleration ), or a change in direction (called centripetal acceleration ).

Speed

V=60mph

V=60*1.4667

V=88 ft/s

Acceleration

a= v²/r

a=88²/400

a=19.36ft/s²

A car traveling at a steady speed of 60 mph on a curved road with a 400-foot radius experiences an acceleration of a=19.36 feet per second.

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A measure of central tendency called the mean can be a particularly biased or misleading measure of central tendency when there are a few extreme scores.

"The statistical metric that identifies a single value as representative of an entire distribution" is the definition of central tendency. It strives to give a precise account of all the facts. It is the lone value that best typifies or reflects the information gathered.

The mean, median, mode, and the midrange are the four indicators of central tendency. The arithmetic mean of the maximum and minimum values in a data set is used here to describe the midpoint or mid-extreme of a set of statistical data values.

A dataset's arithmetic mean (which is distinct from its geometric mean) is calculated by dividing all of the values by the total number of values. Due to the fact that the computation takes into account all values, it is the most widely used central tendency measure.

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You are looking at yourself in a plane mirror, a distance of 3 meters from the mirror. your brain interprets what you are seeing in the mirror as being a person standing 6 meters from you.

The plane mirror shows an exact replica of the real world. that means the distance of you from the mirror is the same distance as your reflection form the mirror at the opposite side of the mirror.

Thus, distance of image from the plane mirror is same as the distance of object (person) from the plane mirror but the image is formed behind the mirror.

Thereby we have v=u=3 m

Thus, distance between image and the person

is d = v + u = 3 + 3 = 6 m

Thus, the person is 6 meters away from the image.

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the momentum can be calculated by the formula p= mv here m is mass of the brick and v is the velocity so momentum is 1.6kg X 9.9 m/s= 15.85 kg m/s

momentum is the result of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction. According to Isaac Newton's second equation of motion, the force acting on the particle equals the time rate of change of momentum. According to Newton's second law, if a constant force is applied to a particle for a specific amount of time, the result of the force and the time (the impulse) is equal to the change in momentum. On the other hand, a particle's momentum represents the length of time needed for a consistent force to bring it to rest.

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The correct answer is 5.6 Newton is the force on the egg .

Using newtons 2 law of motion

force  = mass  * accelaration

now accelaration =10 m / s^2

mass = 0.56 kg

force  = 0.56 * 10

force  = 5.6 newton

Newton's second law of motion governs the behavior of objects when all available forces are not balanced. The second law states that an object's acceleration is determined by two variables: the net force acting on the object and the object's mass. The acceleration of an object is proportional to the net force acting on it and inversely proportional to its mass. The acceleration of an object increases as the force acting on it increases. The acceleration of an object decreases as the mass of the object increases.

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Yes, a friction force to the right acts on the furniture.

The force preventing solid surfaces, fluid layers, and material components from sliding past one another are known as friction. When surfaces in contact move past one another, the friction between the two surfaces transforms kinetic energy into thermal energy (that is, it converts work to heat). As demonstrated by the utilization of friction produced by rubbing pieces of wood together to start a fire, this feature can have dramatic effects. Every time there is motion with friction, such as when a viscous fluid is agitated, kinetic energy is transformed into thermal energy. Wear is a significant side effect of several types of friction that can result in deteriorated performance or component damage. The discipline of tribology includes friction.

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The statement domain for p1 will constitute for all those line sequences which can possibly be executed depending upon the inputted value of A. It can be stated as follows:

{ (1,2,3), (1,2,3,5,8,16,17), (1,2,3,5,6,13,16,17)}

In addition to the examination of the total study population, the DOMAIN statement also asks analysis of domains (subpopulations).

The variables that distinguish domains are known as domain variables and are named by the DOMAIN statement.

Both character and numeric domain variables are acceptable. Domain variables are treated as categorical variables by the technique.

Each level of a variable determines a domain in the research population if it appears in a DOMAIN statement by itself.

A domain is determined by every possible combination of levels of variables when two or more variables are connected by an asterisk (*). Within each of the domains that are established by the domain variables, the process does a descriptive analysis.

The levels of the categorical variables are based on the formatted values of the domain variables.

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A fluid's specific gravity is determined by comparing its density to the density of a standard reference fluid, often water.

13,580,1000 ≈ 13.6

Mercury is a highly heavy, dense metal that is silver-white and liquid at normal temperature. Because water has a density of 1.0 g/mL, and mercury has a density of 13.5 g/mL, it feels quite weighty for such a small amount of mercury.

Mercury also has a very high surface tension, which causes tiny mercury droplets to condense on glass to create virtually spherical beads. Liquid mercury can be used in thermometers like the lab thermometer below because it expands and shrinks predictably with temperature. However, due to the element's health risks, the usage of mercury thermometers has generally been discontinued.

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The maximum length of foil will be 6732.84 cm or 67.3284 m

To find the maximum length of the foil, the given datas are:

Width of roll of foil = 304 mm

Height or thickness = 0.019 mm

Density of foil = 2.7 g/cm³

Mass of foil = 1.05 Kg

Density is the substance's  mass per unit volume. It can be also described by measuring how the particles in the substances tightly packed together.

                              d = m/ v

v = length (l) × width (w) × height (h)

First of we will convert the Kg into gram and mm into cm.

For 1 Kg = 1000 g

1.09 × 1000 = 1090 g

For 1 cm = 10 mm

304 / 10 = 30.4 cm

0.019 / 10 =  0.0019 cm

Now we will put the values in formula:

d = m/ l× h× w

l = m / d × h× w

l = 1050 g / 2.7 g/cm³× 30.4 cm × 0.0019 cm

l = 1050 g/ 0.155952 g/cm

l = 6732.84 cm or 67.3284 m

The maximum length of foil will be 6732.84 cm or 67.3284 m

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Physics has made our lives comfortable because without physics there would be no modern life.

In the modern days before the invention of physics, the life was not as comfortable as today's world. Some basic examples, include controlling the living conditions. In colder days, you can warm yourself using a heater and in hotter days you can cool yourself using an air conditioner.

Physics along with other branches of science led the invention of all the equipment, gadgets, electric devices etc. These inventions makes life easier and comfortable.

Therefore, Physics has made our lives comfortable.

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Just beneath the surface of this region, the electric field is zero.

Charge density is a measure of the amount of electric charge present in a space per unit volume in one, two, or three dimensions, according to electromagnetism.

The quantity of electric charge per surface area or volume, respectively, is known as the linear surface or volume charge density.

Σ = q/A

The formula for surface charge density is = q/A, and the SI unit for surface charge density is coulombs per square meter (cm2). Assuming q is the charge and an is the area of the surface over which it flows

A two-dimensional surface having a positive electric charge is called a surface charge. This 2-D surface and surface are restricted by these electric charges.

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