number of slip systems has ___ on lattice resistance

Given data:

* The initial velocity of the rabbit is u = 0 m/s.

* The acceleration of the rabbit is,

* The time taken is t = 3 s.

Solution:

By the kinematics equation, the final velocity of the rabbit is,

Substituting the known values,

Thus, the velocity of the rabbit is 22.5 m/s.

Answer:

Explanation:

It means that while we live, we are obligated to get the most out of living. If we do not, then we are dying a spiritual death -- one that robs us of seeing hearing tasting everything that we can and experience everything we can.

If we fail to do that, we are spiritually dead, which means that we live a life without meaning. We are worse than being physically dead. We are like Zombies that take in nothing.

The complete question is

A 45-kg child sits on a 3.2-kg tire swing. The tension on the rope is 470 N. The tree branch sags and the child's feet rest on the ground. If the tension in the rope is reduced to 220 N, what is the value of the normal force being exerted on the child's feet?

Answer:

Therefore the Normal force is being exerted on the child's feet is 252.36( 250N).

Explanation:

We are given

mass of child = 45kg

mass of the tire = 3.2kg

g = 9.8 m/s^2

We have the first case in which the tire is in swing so tension in that case will be which is the resultant force.

Fr = Resultant force

Ft =  Tension force

Fg= Gravitational force

Fr = Fg + Ft

0 = -mg + Ft

Ft = mg

   = (45+3.2)*9.8

   = 48.2 * 9.8

Ft = 472.36N  ( which is close to 470)

In the second case the child is in the rest position, The resultant force will be zero.

Fr = Ft + Fn + Fg  ( Normal force is denoted by Fn )

0 = Ft + Fn + Fg

Fn =  -Fg -Ft

Fn = mg -Ft

    = 472.36 - 220

Fn  = 252.36N  ( close to 250N)

Therefore the Normal force being exerted on the child's feet will be 252.36N.  

Answer:

Summary of Method

In aqueous solution, unionized ammonia exists in equilibrium with ammonium ion and hydroxide ion. The

equilibrium constant for this reaction is a function of temperature and solution pH. Thus, if the equilibrium

constant is known for a particular temperature and the pH of the solution is also known, the fraction of unionized ammonia can be calculated. Then, if the total ammonium concentration is known from laboratory

analysis, the un-ionized ammonia concentration can be calculated.

It must be noted however that the concentration of un-ionized ammonia is also dependent on the ionic

strength of the solution. There is a slight decrease in the un-ionized ammonia fraction of total ammonia as the

ionic strength of the solution increases. A method to estimate un-ionized ammonia in saline waters is provided

in Appendix III.

Explanation:

Let's solve the problem by using conservation of momentum:

m1 u1 + m2 u2 = m1 v1 + m2 v2

where:

m1 = 3.5 g  is the mass of the blue marble

m2= 1.2 g is the mass of the red marble

u1 = 15 cm/s  is the initial velocity of the blue marble

u2 = 3.5 cm/s is the initial velocity of the red marble

v1 = 5.5 cm/s is the final velocity of the blue marble

We can find the final velocity of the red marble by re-arranging the equation and solving for v2 :

v2 = 1/m²(m1 u1 + m2 u2 - m1 v1)=

=1/1.2(3.5×15+1.2×3.5−3.5×5.5 )=31cm/s

In words, the R2 of 0.27 means that 27% of the variability in y (24-hour urinary Na) can be explained by x (estimated 24-hour urinary Na) obtained from casual urine specimens at one point in time.

The INTERSALT Study was designed to investigate the relationship between dietary sodium and blood pressure (hypertension) in populations worldwide.

The study included 10,079 men and women from 52 population samples in 32 countries. One of the goals of the study was to quantify the relationship between 24-hour urinary Na (y) and estimated 24-hour urinary Na (x) obtained from casual urine specimens at one point in time.

The investigators presented a simple linear regression of y on x, separately for men and women. The regression equation for men was: Y = 1.03x + 7.19, with R2 = 0.27, n = 1369.

The coefficient of determination, R2, is a statistical measure that represents the proportion of the variance for a dependent variable (y) that's explained by an independent variable (x) or variables in a regression model.

In this case, the R2 of 0.27 means that 27% of the variability in y (24-hour urinary Na) can be explained by x (estimated 24-hour urinary Na) obtained from casual urine specimens at one point in time. The remaining 73% of the variability in y is due to other factors that are not included in the regression model.

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With reference from the graph, the order in which the blocks are dropped onto the disk is shown a s: C, B, A.

A  graph can be described as as a pictorial representation or a diagram that represents data or values in an organized manner.

The graph is a graph of Angular speed of the disk vs time graph

From the graph,   the disk is initially spinning at a constant angular speed of ω0ω0.

Then, as blocks are deposited onto the disk, the graph displays three separate times where the angular speed changes.

The order in which the blocks are dropped onto the disk can be inferred from the graph: Block C is first dropped at location P1 on the disk and here  the angular speed of the disk begins to decrease.

Block B is then dropped onto the disk, at point P2 which  causes the angular speed of the disk to decrease much further.

Block A is dropped onto the disk last, at point P3 causing  the angular speed of the disk to decrease even further until it eventually reaches a constant value.

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Answer:

Electrical potential is measured in units called volts.

The mass of air in the room is 604.8 kg

The volume of air in the room is:

Volume = length × width × height

= 10 m × 12 m × 4 m

= 480 cubic meters

The mass of air in the room can be calculated using the density of air:

Mass = Density × Volume

= 1.26\(kg/m^3\) × 480 \(m^3\)

= 604.8 kg

Therefore, the mass of air in the room is 604.8 kg

The mass of air in a given space can be calculated by multiplying the density of the air by the volume of the space. The density of air at a given temperature and pressure can be found in reference tables or online sources. Once the density is known, the volume of the space can be measured using appropriate tools and the mass of the air can be calculated.

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Answer:thanks

Explanation:xixo

gv

Answer:

It is spinning, making the ball a little more airborn than the one that isn't spinning

Answer:

A spinning ball creates a Centrifugal Force because it is given the "energy" so to speak to spin. A ball that is not moving does not need any external energy to keep it still or, in other terms, at rest.

Explanation:

The female skater moves backward at a speed of 3 m/s. The post-impulse speed of the male skater is 2.08m/s.

Momentum (linear) along, say, the x-axis is:

p=mv

so we have for the 2 skaters system:

\(p_before = p_after\)

(45.0)+(65.0)= (45*3)+(65*v)

v= - 135/65= -2.08m/s

Speed in physics refers to how fast an object is moving. It is a scalar quantity that only takes into account the magnitude of the velocity of the object, not its direction. The speed of an object can be calculated by dividing the distance it travels by the time it takes to travel that distance. The SI unit of speed is meters per second (m/s), but other units such as miles per hour (mph) or kilometers per hour (km/h) can also be used.

Speed can be constant, meaning the object is moving at a steady rate, or it can be changing, meaning the object is accelerating or decelerating. Acceleration is the rate at which an object's speed changes over time, and it is typically measured in meters per second squared (m/s^2).

The concept of speed is fundamental to many areas of physics, including mechanics, thermodynamics, and electromagnetism. It is also a critical component of everyday life, influencing how we travel, communicate, and interact with the world around us.

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When you change the thickness of the wire in a circuit, option B. the resistance (R) and current (I) will also change, but the voltage (V) will remain constant.

The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area (thickness). As the thickness of the wire changes, the cross-sectional area changes, which in turn affects the resistance. Thicker wires have a larger cross-sectional area, resulting in lower resistance, while thinner wires have a smaller cross-sectional area, resulting in higher resistance. Therefore, changing the thickness of the wire will cause a change in resistance.

According to Ohm's Law (V = IR), the voltage (V) in a circuit is equal to the product of the current (I) and the resistance (R). If the voltage is kept constant, and the resistance changes due to the thickness of the wire, the current will also change to maintain the relationship defined by Ohm's Law. When the resistance increases, the current decreases, and vice versa.

However, it's important to note that changing the thickness of the wire will not directly affect the voltage. The voltage in a circuit is determined by the power source or the potential difference applied across the circuit and is independent of the wire thickness. As long as the voltage source remains constant, the voltage across the circuit will remain constant regardless of the wire thickness. Therefore, the correct answer is option B.

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The driver reaction times of oncoming vehicles would need to be shortened to an average of approximately 1.018 seconds for the probability of an accident to equal 0.20.

Practice Problem 5.2 refers to a situation where a driver needs to react within 1 second to avoid an accident, but the actual reaction time is normally distributed with a mean of 1.25 seconds and a standard deviation of 0.2 seconds.

To calculate the required shortening of driver reaction times for the probability of an accident to equal 0.20, we can use the inverse normal distribution function.

First, we need to find the z-score corresponding to a probability of 0.20. Using a standard normal distribution table or calculator, we find that the z-score is approximately -0.84.

Next, we can use the formula for converting a normally distributed variable to a standard normal variable:

z = (x - μ) / σ

where z is the z-score, x is the value of the variable we want to convert, μ is the mean, and σ is the standard deviation.

We want to find the new mean reaction time (x) that corresponds to a z-score of -0.84 and keeps the probability of an accident at 0.20:

-0.84 = (x - 1.25) / 0.2

Solving for x, we get:

x = -0.84 * 0.2 + 1.25 = 1.018 seconds

Therefore, the driver reaction times of oncoming vehicles would need to be shortened to an average of approximately 1.018 seconds for the probability of an accident to equal 0.20.

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Consider the conditions in Practice Problem 5.2. How short would the driver reaction times of oncoming vehicles have to be for the probability of an accident to equal 0.20?

Answer:

NO

Explanation:

I=mr^2 this means moment inertia depends upon mass and square of radius or distance.

These Milky Way companion galaxies are easily visible from dark locations in the Southern Hemisphere. Prime examples of erratic galaxies are the Large and Small Magellanic clouds (left and right, respectively).

In comparison to a rich cluster, the poor cluster typically has a slightly more erratic shape. A number of smaller galaxies orbit each major spiral. The Small and Large Magellanic clouds are the two most well-known examples of atypical galaxies.

When two galaxies collide, irregular galaxies frequently result. This unusual Cartwheel Galaxy was created when a tiny galaxy slid through the centre of a massive spiral galaxy.

Therefore, Rich clusters are other clusters that include hundreds to thousands of galaxies. A weak cluster can't cling to its members strongly because of its low bulk.

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Answer:

Explanation:

Answer:

In general, the concept of output work being less than input work does not align with the laws of physics, specifically the principle of conservation of energy. According to this principle, energy cannot be created or destroyed, but it can be transformed from one form to another. Therefore, the total amount of energy in a closed system remains constant.

When considering work, which is the transfer of energy through the application of force over a distance, the input work and output work should theoretically be equal if no energy is lost to other forms, such as heat or friction. However, in real-world scenarios, various factors can result in a decrease in output work compared to input work. Some possible reasons for this disparity include:

Inefficiencies: Real systems are not perfectly efficient, and energy losses can occur due to factors like friction, heat dissipation, electrical resistance, or mechanical limitations. These losses reduce the amount of useful work obtained from the input energy.

Energy conversion: If the input work is in one form of energy (such as electrical or chemical), and the output work is in a different form (such as mechanical), energy losses can occur during the conversion process. The efficiency of the conversion process determines the amount of output work obtained.

External forces: External factors, such as resistance or opposing forces, can require additional work to overcome, resulting in a decrease in net output work compared to the input work.

It's important to note that while output work can be less than input work in certain situations due to these factors, the total amount of energy remains conserved. Energy that is not converted into useful work is typically dissipated as waste heat or other forms of energy loss.

Answer:

The output work is always less than the input work because of friction.

Explanation:

Friction is a force that opposes the relative motion of two surfaces in contact. When a machine is used, frictional forces are created between the moving parts of the machine and the surfaces they rub against.

These frictional forces require some of the input work to be used to overcome them, which reduces the amount of work that is available to do the desired task.

The maximum tension the rope can have before it breaks is 200 N, the centripetal acceleration just before the rope breaks is equal to 200 N divided by the mass of the object.

To determine the centripetal acceleration just before the rope breaks, we need to consider the maximum tension in the rope and the mass of the object moving in a circular path.

The centripetal force required to maintain circular motion is provided by the tension in the rope. When the tension in the rope reaches its maximum value (200 N), it is equal to the centripetal force acting on the object.

The centripetal force (Fc) can be calculated using the following equation:

Fc = (mass) × (centripetal acceleration)

Given that the maximum tension in the rope is 200 N, we have:

Fc = 200 N

Let's assume the mass of the object is denoted by "m" and the centripetal acceleration is denoted by "ac".

Therefore, the equation becomes:

200 N = m × ac

Solving for the centripetal acceleration (ac), we have:

ac = 200 N / m

So, the centripetal acceleration just before the rope breaks is equal to 200 N divided by the mass of the object.

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a star is in a circular orbit around a supermassive black hole at the center of a distant galaxy, and the  from the central black hole to the star is 1000 AU and the star orbits once every 10 years.The mass of the black hole can be calculated using the formula: {eq}M = \frac{v^2 r}{G} {/eq}

Where, v = velocityr = radius of the orbitG = Gravitational constant{eq}G = 6.67 \times 10^{-11}\;m^3\;kg^{-1}\;s^{-2} {/eq}We have to convert 1000 AU to meters. 1 AU is equal to 149.6 × 10⁹ meters. So 1000 AU is equal to 149.6 × 10⁹ × 1000 meters. Therefore r = 149.6 × 10⁹ × 1000 meters = 1.496 × 10¹² distant , the velocity of the star, {eq}v = \frac{2 \pi r}{T} {/eq}Where, T is the period of the orbit.T = 10 years = 10 × 365 × 24 × 3600 = 315360000 seconds

So, {eq}v = \frac{2 \pi \times 1.496 \times 10^{12}}{315360000} {/eq} = 2.98 × 10⁴ m/sSubstituting the values of v, r, and G in the equation above, we get:{eq}M = \frac{(2.98 \times 10^4)^2 \times 1.496 \times 10^{12}}{6.67 \times 10^{-11}} {/eq}= 1.44 × 10⁴ solar massesTherefore, the mass of the black hole is 1.44 × 10⁴ solar masses (main answer).Explanation:In summary, to calculate the mass of a black hole, the formula M = v²r/G must be used.

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Directly proportional is: energy and frequency; Inversely proportional: wavelength and energy and frequency and wavelength.

(a) The wavelength and energy are inversely proportional to each other. This implies that as the wavelength of a wave increases, its energy decreases, and as the wavelength decreases,  energy increases.

(b) The frequency and wavelength are inversely proportional to each other. This implies that as  frequency of a wave increases, its wavelength decreases, and as frequency decreases, wavelength increases.

(c) Energy and frequency are directly proportional to each other. This implies that as frequency of a wave increases, its energy also increases, and as frequency decreases, energy decreases.

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Answer:

Explanation:

Plotting the original location of the helicopter before it flies 25 km north, it would be at the origin, (0,0) then after it flies north, the y vertex gains 25 points, so it would be (0,25)

After it flies east, the x coordinate gains 5 points, so it would now be (5,25)

After it flies south, the y coordinate loses or is subtracted by 5 points. so it would now be (5,20)

After flying west, the x coordinate loses 15 points. So the final vertex would be at (-10,20)

East = Right

West = Left

South= Down

North = Up

I used mainly mathematical methods by adding and subtracting the x and y coordinate values, but this could be graphed easily since I gave the coordinates just incase!

Hope this helps!

Answer:

Explanation:

D = Xf - X

D = 15km West - 25km North

D = -10km West

According to the given statement:

electrical circuit. The path that the entire current takes as it passes through each component makes up a series circuit. Branching is used in parallel circuits to divide the current and limit the amount that flows through each branch.

According to this definition, there are three principles of series circuits: all parts share the same current, resistances add up to a larger total resistance, and voltage drops add up to a larger total voltage. In the definition of a series circuit, all of these guidelines have their origin.

The impedance of a series circuit is

       Z₀² = R² + (X\(_L\)-X\(_C\)) ²

The initial resistance impedance shifts to when we add another resistor to the series

              Z² = (R + R₂) ² + (X\(_L\) - X\(_C\)) ²

Let's examine this sentence.

           Z = R + R₂

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Rub the glass rod with silk to make it positively charged and the silk negatively charged. Bring one metal sphere near the silk and the other near the glass rod to transfer charges and obtain two spheres with equal but opposite charges.

One method of giving the spheres exactly equal but opposite charges using the given materials is:

1. Rub the glass rod with the silk to transfer some electrons from the glass to the silk. The glass will become positively charged and the silk will become negatively charged.

2. Bring one of the metal spheres close to the charged silk. Electrons from the negative charge on the silk will repel the electrons in the metal sphere, causing some electrons to move away from the sphere and towards the stand. This leaves the sphere with a positive charge.

3. Bring the other metal sphere close to the charged glass rod. Electrons from the positive charge on the glass will be attracted to the metal sphere, causing some electrons to move from the stand to the sphere. This leaves the sphere with a negative charge.

4. Check the charges on the spheres using an electroscope or a pith ball. If the charges are not exactly equal and opposite, repeat steps 2 and 3 until the desired charges are obtained.

By following this method, the two metal spheres will be given exactly equal but opposite charges, with one sphere having a positive charge and the other sphere having a negative charge.

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Answer:

\(I=1.9A\)

Explanation:

From the question we are told that:

Meter distance \(d=0.0525\)

Magnetic field \(B=7.14*19^{-6}T\)

Generally the equation for Magnetic field B is mathematically given by

 \(B =\frac{\mu *I }{2* \pi r}\)

 \(7.14*19^{-6}T =\frac{ 1.26 *10^{-6} *I }{2* 3.142*0.0525}\)

Where

Constant\(\mu=1.26 *10^{-6}\)

 \(I=1.9A\)

Therefore

The Current through the wire is

 \(I=1.9A\)

Answer: 1.87

Explanation:

acellus

Answer:

preservation of habitat

Explanation:

i just took the test

What is the environmental advantage of technology?

Renewable energy has enabled us to capture this naturally occurring energy and convert it into electricity or useful heat through devices such as solar panels, wind and water turbines, which reflects a highly positive impact of technology on the environment.

What are the impact of technology on environment?

The environmental impact of technology does not end with the raw materials and where they have come from.

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The measurement of 13.2 ounces is 0.375 kg in SI units.

To convert 13.2 ounces to SI units, we need to convert it to kilograms since the SI unit for mass is kilograms (kg).

Given:

1 lb = 16 oz

1 kg = 2.2 lbs

First, let's convert 13.2 ounces to pounds:

13.2 oz * (1 lb / 16 oz) = 0.825 lbs

Now, let's convert pounds to kilograms:

0.825 lbs * (1 kg / 2.2 lbs) ≈ 0.375 kg

Therefore, the measurement of 13.2 ounces is approximately 0.375 kg in SI units.

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