Where on the moon do experts believe a chinese rocket stage crashed this week, possibly sending debris kilometers away?.

The magnitude of energy that is lost due to friction is 73.7Joules.

In order to accomplish work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is the quantitative attribute that does this. Energy is a preserved resource; according to the rule of conservation of energy, energy can only be transformed from one form to another and cannot be created or destroyed.

Computers, vehicles, communications, state-of-the-art medical technology, and many other things are all powered by energy. The demand for dependable and economical energy is especially pressing for emerging countries. It can be beneficial and even life-saving.

Energy required by the body is the kinetic energy

Kinetic Energy = 1 / 2 mv²

m = mass

v = velocity

For the 5.3kg moving at 6.6m/s

kE = 1/2 * 5.3 * 6.6²

KE = 1/2 * 5.3 * 43.56

KE = 115.71Joules

for the 5.3kg moving at 4m/s

KE = 42 joules

Amount of energy lost

= 115.71Joules - 42 joules

= 73.7 joule

Thus, the amount of Energy lost is73.7Joules.

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Answer:

C,C

Explanation:

1. I think the lens is a polarizer, so, during its rotation, the amount of light that passes through is reduced.

2. f=v/lambda

The speed is same.

lambda2 = (f1 / f2) * lambda

Lambda2 = ( 6.7 * 10^14 / 3.35 * 10^14 ) * 450nm = 900nm

\(1.50 \times 10^{22}\)  mercury atoms emit a photon during this one second of operation

The steps shown below can be used to resolve this issue:

Find the energy of a photon of light with a 253 nm wavelength. The formula is as follows:

E = hc/λ

where E denotes the photon's energy, h denotes Planck's constant (6.626 x  \(10^{-34}\) J s), c denotes the speed of light (2.998 x \(10^8\)m/s), and denotes the photon's wavelength in metres.

Inputting the values provided yields:

E = (6.626 x \(10^{-34}\) J s) x (2.998 x \(10^8\)m/s) / (\(253 \times 10^{-9}\) m)

E = 7.87 x \(10^{-19}\) J

Hence, a photon of light with a wavelength of 253 nm has an energy of 7.87 x\(10^{-19}\) J.

Count the number of photons the light emits in a second. The formula is as follows:

number of photons = energy of light / energy of one photon

Substituting the given values, we get:

number of photons = 11.8 J / \(7.87 \times 10^{-19}\) J

number of photons = \(1.50 \times 10^{22}\) photons

Therefore, the lamp emits \(1.50 \times 10^{22}\) photons in one second.

Find the quantity of mercury atoms that release a photon every second. The number of mercury atoms is equal to the number of photons released by the lamp since each photon represents the emission of one mercury atom:

number of mercury atoms = number of photons

number of mercury atoms = \(1.50 \times 10^{22}\)  atoms

As a result, during one second of operation, the low-pressure mercury-vapor lamp emits \(1.50 \times 10^{22}\) mercury atoms.

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The availability of the a galactic nucleus inside a galaxy experiencing starbursts can slow or stop the starburst process.

Due to "increasing financial concerns," Mars Wrigley quietly pulls Starburst candies from grocery shelves throughout Australia. An popular Australian lollipop brand got dropped by a US confectionery business after one social media user noticed her favorite delicacy was inexplicably gone while looking for it.

22 years after being renamed, Starburst will become Opal Fruit, according to a statement from the candy's manufacturer, Mars. Stores including Poundland, B&M, Home Bargains, Iceland, Savers, and others will sell the goods for fans to purchase.

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The minimum volume of the slab must be 0.007 L for the woman to stand on it without getting her feet wet.

We can solve this problem using the formula:

V = m/ρ

where V is the volume of the slab, m is the mass of the woman, and ρ is the density of water.

Assuming that the woman's feet exert a pressure of 1 atm on the water, the pressure at the bottom of the slab must be greater than 1 atm to support her weight without breaking the surface of the water. Using the formula for pressure:

P = ρgh

where P is the pressure, ρ is the density of water, g is the acceleration due to gravity, and h is the depth of the slab beneath the surface of the water. Setting P equal to 1 atm, we can solve for h:

1 atm = ρgh

h = 1 atm/(ρg)

Substituting in the values for ρ and g, we get:

h = 1 atm/(1000 kg/m³ * 9.81 m/s²) = 0.00010197 m

The minimum depth of the slab must be greater than this value to prevent the woman's feet from getting wet. Assuming that the slab is rectangular with a length and width equal to the average shoe size of a woman (about 0.26 m), we can solve for the volume:

V = lwh = 0.26 m * 0.26 m * 0.00010197 m = 0.000006769 m³

Rounding to one significant figure and converting to liters, the minimum volume of the slab is:

V = 0.007 L

Therefore, the minimum volume of the slab must be 0.007 L for the woman to stand on it without getting her feet wet.

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The recommended amount of daily physical activity for people who struggle with weight management is b. 30-60 minutes. This can include a combination of moderate-intensity aerobic activity and strength training exercises. It is important to consult with a healthcare professional to determine an appropriate exercise plan for individual needs and limitations.

The recommended amount of daily physical activity for people who struggle with weight management is: a. 60-90 minutes.

This duration of physical activity can help individuals with weight management by burning calories and improving overall health.

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The recommended amount of daily physical activity for people who struggle with weight management is a. 60-90 minutes.

For individuals dealing with weight management issues, engaging in 60-90 minutes of moderate-intensity physical activity daily can significantly improve their ability to maintain a healthy weight.

This extended duration allows for increased calorie expenditure and supports long-term weight control.

Summary: For effective weight management, it is advisable to participate in 60-90 minutes of daily physical activity.

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Then force of attraction between the cation and anion can be calculated using Coulomb's law: Force = -7.592 x 10^-9 N.

The attraction of visiting a new place is the opportunity to explore, discover and learn something new. Visiting a new place often involves immersing oneself in new cultures and customs, experiencing different foods and cuisines, and taking in breathtaking views. By exploring a new place, one can gain a greater understanding of the past and present, and appreciate the diversity of people, cultures, and landscapes. Travelling to a new place also offers the chance to make new friends, learn new skills and create lasting memories. Visiting a new place can be a thrilling, eye-opening experience, and the memories created will last forever.

Then force of attraction betweena the cation and anion can be calculated using Coulomb's law:

Force = k * (Q1 * Q2) / r2

where k is Coulomb's constant (8.99 x 10^9 N*m²/C²), Q1 and Q2 are the charges of the cation and anion (2 and -2 in this case), and r is the distance between the two particles (2.5 nm).

Force = 8.99 x 10^9 N*m²/C² * (2 * -2) / (2.5 x 10^-9 m)²

Force = -7.592 x 10^-9 N

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Then force of attraction between the cation and anion can be calculated using Coulomb's law: Force = \(-7.592 \times 10^{-9} N.\)

The attraction of visiting a new place is the opportunity to explore, discover and learn something new. Visiting a new place often involves immersing oneself in new cultures and customs, experiencing different foods and cuisines, and taking in breathtaking views. By exploring a new place, one can gain a greater understanding of the past and present, and appreciate the diversity of people, cultures, and landscapes. Travelling to a new place also offers the chance to make new friends, learn new skills and create lasting memories. Visiting a new place can be a thrilling, eye-opening experience, and the memories created will last forever.

Then force of attraction between a the cation and anion can be calculated using Coulomb's law:

\(Force = k \times (Q1 \times Q2) / r^2\)

where k is Coulomb's constant (\(8.99 \times 10^9 N\times m^2/C^2)\), Q1 and Q2 are the charges of the cation and anion (2 and -2 in this case), and r is the distance between the two particles (2.5 nm).

\(Force = 8.99 \times 10^9 N\times m^2/C^2 \times (2 \times -2) / (2.5 \times 10^{-9} m)^2\\Force = -7.592 x 10^{-9} N\)

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Answer:

very complex

Explanation:

The answer is D very complex

Answer:

at t=0  , V = 5    so it's 5 m/s

Explanation:

it is 5. 5 is the answer.

The statement is "if the national output cannot be increased unless the productive capacity or potential GDP increases, the aggregate supply curve is" vertical.

This vertical curve indicates that the total quantity of goods and services produced in an economy is solely determined by its productive capacity or potential GDP, and changes in price levels have no effect on it.

When potential GDP increases, aggregate supply increases and the AS curve shifts rightward. The potential GDP line also shifts rightward. Short-run aggregate supply changes and the AS curve shifts when there is a change in the money wage rate or other resource prices.

The aggregate demand curve shifts to the right as the components of aggregate demand—consumption spending, investment spending, government spending, and spending on exports minus imports—rise. The AD curve will shift back to the left as these components fall.

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To determine which choice is better, we need to calculate the present value (PV) of the costs associated with each lightbulb.

Let's start with the incandescent bulb. The cost of the bulb is $0.50, and it lasts for three years. Each year, it uses $0.75 of electricity. The discount rate is 12%.

To calculate the present value of the electricity cost for each year, we can use the formula

PV = C / (1 + r)^t,

where C is the cost, r is the discount rate, and t is the number of years. Plugging in the values, we have:

PV = $0.75 / (1 + 0.12)^1 + $0.75 / (1 + 0.12)^2 + $0.75 / (1 + 0.12)^3

Calculating this gives us a present value of $1.89 for the electricity cost.

Next, let's calculate the present value of the LED bulb. The cost of the bulb is $4, and it lasts for eleven years. Each year, it uses $0.20 of electricity.

Using the same formula as before, we can calculate the present value of the electricity cost for each year:

PV = $0.20 / (1 + 0.12)^1 + $0.20 / (1 + 0.12)^2 + ... + $0.20 / (1 + 0.12)^11

Calculating this gives us a present value of $1.18 for the electricity cost.

Now, we can compare the present values of the costs for each lightbulb. The incandescent bulb has a present value of $1.89, while the LED bulb has a present value of $1.18.

Since the present value of the LED bulb is lower, it is the better choice. The LED bulb is more cost-effective in the long run, even though it has a higher upfront cost. It lasts longer and uses less electricity, resulting in lower overall costs.

In conclusion, the LED lightbulb is the better choice based on the calculations of present value. It offers long-term savings due to its longer lifespan and lower electricity usage.

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Answer:2.67

Explanation:

Nun

Explanation:

derive its name from a Native American word meaning wild onion

Answer's

Explanation's

Answer:

If you ring the doorbell and no one opens the door, you'll infer that no one is home rather than continuing to ring the doorbell to an empty house. Being able to understand this and look for another solution is another example of mental flexibility.

Explanation:

Given

Procedure

Dimensions of v are L/T

The answer would be:

The letter a is multiplying to one dimension in time, so it must be a value of distance over two of time. LT^(-2)

The letter b is in the numerator so it must be a distance dimension. L

The letter c is being operated as a subtraction in the denominator so it must be time T

The steepest stable slope that an unconsolidated material, such as dry sand or gravel, can maintain is determined by the material's angle of repose.  Overall, the angle of repose is the key factor in determining the steepest stable slope for unconsolidated materials.

The determined by the interplay between the forces acting on the material, including gravity and friction. The angle of repose is affected by a variety of factors, such as the particle size and shape, the moisture content, and the presence of any binding agents, such as clay or organic matter. Shear stress and shear strength are related to the ability of a material to resist deformation under load and are important factors in determining the stability of slopes composed of consolidated materials such as rock or soil. Cohesion, or the force that binds particles together, is also an important factor in slope stability, but it is less significant in unconsolidated materials. Overall, the angle of repose is the key factor in determining the steepest stable slope for unconsolidated materials.

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Oscillatory frequency is the number of complete oscillations, cycles or vibrations of a system that occur in one second. It is measured in hertz (Hz) and is the reciprocal of the period of oscillation.

The oscillatory frequency (f) of a vibrating stretched wire in SHM is given by:

f = 1/T

where T is the period of vibration.

We know that 1000 cycles of vibration take 2.00 seconds. Therefore, the period of vibration (T) is:

T = time taken for 1000 cycles / number of cycles

T = 2.00 s / 1000 = 0.002 s

Substituting this value of T in the formula for frequency, we get:

f = 1/T = 1/0.002 s = 500 Hz

Therefore, the oscillatory frequency of the vibrating stretched wire is 500 Hz and its period is 0.002 s.

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The number of full oscillations, cycles, or vibrations of the a system that take place in a second is known as the oscillatory frequency. It is the inverse of the oscillation's period and expressed in hertz (Hz).

According to SHM, the oscillation rate (f) of a stretched wire in motion is given by:

f = 1/T

where T is the period of vibration.

We know that 1000 cycles of vibration take 2.00 seconds. Therefore, the period of vibration (T) is

T = time taken for 1000 cycles / number of cycles

T = 2.00 s / 1000 = 0.002 s

Substituting this value of T in the formula for frequency, we get:

f = 1/T = 1/0.002 s = 500 Hz

As a result, the vibrating strained wire has an oscillation frequency of 500 Hz and a period of 0.002 s.

It is the amount of oscillations in a single time unit, such as one second. A pendulum which takes 0.5 second to complete one full oscillation does have a frequency of one oscillation every 0.5 second, or two oscillations per second.

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Answer:

Explanation:

In this problem we are required to find the potential energy possessed by the television

Given data

mass of television m = 15 kg

height  added above the ground, h= 1-0.3 = 0.7 m

acceleration due to gravity g = 9.81 m/s^2

apply the formula for potential energy we have

P.E= m*g*h

P.E = 15*9.81*0.7 = 103 Joules

Charged particles are fundamental to the behavior of electric currents, electric circuits, and resistance. An electric current is the flow of charged particles, typically electrons, through a conductor.

The flow of charged particles generates an electric field that induces a potential difference, or voltage, across the conductor.Electric circuits are constructed by connecting conductors and electrical components, such as resistors, capacitors, and inductors, in a specific configuration. The arrangement of the components determines how the current flows through the circuit.

The flow of current through the circuit depends on the resistance offered by the components in the circuit and the potential difference across the circuit.Resistance is the property of a conductor that opposes the flow of current. The resistance of a conductor is proportional to the number of charged particles in the conductor, the length of the conductor, and the cross-sectional area of the conductor. The resistance can also be affected by the temperature of the conductor and its material properties.

In summary, charged particles are responsible for generating electric currents that flow through electrical circuits. The behavior of the currents is determined by the arrangement of the components in the circuit and the resistance offered by the conductors and components. Resistance is a fundamental property of a conductor that opposes the flow of charged particles and can be affected by various factors.

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Answer:

im postive its D) loudspeaker

Answer:

foam wall

Explanation:

ap3x

Answer:

The initial vertical velocity is the vertical component of the initial velocity: v0y=v0sinθ0=(30.0m/s)sin45°=21.2m/s.

Explanation:

Time taken by arrow to reach height point is 2.2 seconds

Given:

Initial velocity of arrow = 22 m/s

Find:

Time taken by arrow to reach height point

Computation:

We know that, highest point stands when final velocity is 0 m/s

So,

Final velocity = 0 m/s

Gravitational acceleration = 10 m/s²

So,

v = u + at

0 = 22 + 10(t)

10t = -22

t = -22 / 10

t = -2.2 second

Time taken = 2.2 seconds

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Different measurement scales, such as ratio scale, equal-interval, rank-order, and nominal, are used in many disciplines, including statistics and the social sciences.

A. Letters of the alphabet:

Nominal: Without any intrinsic order or numerical value, the letters of the alphabet indicate categories or labels.

Discrete: Each letter is unique and cannot be divided into more compact parts.

B. Time of day:

Equal-Interval: A continuous scale with equal gaps between each unit (such as minutes or seconds) is what the term "time of day" represents.

Continuous: Any fractional value between units is possible when measuring time as a continuous variable (for example, 12:15, 12:30, or 12:45).

C. Medals Won in the Olympics:

Rank-Order: Olympic medals can be rated according to level of accomplishment (for example, gold, silver, and bronze).

Discrete: The total number of medals earned cannot be divided further because it is a whole number.

D. Percent score from a memory test:

Ratio Scale: A score of 50% is half of a score of 100%, for example, and percentage scores from memory tests can be compared using ratios because they have a meaningful zero point.

Continuous: Percent scores allow for fractional values and can range from 0 to 100.

E. Number of teen pregnancies in San Clemente:

Ratio Scale: A scale with a meaningful zero point and the capacity to compare ratios can be used to calculate the number of teen pregnancies.

Discrete: Pregnancies are counted as a whole; they cannot be subdivided into smaller numbers.

F. G.P.A.:

Equal-Interval: A continuous scale with equal distances between each unit is represented by the GPA (for example, 2.0, 2.5, and 3.0).

Continuous: Any value within a range, including fractional values (like 3.75), can be used for G.P.A.

G. Food Grades at Restaurants:

Rank-Order: Restaurants may rate their food using a letter grading system (A, B, C, etc.).

Discrete: There is no more subdividing the grades because they are separate groups.

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The probability that a voltage surge will not damage the television when two surge protectors are arranged in parallel is 99.75%.

The probability that a voltage surge will not damage the television when two surge protectors are arranged in parallel can be calculated using the formula P(A) = 1 - P(A') where P(A) is the probability of an event occurring and P(A') is the probability of an event not occurring.

If we assume that each surge protector has a 95% chance of protecting the television from a voltage surge, then the probability of a surge protector not protecting the television is 5% or 0.05.

Using the formula, the probability that a voltage surge will not damage the television is:

P(A) = 1 - P(A')
P(A) = 1 - (0.05)(0.05)
P(A) = 1 - 0.0025
P(A) = 0.9975

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Answer:

A.synrhesis reaction

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The statement is false "as the period of a wave increases the frequency increases" because the period of a wave and its frequency are inversely related.

Period and frequency are fundamental concepts in understanding waves. They describe different aspects of wave motion.

The period of a wave is defined as the time it takes for one complete cycle of the wave to pass a given point. It is measured in units of time, such as seconds.

The frequency of a wave represents the number of complete cycles of the wave that occur in one second. It is measured in units of hertz (Hz), which is equivalent to cycles per second.

The relationship between period and frequency is inverse. Mathematically, they are related by the equation:

Frequency = 1 / Period

This means that as the period increases (i.e., it takes more time for one cycle to complete), the frequency decreases because there are fewer cycles occurring in a given time interval. Conversely, if the period decreases (i.e., it takes less time for one cycle to complete), the frequency increases because more cycles occur in the same time interval.

The relationship between period and frequency holds true for all types of waves, including electromagnetic waves (such as light) and mechanical waves (such as sound or water waves).

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Answer:

False

Explanation:

If i1/i0=4/5, the ratio of i2/i0 is 0.667 when applied across the resistor.

Resistor is defined as a two-terminal passive electrical device that uses electrical resistance as a circuit component. High resistance resistors will withstand a lot of electric current.

We can say that I1 / I0 = 4/5 , I1 = 4 and I0 = 5.

We know that V = IR So, I = V / R

Thus I0 = 5 V /1 so, V = 5

V = IR

5 = 4 x (Ru +Rr)

5 = 4 x (1 + Rr)

Rr = 0.25

So, for I2

V = I2 x R

V = I2 (Rr + Rr + Ru)

5 = I2 x (1.5)

I2 = 3.333

So, the ratio is I2 / I0 = 3.333 / 5 = 0.667

Thus, if i1/i0=4/5, the ratio of i2/i0 is 0.667 when applied across the resistor.

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