A 0.145-kg baseball is traveling to the left toward home plate with a véiocity of 40 m/s. After
getting hit by a bat, it travels 50 m/s to the right. What is the baseball's change in momentum?
(Hint: remember that the change in momentum is = Pfinal - Pinitial-)

Solving for d using the calculated values for t, we find that the distance from spacecraft at which spacecraft should turn on its rockets is approximately 8670.7 meters.

To determine the distance from spacecraft at which spacecraft should turn on its rockets, we need to consider the motion of each spacecraft as it slows down.

Let's call the time elapsed from the moment spacecraft turns on its rockets until it comes to a complete stop t1. The initial velocity of spacecraft is 154.5 m/s and it slows down at a rate of 17.1 m/s^2, so its velocity after time t1 is given by:

v1 = 154.5 m/s - 17.1 m/s^2 * t1

The distance traveled by spacecraft during this time can be calculated as:

d1 = 154.5 m/s * t1 - (1/2) * 17.1 m/s^2 * t1^2

Next, let's call the time elapsed from the moment spacecraft turns on its rockets until it comes to a complete stop t2. The initial velocity of spacecraft is 133.0 m/s and it slows down at a rate of 22.2 m/s^2, so its velocity after time t2 is given by:

v2 = 133.0 m/s - 22.2 m/s^2 * t2

The distance traveled by spacecraft during this time can be calculated as:

d2 = 133.0 m/s * t2 - (1/2) * 22.2 m/s^2 * t2^2

Since the two spacecraft are moving towards each other, their relative velocity is the sum of their initial velocities:

v_rel = 154.5 m/s + 133.0 m/s = 287.5 m/s

The time elapsed until they meet, have zero relative velocity, and arrive at the same time, t, can be calculated as:

t = v_rel / (17.1 m/s^2 + 22.2 m/s^2)

The distance traveled by each spacecraft during this time can be calculated using the equations for velocity and distance given above. The total distance between the two spacecraft when they meet is the sum of these distances, so the distance from spacecraft at which spacecraft should turn on its rockets is given by:

d = d1 + d2 = (154.5 m/s * t - (1/2) * 17.1 m/s^2 * t^2) + (133.0 m/s * t - (1/2) * 22.2 m/s^2 * t^2)

Solving for d using the calculated values for t, we find that the distance from spacecraft at which spacecraft should turn on its rockets is approximately 8670.7 meters.

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Answer:

Net force is the vector sum of forces acting on a particle or body. The net force is a single force that replaces the effect of the original forces on the particle's motion. It gives the particle the same acceleration as all those actual forces together as described by Newton's second law of motion.

Explanation:

use this, but put it into you own words.

Answer:

The vector sum of forces acting on a particle or body is referred to as net force. The net force is a single force that replaces the effect of the original forces on the motion of the particle. It provides the particle with the same acceleration as all of the actual forces combined, as described by Newton's second law of motion.

°•°•°•°•°•°•°•°•°•°•°•°•°•°•°•°•

Hope it helps

Have a great day!!

Explanation:

Average speed=distance/time

=20/40

=0.5m/s

Answer:

A) Sue is lifting the bucket by a force of 49.035 newtons.

B) The bucket has an acceleration of 8.207 meters per square second on the Moon.

Explanation:

A) According to the First Newton's Law, a system is at equilibrium when it is either at rest or travelling at constant velocity. In this case, Sue must exert an external force on the bucket, whose magnitude is equal to the weight of the bucket but direction is opposed to it. By Second Newton's Law, we find that:

\(\Sigma F = F - m\cdot g = 0\) (1)

Where:

\(F\) - Lifting force, measured in newtons.

\(m\) - Mass of the bucket, measured in kilograms.

\(g\) - Gravitational acceleration, measured in meters per square second.

If we know that \(m = 5\,kg\) and \(g = 9.807\,\frac{m}{s^{2}}\), then the lifting force is:

\(F = m\cdot g\)

\(F = (5\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)\)

\(F = 49.035\,N\)

Sue is lifting the bucket by a force of 49.035 newtons.

B) By the Second Newton's Law, we have the following model:

\(\Sigma F = F-m\cdot g = m\cdot a\) (2)

Where \(a\) is the net acceleration of the bucket, measured in meters per square second.

If we know that \(F = 49.035\,N\), \(m = 5\,kg\) and \(g = 1.6\,\frac{m}{s^{2}}\), then the net acceleration of the bucket is:

\(a = \frac{F}{m} -g\)

\(a = \frac{49.035\,N}{5\,kg}-1.6\,\frac{m}{s^{2}}\)

\(a = 8.207\,\frac{m}{s^{2}}\)

The bucket has an acceleration of 8.207 meters per square second on the Moon.

(a) The force applied by Sue in lifting the bucket at a constant velocity is 49 N.

(b) The acceleration of the bucket when lifted on the moon is 8.2 m/s².

The given parameters;

The force applied by Sue in lifting the bucket at a constant velocity is calculated as;

\(F = m(a + g)\)

\(F= mg\\\\F = 5 \times 9.8\\\\F = 49 \ N\)

The acceleration of the bucket when lifted on the moon with the calculated force is;

\(F = m(a + g)\\\\a+g = \frac{F}{m} \\\\a = \frac{F}{m} - g\\\\a = \frac{49}{5} - 1.6\\\\a = 8.2 \ m/s^2\)

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A situation that involves the transfer of heat by means of convection must involve the exchange of fluid currents such as land and sea breezes.

Heat transfer by convection is a method of heat transfer by which heat is transferred between two bodies through through currents of moving fluids or gases.

The following are examples of heat transfer by convection;

Thus, a situation that involves the transfer of heat by means of convection must involve the exchange of fluid currents such as land and sea breezes.

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The spectrum observed from the Sun (or any star) would exhibit an absorption spectrum. This is because the outer gaseous atmosphere of the star absorbs specific wavelengths of light, resulting in dark absorption lines in the spectrum.

In the cooler, lower-density outer atmosphere, where white light from the star travels, some atoms or molecules in the atmosphere absorb photons with particular energy. In the spectrum, these absorptions show up as black lines at specific wavelengths. The specific set of absorption lines that each element or molecule generates results in a distinctive pattern that can be used to identify the elements that are present in the star's atmosphere.

The absorption spectrum offers insightful data on the chemical make-up and physical characteristics of the star. Astronomers can ascertain the elements present, their abundances, and other characteristics like the temperature, pressure, and velocity of the star's atmosphere by examining the absorption lines.

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The train went a distance of 6.25 meters. By applying the kinematic equation for motion with constant acceleration, we determined that the train traveled a distance of 6.25 meters during the 25 seconds of constant acceleration.

To find the distance traveled by the train, we can use the kinematic equation:

s = ut + (1/2)at²

Where:

s is the distance traveled

u is the initial velocity (which is 0 m/s since the train started from rest)

t is the time taken (25 s)

a is the constant acceleration (0.50 m/s²)

Substituting the values into the equation:

s = 0 × 25 + (1/2) × 0.50 × (25)²

= 0 + 0.50 × 0.50 × 625

= 0 + 0.25 × 625

= 156.25

= 6.25 m

Therefore, the train traveled a distance of 6.25 meters.

By applying the kinematic equation for motion with constant acceleration, we determined that the train traveled a distance of 6.25 meters during the 25 seconds of constant acceleration. The calculation involves considering the initial velocity, acceleration, and time.

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Answer:

Well okay do it what's your question ?

Answer:

yes

Explanation:

The distance between the second maximum of laser 1 and the third minimum of laser 2, is 0.36 m.

x1 = nλL / d

n=second maxima of laser 1

  = 2 * (d/20) *5.40 /d

  = 0.54 m

X2= (n+1/2)λL/d

n= 2= third minima of laser 2

  = 2.5 *(d/15)* 5.40 /d

  = 0.9m

distance del(y)max-min between second maximum of laser 1 and the third minimum of laser 2, on the same side of the central maximum =

0.9 -0.54 = 0.36 m

A laser is a device that produces light by optically amplifying electromagnetic energy through stimulated emission. The term "laser" stands for "light amplification by stimulated emission of radiation" (abbreviated "laser"). The first laser was created in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical research by Charles Hard Townes and Arthur Leonard Schawlow.

Because it emits coherent light, a laser is unique among other light sources. Laser cutting and lithography are made possible by spatial coherence, which makes it possible to focus a laser on a small area.

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Answer:

Normal = 33.95N

Friction = 19.6 N

Coefficient of friction = 0.58

Explanation:

We can represent the situation as follows:

First, we need to calculate the normal force. Since the box is not moving perpendicular to the incline, the normal force and the weight in that direction has to be equal, then

Fn = mgcos30

Fn = (4kg)(9.8 m/s²)cos30

Fn = 33.95 N

In the same way, the box won't slide when the force of friction is equal to the parallel component of the weight, so

Ff = mgsin30

Ff = (4kg)(9.8 m/s²)sin(30)

Ff = 19.6 N

Additionally, the friction force is equal to

Ff = μFn

Where μ is the coefficient of friction, so solving for μ and replacing the values, we get:

μ = Ff/Fn

μ = 19.6/33.95

μ = 0.58

Therefore, the answers are:

Normal = 33.95N

Friction = 19.6 N

Coefficient of friction = 0.58

The wavelength of a wave of the frequency is increased to 784 Hz will be 0.57 metre.

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The given data in the problem is;

f₁ is the  frequency of  a sound wave in case 1 = 196 Hz

\(\lambda\)₁ is the wavelength for the  = 1.76 meters.

f₂ is the  frequency of  a sound wave in case 2 = 784 Hz

\(\lambda_2\) is the wavelength for case 2=?

The speed of the wave for the same medium is same which is given as;

\(\rm v = \lambda_1 f_1 \\\\ \rm v = 1.76 \times 196 \\\\ \rm v =344.96\ m/sec\)

For case 2;

\(\lambda_2 = \frac{v}{f_2} \\\\ \lambda_2 = \frac{344.96}{784} \\\\ \lambda_2=0.44\)

Hence the wavelength of a wave of the frequency is increased to 784 Hz will be 0.57 metre.

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The induced current in the loop is around a. 0.46 A.

B = 4.0t Wb/m2 is the magnetic field, and A = (0.04 m)2 = 0.0016 m2 is the loop area. The magnetic flux rate of change across the loop is given by d/dt = d(BA)/dt = A dB/dt.

We obtain d/dt = 0.0016 * 4.0 = 0.0064 Wb/s when we substitute values.

Ohm's rule indicates that I = V/R, hence the induced current in the loop may be determined.

We get R = (5.8 x 10(-7) m) * (0.1 m) / ( * (0.005 m)2) 1.05 by substituting variables.

We obtain I = E/R 0.0061 A 0.46 A by substituting variables.

An electric current is the movement of charged particles such as electrons or ions across a conductor or space. It is defined as the rate of net charge flow across a surface. Charge carriers are particles that move and can be of many types depending on the conductor. Electrons passing via a wire are commonly used as charge carriers in electric circuits.

In semiconductors, they can be either electrons or holes. In an electrolyte, ions are the charge carriers, but in plasma, an ionized gas, ions and electrons are the charge carriers. The ampere, or amp, is the SI unit of electric current and is defined as the passage of one coulomb of electric charge over a surface per second.

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Answer:

Coring is a defect in an alloy (e.g., a copper nickel alloy) that occurs when a heated alloy is cooled too fast for diffusion to occur.

Explanation:

From low to high frequency, a wave's wavelength increases while its frequency decreases: 0.8 km, 5 m, 7 cm, 3 m, 460 nm, and 0.02 nm. The characteristic of a wave is known as its wavelength.

A wave's wavelength is the characteristic that determines how far identical locations between two succeeding waves are separated. The Greek letter lambda () is used to represent it. Thus, the wavelength is defined as the separation between one wave's crest or trough and the following wave.

The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency.

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Network administrators must ensure that their equipment is up-to-date and working correctly to minimize the risk of collisions in their networks.

Although the CSMA protocol requires stations to refrain from transmission when they sense the channel busy, collisions can still occur due to various reasons.

One reason is that the channel attenuation can weaken the signal to the point where stations may mistake it for noise, leading to collisions.

Another reason is the propagation delay, where a station may sense the channel idle even if another station has already started transmission, but the signal has not reached the other station yet.

In theory, collision should not happen in the CSMA protocol. However, in practice, it can still occur due to imperfect equipment, which may not sense the channel occupancy with 100% reliability. Therefore, network administrators must ensure that their equipment is up-to-date and working correctly to minimize the risk of collisions in their networks.

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Answer:

d. the rate at which work is accomplished.

Explanation:

The SI unit for Power is Joules

Given statement:

Would a person’s weight be the same or different on Mars as it is on Earth? What about his/her mass?

Explanation:

So an object or person on Mars would weigh 37.83% of its weight on earth Therefore, a person would be much lighter on mars.

Conversely, a person is 62.17% heavier on earth than on Mars.

Thus, the weight of the person on Mars would weigh 37.83% of its weight on Earth.

The period of a pendulum is affected by its length, mass, and the acceleration due to gravity (g). From this problem, we have measured the periods of several pendulums of different lengths.

We have to analyze the data by fitting to a power law, y = a L b. Let us begin by recalling the equation for the period of a pendulum:

\(T = 2π (L/g)^1/2\) Here, T is the period of the pendulum L is the length of the pendulum g is the acceleration due to gravity (which is to be determined).

Substituting the power law, y = a L b in the equation above, we get:

\(2π (L/(a/y^b))1/2 = T2π (y^b/a)^1/2 L^1/2 = Tg = 4π² L/aT²y^b\) Hence, the value of the acceleration due to gravity (g) can be inferred from the equation above as:

\(g = 4π² L/aT²y^b\)

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The specific heat capacity of water is 1 calorie per gram per degree Celsius. This means that 1 gram of water will absorb 1 calorie of heat for every 1 degree Celsius increase in temperature.

In this case, we have 32.0 grams of water that is heated from 25.0 degrees Celsius to 80.0 degrees Celsius. The change in temperature is therefore 80.0 - 25.0 = 55.0 degrees Celsius.

The amount of heat absorbed by the water is therefore 32.0 x 55.0 = 1760 calories.

To convert calories to joules, we can use the following conversion factor:

1 calorie = 4.184 joules

Therefore, the amount of heat absorbed by the water in joules is 1760 x 4.184 = 7374 joules.

Therefore, the answer to your question is that 32.0 grams of water absorbs 7374 joules of heat when it is heated from 25.0 degrees Celsius to 80.0 degrees Celsius.

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"The energy source that contributes to the greatest emissions of gases in the environment during the energy production process is fossil fuels." The correct option is B.

Fossil fuels, such as coal, oil, and natural gas, release large amounts of carbon dioxide (CO₂) and other pollutants into the atmosphere when burned for energy production. CO₂ is the primary greenhouse gas responsible for climate change and global warming. In addition, the extraction and transportation of fossil fuels also results in emissions of methane and other pollutants.

While nuclear energy (c) produces minimal emissions during energy production, the mining and processing of nuclear fuel can result in emissions of greenhouse gases.

Solar energy (d) and biofuels (a) are considered to be cleaner sources of energy, as they produce much lower emissions of greenhouse gases and other pollutants during energy production. However, the manufacturing and transportation of solar panels and biofuel crops can result in emissions of greenhouse gases.

Therefore, the energy source that contributes to the greatest emissions of gases in the environment during the energy production process is fossil fuels.

The given question is incomplete. The complete question is 'a. bio fuels

b. fossil fuels

c. nuclear energy

d. solar energy'

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Answer:

a) P = m1v1 + m2v2 P = (0.39 kg)(3.75i m/s) + (0.33 kg)(1.5j m/s) P = 1.4625i kg m/s + 0.495j kg m/s

b) vx = 2.025 m/s.

c) vy = 0.6875 m/s.

Explanation:

This is a story about two balls of clay, with masses m1 = 0.39 kg and m2 = 0.33 kg, who were madly in love with each other. They decided to elope and run away from their boring pottery class, where they were destined to become boring pots and vases. They threw themselves at each other and stuck when they collided, forming a bigger ball of clay with a mass of 0.72 kg. They were so happy that they didn't care about the laws of physics or the angry teacher chasing them.

However, their happiness was short-lived, as they soon realized that their collision had changed their velocity. Before they met, mass 1 had a velocity v1 = 3.75i m/s and mass 2 had a velocity of v2 = 1.5j m/s. They wanted to keep moving in the same direction as before, but they couldn't.

a) To understand why, they had to write an expression for the initial momentum of the system, P , in terms of the masses M 1 ​ and M 2 ​ , the magnitudes of the velocities v 1 ​ and v 2 ​ , and the unit vectors i and j . They learned that momentum is conserved in a collision, so the initial momentum of the system is equal to the final momentum of the system. The initial momentum of the system is given by:

P = m1v1 + m2v2

P = (0.39)(3.75i) + (0.33)(1.5j)

P = m1v1 + m2v2 P = (0.39 kg)(3.75i m/s) + (0.33 kg)(1.5j m/s) P = 1.4625i kg m/s + 0.495j kg m/s

P = 1.4625i + 0.495j kg m/s

b) To find the horizontal component of the final velocity v x ​ , in meters per second, after the collision, they had to divide the horizontal component of the initial momentum by the total mass of the system:

v x ​ = P x ​ /m

v x ​ = (1.4625)/(0.72)

vx = 2.025 m/s.

v x ​ = 2.03 m/s

c) To find the vertical component of the final velocity V y ​ , in meters per second, after the collision, they had to divide the vertical component of the initial momentum by the total mass of the system:

V y ​ = P y ​ /m

V y ​ = (0.495)/(0.72)

vy = 0.6875 m/s.

V y ​ = 0.69 m/s

They were shocked to discover that their final velocity was not in the same direction as their initial velocities. They had veered off course and were heading towards a wall. They tried to separate, but it was too late. They smashed into the wall and broke into pieces.

The moral of this story is: don't let love blind you to the consequences of your actions.

Answer:

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Answer:

you would fall forward due to inertia of motion..

No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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The term personality traits has to do with the essentials of a person. One of the five big  personality trait that affects people negatively if they have to much of it is neuroticism.

The term personality traits refers to those traits that characterize an individual. They have the capacity to affect a person positively or negatively.

One of the five big  personality trait that affects people negatively if they have to much of it is neuroticism.

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Answer:

Option A. 2NO + O₂ —> 2NO₂

Explanation:

To know which option is correct, it is important that we know what is synthesis reaction.

Synthesis reaction is a reaction in which two different elements or compound combine together to produce a new compound different from the two starting elements or compound. Example of such reaction is given below:

X + Y —> Z

Considering the options given in the question above, only option A comform to the definition of synthesis reaction. Thus, option A gives the correct answer to the question.

The correct answer is 14 T

B= Amplitude of wave's Magnetic field.

∪°=permeability of free space.

I= Intensity

\(I =B^2/2u\)

\(B=\sqrt{2uI}\)

Here

\(I= 8*10^7 w/m²\)

\(B=\sqrt{2/10/8×107}\)

\(B=\sqrt{2u/8*10^7}\)

\(B=\sqrt{2*4T* 10*7 *8*10^-^7}\)

B = 14-18 T ~ 14 T.

B= 14T

What is magnetic field?

A magnetic field is a vector field that describes the magnetic influence on charges, currents, and magnetic materials in motion. A moving charge inside a magnetic field is subjected to a force that is perpendicular to both its own velocity and the magnetic field. A changing magnetic field also has an effect on a variety of nonmagnetic materials by influencing the motion of their outer atomic electrons. Magnetic fields are formed around magnetised materials and are generated by electric currents similar to those found in computers. computers.

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