a ______ energy transition state of hydrogen abstraction by chlorine leads to a ______ reaction compared to bromine.

The ratio of their speeds before the collision is 0.

In an inelastic collision, the two objects stick together and move as one object after the collision. We can apply the principle of conservation of momentum to solve this problem.

Before the collision, the total momentum of the system is given by:

Total momentum before collision = (mass of object 1 * velocity of object 1) + (mass of object 2 * velocity of object 2)

Since both objects are initially at rest, their velocities are 0. Therefore, the total momentum before the collision is also 0.

After the collision, the two objects stick together and move with a common velocity. Let's denote this common velocity as V.

The total momentum after the collision is given by:

Total momentum after collision = (mass of combined object * velocity of combined object)

Since the two objects stick together, the mass of the combined object is the sum of the masses of the individual objects, i.e., (2m + 10m) = 12m.

The total momentum after the collision is therefore 12mV.

According to the principle of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision. Therefore:

0 = 12mV

Since the velocity V is zero (objects are at rest after the collision), we can conclude that the ratio of their speeds before the collision is:

Velocity of object 1 / Velocity of object 2 = 0

So, the ratio of their speeds before the collision is 0.

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A force of 15 Newton stretches a spring to a total length of 30 cm and an additional force of 10 Newton's stretches to a Spring of 5 cm, the natural length of the spring is 58.5 cm

To find the natural length of the spring, we can use Hooke's law, which states that the force applied to a spring is directly proportional to the displacement of the spring from its natural length.

Let's denote the natural length of the spring as L.

According to the problem, a force of 15 Newton stretches the spring to a total length of 30 cm. This means that the displacement of the spring is 30 cm - L.

Using Hooke's law, we can set up the following equation:

Force = k * Displacement

where k is the spring constant.

For the first scenario, we have:
15 N = k * (30 cm - L)

Next, we are given that an additional force of 10 Newton's stretches the spring to a length of 5 cm. This implies that the displacement of the spring is 5 cm - L.

Using Hooke's law again, we can set up the following equation:

10 N = k * (5 cm - L)

Now we have two equations:

15 N = k * (30 cm - L)
10 N = k * (5 cm - L)

We can solve this system of equations to find the value of L, the natural length of the spring.

By dividing the second equation by 10, we get:

1 N = k * (0.5 cm - 0.1L)

Rearranging the equation, we have:

1 N = 0.5 k - 0.1kL

Now, let's substitute the value of k from the first equation into this equation:

1 N = 0.5 (15 N / (30 cm - L)) - 0.1 (15 N / (30 cm - L)) * L

Simplifying the equation, we get:

1 = 0.75 / (30 cm - L) - 1.5L / (30 cm - L)

Combining the terms on the right side of the equation, we have:

1 = (0.75 - 1.5L) / (30 cm - L)

Cross-multiplying, we get:

30 cm - L = 0.75 - 1.5L

Simplifying the equation, we have:

L - 1.5L = 0.75 - 30 cm

Combining like terms, we get:

-0.5L = -29.25 cm

Dividing both sides of the equation by -0.5, we get:

L = 58.5 cm

Therefore, the natural length of the spring is 58.5 cm.

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Answer:

1500 north

Explanation:

Answer: 1500 north

Explanation:

Impulse is change of momentum. Since the numbers are already in units of momentum, you just need to subtract one from the other to find the impulse. 4000 - 2500 = 1500. Because the bobsled is traveling south and slowing down, the impulse will be in the opposite direction, or north.

1500 north.

The mass of the blood denoted is 501.6 g.

The mass of the blood denoted by Keona is calculated by applying the formula for density of a liquid as shown below.

density = mass/volume

mass = density x volume

The given parameters include;

The mass of the blood is calculated as follows;

mass = 1.06 g/mL x 473.176 mL

mass = 501.6 g

Thus, the mass of the blood is calculated from the formula of density.

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The complete question is below

While participating in a blood drive at school, Keona learns that blood has a density of 1.06 g/mL. She donates one pint of blood, which is equal to 473.176 mL. find the mass of the blood denoted.

The speed of an 11 g bullet that, when fired into a 12 kg stationary wood block, causes the block to slide 5.2 cm across a wood table is 574.7 m/s.

According to the principle of conservation of momentum, the momentum of the bullet before collision equals the sum of momentum of bullet and block after the collision. Thus: mv = (m + M)V; Here, m = 11 g = 0.011 kg (mass of bullet), M = 12 kg (mass of block), V = velocity of block and bullet after collision. v = velocity of bullet before collision.

Substituting the given values in the above equation and solving for V: 0.011v = (12 × V) - 0.20 × (12 × 9.81 × 0.052)V

0.011v / 12 - (0.20 × 12 × 9.81 × 0.052) / 12V

v / 1090.1 - 0.1017V

v / 1090.1.

The distance traveled by the block after collision is 5.2 cm or 0.052 m. Thus, V² - u² = 2as

= 2 × 0.20 × 9.81 × 0.052V² - (v / 1090.1)²

= 0.02152V² = (v / 1090.1)² + 0.02152V²

= 0.0000121 + 0.02152V²

= 0.0215321V = √0.0215321V

= 0.1466.

Thus, v = 0.1466 × 1090.1 = 574.7 m/s.

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Answer:

I would say temperature

The electrical energy consumed is 0.3 kWh.

The electrical energy consumed is determined by taking the product of the electric power and the time of energy usage.

The electrical energy consumed is calculated as follows;

E = Pt

where;

E = 1.2 kW x 0.25 h

E = 0.3 kWh

Thus, the electrical energy consumed is 0.3 kWh.

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The wrong statement is: "The aurora (northern and southern lights) cause the magnetic field."

The aurora (northern and southern lights) is a natural light display that occurs in the polar regions. It is caused by the interaction of charged particles from the Sun with the Earth's magnetic field. The aurora is a result of the magnetic field's influence on the charged particles, not the other way around. The magnetic field itself is generated by the movement of electrical currents in the outer core of the Earth. The magnetic impact on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it while the charge is travelling through a magnetic field.

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Answer:

no i haven't done it

Explanation:

clean yo computer tho

Answer:

kinetic energy equation is 85,714.2857 kg.

Explanation:

Answer: Kirchhoff first law: sum of currents coming in branch and leaving it are same.

Explanation: in parallel circuit current is divided between resistors.

In series circuit same current passes through all resistors.

One physical force that can change an object from one phase to the next is temperature. The phase of matter is determined by the arrangement and movement of its particles. As temperature changes, the average kinetic energy of the particles also changes, causing them to move faster or slower.

This change in movement can lead to a change in the arrangement of particles, which ultimately changes the phase of the matter.
For example, if a solid is heated, the particles gain energy and vibrate faster, causing the bonds between particles to weaken. Eventually, the bonds break, and the particles are able to move freely, resulting in a liquid phase. Similarly, if a liquid is cooled, the particles lose energy and move slower, causing the bonds between particles to strengthen. Eventually, the particles will become fixed in a rigid pattern, resulting in a solid phase.

Therefore, temperature can act as a physical force to change the phase of matter, and it is a fundamental concept in the study of thermodynamics and phase transitions.

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According to Hubble's law, with a Hubble constant (H₀) value of 70 km/s/Mpc, a galaxy with a recessional velocity of 6000 km/s is approximately 85.7 Mpc (megaparsecs) away.Hubble's law describes the relationship between the recessional velocity of a galaxy and its distance from us in an expanding universe.

It states that the recessional velocity (v) of a galaxy is proportional to its distance (d) from us, with the proportionality constant known as the Hubble constant (H₀). Mathematically, this can be expressed as v = H₀ * d.

Given that H₀ is 70 km/s/Mpc and the recessional velocity (v) of the galaxy is 6000 km/s, we can rearrange the equation to solve for the distance (d) of the galaxy. Dividing both sides of the equation by H₀, we get d = v / H₀.

Plugging in the values, we have d = 6000 km/s / 70 km/s/Mpc. Simplifying this expression, we find that the galaxy is approximately 85.7 Mpc away. Therefore, based on Hubble's law with the given H₀ value, a galaxy with a recessional velocity of 6000 km/s is estimated to be around 85.7 Mpc away from us.

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Answer:

A

Explanation:

change in direction ,velocity stays the same

The space probe will have the highest speed on Neptune.

The final speed of the space probe in each of the planet is calculated by applying the following kinematic equation as shown below.

v = u + gt

where;

For equal time of fall, the final speed of the space probe increases with increase in the acceleration due to gravity on each planet.

Thus, the planet with the largest acceleration due to gravity will cause the greatest speed of the space probe.

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When a bar magnet is oriented perpendicular to a uniform magnetic field, two important phenomena occur: the force and the torque on the magnet.

Force: The magnetic field exerts a force on the magnet due to the interaction between the magnetic field and the magnetic dipole moment of the magnet. In this case, the force will be perpendicular to both the magnetic field and the magnet. The force will tend to align the magnet with the magnetic field. If the magnet is free to move, it will experience a translational force that may cause it to move in the direction of the force.

Torque: The magnetic field also exerts a torque on the magnet, trying to rotate it. The torque is greatest when the magnet is perpendicular to the magnetic field lines. The torque will try to align the magnet with the magnetic field. If the magnet is free to rotate, it will experience a rotational force that may cause it to align itself with the magnetic field.

The exact magnitude and direction of the force and torque will depend on the strength of the magnetic field, the orientation of the magnet, and the magnetic properties of the magnet.

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The amount of liquid condensed in the process is 0.012 kg.What is the problem given?The problem provides the initial state and the final temperature of a cylinder-piston configuration consisting of air-water mixture, and the mass of dry air, and it asks us to calculate the amount of liquid condensed in the process.

The air-water mixture is characterized by its dryness fraction, which is defined as the ratio of the mass of dry air to the total mass of the mixture.$$ x = \frac {m_a}{m} $$where $x$ is the dryness fraction, $m_a$ is the mass of dry air, and $m$ is the total mass of the mixture.

They are:P1,sat = 12.33 kPaT1,sat = 26.05°C = 299.2 KWe can determine that the air-water mixture is superheated in the initial state using the following equation:$$ T_{ds} = T_1 + x_1 (T_{1,sat} - T_1) $$where $T_{ds}$ is the dryness-saturated temperature and is defined as the temperature at which the mixture becomes saturated if the heat transfer to the mixture occurs at a constant pressure of  is the specific gas constant for dry air .

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Answer:

6.72 m/s

Explanation:

recall that the equations of motion may be expressed as

v² = u² + 2as

where,

v = final velocity,

u = initial velocity = 0 m/s because it is stationary before it starts falling

a = acceleration (in this case because it is falling, it is the acceleration due to gravity = 9.81 m/s²)

s = distance traveled = 2.3m

in our case, if we neglect air resistance, then we simply substitute the known values above into the equation of motion.

v² = u² + 2as

v² = 0² + 2(9.81)(2.3)

v² = 45.126

v = √45.126

v = 6.72 m/s

The magnitude of the force, F, between an ion and a molecule with polarizability α can be expressed as:
F = (q² * α) / (4πε₀r⁶)
Here, q represents the charge of the ion, α represents the polarizability of the molecule, r represents the distance between the ion and the molecule, ε₀ represents the permittivity of free space, and π is a mathematical constant.

The force between an ion and a molecule with a permanent dipole moment is known as an ion-dipole interaction. This force arises due to the attraction between the ion and the partial charges of the dipole. In the case of an ion and a molecule with polarizability, the force is known as an ion-induced dipole interaction.

The force between the ion and the polarizable molecule is inversely proportional to the sixth power of the distance, r. This means that as the distance between the ion and the molecule increases, the force decreases rapidly.

The force is also directly proportional to the square of the charge, q, and the polarizability, α. A larger charge or polarizability will result in a stronger force between the ion and the molecule.

Overall, the expression for the magnitude of the force, F, between an ion and a molecule with polarizability α is given by:
F = (q² * α) / (4πε₀r⁶)

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Jaipal can calculate for the voltage (V) in the circuit

Ohm's laws states as follow:

V = IR

Where:

V is the voltage (unit V)

I is the current (unit A)

R. Is the resistance (unit ohm)

Current (I) = 1.2 A

Resistance (R) = 24 ohms

From the above we can see that the voltage is missing.

Thus, using ohm's law, Jaipal can calculate for the voltage (V) in the circuit

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Jaipal can calculate the Voltage in the circuit from the current and resistance he measured.

The given parameters:

According to Ohms law, the voltage across a conductor is directly proportional to the current flowing the conductor.

V = IR

where;

V = 1.2 x 24

V = 28.8 V

Thus, Jaipal can calculate the Voltage in the circuit from the current and resistance he measured.

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the ratio of the moment of inertia through the second axis to the moment of inertia through the first axis is 0.676

The second axis is at the centroid of the rod.

The length of the rod is L = 100 cm = 1 m

The first axis is located at 20 cm = 0.2 m from the centroid.

Let m =  the mass of the rod.

The moment of inertia about the centroid (the 2nd axis) is

Ig =  ml^3/12 = (m kg) (1 m)^2/12 = m/12 kg - m^2

The parallel axis theorem states that

I1 = m/12+0.04 m = 0.1233 m kg - m2 is the moment of inertia about the first axis.

The ratio of the moment of inertia through the centroid of the second axis to the first axis is

Ig/I1= 0.0833 m / 0.1233 m = 0.676

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Explanation:

Given that,

Mass of an object, m = 250 g = 0.25 kg

Spring constant, k = 48 N/m

The amplitude of the oscillation, A = 5.42 cm = 0.0542 m

1. At equilibrium,

ma = kx

Where

a is the acceleration of the object

So,

\(a=\dfrac{kx}{m}\\\\a=\dfrac{48\times 0.0542}{0.25}\\\\a=10.4\ m/s^2\)

2. The maximum speed of the object is :

\(v=A\omega\\\\v=A\sqrt{\dfrac{k}{m}}\\\\v=0.0542\times \sqrt{\dfrac{48}{0.25}}\\\\v=0.75\ m/s\)

Hence, this is the required solution.

Answer:

180 because it's half of a full rotation before they shoot the other person.

Answer:

The baseball was falling during 1.733 seconds.

Explanation:

The baseball experimented a free fall, which is a particular case of uniformly accelerated motion, in which object is accelerated by gravity. In this case, we need to determine the time spent by the ball before hitting the ground (\(t\)), measured in seconds, which is determined by the following kinematic formula:

\(t = \frac{v-v_{o}}{g}\) (1)

Where:

\(v_{o}\), \(v\) - Initial and final speeds of the baseball, measured in meters per second.

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

If we know that \(v_{o} = 0\,\frac{m}{s}\), \(v = 17\,\frac{m}{s}\) and \(g = 9.807\,\frac{m}{s^{2}}\), then the time spent by the baseball is:

\(t = \frac{17\,\frac{m}{s}-0\,\frac{m}{s} }{9.807\,\frac{m}{s^{2}} }\)

\(t = 1.733\,s\)

The baseball was falling during 1.733 seconds.

Answer:

DMs are not accessible anymore. I assume Zuka is a staff member? the only way to talk to a staff member anymore is to report something, but even then, the probably won't even look at what they're deleting :/

May I have brainliest please? :)

When the Earth's surface is turned toward the Moon, high tides happen as a result of the Moon's gravitational pull.

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Answer:A pendulum consists of a ball at the end of a massless string of length 1.4 m. The ball is released from rest with the string making an angle of 20 degrees with the vertical. What is the maximum speed of the pendulum?

Explanation: Have a great day and oh here is a little something to warn the great people. In the comments....

;)