a ball of mass 0.03 kg is moving with a velocity of 30 m/sec and is caught in a box, initially at rest, that has a mass of 2.5 kg. a. what is the initial momentum of the ball? b. how fast is the box/ball moving just after collision? c. what is the impulse on the ball? d. what is the impulse on the box? e. which experienced the greater force? f. the greater change in momentum? g. the greater change in velocity? h. the greater acceleration?

Answer:

Explanation:

W = 25 Watts

V = 12.6 Volts

I = ? I is the current in amperes.

Solution

25 = 12.6 * I

I = 25 / 12.6

I = 1.98 amperes

V = 12.6

I = 1.98

R = ??

V = I * R

12.6 = 1.98 * R

R = 12.6 / 1.98

R = 6.35 ohms

Answer:

\( \boxed{ \sf{See \: below}}\)

Explanation:

Seismograph is a computerized instrument that measures the intensity , origin and speed of the earthquake.

Hope I helped!

Best regards! :D

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According to the problem the temperature of the light bulb is 1 Kelvin.

Temperature is a measure of how hot or cold something is. It is measured using a thermometer or thermocouple and is usually expressed as a number on a scale, such as Celsius or Fahrenheit.

The temperature of a light bulb can be calculated using the Stefan-Boltzmann law. This law states that the power emitted by a blackbody is proportional to the fourth power of its temperature. Therefore, the temperature of the light bulb can be calculated by taking the fourth root of the ratio of the power emitted by the human to the power emitted by the light bulb.
The power emitted by a human is around 100 watts and the power emitted by a 100 watt incandescent bulb is also 100 watts. Therefore, the temperature of the light bulb is the fourth root of 100/100, which is 1.
Therefore, the temperature of the light bulb is 1 Kelvin.

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A  radioactive tracer atom with carrier molecules attached to them. They are used in alternate medicine known as radioactive medicine therapy.

Using radioactive tracers (also known as radiopharmaceuticals) to diagnose and treat disease, nuclear medicine is a branch of medicine. Doctors are able to follow the passage of these radioactive tracers thanks to specially created cameras. Carrier molecules that are firmly bound to a radioactive atom make up radioactive tracers. Depending on the goal of the scan, these carrier molecules can have many different forms. Some tracers use chemicals that interact with certain body proteins or sugars, and some even use the patient's own cells. A patient receives an intravenous injection of the radioactive tracer for the majority of nuclear medicine diagnostic procedures.

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Answer:

imma have to come back to you on that one

Answer:

The Sun is at the center of the solar system and the planets move around it.

Explanation:pluto/edmentum

Answer:

3 seconds

Explanation:

The initial velocity is 60 m/s at an angle of 30° to the horizontal, so we can calculate the initial velocity in the vertical direction as

Viy = Vi sin(θ)

Viy = 60 sin(30)

Viy = 60(0.5)

Viy = 30 m/s

Then, we can use the following equation to calculate the time that it takes to reach the maximum height.

At a maximum height the vertical velocity is 0 m/s, so replacing viy = 30 m/s, vfy = 0 m/s and g = 10 m/s², we get

Therefore, the answer is 3 seconds

Answer:

please write in english

Answer:

A

Explanation:

just did took quiz

Nuclear power plants provide cheap electricity to power people's

homes the statement that illustrates how engineering has influenced society, therefore the correct option is A.

It is a type of power plant in which the power is generated with the help of a nuclear reactor involving a nuclear which could be either nuclear fission or fusion reaction.

There is an enormous amount of energy generated when a radioactive material goes into a nuclear reaction, this energy is utilized to form steam from the water in the nuclear reactor which is further passed through the turbine to produce the electricity.

As we can see how complex it is to produce electricity from a tiny amount of radioactive material,humanity has come so far to solve complex problems for the betterment of human society.

Science and its application with help of applicative engineering drive the growth of human civilization.

Hence , we can say that nuclear power plants provide cheap electricity to power people's homes the statement that illustrates how engineering has influenced society, therefore the correct option is A.

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Explanation:

Let's say right is positive and left is negative.

F₁ = -150 N

F₂ = 220 N

Fnet = F₁ + F₂

Fnet = -150 N + 220 N

Fnet = 70 N

The magnitude of Fnet is 70 N, and since it's positive, the direction is to the right.

And since Fnet isn't 0, the force is unbalanced and the motion is changing.

The correct statement is: The girl is doing no work on the ball because the ball is not displaced.

The girl is not doing any work on the ball because the ball is not displaced. The ball does not move when the girl holds it in place. When a force is applied to an object, work is said to have been done. In order for work to be done, the object must move. The formula for work is:

Work = Force x Distance.

It implies that for work to be done, there must be a net displacement of an object in the direction of force applied.

The correct statement which describes whether a girl holding a ball in the same position is doing work on the ball is "The girl is doing no work on the ball because the ball is not displaced." The ball is at rest, so no displacement occurs. Therefore, the girl is not doing any work on the ball because work requires a net displacement of an object.

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The magnitude of acceleration that the ninja can have without breaking the rope can be found using Newton's second law of motion, which states that the force acting on an object is equal to the product of its mass and acceleration. The ninja must have a magnitude of acceleration of 8 m/s^2 in order to avoid breaking the rope.

We know that the mass of the ninja is 50 kilograms and the maximum tension the rope can handle is 400 N. Since the ninja is sliding down, the force acting on the ninja is equal to the tension in the rope.

Let's assume the magnitude of acceleration as 'a'. According to Newton's second law, the force acting on the ninja is given by the equation F = ma, where F is the force, m is the mass, and a is the acceleration.

We can rearrange the equation to solve for acceleration: a = F/m.

Plugging in the given values, we have a = 400 N / 50 kg.

Simplifying this, we find that the magnitude of acceleration should be 8 m/s^2 for the ninja to avoid breaking the rope.

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Answer:

Hello, I'm here to help you.

↬ 78%

Explanation:

↬ Think that about 70% of the area of the earth is covered by the ocean.

↬ So the precipitation that falls on it is a smiliar percentage.

The thunder and lightning happen at the same time but sound waves move more slowly than light waves. So if it takes longer for the sound to reach you, therefore the storm is farther away.

A sound wave is described as the pattern of disturbance caused by the movement of energy traveling through a medium such as air, water or any other liquid or solid matter as it propagates away from the source of the sound.

Sound waves are divided into three categories and they :

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The image will form at the focal point

1/object + 1/image = 1/focal

If the object distance is infinite then the image distance equals the focal distance

No, according to the first law, whether a certain amount of energy is added by doing work on the system or by adding heat, the internal energy will change in the same way.

A thermodynamic system's total internal energy is defined as the energy it possesses. It consists of both internal kinetic energy and potential energy contributions, and it is the energy required to develop or prepare the system in its current internal condition. The system's energy gains and losses resulting from modifications to its internal state are tracked by this mechanism. It excludes all external energies from surrounding force fields as well as the kinetic energy of the system's overall motion. The first law of thermodynamics, which is based on the idea that an isolated system's internal energy is constant, is stated as the law of conservation of energy. An vast quality is the internal energy.

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Answer:

Is a tree an example of chemical energy?

Take, for example, an apple tree. The tree absorbs light energy from sunlight, converting the light energy into chemical potential energy stored in chemical bonds. The tree uses this energy to build leaves and branches and fruit. ... Then it takes that heat and converts it into motion, or kinetic energy

Explanation:

Answer:

Hey buddy, here is your answer. Hope it helps you.

Explanation:

Solids.Sound travels fastest through solids. This is because molecules in a solid are packed against each other. When a vibration begins, the molecules of a solid immediately collide and the compression wave travels rapidly.Sound moves slowest through a gas. That’s because the molecules in a gas are spaced very far apart. In order for sound to travel through air, the floating molecules of matter must vibrate and collide to form compression waves. Because the molecules of matter in a gas are spaced far apart, sound moves slowest through a gas.

Sound travels faster in liquids than in gases because molecules are packed more closely together. This means that when the water molecules begin to vibrate, they quickly begin to collide with each other forming a rapidly moving compression wave.

The particles of water will be moving the fastest in steam. Steam is the gaseous form of water, which occurs at temperatures above 100 degrees Celsius (212 degrees Fahrenheit). In this state, the water molecules have the highest amount of energy, and they move rapidly and freely in all directions.

When water is heated and reaches its boiling point, the energy supplied to the molecules causes them to overcome the attractive forces between them, leading to the transition from a liquid to a gas. As steam, the water molecules have gained enough energy to break free from the liquid phase and exist as individual molecules in the gaseous state.

On the other hand, at lower temperatures, such as 25 degrees Celsius (77 degrees Fahrenheit), water is in its liquid state. While the particles still possess kinetic energy and are in constant motion, their movement is comparatively slower than in steam. The intermolecular forces in the liquid state are stronger than in the gaseous state, allowing the molecules to stay closer together and move more sluggishly.

Ice, which is water in its solid state, has the slowest particle movement among the given options. At temperatures below 0 degrees Celsius (32 degrees Fahrenheit), the water molecules form a rigid lattice structure, and their movement is restricted to vibrations in fixed positions. The particles in ice have the least amount of energy and exhibit the least mobility.

Therefore, considering the given options, steam is the state of water where the particles are moving the fastest due to the high temperatures and increased molecular energy.

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Answer:

Lunar eclipses are more widely visible because Earth casts a much larger shadow on the Moon during a lunar eclipse than the Moon casts on Earth during a solar eclipse.

Answer:

The ball continued moving in the same direction and its speed increased.

When John kicked the ball, this was an example of motion. The ball's force increased because the ball got force from John's leg. So, the answer is option A.

Hope this helps you!

It is possible to predict the speed that a coaster will reach before it is ever placed on the track  by using the conservation of energy principle.

The principle of energy conservation states that energy can neither be created nor destroyed. It may transform from one form to another form.

Just like in roller coaster, velocity at the maximum height is predicted by using this principle. At the maximum height, potential energy is maximum and kinetic energy is minimum.

Thus, It is possible to predict the speed that a coaster will reach before it is ever placed on the track  by using the conservation of energy principle.

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Answer:

0

Explanation:

Displacement is a vector from initial to final point. Because initial and final point are the same, so displacement is 0.

When an object is released with an initial velocity upward, the direction of its acceleration is typically downward.

This is because the force of gravity, which acts on the object, pulls it in the opposite direction to its motion. According to Newton's second law of motion, the net force on an object is equal to its mass multiplied by its acceleration. In this case, the force of gravity acts as the net force, causing the object to accelerate downward.

The acceleration due to gravity is approximately 9.8 meters per second squared on Earth, and it acts downward towards the center of the planet. Therefore, when the object is released with an initial velocity upward, the gravitational force causes it to decelerate and eventually change direction, resulting in a downward acceleration. This downward acceleration opposes the initial upward velocity of the object until it eventually reaches its peak and starts to fall back down under the influence of gravity.

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The possible reason for zero light being detected through the eyepiece when observing a fluorescent-dyed sample under a microscope could be the absence of excitation light.

Fluorescence microscopy relies on the principle of fluorescence, where a sample absorbs light at a specific wavelength and emits light at a longer wavelength. To observe fluorescence, two key components are required: excitation light and emission light.

The excitation light, typically provided by a specific wavelength of light such as ultraviolet or blue, is used to excite the fluorophores in the sample. These fluorophores then emit light at a longer wavelength, known as the emission light, which is detected by the microscope's eyepiece or camera.

In the given scenario, if there is zero light being detected through the eyepiece, it suggests that there might be no excitation light reaching the sample. This could occur due to several reasons. One possibility is that the light source for excitation is not turned on or not properly aligned with the sample. Another reason could be a malfunctioning excitation light source, such as a bulb or laser.

Additionally, if the fluorescent dye used in the sample requires a specific wavelength of excitation light and the microscope's light source does not emit light at that particular wavelength, it would result in no excitation and consequently no fluorescence.

To troubleshoot this issue, one should ensure that the excitation light source is properly functioning and aligned with the sample. Checking the light source settings, replacing bulbs if necessary, and adjusting the microscope's configuration to match the required excitation wavelength are crucial steps to consider.

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The magnetic field strength is 0.420 Tesla.

The torque (τ) on a square coil of side length L, carrying a current I, placed parallel to a uniform magnetic field B is given by:

τ = (BIL)^2 / (2π)

Rearranging this formula, we can solve for the magnetic field strength B:

B = √(2πτ / IL)^2

Substituting the given values, we get:

B = √[(2π)(0.330×10^-3 Nm) / (6.22 A)(0.222 m)]^2

B = 0.420 T

The torque acting on a current-carrying loop in a magnetic field can be calculated using the formula:

τ = N * B * A * sin(θ)

Where:

τ is the torque,

N is the number of turns in the loop,

B is the magnetic field strength,

A is the area of the loop, and

θ is the angle between the magnetic field and the normal to the loop.

In the given problem, the torque is given as 0.330 mN (millinewtons) and the number of turns in the loop is 1.

So, the torque equation can be written as:

0.330 mN = 1 * B * A * sin(θ)

To find the magnetic field strength B, we need to know the values of the area of the loop (A) and the angle (θ) between the magnetic field and the normal to the loop. If those values are provided, we can solve for B using the given torque.

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Answer:

50kg.m/s

Explanation:

In order to find momentum you must use the formula P=mv

p= momentum

m=mass

v= velocity

so in other words, momentum= mass times velocity

or in this case, momentum= 10 times 5  :)