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Answer:

Change in momentum = 60kgm/s.

Explanation:

Given the following data;

Mass, m = 12kg

Initial velocity, u = 9m/s

Final velocity, v = 14m/s

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

\( Momentum = mass * velocity \)

To find the change in momentum;

Mathematically, change in momentum is given by the formula

\( Change \; in \; momentum = m(v - u) \)

Substituting into the equation, we have;

\( Change \; in \; momentum = 12(14 - 9) \)

\( Change \; in \; momentum = 12*5\)

Change in momentum = 60kgm/s.

The right answer is (d) Particle B is inside the nucleus while Particle A orbits it.

Particle A is likely to be an electron, which has a small mass in comparison to the atomic nucleus, which is composed of protons and neutrons (Particle B). Electrons orbit the nucleus in the electron cloud and have a negative charge, while protons and neutrons are located in the nucleus and have a positive charge. Therefore, based on this information, it is most likely that Particle A orbits the nucleus and Particle B is located in the nucleus.

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Question - Particle A has very little mass in comparison to Particle B. Both particle are in the same atom. Which is the be conclusion about Particle A and B?

(a) They have the same charge

(b) They are located in the nucleus together.

(c) Particle A has a positive charge, and Particle B is neutral.

(d) Particle A orbit the nucleus, and Particle B is located in the nucleus.

The eccentricity of the object's orbit can be determined by using the ratio of its maximum angular speed to its minimum angular speed.

Let's denote the maximum angular speed as ω_max and the minimum angular speed as ω_min. We are given that the ratio of these two speeds is n:

n = ω_max / ω_min

The angular speed (ω) is related to the angular momentum (L) and the moment of inertia (I) of the object by the equation:

L = Iω

Since the object moves in an inverse square centripetal force field, the angular momentum (L) is conserved. Therefore, we can write:

L_max = L_min

Iω_max = Iω_min

The moment of inertia (I) can be expressed as the product of the mass (m) and the square of the distance (r) from the object to the axis of rotation:

I = mr^2

Substituting this into the equation above, we get:

m(r^2)ω_max = m(r^2)ω_min

Canceling out the mass (m) and the square of the distance (r^2), we obtain:

ω_max = ω_min

This implies that the maximum and minimum angular speeds are equal, contradicting the given ratio n = ω_max / ω_min. Therefore, there must be an error in the question or the provided information.

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The free metal electrons in a wire collide with the particles transporting the charge through the wire.

Strong metallic connections keep the constituent parts of a metal together. The particles are arranged in a predictable pattern and are close together. The outside electrons of metal atoms are loose, creating a "sea" of delocalized or free negative charge around the densely packed positive ions.

Hence, the flow of charged particles or charge carriers is what constitutes electric current. Any charged particle, such as an electron, proton, or ion, can serve as the charge carrier. In an electric circuit, electrons typically carry the charge.

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Answer:

High pressure.

Explanation:

The symbol H indicates high pressure, while the symbol L indicates low pressure. Therefore, option C is correct.

A weather map is a map of the world or a portion of it that uses symbols to depict the weather conditions at a given time, including temperature, pressure, wind speed and direction, humidity, clouds, visibility, and type and amount of precipitation.

Different kinds of weather maps are used by meteorologists to display forecasts. Satellite, Doppler radar, precipitation, temperature, and wind speed are the primary weather maps. Let's investigate each of these in greater depth. There are four types of weather maps and that is station model map, aviation map, temperature map, and streamline map.

The symbol H indicates high pressure. Therefore, option C is correct.

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Answer:

Explanation:

2 min 20 sec = 140 sec .

In 40 sec  one round

In 140 sec 140 / 40 round = 3.5 round .

That means the boy will be positioned at the diametrically opposite corner of the square path .

side of square path = 15 m

length of diameter = 15√2

= 21.21 m

Displacement of boy is 21.21 m .

Answer:

d)Both Bulbs A and C will stay lit

Answer:

150

Explanation:

work done = constant force x distance moved in the direction of force

W = F x S

(UNITS: J = N x m)

50 x 3 = 150

Answer: C) it is deficit of 1.87 x 10^19 electrons

Explanation:

Answer:  With Hydroelectric power water is artificially stored in a high place, so it can be released and flow to a low place and through a generator. With Tidal energy the movement of water is also used to power a generator, but the flow of water is caused by the changing tides.

Answer:

alpha particles carry a positive charge, beta particles carry a negative charge, and gamma rays are neutral

Explanation:

Alpha rays have poor penetration power. They can cause little harm from outside. The outer layer of dead skin in humans, a thick sheet of paper, or a layer of clothes can resist alpha penetration.

However, alpha particles also have the greatest mass, which implies that they have the greatest ionizing power. If an alpha particle somehow gets into the system through inhaling or swallowing, they become the most dangerous.

Chances of alpha particles getting inside the system occur only in situations of a nuclear accident or explosion. Once inside, alpha particles can cause maximum damage to the tissues of humans and other living organisms.

Beta particles are smaller and have less tissue-damaging power when inside an organism. However, they have greater penetrative power. From the outside, beta particles can burn human skin. It would be similar to a severe sunburn.

Gamma rays have the highest penetration power. A living organism such as a human being exposed to gamma rays faces a high risk of having bone marrow and internal organs damaged.

Gamma rays can pass through a body, damaging tissue and DNA in the process. Scientists consider gamma rays to be the most dangerous form of radiation.

Also:

Alpha particles are positive, heavy, and slower in its movement in comparison to other kinds of nuclear radiation. The travel speed of alpha particles is 5-7% of the speed of light.

Radiotherapy in cancer treatment uses alpha particles to kill the cancerous cells. Because of their low penetration power, they cannot damage the healthy cells surrounding the cancerous part.

One-thousandth of the mass of a proton is the mass of a beta particle. Beta particles carry either one negative charge – an electron, or one single positive charge – a positron. Because of their small mass, beta particles can travel almost at the speed of light.

Beta particles get used as tracers for medical imaging. They also have therapeutic uses in bone and eye cancer treatment. Smoke detectors also use beta particles. Sometimes, beta particles are used for quality control. Checking the thickness of paper, for instance.

Gamma has no mass and no electrical charge. It can travel at the speed of light. There is some application of gamma rays in oncology, and for sterilizing medical instruments

Beta particles have a negative charge, alpha particles have a positive charge, and gamma rays are neutral.

Energy that emanates from a source and moves through space at the speed of light is referred to as radiation. This energy has wave-like qualities and is accompanied by an electric field and a magnetic field. Radiation may also be referred to as electromagnetic waves.

Ionizing radiation and non-ionizing radiation are the two types of radiation. Non-ionizing radiation has sufficient energy to cause molecules' atoms to vibrate or move about, but not enough to deplete them of their electrons.

Gamma rays are neutral, alpha particles are positively charged, while beta particles are negatively charged.

An alpha particle is made up of two protons and two neutrons. Beta particles are thought to be highly energetic electrons. Photons are electromagnetic energy waves, and they are what gamma rays are.

Thus, this is the difference between the properties of alpha, beta and gamma radiations.

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Answer:

1, 2, 3, 4

Explanation:

Just did it on Edge

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Answer:

1234 is correct

Explanation:

400 m2

Explanation:

Pressure = Force ÷ Area

5 N/m2 = 2000 N ÷ A

A = 2000 N ÷ 5

= 400 m2

If a force of 2000N is applied, the area that the force is applied to is 400 m²

The word "force" has a specific meaning in science. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains."

One thing experiences a force from another. There are both living things and non-living objects in the concept of a force.

The amount of force applied to a certain region is referred to as pressure. The force per unit area is called pressure. F in this condensed version of the equation stands in for the force, which is expressed in newtons.

Given that the pressure of 5 N/m²

Force is 2000N

Pressure = Force ÷ Area

5 N/m² = 2000 N ÷ A

A = 2000 N ÷ 5 = 400 m²

Therefore, the area that the force is applied to is 400 m².

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Answer:Whenever the velocity of the object increases or usually doubles, the kinetic energy will be quadrupled. If in case you are not familiar with kinetic energy, this is known as the type of energy that is in motion. The greater the mass of the object, the greater the total of the energy

Explanation:

Change to an object would quadruple its kinetic energy Increasing its velocity to twice its original value

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest. Formally, kinetic energy is any term in a system's Lagrangian which includes a derivative concerning time.

In classical mechanics, the kinetic energy of a non-rotating object of mass m traveling at a speed v is \({\textstyle {\frac {1}{2}}mv^{2}}\)

In relativistic mechanics, this is a good approximation only when v is much less than the speed of light.

The standard unit of kinetic energy is the joule, while the English unit of kinetic energy is the foot-pound.

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The distance from the lens to the focal point is called the focal length.

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According to given information to find the weight of the car, we can use the concept of pressure and area. The car weighs approximately 4.8 x 10³ N.

1. The absolute pressure in each tire is given as 2.0 x 10⁵ Pa.
2. The area of each tire in contact with the ground is given as 0.024 m².

To calculate the weight of the car, we can use the formula:

Pressure = Force / Area

Rearranging the formula, we have:

Force = Pressure x Area

Now, let's plug in the values:

Force = (2.0 x 10⁵ Pa) x (0.024 m²)

Multiply the values:

Force = 4.8 x 10³  N

Therefore, the weight of the car is approximately 4.8 x 10³  N.

Conclusion ,The car weighs approximately 4.8 x 10³  N.

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Answer:

Given: 6 questions with certain values of mass and acceleration.

To find: The amount of force?

Solution:

An object with a mass of 2.0 kg accelerates 2.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

                    F = m x a = 2 x 2 = 4 N

An object with a mass of 5.0 kg accelerates 8.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

                     F = m x a = 5 x 8 = 40 N

An object with a mass of 1500 g (grams) accelerates 10.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

Now in this mass is in grams, so converting it kg, we get:

                    1500/1000 kg = 1.5 kg

                   F = m x a = 1.5 x 10 = 15 N

Explanation:

Answer:

Net force is the sum of all forces acting on an object. The net force can be calculated using Newton's second law, which states that F = ma, where: F is the net force. m is the mass of the object.

Explanation:

Answer:

accelerating

Explanation:

If  accelerating it has a net ( unbalanced) force acting on it .

  with zero net forces it will either remain at rest or continue moving (but not accelerate)

Answer:

120Wh

Explanation:

A 120 W light bulb uses 120 watt-hours (Wh) of energy in one hour. This means that if the light bulb is kept on for one hour, it will consume 120 Wh of electricity.

If you want to calculate the energy consumed by the light bulb over a longer period of time, you can use the following formula:

Energy (in kilowatt-hours) = Power (in watts) x Time (in hours) / 1000

Using this formula, the energy consumed by a 120 W light bulb kept on for 1 hour is 0.12 kWh.

The box will be in rest due to net force applied on it is zero.

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

Given that Bert and Ernie are pushing on opposite sides of the box with force of same magnitude, let it be F.

So, net force acting om the force = F-F = 0.

As that net force acting on the box is zero, the box will be in rest.

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Magnitude of the gravitational force exerted by earth on a 2.0- kg brick when the brick is in rest is calculated to be 19.54 N.

The gravitational force pulls objects with mass towards each other. We often think about the force of gravity from Earth but this force is what keeps your body on the ground. Any object having mass exerts a gravitational force on all other objects with mass.

We say that gravitational force is attractive because it always pulls masses together and never pushes them apart. Gravitational force is directly proportional to the mass of both interacting objects such that, more the mass of, greater is gravitational force .

F= GMm/ R²

= (6.67 *10⁻¹¹ * 6 * 10⁻²⁴ *2)/(6.4* 10⁶)

= 19.54 N

the magnitude of the gravitational force exerted by earth on a 2.0- kg brick when the brick is at rest = 19.54 N

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Answer:

Zero, the support force and gravitational force together equal a zero net force

Explanation:

Raw sewage contains microorganisms that can harm ecological systems as well as make people and animals ill. In addition to bacteria and viruses, raw sewage frequently include germs that are harmful to human health. Additionally, there are additional substances in raw sewage that are just poisonous to fish, shellfish, mammals, and other aquatic life. Consequently, sewage pollution that enters a body of water sets off a negative cascade.

The definition of diversity is the quality of including or consisting of several constituents .The development of workplace diversity models since the 1960s has given rise to a strong commercial rationale for diversity. The initial paradigm for diversity in the United States was based on affirmative action and the equal opportunity employment goals put in place by the Civil Rights Act of 1964. The principle of equal employment opportunity was predicated on the notion that anybody who was intellectually or physically prepared for a particular profession might work toward (and perhaps achieve) getting the stated position without experiencing identity-based discrimination. This compliance-based strategy gave birth to the notion that the only reason a person who was different from the majority group was employed into a corporation was for show.

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To determine the period of the capacitancein the LC capacitance, we can use the relationship between the capacitance(L) and the capacitance (C):

(a) The capacitance(T) of the oscillations can be calculated using the formula:

T = 2π√(L * C)

(b) The time elapsed between the instant when the capacitor is capacitanceand the next instant when it is fully charged is half of the period, since the charging and capacitancecycles of the LC circuit are capacitance.

Let's solve the equations using the given values:

(a) Maximum charge on the capacitor: \(Q = 7.0 × 10^(-6) C\)

Maximum current through the inductor: \(I = 9.5 × 10^(-3) A\)

We can calculate the capacitance using the formula:

Q = C * V, where V is the voltage across the capacitor when it is fully charged.

Since the voltage across the capacitor is not provided, we need more information to calculate the capacitance accurately.

(b) Assuming we have the capacitance value, we can calculate the period (T) and then find the time elapsed between the uncharged and fully charged instants by dividing T by 2.

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Answer:3

Explanation: I just took the quiz

The distance between two successive troughs or crests is known as the wavelength There are 3 complete wavelengths are shown in this image.

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 wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

The length of a wave is measured in its propagation direction. The wavelength is measured in meters, centimeters, nanometres, and other units since it is a distance measurement.

Hence Option D is correct. There are 3 complete wavelengths are shown in this image.

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We can see that the diagram that explains the Mindy's Christmas tree ornament that hangs motionless on a tree is diagram C.

We know that force is a vector quantity. Because we know that force is a vector quantity, then it follows that we have to take the direction of the force into account when we are looking at the force that acts on an object.

Now we can see that as the  Christmas tree ornament hangs motionless on a tree, we envisage that there are two forces that are acting on the Christmas tree and these forces are balanced, If the forces are balanced then the object would not move but would remain at a point. Acceleration can only be imparted to a system of unbalanced forces.

Looking at the images, we have to look out for the image that shows the weight (downward) and the reaction (upward) forces.

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-47 degrees Fahrenheit is the actual air temperature if the temperature adjusted for wind chill is -25 degrees Fahrenheit

Define temperature

How hot or chilly the air is is determined by its temperature. The most typical weather parameter is it. Temperature is a more precise term for the kinetic energy, or energy of motion, of the airborne gases. The air temperature rises when gas molecules travel more swiftly.

Surface temperature is another name for it in meteorology. A thermometer that is placed outside but shielded from the light will read the temperature of the air.

y= -16 + 1.2x

The temperature adjusted for wind chill , Y is -25 degrees Fahrenheit

The actual air temperature is X

-25 = -16 + 1.2x

1.2x = -25+16

x = -9/1.2

x = -47

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Answer:

Explanation:

The acceleration of an object given it's velocity and time taken can be found by using the formula

\(a = \frac{v}{t} \\ \)

where

v is the velocity

t is the time

From the question

v = 450 m/s

t = 15 s

We have

\(a = \frac{450}{15} \\ \)

We have the final answer as

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