State the two types of intermolucular forces​

Answer:

89 i would say

Explanation:

The current through the 2Ω resistor is 9.5A

The terminal voltage is 10.8 V

a) The voltage V across 8 Ω resistor is V = I*R = 8*0.5 = 4V

the current through 16Ω resistor is then I = V/R = 4/16 = 0.25 A

the current through 20Ω resistor is then I = current through 8Ω resistor + current through 16Ω resistor = 0.75 A

voltage across 20Ω is V = I*R = 0.75*20 = 15 V

the source voltage is Vs = V8 + V20 = 4+15 = 19 V

therefore the current through 2Ω resistor is

I = V/R = 19/2 = 9.5 A

b) The terminal voltage is

Vterminal = VR = I*R = 0.450*24 = 10.8 V

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When we increase the intensity of incident light, the number of electrons ejected from the metal surface has increased energy. Thus, correct option is D.

Electrons are emitted from the metal surface when it is exposed to light. This is called the photoelectric effect. Each metal has a certain threshold frequency of light at which an electron is emitted. Above this frequency, the electron is emitted and the extra energy is transferred to the electron.

On increasing the intensity of incident light, the kinetic energy of electrons increases several folds. This is because, energy of an electron is directly proportional to the intensity of incident light. Thus, D is the correct option.

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Your question is incomplete, probably the complete question/missing part is:

You shoot a beam of 4. 5 ev light at a metal surface and notice that electrons are being released from the metal. What will happen if you then increase the intensity of the 4. 5 ev light?

A. The metal will bend and warp.

B. Nothing, the energy of the light is the same.

C. More electrons would be released.

D. Photons would come off at higher speeds.

what is there in the scroll box

Answer:

1.5 m/s^2

Explanation:

a = velocity/time

27/18 = 1.5 m/s^2

Answer:

5 m/s

Explanation:

Given that,

A vehicle is moving with 20m/s towards the east and another is moving 15m/s towards the west​.

It is assumed to find the resultant velocity of the vehicle. Let east side is positive and west is negative. So,

\(v=v_1+v_2\\\\=20+(-15)\\\\=5\ m/s\)

Hence, the resultant velocity of the vehicle is equal to 5 m/s.

Answer:

 Newton's third law of motion: Your body exerts a downward force on the chair and the chair exerts an upward force on your body.

Explanation:

Not a straight up answer, but moreover to help you get it: (Circuit Boards)

Aside from the tasks it performs, perhaps the most important function of a circuit board is providing a way to integrate the electronics for a device in a compact space. A PCB allows components to be correctly connected to a power source while being safely insulated. Also, circuit boards are less expensive than other options because they can be designed with digital design tools and manufactured in high volume using factory automation.

Partially straight up, helping you  get the answer: (Copper Chloride)

Copper(II) chloride is the chemical compound with the chemical formula CuCl 2. This is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate.

The person recoils in the west direction which is the direction opposite to that in which the ball is thrown with a velocity of 12.774m/s

To solve this question we need to make use of the Law of conservation of linear momentum according to which

initial momentum of a body + final momentum of the body = 0

We know that momentum p =mv where m is the mass of the body and v is the velocity of the body

From the given data in the problem, let the initial mass of the body( consisting of a person, skateboard, and bowling ball) be m1 = mass of person+mass of skateboard+mass of bowling ball = (85+ 1.8+ 5.6)kg = 92.4 kg

Let the mass of the body after ball is thrown be m2 = mass of person+mass of skateboard = 85+1.8 = 86.8kg

The velocity with which the ball is thrown east v2= 12m/s

Let recoil velocity be vR

By the law of conservation of momentum

vR * m2 + v2  * m1 = 0

⇒ vR = - (m1/m2)v2

⇒vR = - (92.4/86.8)*12

⇒vR = - 12.774 m/s

∴ The recoil velocity of the person is 12.774 m/s towards the west. (negative sign shows the opposite direction of velocity)

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Cystic fibrosis is a recessive genetic disorder caused by a mutation in the CFTR gene. It affects the lungs, pancreas, and other organs, causing difficulties in breathing and digestive problems.

Hemophilia is an X-linked recessive genetic disorder that affects blood clotting due to mutations in clotting factor genes. Hemophilia A is caused by a mutation in the F8 gene while hemophilia B is caused by a mutation in the F9 gene.

Duchenne muscular dystrophy is an X-linked recessive genetic disorder caused by mutations in the DMD gene, which codes for a protein called dystrophin. It affects muscle function and leads to muscle weakness and wasting.

Huntington's disease is an autosomal dominant genetic disorder caused by a mutation in the HTT gene. It affects brain function, leading to psychiatric symptoms and movement problems.

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Cystic fibrosis -  autosomal recessive pattern, Hemophilia -  X-linked recessive pattern, Duchenne muscular dystrophy -  X-linked recessive pattern and Huntington's disease - autosomal dominant pattern.

Gene alterations that are essentially present in every cell in the body cause many hereditary diseases. These illnesses thus frequently impact many bodily systems, and the majority cannot be treated. To treat or manage some of the accompanying symptoms, there might be methods available.

Genetic disorders connected to mutations in genes on the X chromosome are referred to as having X-linked recessive inheritance. Because he contains just one X chromosome, a male who carries this mutation will be affected. A female who carries a gene mutation in one X chromosome but has a normal gene on the other X chromosome usually has no symptoms.

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Answer:

6 also

Explanation:

Since Kinetic Energy and mass are directly proportional, as one increases, the other will increase with the same magnitude

Answer: False.Machine efficiency is a measure of how much work is produced by a machine compared to how much energy is required to operate the machine.

The ratio of useful output work divided by the total input work is known as machine efficiency. This number is frequently expressed as a percentage (100 x work output / work input).Example:

For example, if you lift a 50-pound weight 10 feet in the air using a pulley, the work done is 500 foot-pounds. However, if it took 600 foot-pounds of energy to lift the weight, the pulley system's efficiency would be calculated as follows: 500/600 = 0.83 or 83 percent.

The efficiency of a machine is always less than one, in general. It is defined as the ratio of output energy to input energy. Because of losses due to friction and other variables, the output energy is always less than the input energy. As a result, the efficiency of a machine is always less than one.Answer: False.

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Answer:

normal force= 480.2 x component=477.4  y component= 110.4

Explanation:

I'm sorry I just did this today in class but i think normal force has to be equal to mg or the mass * gravity of the person and that would be 480.2 newtons. I multiplied 9.8 (gravity) by the mass of 49g

I think for the x and y components you can make a triangle with the angled string and then use sohcahtoa to solve for the tension. I used cos(13) = x/490 to solve for x component and then I used the pythagoran theroem to get the remaining side which would be : a^2 + 477.4^2 = 490^2

hope this can help and that it is correct. good luck

The magnitudes of the x- and y- components of the tension is 477.44N and 110.23N

The normal force acting on the skier is 480.2N

The magnitude of the x- and y- components of the tension is expressed as:

Given the following

Tension T = 490N

x = 490 cos13° = 477.44N

y = 490sin13° =  110.23N

Hence the magnitudes of the x- and y- components of the tension is 477.44N and 110.23N

The normal force acting on the skier is equal to the weight.

N = W = mg

N = W = 49 * 9.8

N = W = 480.2N

Hence the normal force acting on the skier is 480.2N

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c) both direct and alternating current

Because Ampere's Law, a magnetic field is produced whenever an electrical charge is in motion. So, both kind of currents produces a magnetic field when electrical current is flowing through a wire.

Answer:

0.75kg into gram = 0.75 * 1000 = 750g

potential energy = mgh

potential energy = 750 * 10 * 0.35

potential energy = 2625 joules

Hello, use the formula:

Pe = mgh

Data:

Pe = Potential energy = ¿?

m = Mass = 48 kg

g = Gravity = 9,81 m/s²

h = Height = 7 m

Replacing according our data:

Pe = 48 kg * 9,81 m/s² *  7 m

Pe =3296,16 J

The potential energy of the skateboarder is 3296,16 Joules

Answer:

the first one is higher

Explanation:

i d k what the second one is

Answer: angle = 2°

Explanation:

Let the angle of inclination be θ,

as shown in figure the forces equation on the block are as follows

Fsinθ = ma , where F=mg

mgsinθ = ma

sinθ = \(\frac{a}{g}\)....................eq1

now we know that s = ut  + 1/2at*t

3 = 0+1/2at*t

6 = a*[16.81]

a = 0.357m/s*s

now put value of a in eq1

therefore sinθ = 0.357/9.8=0.0364

angle θ = 2°

Answer:

The flat Earth model is an archaic conception of Earth's shape as a plane or disk. Many ancient cultures subscribed to a flat Earth and due to this people still belive earth is flat but scientist proven earth is round .

Explanation:

Answer:

300 J

Explanation:

From conservation of energy;

Gravitational potential energy at top = Kinetic Energy at bottom

mgh = ½mv²

We are given;

Mass; m = 12 kg.

Height; h = 2.5 m

g = 10 m/s²

Thus;

mgh = 12 × 2.5 × 10 = 300 J

Since mgh = Kinetic Energy at bottom.

Thus; kinetic energy of the ball once it reach the ground = 300 J

We can know that galaxy clusters contain a lot of mass in the form of hot gas that fills spaces between individual galaxies with the use of X-ray Telescopes.

An X-ray telescope may focus the light from an X-ray star onto an electronic eye in the same way that an optical telescope improves our capacity to view dim stars. An imaging detector can see several X-ray-generating objects at the same time or make images of diffuse X-ray emission zones.

It has been used to detect intermediate-mass black holes and examine ultraluminous X-ray sources. NuSTAR, the most current X-ray mission launched, is focused to monitoring hard X-rays (higher-energy X-rays than can be observed by other orbiting X-ray telescopes).

X-ray astronomers' stunning findings, such as neutron stars and black holes in binary systems and hot gas filling the space among clusters of galaxies, have transformed our understanding of the Universe.

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Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to its resistance. This can be expressed mathematically as I = V/R, where I is the current, V is the voltage, and R is the resistance.

In practical terms, this means that if the voltage applied across a circuit remains constant, increasing the resistance will result in a decrease in current flow. Conversely, if the resistance remains constant, increasing the voltage will result in an increase in current flow.
It's important to note that Ohm's law only applies to materials that exhibit a linear relationship between current and voltage, known as Ohmic materials. Non-Ohmic materials, such as diodes and transistors, do not follow this relationship and require more complex equations to describe their behavior.
In summary, Ohm's law provides a fundamental understanding of the relationship between current, voltage, and resistance in electrical circuits and allows engineers and technicians to design and troubleshoot electrical systems.

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Answer:

CODIS should be the answer

Answer:

energy:

-the strength and vitality required for sustained physical or mental activity.

-power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.

Explanation:

Answer:

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.

Explanation:

ANSWER

EXPLANATION

Parameters given:

Speed of electron, v = 4.10 * 10^3 m/s

Magnetic field, B = 1.45 T

Magnetic force, F = 1.40 * 10^(-16) N

To find the angle that the velocity of the electron makes with the magnetic field, apply the formula for magnetic force:

where θ = angle

q = electric charge = 1.6 * 10^(-19) C

Make θ the subject of the formula:

Therefore, the angle that the velocity makes is:

To find the second angle, subtract the angle from 180 degrees:

The angles are:

Mass and weight are two concepts that are often confused, but they have a critical distinction. Mass refers to the amount of matter in an object, while weight is the force that the object exerts on the ground due to gravity.

Mass is a scalar quantity that measures the amount of matter contained in an object. The SI unit of mass is the kilogram (kg). The mass of an object is the same regardless of its location in the universe. So, my mass is 60 kg.

Weight is a vector quantity that measures the force exerted on an object by gravity. The SI unit of weight is the Newton (N). It is calculated by multiplying the mass of an object by the acceleration due to gravity, which is approximately 9.81 m/s² on Earth.

So, my weight can be calculated as follows:

Weight = mass x acceleration due to gravity
Weight = 60 kg x 9.81 m/s²
Weight = 588.6 N

Therefore, my mass is 60 kg, and my weight is 588.6 N. The difference between mass and weight is that mass is an intrinsic property of an object, whereas weight depends on the object's mass and the gravitational force acting on it.

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Answer:

Hi... Your answer is impulse

Answer:

Air temperature and air pressure both decreases

Answer: A

Explanation: