Select all the correct answers.
Which chemical reaction involving water is a decomposition reaction (breaking up) and which is a synthesis (building up)
reaction? If you're not sure, take a guess.
Water breaking down into hydrogen and oxygen is a synthesis reaction.
Water breaking down into hydrogen and oxygen is a decomposition reaction.
Hydrogen and oxygen combining to form water is a synthesis reaction.
Hydrogen and oxygen combining to form water is a decomposition reaction.

Every photon has some energy within it and that energy is called photon energy.

The energy of photon is \(2.38\times10^{-18}\;\rm J\).

Given that, frequency of the photon is \(3.6\times10^{15}\;\rm Hz\) and Planck's constant is \(6.626\times {{10}^{-34}}\).

So the energy of the photon can be calculated by the given formula.

\(E=h\nu\)

Where \(h\) is plank's constant and \(\nu\) is the frequency of the photon.

By substituting the values in the above formula, the photon energy is,

\(E=6.626\times10^{-34}\times3.6\times10^{15}\;\rm J\)

\(E=2.38\times10^{-18}\;\rm J\)

The energy of photon is \(2.38\times10^{-18}\;\rm J\).

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Brands measure ad effectiveness to determine the return on investment (ROI) for their advertising campaigns and to evaluate their success in achieving their marketing objectives.

Advertising is a form of communication that promotes or sells a product, service, or idea to a target audience. The purpose of advertising is to inform, persuade, and remind potential customers about a product or service in order to influence their purchasing decisions. Advertising can be conducted through various media channels such as television, radio, print, outdoor, online, and mobile. Advertising is often used by businesses, non-profit organizations, and government entities to reach a large audience and create awareness about their products, services, or campaigns. Effective advertising requires careful planning and execution, including the development of a target audience, the selection of appropriate media channels, and the creation of a message that appeals to the audience. Advertising can also be controversial and raise ethical questions, especially when it involves deceptive or misleading claims, privacy concerns, or political or social issues.

Measuring ad effectiveness helps brands understand which ads are resonating with their target audience, which channels and tactics are driving the most engagement and conversions, and how to optimize their marketing spend for maximum impact. It also provides insights into what is working well and what needs to be improved, enabling brands to make data-driven decisions and continuously improve their advertising strategies. Ultimately, measuring ad effectiveness helps brands maximize the impact of their advertising budget and achieve their business goals.

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Answer:

2 \(m/s^{2}\)

Explanation:

Acceleration = \(\frac{Final velocity-Initial velocity}{Time}\)

= \(\frac{20 - 10}{5}\)

= \(\frac{10}{5}\)

= 2 \(m/s^{2}\)

Answer:

1. where the skater turns and goes back in the opposite direction- point w

2. gravitational force of the object

3. point a

4. the bar representing sphere 4 should be twice as tall as the bar representing sphere 2

5. B; its mass is smaller (?)

yolo

Answer:

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Explanation:

To navigate reversible lanes, drive in the inner lanes corresponding to your desired direction, or stay in the outer lanes for slower traffic. Follow signs and signals for guidance.

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Answer:

3.94

Explanation:

divide total mass by the number of blocks since they are identical

Answer:

3.94

Explanation:

You want to find the mass of one block. Since we know there is 8 blocks with the same mass, you can divide the total mass by 8 since the mass is equally distributed within the 8 blocks

The distance of the object from the mirror's vertex is 10 cm.

We can use the mirror equation:

1/f = 1/o + 1/i

where f is the focal length, o is the distance of the object from the vertex, and i is the distance of the image from the vertex. Since the mirror is convex, the focal length is negative.

Let's assume that the object is placed in front of the mirror, so o is positive. We also know that the image height (h') is half the object height (h). Therefore, the magnification (m) is:

m = h'/h = 1/2

We can write the magnification in terms of the distances:

m = -i/o

Substituting m = 1/2, we get:

1/2 = -i/o

or

i = -o/2

Now we can use the mirror equation to find the distance of the object from the vertex:

1/f = 1/o + 1/i

1/-10cm = 1/o + 1/(-o/2)

-1/10cm = 2/o - 1/o

-1/10cm = 1/o

o = -10cm

Since o is positive, the object is placed 10 cm in front of the mirror.

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The distance of the object from the mirror's vertex is 15 cm. Considering a convex spherical mirror that has focal length of f=−10.0cm .

Answer:

I think it is behavioral

We are given the following information about an inelastic collision.

Mass of 1st object = 4 kg

Mass of 2nd object = 10 kg

Initial velocity of 1st object = 25 m/s

Final velocity of both objects = 14 m/s

Initial velocity of 2nd object = ?

In an inelastic collision, the momentum is conserved but the kinetic energy is not conserved.

Recall that the total momentum is conserved and given by

Let us substitute the given values and solve for initial velocity of the body (u2)

Therefore, the initial velocity of the body of mass 10 kg is 9.6 m/s

Water will have the higher surface tension since it exhibits **stronger intermolecular forces** when compared to acetone.

Surface tension is a property of liquids that arises from the cohesive forces between molecules at the surface. In water, the intermolecular forces, specifically hydrogen bonding, are relatively strong, leading to a higher surface tension. These hydrogen bonds create a network of cohesive forces that hold the water molecules together, causing the surface to behave like a stretched elastic sheet.

Acetone, on the other hand, is a smaller molecule and does not exhibit as strong intermolecular forces compared to water. The intermolecular forces in acetone, such as dipole-dipole interactions and London dispersion forces, are weaker than the hydrogen bonding in water. As a result, acetone has a lower surface tension than water.

Therefore, water will have the higher surface tension due to its stronger intermolecular forces.

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Answer: 81 1/2 moons would be needed to equal the amount of mass of Earth

Explanation:

Answer:

Electrolytic manganese dioxide (EMD) is used in zinc-carbon batteries together with zinc chloride and ammonium chloride. EMD is commonly used in zinc manganese dioxide rechargeable alkaline (Zn RAM) cells also. For these applications, purity is extremely important.

Explanation:

hope this helps...

When a permanent magnet is placed on top of a straight wire, a magnetic field is produced in the region surrounding the wire due to the motion of charges in the wire. The magnetic field produced by the wire interacts with the magnetic field of the permanent magnet and causes a force to be exerted on the wire.

The direction of the force is perpendicular to both the magnetic field and the current in the wire. If the wire is not fixed in place, it will experience a force and move in a direction that is perpendicular to both the magnetic field and the current in the wire. This phenomenon is known as the Lorentz force, which is the force that is exerted on a charged particle when it moves in an electromagnetic field.

The direction of the force is given by the right-hand rule, which states that if the thumb of the right hand points in the direction of the current, and the fingers point in the direction of the magnetic field, then the palm of the hand will point in the direction of the force. The magnitude of the force is proportional to the current in the wire and the strength of the magnetic field.

Therefore, the stronger the magnetic field or the current, the greater the force that is exerted on the wire. The Lorentz force is the basis for the operation of many devices such as motors, generators, and transformers.

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Answer:

4 m/s in negative acceleration

Explanation:

Acceleration = V- U/t

Where V is the final velocity

U is the initial velocity and t is the time given.

U = 65 m/s

V= 25 m/s

T= 10 seconds

Acceleration= (25m/s - 65m/s)÷10secs

= - 40/10

= -4m/s^2

Hence, it has a negative acceleration.

Answer:

A. negative acceleration of 4 m/s2

Hope this helps!

Explanation:

The radius of the event horizon for a black hole is measured by the Schwarzschild Radius.

Hence, the correct option is B.

The Schwarzschild Radius is a characteristic length scale associated with a non-rotating, spherically symmetric black hole.

It represents the radius of the event horizon, which is the boundary beyond which nothing, including light, can escape the gravitational pull of the black hole.

It is denoted by the symbol "rs" and is calculated based on the mass of the black hole. The Schwarzschild Radius determines the size of the event horizon and plays a crucial role in defining the properties of a black hole.

Therefore, The radius of the event horizon for a black hole is measured by the Schwarzschild Radius

Hence, the correct option is B.

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The two things that must exist for an electric current to be produced are:

An electric potential between two bodies and a conducting path joining the bodies.

This comes from the fact that when there is a potential difference there is an electrical field and hence a force that makes some free charges to move in the conductor. For this reason, there's an electrical current.

Answer: An electric potential between two bodies and a conducting path joining the bodies

Given :

The inertia of an object is related to its: a. Mass and speed, b. Mass and force, c. Mass only, d. Speed only.

Solution :

Inertia is the tendency of an object to continue its current state i.e. motion and rest.

Now, inertia only depends on mass of the object.

If mass of object is too huge. It is hard to to change its current state in comparison to object of small mass.

Therefore, correct object is c. Mass only.

Answer:

OWOWOWOOWOWOWEO. PORK = PORK NOW GIOVE BRAINLIEST BC I SAID PORK = PORK

Explanation:

Answer:

0.5 m/s

Explanation:

In  solving this, we would be applying the principle of conservation of momentum. This states that momentum is conserved, and thus, Initial momentum has to be equal to the final momentum. This also means that it can be related by the formula

M * u = m * v, where

M = mass of the astronaut

m = mass of the wrench

u = speed of the astronaut

v = final speed of the wrench

70 * u m/s = 1.6 * 22 m/s

70u = 35.2 m/s

u = 35.2/70

u = 0.5 m/s

A scientific law is an established principle that explains a phenomenon or behavior in the natural world. It is a concise statement that summarizes the results of many observations and experiments and is widely accepted as true because it has been confirmed over and over again.

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The deltoid muscle plays a crucial role in keeping our arm and the object at a fixed height when we hold a weight at arm's length at the height of our shoulder. In order to estimate the tension in the deltoid muscle, we need to consider the forces acting on the arm and the object.

Gravity is one of the forces acting on the arm and the object, with the arm's weight acting on the center of gravity (CG) and the small object's weight exerting a force Fw all the way at the end of the arm. The deltoid muscle exerts a force at an angle of 15 degrees, which helps to keep the arm and the object at a fixed height.

A. To calculate the torque exerted by F8-A, we need to multiply the force by the distance from the origin (O). Therefore, the torque exerted by F8-A is 72 N.m (force of 8 N multiplied by the distance of 9 cm).

B. To calculate the torque exerted by FW-A, we need to multiply the force by the distance from the origin (O). Therefore, the torque exerted by FW-A is 66 N.m (force of 6 kg multiplied by the distance of 11 cm).

C. For the arm+object system to be static, the torque exerted by the deltoid muscle needs to be equal and opposite to the torque exerted by the other forces. Therefore, the torque exerted by the deltoid muscle is 6 N.m (difference between the torques exerted by F8-A and FW-A).

D. If the system is in equilibrium, the tension in the deltoid muscle (Fr) must be equal to the weight of the arm and the object. Therefore, the magnitude of the tension in Newtons is 156 N (weight of the arm and object is 156 N).

E. In order for the system to be truly in static equilibrium, there must be a force on the arm acting at the origin (O) exerted by the scapula. The x- and y-components of this force are not given in the problem.

F. To minimize the tension on the deltoid muscle, we need to minimize the torque exerted by the other forces. This can be achieved by changing the angle at which the deltoid muscle exerts its force. Assuming that all other forces remain the same, the angle that would minimize the tension on the deltoid muscle is 90 degrees (perpendicular to the arm).

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Answer: Use Roman Numerals in answering. 11. - 27310189. ... Hiwalay! Hatol. Unang puntos, Bughaw! 12. Hinto! Pula, pangalawang laglag. Panalo ...

Explanation:. Hinto! Hiwalay! Bughaw, 1 puntos. Unang paglabag! 14. Hinto! Bughaw, pangalawang paglabag

The angle of refraction is a. 15°

Snell's law is described as “The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light of a given colour and for the given team of media”.

By Snell's law:

η = sin i / sin r. i = 25, η = 1.6

1.6 = sin25° / sin r

sin r = sin25° / 1.6

= 0.4226/1.6= 0.2641

calculating

r = sin⁻¹( 0.2641 )

sin−1(0.264) is ≈ 15.3075

the angle of refraction is a. 15°

So the angle associated with the incidence and refraction can have a relation to the refractive index of the two mediums. Snell's First Law: It states that the incident ray, the refracted ray and the standard lie on the same plane.

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Answer:

Vector Quantity: A physical quantity is said to be a vector quantity when it has both magnitude and direction. The scalar quantities are distance, mass, time, volume, density, speed, temperature, and energy, The vector quantities are weight, velocity, acceleration, and force.

Explanation:

Mark me brainleist PLZZZZ

The correct answer is 0.513 Nm torque must be applied to the wheel for its angular acceleration to be 135 rad/s2.

Torque is the rotating equivalent of force in physics and mechanics. Depending on the subject of study, it is also known as the moment, moment of force, rotating force, or turning effect. It illustrates how a force can cause a change in the body's rotational motion. In his famous adage, "Give me a lever and a place to stand, and I shall move the Earth," Archimedes, who studied the use of levers, is credited with developing the idea. Torque can be thought of as a twist to an item about a particular axis, much as a linear force is a push or a pull.

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The total zoom available on a camera is determined by digital zoom added to optical zoom.

Optical zoom refers to the physical movement of the lens elements to magnify the image, while digital zoom is a software-based feature that enlarges the center portion of the image by cropping and interpolating the pixels.

While optical zoom produces higher quality images with no loss of detail, digital zoom can result in a decrease in image quality due to pixelation and loss of resolution.

The total zoom available on a camera is determined by adding the maximum magnification of the optical zoom to the maximum magnification of the digital zoom.

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To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.

can u figure it out from there but if anything i think it is  C

To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.

can u figure it out from there but if anything i think it is  C

Answer:

The loudness of sound is most closely related to

The pressure within a sound wave determines the loudness of the sound. In this lesson, learn how to calculate the sound pressure level of a sound wave and what this measurement represents.

Explanation: