a local am radio station broadcasts at an energy of kj/photon. () calculate the frequency at which it is broadcasting.

Answer:

Explanation:

A thermos helps prevent heat loss when the thermos is holding a hot substance and then helps prevent heat gain when the thermos is holding a cold substance. So a thermos can keep hot things hot and cold things cold.

Hi there!

Using the Impulse-Momentum theorem:

I = Δp = mΔv

Where:

I = Impulse (Ns)

m = mass of object (kg)

Δv = change in velocity (vf - vi, m/s)

Plug in the given values and solve:

60 = 5Δv

Δv = 12 m/s

16.77m is the lemming's change in height when it reaches the water.

A thing is said to be in projectile motion when it has been fired into the air. After the initial force that launches the object, it only experiences the force of gravity. It is what it is—a projectile—and the path it took to get there is what it was.

You can tell from the situation that this projectile is a Type 1 projectile, or a horizontal projectile. Before you can resolve this issue, you will need a few things.

You must first examine the information you were given:

Vix = 2.87 m/s

dx = 5.32m

Your height or vertical distance are what you need. The following is the usual formula for projectile displacement:

d = Vit +1/2gt²

Specifically, you only need to enter the y-components to obtain the vertical distance. Now keep in mind that a horizontal projectile initially moves only forward and not vertically. Your vi = om/s, leaving you with the following equation:

dy = Viyt + 1/2 gt²

dy = (0m/s)t + 1/2 gt²

dy = 1/2 gt²

However, if you examine your issue, you will discover that no time has been allotted. You can resolve it using the information provided by deriving it from the x component formula:

dx = Vixt

Plug in your knowledge and find a solution for your ignorance.

dx = Vixt

5.32m = (2.87m/s)t

5.32/2.87= t

t = 1.85s

You can solve for your vertical distance/displacement now that you know the time:

dy = 1/2 gt²

dy = 1/2 (9.8 × 1.85²)

dy = 16.77m.

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Answer:

the answer is -16.8

Explanation:

it’s negative because your going down and you have to round off to match the significant digits.

Answer:

Below

Explanation:

If they are all in parallel, the quivalent resistance is given by

            1                     =    3.6 Ω

  1/R1   + 1/R2  + 1/R3

The current if 55C of charge pass a particular point in a circuit in 5 seconds is 11A.

One kind of electrical charge carrier that moves as current are electrons. From negative to positive areas, current flows. The ampere is the SI unit used to measure electric current (A). One coulomb of electrical charge travelling over a given region in one second is referred to as an ampere of current.

Similar to how current is widely employed in relation to electronic circuits, voltage is also. Voltage is measured using volts (V). Similar to how current and current are related, voltage and the flow of electrons in a circuit are as well. Current is the flow of electrons, whereas voltage is the amount of force driving the flowing electrons.

At higher voltages, current flows more freely; at lower voltages, current is weaker.

Given,

Electrical charge = 55 C

Time = 5 secs

Therefore current = 55 / 5 A

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Answer:

Sarah's classmate is incorrect. The photo shows the slight effect of gravity on the hillside but it is not a process

associated with mass wasting.

Explanation:

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To find the specific heat at constant volume of a gas, you need to measure the change in internal energy of the gas when it is heated at constant volume.

The specific heat at constant volume can then be calculated using the equation:

C_v = ΔU / mΔT

where ,

ΔU is the change in internal energy,

m is the mass of the gas, and

ΔT is the change in temperature.

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Answer:

Statement of the given problem,

A ball is thrown vertically upwards at 19.6 m/s. For its complete trip (up and back down to the starting position), what is its average speed?

Let H & T denote the maximum height (in m) of the given ball & the time (in s) required for it to reach there.

Hence from above data we get following kinematic relations,

T = [19.6 m/s - 0 m/s)]/(9.8 m/s^2) [9.8 m/s^2 = gravitational acceleration (assumed)]

or T = 2 (s)

H = (19.6 m/s)*(2 s) - (1/2)*(9.8 m/s^2)*(2 s)^2

or H = 19.6 (m)

Therefore,

assuming vertically upward & downward motions are identical with respect to time & distance covered by the given ball,

the required average speed of the ball during its travel up and back down to the starting position

= (total travel-distance)/(total travel-time)

= 2*(19.6 m)/[2*(2 s)]

= 9.8 m/s [Ans]

In electrical work, resistance is often represented by the symbol "R."Resistance is an electrical component that reduces the flow of electrical current through a circuit.

It is a property of an object that impedes the flow of electrons, causing electrical energy to be transformed into heat energy. In electrical circuits, resistance is measured in units known as ohms, denoted by the symbol Ω.The  answer to the question is: In electrical work, resistance is often represented by the symbol "R."Resistance is a property of an object that impedes the flow of electrons, causing electrical energy to be transformed into heat energy. In electrical circuits, resistance is measured in units known as ohms, denoted by the symbol Ω.

Electricity is an essential element of our lives, and we use it every day to power our devices and appliances. Electrical resistance is a crucial concept in electrical work, and it is used to measure how much resistance a material offers to the flow of electrical current through it.

Resistance is measured in units of ohms, and it is represented by the symbol "R."Resistance is an important concept in electronics because it determines how much current flows through a circuit. When there is too much resistance, electrical current slows down, and energy is transformed into heat, which can damage electronic components. Resistance is also important in circuit design because it helps to regulate the flow of electrical current through a circuit.

In conclusion, resistance is an important concept in electrical work, and it is represented by the symbol "R." Resistance is measured in units of ohms and is a property of an object that impedes the flow of electrons. By understanding resistance, electrical engineers and technicians can design and build circuits that are efficient and safe.

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We will have that kinetic energy is different from potential energy as follows:

Kinetic energy is energy of a moving object, whereas potential energy is energy possessed by matter as a result of its location or structure. [Option C]

Answer:

It is because of the gravity. Gravity pulls things down to an planet/star, but a space probe is far enough from the Earth, so it is pulled into the Earth's orbit.

Answer:

kgm/s(-1)

Explanation:

the units of momentum will be the product of the units of mass and velocity. Mass is measured in kg and velocity in ms-1, therefore, the SI unit of momentum will be kgm/s(-1).

Answer:

The coefficient of static friction between the ground and the soles of a runner’s shoes is 0.98. What is the maximum speed in which the runner can accelerate without slipping if they have a mass of 73 kg?

Explanation:

The required value of distance covered by the child during sliding is of 6.08 m.

Given data:

The mass of child is, m = 48 kg.

The coefficient of friction between the child and floor is, \(\mu = 0.51\).

The initial velocity of the child is, u = 7.8 m/s.

Applying the work-energy theorem, which says that the work done by the frictional force is equal to the kinetic energy change. Then,

\(W = \Delta KE \\\\f \times s = \dfrac{1}{2}mv^{2}- \dfrac{1}{2}mu^{2}\)

Here, f is the frictional force and s is the stopping distance.

Solving as,

\(-(\mu \times mg) \times s = \dfrac{1}{2}mv^{2}- \dfrac{1}{2}mu^{2}\\\\-\mu \times g \times s = \dfrac{1}{2}(0)^{2}- \dfrac{1}{2}u^{2}\\\\-0.51 \times 9.8 \times s = - \dfrac{1}{2} \times 7.8^{2}\\\\s = 6.08 \;\rm m\)

Thus, we can conclude that the required value of distance covered by the child during sliding is of 6.08 m.

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Answer:

V = 268.8 m/s

Explanation:

The speed of a wave in general is given by the following formula:

V = fλ

where,

V = Speed of that wave

f = Frequency of the wave

λ = wavelength of the wave

In this case we have a sound wave, travelling across carbon dioxide. The properties of sound wave are as follows:

V = Speed of Sound in Carbon dioxide = ?

f = frequency of sound wave = 140 Hz

λ = wavelength of sound wave = 1.92 m

Therefore,

V = (140 Hz)(1.92 m)

V = 268.8 m/s

Answer:

V = √ ( 6.65² + 9.87² ) ≈ √ 141.64 = 11.90 mph

Answer:

La galvanoplastia o electrodeposición es una aplicación práctica de la electroquímica. Se trata de una técnica basada en los principios electroquímicos, en donde se aplica una o varias capas de un metal seleccionado sobre un objeto receptor, por lo general, también metálico.

Explanation:

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Therefore, the magnitude of the acceleration of the box is 0.01 m/s^2.The correct option is none of the above a.

A cyclist is travelling up a hill with a constant slope of 30 degrees relative to the home screen's speed. The statement, "The net force on the bike is in the opposite direction of motion," is true. It is caused by friction, gravity, and the normal force. The gravitational force acting on the bike while a cyclist is moving up a hill with a constant slope of 30° with respect to home screen speed (in a straight line) can be separated into two parts: a component parallel to the hill and one perpendicular to it.  The bike accelerates down the hill due to the parallel component, while the perpendicular component generates a normal force to support the weight of the bike. Also there is a frictional force that pushes against the bike's motion in the opposite direction. Gravitational force applies in the opposite direction from the bike's direction of motion when the cyclist is riding uphill. Gravity, the normal force, and friction all contribute to the bike's net force, which is acting in the opposite direction of speed. The right answer is c. The net force on the bike (due to gravity, the normal force, and friction) is in the opposite direction of motion.P2: A 2.0-kg box is pushed up along a frictionless incline with a force F as shown in figure below. The magnitude of F is 19.6 N, what is the magnitude of acceleration of the box?The free body diagram of the 2.0-kg box is as shown below:free body diagram of 2.0-kg box on incline planeHere, N is the normal force on the box and m is the mass of the box.The gravitational force, Fg is given by:Fg = m * g, where g is the acceleration due to gravitySince the box is on a frictionless incline plane, there is no frictional force acting on it.Therefore, the net force on the box is given by:Fnet = Fa - Fg, where Fa is the force applied on the box.The magnitude of the force applied is given as Fa = 19.6 N.The gravitational force acting on the box is given by Fg = m * g, where g is the acceleration due to gravity and is approximately 9.81 m/s^2.The magnitude of the gravitational force acting on the box is Fg = 2.0 kg * 9.81 m/s^2 = 19.62 N.Therefore, the net force acting on the box is:Fnet = Fa - Fg = 19.6 N - 19.62 N = -0.02 NSince the net force acting on the box is negative, the box is decelerating.The magnitude of the acceleration of the box is given by:Fnet = m * a, where a is the acceleration of the box.Therefore, the magnitude of the acceleration of the box is:a = Fnet / m = -0.02 N / 2.0 kg = -0.01 m/s^2. Therefore, the magnitude of the acceleration of the box is 0.01 m/s^2.The correct option is none of the above a.

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We have discovered meteorites with ALL of the following sources, EXCEPT one being a piece of the comet Halley, among the identified meteorites.

Our solar system is where all meteorites originate. Most of them are pieces of ancient asteroids that shattered into smaller pieces in the asteroid belt, which is situated between Mars and Jupiter.

Asteroids are remains of the solar system's creation, which occurred around 4.6 billion years ago. Early on, the formation of Jupiter stopped any planetary bodies from forming in the space between Mars and Jupiter, causing the small particles that were already present to smash and shatter into the asteroids we know today.

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a) To find the speed of the signal in water, we can use the equation:

Speed = Wavelength x Frequency

Where Wavelength is given as 1.5 mm and Frequency is given as 1 x 10^6 Hz.

Speed = 1.5 x 10^-3 m x 10^6 Hz = 1.5 x 10^3 m/s

So the speed of the signal in water is 1.5 x 10^3 m/s

b) To find the period in water, we can use the equation:

Period = 1 / Frequency

Where Frequency is given as 1 x 10^6 Hz

Period = 1 / (1 x 10^6) s = 1 x 10^-6 s = 1 microsecond

So the period of the signal in water is 1 microsecond

c) The speed of sound in air is approximately 343 m/s. Since the frequency of the signal remains constant and the speed of sound in air is different than the speed of sound in water, the wavelength of the signal will also be different. However, since the period is inversely proportional to the frequency and is independent of the medium, the period of the signal in air will be the same as in water, which is 1 microsecond.

The center of mass of the two-car system can be found by taking the weighted average of the velocities of the two cars.

The velocity of the center of mass is the average of the two cars' velocities, weighted by their masses. The velocity of the center of mass is:

Velocity of Center of Mass = (1.27 x 103 kg x 11.6 m/s + 1.70 x 103 kg x 11.6 m/s) / (1.27 x 103 kg + 1.70 x 103 kg) = 11.60 m/s.

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Answer:

Because the light only spears to part of the water so it would appear less deep

Answer:

When an acid and a base are placed together, they react to neutralize the acid and base properties, producing a salt.

Explanation:

Answer:

What was her acceleration and distance she moved during her ... Identify the following as a scalar or vector: the mass of an object, the number of leaves on a ... Once the chair is in motion, a 127 N horizontal force keeps it moving at a constant velocity. a. ... A 65 kg skater standing on frictionless ice throws a 0.15 kg snowball ...

Explanation:

The correct answer is e. None of the above alternatives gives a true statement. None of the statements in options a, b, c, and d are true when it comes to a modulus M over a ring R having a finite basis.

When a modulus M can be formed entirely from a finite set of elements, the modulus M is said to be finitely generated. M's finite basis does not, however, automatically imply that M is finitely generated. A basis is a set of linearly independent elements, and it might not be enough to produce all of the components of the modulus.

According to the assertion in option b, M must include nonzero items of nonzero order if it has a finite basis. This is untrue, though. The smallest positive number k, such that the element raised to the power of k equals the identity element, is referred to as the order of an element.

According to option c, every non-null element in a modulus with a finite basis has a null. Nevertheless, this claim is likewise untrue. It is possible for a modulus with a finite basis to have non-null elements without a null element.

According to option d, a ring R is a body, or a field, and only then can a modulus have a finite basis. However, this assertion is also untrue. Even though the ring R is not a field, a modulus can nonetheless have a finite basis. None of the given alternatives provides a true statement about a modulus M over a ring R having a finite basis.

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