nitrogen . oxygen . reflects radio waves . amount of radiation reflected . amount of solar radiation reaching ground . carbon dioxide . absorbs ultraviolet rays

Answers

Answer 1

Nitrogen- 78% of atmosphere; oxygen- 21% of atmosphere; reflects radio waves- ionosphere; amount of radiation reflected- 40%; amount of solar radiation reaching ground- 40%.

What does the total radiation that a surface reflects have a name?

Albedo, which is typically given as a percentage or a decimal value, is the amount of solar radiation that a surface reflects, with 1 being the ideal reflector and 0 completely absorbing all incoming light.

Detailed answer of the given question.

nitrogen- 78% of atmosphere

oxygen- 21% of atmosphere

reflects radio waves- ionosphere

amount of radiation reflected- 40%

amount of solar radiation reaching ground- 40%

carbon dioxide- needed for photosynthesis

absorbs ultraviolet rays-ozonosphere

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Related Questions

The tip of one prong of a tuning fork undergoes SHM of frequency 842 Hz and amplitude 0.518 mm. For this tip, what is the magnitude of the (a) maximum acceleration, (b)maximum velocity, (c) acceleration at tip displacement 0.257 mm, and (d) velocity at tip displacement 0.257 mm?

Answers

Simple harmonic motion is described as the periodic motion of a point along a straight line with an acceleration that is always toward a fixed point in that line and a distance from that point that is proportional to that acceleration.

The force driving the movement is always pointed in the direction of the equilibrium position and is inversely proportional to the separation from it. F = kx, where F is the force, x is the displacement, and k is a constant, is what this means. Hooke's law is the name of this relationship.

The vibrating of a mass coupled to a vertical spring, the other end of which is anchored in the ceiling, is a specific illustration of a basic harmonic oscillator. The spring is at its highest stress at the maximum displacement x, which drives the mass higher.

The acceleration amplitude is  am = ω²хm  , where  ω  is the angular frequency (ω=2πf  since there are  2π radians in one cycle). Therefore, in this circumstance, we obtain

am = {2π(842 Hz)}² (0.000518m)

     = 1.4483 = 1.4 × 10⁴ m/s².

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a projectile is fired with an initial speed of 65.2 m/s at an angle of 34.5 degrees above the horizontal on a long flat firing range. determine the max height, the total time in air, the total horizontal distance covered, and the velocity of the projectile 1.50 s after firing.

Answers

a starting speed is 65.2 m/s at the a 34.5 degree angle above vy = 22.229 I rounded up to 22.2 m/s.

An effort at a solution In order to begin, I needed to determine the beginning speed in the x and y directions. To do this, I first created a right triangle with an angle of 34.5 and a hypotenuse of 65.2 m/s. From there, I calculated the opposite (sin34.5 = opp/65.2), which gave me the result of 36.929. Next, I calculated the neighboring (cos34.5 = adj/65.2) & obtained 53.733. My Xo is next to it, and my Yo is to the contrary.

How can the speed of a bullet at a specific moment be determined?

V y = V y Zero g t is the equation. An online tool that determines vertical velocity is called the Missile Motion for Horizontal Velocity Calculatorthe particle moving like a projectile.

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A sinusoidal electromagnetic wave is propagating in a vacuum in the +z-direction. If at a particular instant and at a certain point in space the electric field is in the +x-direction and has a magnitude of 4.00 V/m, what is the magnitude of the magnetic field of the wave at this same point in space and instant in time? What is the direction of the magnetic field?

Answers

1.3x10^-8 T  is the direction of the magnetic field.

What is magnetic field?

According to mathematics, the electric field is described as a vector field that may be connected to each point in space and represents the force per unit charge that is applied to a positive test charge that is at rest at that location. Either the electric charge or time-varying magnetic fields can produce an electric field.

What is electromagnetic wave?

A magnetic field and an electric field vibrate together to produce electromagnetic waves, often known as EM waves. In other terms, magnetic and electric fields that are oscillating make up electromagnetic waves (EM).

E/B = c

B = E/c = 3.9/(3x10^8) = 1.3x10^-8 T

Therefore, 1.3x10^-8 T  is the direction of the magnetic field.

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a spacecraft of dry weight 50,000 lbf leaves earth with 180,000 lbf of fuel on board and flies to a planet where the acceleration due to gravity is 12 ft/s2. during the flight to the planet, 2/3 of the fuel is consumed. how much thrust does the rocket need to insure liftoff from the planet?

Answers

Weight must be larger than thrust. Consider a missile with a payload of 10 kg as an illustration. It is being pulled downward by gravity with a force of 10 x 9.8, or 98 N. The force must be more that 98 N in order to lift the rocket off of the launch pad.

How are rockets able to take off from Earth?

The rocket is still being dragged downward by Earth's gravity. Thrust is the upward force produced when a rocket consumes propellants and exhales. The rockets needs enough propellants before launch so that the gravity force pulling the rocket down is higher than the thrust propelling the rocket upward.

What speed must a rocket travel at in order to launch itself into space?

Escape velocity is the speed of around 11 km per s required to escape the gravity of our planet.

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A microwave oven operates at 2.4 GHz with an intensity inside the oven of 2700W/m2 .What is the amplitude of the oscillating electric field?What is the amplitude of the oscillating magnetic field?

Answers

The oscillating magnetization has an amplitude of 475.47 T and the electromagnet field has an amplitude of 1.42 * 10¹¹ V/m.

What exactly is a "electric field"?

A characteristic of electricity existing at every location in space once charge of any kind is present. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the direction and intensity of the electron beam.

I = Flux = 2700 W/m²

c = Speed of light = 3 * 10⁸m/s

μ₀ = vaccum permeability = 4π * 10⁻⁷H/m

The magnetic field's fluctuating amplitude

[tex]$$\begin{aligned}& B_0=\sqrt{\frac{2 \mu_0 I}{c}} \\& \Rightarrow B_0=\sqrt{\frac{2 \times 4 \pi \times 10^{-7} \times 2700}{3 \times 10^8}}\end{aligned}$$[/tex]

B₀ = 475.47 T

The oscillatory magnetization has an amplitude of 475.47 T.

The size of the electric field's oscillations,

E₀ = c * B₀

E₀ = 3 * 10⁸ * 475.47

E₀ = 1.42 * 10¹¹ V/m

The oscillating electric field's amplitude is 1.42 * 10¹¹ V/m

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Mike jumps 1.00 meters down onto a concrete walkway. His downward motion stops in 0.02 seconds. If he forgets to bend his knees, what force is transmitted to his leg bones?a. 15,500Nb. 7,010Nc. 4,900Nd. 3,500N

Answers

The force transmitted to mike's leg is 39200N. So option A is correct.

To calculate the force transmitted to Mike's leg bones, we can use the formula:

force = mass x acceleration

We can calculate the acceleration using the formula:

a = (fv - iv) / t

fv is the final velocity (0 m/s since his downward motion stops)

iv is the initial velocity (we can assume it to be 9.8 m/s, the acceleration due to gravity)

t is the time it takes for his downward motion to stop (0.02 seconds)

So,

a = (0 - 9.8) / 0.02 = - 490 m/s^2

The mass of Mike is not given in the question, so we can assume it to be 80 kg, as a typical human mass.

force = mass x acceleration = 80 x (-490) = - 39200 N

The negative sign indicates that the force is in the opposite direction of the acceleration, but since the question is asking for the force exerted on the bone, the negative sign can be ignored.

So the force transmitted to Mike's leg bones is 39200 N

So, the correct answer is option A. 39200N

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a 76 g arrow is fired from a bow whose string exerts an average force of 95 n on the arrow over a distance of 81 cm. what is the speed of the arrow (in m/s) as it leaves the bow?

Answers

The speed of the arrow as it leaves the bow can be 8.9 m/s.

What is speed?

Speed is the rate at which an object moves through space or time. It is a measure of how quickly an object can change its position or the distance it can travel in a given amount of time. Speed is usually measured in units such as meters per second (m/s), kilometers per hour (km/h), or miles per hour (mph). Speed can also be expressed as a fraction or as a percentage. Speed is a crucial factor in many activities, including sports, transportation, and communication. For example, a car's speed is important for safe and efficient travel, and an athlete's speed can determine the outcome of a race. Speed can also be used to measure the performance of computer processors, which are used in almost every modern device.

The calculatiuon is-

Speed = (Force x Distance) / (Mass x Gravity)

Speed = (95 N x 0.81 m) / (0.076 kg x 9.8 m/s2)

Speed = 8.9 m/s

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Imagine that a white car is moving 5km/he west when a yellow car moving 10 km/hr west collides with it from behind. what happens to each car kinetic energy?

Answers

While the yellow car's kinetic energy decreases, the white car's kinetic energy increases. Unless an outside force acts upon a body, Newton's motion law states that it will be at rest or in uniform motion. KE= 1/2mv2 is the formula for kinetic energy.

What does kinetic energy mean in plain English?

The energy that an object possesses as a result or motion is referred to as kinetic energy. We can only accelerate an object by exerting force. Applying force requires effort on our part. Upon completion of the task, the object will indeed be moving at a stable, constant pace since energy has been transmitted to it.

What do you mean by kinetic energy?

Exactly what is kinetic energy? Kinetic energy is a type of power that a thing or particle has as result of the its movement. By being exposed to something like a net force, an object transfers energy through work, accelerating and gaining kinetic energy in the process.

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Calculator
What is the force experienced by a person whose momentum changes by 3kgm/s in 2s?
Give your answer to 1 decimal place.
D1:28/3:42 Change in Momentum
Add any workings here
Force =
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Answers

The force experienced by a person whose momentum changes by 3kgm/s in 2s is 1.5N.

How to calculate force?

The force is defined as rate of change in momentum thus,

Force= Change in momentum/ time

Force= 3/2

Force = 1.5N

How force and momentum related?

The relationship between force and momentum is given by

F=dp/dt. The second law of motion gives the following equation given by Newton. This law states that the change in momentum of an object due to its mass is given by its acceleration, or force.

Force (F) is equal to change in momentum (ΔP) with respect to change in time (Δt). Also, the change in momentum (ΔP) is equal to the momentum (J). Impulse has the same units as impulse (kg*m/s or N*s).

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Calculate the mass (PE= mgh) of a object that has 15J of potential energy sitting on a shelf 3.75m off the ground.

Answers

For the given potential energy, the value of mass equals 0.4Kg.

The energy that was previously stored in the items before they were pushed out of balance by elastic rebound, gravity, or chemical reactions is released when the objects are displaced from their equilibrium locations.

Potential energy is the energy that an object accumulates because of its position, enabling it to perform more work. An extended rubber band, for instance, is full of potential energy. Similar to this, a ball will have more potential energy when released above the ground than when it falls.

Given,

The potential energy = 15J,

height of the object = 3.75m

Using the formula,

PE= mgh

Now substituting the values in the formula,

⇒ 15 = m × 10 × 3.75    [The value of acceleration due to gravity(g) = 10]

⇒ m = 15 / 10 × 3.75

m = 0.4Kg

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A ball is whirled in a horizontal circular path on the end of a string. Predict the path of the ball when the string breaks, and explain your answer.

Answers

The ball will move tangentially to the circle in a straight path due to inertia. The ball may travel in a parabolic direction after the string snaps because of gravity's potential net downward pull.

What exactly is inertia?

A property of matter where it remains at rest or travels uniformly in one direction in the absence of an external force. When the bus stops unexpectedly, people slump forward. When a bus driver suddenly applies the brakes, the upper portion of the body continues to go forward due to the inertia of motion, but the bottom portion of the body stops together with the bus.

Does inertia have a force?

Inertia is what holds the universe together. Literally. The material would not have the electric forces necessary to form its current configuration without it. Moving particles generate heat and kinetic energy, which operate to counteract inertia.

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A student claims that the force on the sides of a tall object submerged in water is the same at all points on the object. Which of the following is evidence that indicates the student is wrong?
answer choices
The pressure of the water increases with depth, so molecules of water must, on average, exert a greater force on a surface at a greater depth.
The force exerted on one side of the object is balanced by the force exerted on the opposite side.
The buoyant force is the result of electrostatic repulsion between electrons in the molecules of an object and the liquid it is in.
The buoyant force is proportional to the volume of the liquid that the object displaces, but this does not support the student's claim that the forces on the sides are equal everywhere.

Answers

The evidence that indicates the student is wrong that the pressure of the water increases with depth, so molecules of water must, on average, exert a greater force on a surface at a greater depth.

What is the object's buoyant force?

The upward force a fluid applies to an item is known as buoyant force. The buoyant force is equal to the weight of the displaced fluid, according to Archimedes' Principle. A body submerged partially or completely in a fluid appears to weigh less because of the buoyant force.

How does a buoyant object affect the amount of water it moves?

The Archimedes principle states that a body submerged in a fluid experiences buoyant force equal to the weight of the fluid the body displaces.

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a wheel 2.00 m in diameter lies in a vertical plane and m rotates about its central axis with a constant angular acceleration of 4.00 rad/s2. the wheel starts at rest at t 5 0, and the radius vector of a certain point p on the rim makes an angle of 57.38 with the horizontal at this time. at t 5 2.00 s, find (a) the angular speed of the wheel and, for point p, (b) the tangential speed, (c) the total acceleration, and (d) the angular position.

Answers

The angular speed of the wheel is 8.00 rad/s. The tangential speed of point P is 16.00 m/s. The total acceleration of point P is 8.00 m/s^2. The angular position of point P is 73.38 rad.

What does velocity mean?

The pace at which an object's position changes as perceived from a particular point of view and as measured by a particular unit of time (for example, 60 km/h northbound) is defined as its velocity.

How can we determined this?

(a) The angular speed of the wheel at t = 2.00 s can be found using the equation for angular acceleration:

ω = ω0 + αt

where ω is the final angular speed, ω0 is the initial angular speed (which is zero, since the wheel starts at rest), α is the angular acceleration, and t is the time.

ω = 0 + (4.00 rad/s^2)(2.00 s) = 8.00 rad/s

(b) To find the tangential speed of point P, we can use the equation:

v = rω

where v is the tangential speed, r is the radius of the wheel (2.00 m), and ω is the angular speed (8.00 rad/s).

v = (2.00 m)(8.00 rad/s) = 16.00 m/s

(c) The total acceleration of point P can be found by summing the radial and tangential components of acceleration. The radial acceleration is given by:

ar = αr = (4.00 rad/s^2)(2.00 m) = 8.00 m/s^2

The tangential acceleration is given by:

at = αr = (4.00 rad/s^2)(2.00 m) = 8.00 m/s^2

The total acceleration is the vector sum of the radial and tangential accelerations:

atotal = √(ar^2 + at^2) = √(8.00 m/s^2 + 8.00 m/s^2) = √(64 m^2/s^4) = 8.00 m/s^2

(d) The angular position of point P can be found using the equation:

θ = θ0 + ω0t + 1/2αt^2

where θ is the final angular position, θ0 is the initial angular position (57.38 degrees), ω0 is the initial angular speed (0 rad/s), α is the angular acceleration (4.00 rad/s^2), and t is the time (2.00 s).

θ = 57.38 + (0)(2.00 s) + (1/2)(4.00 rad/s^2)(2.00 s)^2 = 57.38 + 16 rad = 73.38 rad

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12. A pitcher throws a baseball with a velocity of 27 m/s. After being struck by a bat the ball travels in
the opposite direction with a velocity of 40 m/s. If the ball has a mass of 0.11 kg and is in contact
with the bat for 3.0 ms, the magnitude of the average force exerted by the bat on the ball is
0.99 KN
4.8 kN
a.
b.
C.
2.5 kN
d. 7.4 kN

Answers

Answer:i don't understand what to do will you try to make it more understandable

Explanation:

The capacitor is initially uncharged. At t = 0, the switch is thrown closed.a. Immediately after the switch is closed, what is the voltage drop across the capacitor?b. Immediately after the switch is closed, what is the current through each resistor?c. After a very long time, what is the voltage drop across the capacitor?d. After a very long time, what is the current through each resistor?e. The switch is then opened, immediately after it is opened what is the current through each resistor?

Answers

(a). The voltage drop across the capacitor is zero immediately upon the switch being closed. An electronic component called a capacitor is used to store electrical energy in an electric field.

Capacitor is made up of two conductive plates, separated by an insulating material called a dielectric. When a voltage is applied across the plates, an electric field is created, causing a charge to build up on the plates. The amount of charge stored by a capacitor is directly proportional to the voltage applied across it, and is measured in units of Farads (F). Capacitors are commonly used in a wide variety of electronic circuits, including power supplies, filters, and timing circuits. They can also be used in combination with resistors and inductors to form more complex circuits, such as oscillators and resonant circuits.

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a glider of mass 0.150 moves on a horizontal frictionless air track. it is permanently attached to one end of a massless horizontal spring, which has a force constant of 10.0 both for extension and for compression. the other end of the spring is fixed. the glider is moved to compress the spring by 0.180 and then released from rest. calculate the speed of the glider (a) at the point where it has moved 0.180 from its starting point, so that the spring is momentarily exerting no force and (b) at the point where it has moved 0.250 from its starting point.

Answers

It possesses a force characteristic of 10.0 Y e and is fixedly coupled to one side of a massless vertical spring. The spring's opposite end is fastened.

What is the straightforward meaning of force?

Strength or energy used to move something or affect a change in something. the natural forces.

What is a force unit?

The newton, abbreviated N, is the Si derived unit of force.

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say true or false
1. the direction of impulse is the direction of net force and linear momentum

Answers

The direction of impulse is the direction of net force and linear momentum is referred to as true statement.

What is Impulse?

This is referred to as a certain amount of force you apply for a certain amount of time to cause a change in momentum.

It is also known as the integral of a force, F, over the time interval, t, for which it acts and is a vector quantity and the direction is also equal to the direction of the net force and linear momentum which is therefore the reason why true was chosen as the correct choice.

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A stone is propelled vertically off the ground. After it is released, which of the following are true? It’s total mechanical energy increases It’s total energy is proportional to its distance off the ground It’s kinetic energy decreases It’s gravitational energy increases

Answers

When a stone is propelled vertically off the ground its kinetic energy decreases and gravitational potential energy increases.

When an object is propelled upwards at first it have the highest kinetic energy. The total energy will be equal to kinetic energy and potential energy will be 0. When it reaches midway through the air, the kinetic energy gradually decreases and potential energy increases, because some of the kinetic energy is converted to gravitational potential energy.

When the object reaches the maximum height, the Kinetic energy will become 0, and object stops moving forward. Here all the kinetic energy i converted to gravitational potential energy. Potential energy will be maximum at this point. After this the object begins to fall attaining some kinetic energy.

So when an object is thrown vertically upwards, the kinetic energy decreases and gravitational energy increases. The total energy will remain constant throughout.

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how would you know an instrument is dull? select all that apply. a. reflects light b. does not reflect light c. the end is rounded d. bites into the plastic stick test

Answers

The right answer is (B) does not reflect light. An instrument that reflects light is likely to be sharp and in good condition, while an instrument that does not reflect light may be dull or damaged.

How is plastic created?

Natural resources like wood, coal, natural gas, salt, and crude oil are used to make plastics through the polymers or polycondensation process. Natural, organic resources like cotton, coal, natural gas, salt, and, of course, crude oil are used to produce plastics.

Can people exist without plastic?

Industrial agriculture as we know it now would not be viable without plastic. Shorter food chains would be preferable; consider farm shops and neighborhood farming. However, this would necessitate major changes in the locations and methods of food production given that cities currently house more than half of the world's population.

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Select the correct answer. In the absence of friction, gravity, and all other external forces, what kind of speed will an object display if it travels from the bottom to the top of an inclined plane

Answers

Constant speed will be displayed if the object travels from the bottom to the top of an inclined plane.

What is an inclined planes?

An inclined plane is a flat surface that is sloped at an angle. It is a simple machine used to reduce the amount of force needed to move an object from one level to another. The inclined plane works by taking advantage of the force of gravity, allowing the object to be moved up or down the slope with less effort. This simple machine can also be used to increase the distance an object can travel by moving it up and down the slope.

In the absence of friction, gravity, and all other external forces, an object traveling from the bottom to the top of an inclined plane will travel at a constant speed. This is because the total energy of the system is conserved, meaning that the kinetic energy of the object remains constant throughout its motion. The object will thus maintain its initial speed, which is determined by the angle of the inclined plane and the initial velocity of the object.

Therefore, Constant speed is the correct answer.

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What do you think are the factors that might affect the magnitude of this angle

Answers

The bond angle in a compound is the angle formed between two bonds in the compound. It is affected by the geometry, electron cloud and the size of atoms.

What is bond angle ?

Bond angle is the distance between two chemical bonds in a compound. Bond angle is affected by the electrostatic force of repulsion and attraction. Hence, the presence of lone pairs and bond pair are the main factors affecting the bond angle.

If there are lone pairs, the repulsion between two  lone pairs is greater than that between a lone pair and bond pair which in turn greater than that between two bond pairs.

Hence, the electron clouds will align themselves to minimize the repulsion. Thus, the geometry and bond angle may vary from what we predicted based on hybridization.

In general, the bond angle for linear geometry is 180° and that of trigonal planar geometry is 120 and bond angle for a tetrahedral complex is 90°

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Your question is incomplete. But your complete question probably was:

What is bond angle? What do you think are the factors that might affect the magnitude of this angle?

a heavy machine, weighing 3000 n, is supported on a resilient foundation. the static deflection of the foundation due to the weight of the machine is found to be 7.5 cm. it is observed that the machine vibrates with an amplitude of 1 cm when the base of the foundation is subjected to harmonic oscillation at the undamped natural frequency of the system with an amplitude of 0.25 cm. find a. the damping constant of the foundation, b. the dynamic force amplitude on the base, and c. the amplitude of the displacement of the machine relative to the base.

Answers

A 3000 N heavy machine is supported on the a robust foundation. The machine's weight is found to cause a static displacement of the foundation.

Why is static important?

adjective Also called "statistical," this term refers to something that is fixed or stationary. exhibiting minimal or no change a static idea; a static connection. deficient in activity, growth, or vitality: Characterizations in the work were static, especially in regard to its main characters.

What is static, anyway?

An imbalance of electrostatic force within or on surface of a material, or between materials, results in static electricity. The charge persists until it can be expelled through an electrical discharge or current.

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1 . After watching the video of how the Titanic sank, please explain with two to three sentences why the bow (front) of the ship went into the water before the rest of the ship.
2 . The video of the Titanic sinking shows that the ship broke into two parts. Why do you think that this happened? What forces were working on the stern (back) of the ship while it was up in the air? Please answer in two to three complete sentences with good grammar.

Answers

The bow (front) of the ship went into the water before the rest of the ship due to the weight of the water filled in the ship.

1. The Titanic struck an iceberg, which caused the bow of the ship to flood with water. As the water filled the front compartments of the ship, the weight of the water caused the bow to sink first, pulling the rest of the ship down with it.

2. The ship broke in two as a result of the immense stress placed on the ship's structure as the bow submerged and the stern rose out of the water. The forces of the water rushing into the ship, coupled with the weight of the stern pulling the ship apart, ultimately caused the ship to break in half. Additionally, as the ship sank, the buoyancy of the stern of the ship was lost, making it vulnerable to the forces of the water, which caused the ship to fracture.

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at point b of the swinging pendulum, there are 40 joules of kinetic energy (ke) and 20 joules of potential energy (pe). how many joules of energy will there be at point e?

Answers

There will be 60 joules of energy at point e in a swinging pendulum.

What do you mean by energy?

Energy is a property of physical systems that can be transferred or transformed, but not created or destroyed. Energy can take many forms, such as thermal, mechanical, electrical, chemical, nuclear, and others.

How do you determine?

In a simple pendulum, the total mechanical energy (the sum of kinetic and potential energy) is conserved. This means that the total energy at any point in the pendulum's motion is equal to the total energy at any other point in the pendulum's motion.

So, if there are 40 joules of kinetic energy and 20 joules of potential energy at point B, the total energy at point B is 40 joules + 20 joules = 60 joules. Since the total mechanical energy is conserved, the total energy at point E will also be 60 joules.

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The wireless spectrum, as defined by the FCC, spans between which two frequencies?

a. 500 GHz

b. 300 GHz

c. 2 KHz

d. 9 KHz

Answers

The wireless spectrum, as defined by the FCC, spans between 9kHz and 300GHz option - a is correct answer.

What radio frequency is FCC?

Between 9 and 3000 GHz

The FCC controls radio frequency (RF) components found in electrical and electronic products that can emit radio frequency energy through radiation, conduction, or other means. The radio frequency range between 9 kHz and 3000 GHz is where these products could potentially interfere with radio services.

The radio spectrum is the region of the electromagnetic spectrum that corresponds to radio frequencies (RF). The Federal Communications Commission (FCC) and National Telecommunications and Information Administration are each responsible for a portion of the radio spectrum's regulatory oversight in the United States (NTIA).

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Complete question " The wireless spectrum, as defined by the FCC, spans between which two frequencies?

9 kHz and 300 GHz

125 kHz and 150 GHz

3 kHz and 500 GHz

3 MHz and 300 GHz".

a glass window of width w 1 m and height h 2 m is 5 mm thick and has a thermal conductivity of kg 1.4 w/mk. if the inner and outer surface temperatures of the glass are 15 c and 20 c, respectively, on a cold winter day, what is the rate of heat loss through the glass? to reduce heat loss through windows, it is customary to use a double pane construction in which adjoining panes are separated by an air space. if the spacing is 10 mm and the glass surfaces in contact with the air have temperatures of 10 c and 15 c, what is the rate of heat loss from a 1 m 2 m window? t

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A 5mm thick glass window with dimensions of W=lm and H=2m has a heat capacity of 1.4 w/mK. If the glass's internal and external surface temperatures are different.

What do you mean by thermal?

Thermal refers to a condition brought on by or involving heat or temperature. In science, the term "thermal" refers to a particular type of energy called thermal energy. Getting hot molecules and electrons causes them to accelerate and collide with one another, generating thermal energy.

What does the physics term "thermal" mean?

The energy present inside a system that establishes its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is an entire school of physics that examines how heat is transmitted across various systems and how

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Circle the correct word...

1. A touch screen on a phone is an example of a device that uses a... capacitor/CCD

2. When you bring your finger close to the screen your finger acts as one of the... plates/terminals

3. A sensing circuit works out the... position/temperature... of your finger. The camera on a phone is an example of a device that uses a... capacitor / CCD.

4. Light hits a grid of devices that produce... charge/current.

5. Each of the squares is a... capacitor/pixel.

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Answer:

A touch screen on a phone is an example of a device that uses a capacitor.

When you bring your finger close to the screen your finger acts as one of the plates.

A sensing circuit works out the position of your finger. The camera on a phone is an example of a device that uses a CCD.

Light hits a grid of devices that produce charge.

Each of the squares is a capacitor.

Write out the equation for your line of best fit. Hint: Make sure you have: Variables that match your experiment Values for the the slope and intercept Units for the slope and intercept transerve stading wave

Answers

The equation for the line of best fit is y = mx + b, where m is the slope and b is the intercept.

What is intercept?

Intercept is a mathematical concept which is used to describe the point at which a line crosses the y-axis of a graph. It is represented as a coordinate and is commonly abbreviated as (x0, y0), where x0 is the intercept on the x-axis and y0 is the intercept on the y-axis. The intercept is used to determine the position of the line relative to the two axes, and can be used to graph the equation of a line. Depending on the equation, the intercept may be positive or negative, or there may be multiple intercepts on different axes.

For the transverse standing wave experiment, the equation would be y(cm) = (0.06 cm/s)x + 10 cm, where 0.06 cm/s is the slope and 10 cm is the intercept.

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if we are not supposed to charge liquid into the low side, and we have an operating system that we need to add some refrigerant to, the high side pressure will be greater than the tank pressure, so how can we add refrigerant into the system with a refrigerant blend like r-404a that must be charged as a liquid?

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R410A and 404A blends must be supplied to a systems as liquids. R22 and other pure refrigerants can be added as liquid or vapor. If you're adding liquid to the suction line, do it gradually to prevent sluggish operation of the compressor or dilution and contamination of the compressor oil.

How is r404a refrigerant charged?

There is no dip tube on the 404a. The bottle MUST be turned over down in order to be charged as a liquids. If you keep it standing, you will charge like a gas and alter the refrigerant's characteristics, creating a whole new set of problems for yourself.

How is liquid refrigerant charged?

When the necessary vacuum level is obtained for systems operating in a vacuum, the vacuum always charge coolant on the high end of the partition until low and high side pressure equalize as well as fluids quits flowing after the pump has been disconnected from the system and all leaks have been fixed.

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one of the early hypotheses to explain the high redshifts of quasars is that quasars were ejected from galaxies at very high speeds. this idea was rejected, because no quasars with large blueshifts have been found. explain why we would expect to see quasars with both blueshifted and redshifted lines if they were ejected from nearby galaxies.

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One of the first explanations for the high redshifts of quasars was that they were ejected from galaxies at extremely high speeds. Since no quasars with significant blueshifts have been discovered, this hypothesis was dismissed.

It explains why quasars with both blue shifted lines should be expected if they were ejected from neighboring galaxies. By calculating the quasar's redshift, one can determine how big the universe was in comparison to how big it is now. The quasars were identified to have significant radio emission but the appearance of stars.

At first, their visible light looked perplexing, but astronomers soon discovered that they had significantly greater redshifts than stars. Redshifts for the quasars in the currently available spectra range from 15% to over 96% of the speed of light.

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