Helppppp !! Create a new paragraph. Explain why a mirror is good for seeing objects and why acoustic panels are used in concert halls.

If an object is put into motion in space, it will continue to move in a straight line with a constant speed unless acted upon by an external force. This is due to the absence of air resistance and other forces that typically slow down objects on Earth.

Additionally, the object's motion will be affected by the gravitational forces of nearby celestial bodies, which can cause it to accelerate or change direction.

When an object is put into motion in space, it will continue to move in a straight line at a constant velocity due to the lack of external forces acting upon it. This phenomenon is explained by Newton's first law of motion, also known as the law of inertia. In space, there is no air resistance or friction, which means there are no external forces to slow down the object. Therefore, the object will maintain its constant velocity unless acted upon by another force, such as gravity from a nearby celestial body.

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A. carry-over effects. In an ABAB reversal design, the second "B" period is necessary to rule out carry-over effects. Carry-over effects occur when the effects of the first treatment phase (A) persist into the second treatment phase (B), or when the effects of the second phase influence the third phase (A).

By including a second "B" phase, researchers can evaluate whether the effects observed in the first "B" phase were due to the treatment or to carry-over effects.

The ABAB reversal design is a type of single-subject experimental design that involves alternating between a baseline phase (A) and a treatment phase (B) to evaluate the effects of the treatment on the target behavior. By comparing the behavior during the treatment phase to the behavior during the baseline phase, researchers can determine whether the treatment is effective. However, without a second "B" phase, it may be difficult to determine whether any changes observed in the first "B" phase were due to the treatment or to other factors, such as carry-over effects. Therefore, the second "B" phase is necessary to establish the effectiveness of the treatment and rule out potential confounding factors.

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The given inverse Laplace transform is: ℒ⁻¹ {5s - 8 / (s² + 16)}

The inverse Laplace transform of a function F(s) can be found using the partial fraction decomposition and the inverse Laplace transform pairs. The partial fraction decomposition of the given function is:

5s - 8 / (s² + 16) = A(s - α) / (s² + 16) + B

where α is the root of the denominator s² + 16, and A and B are constants.

Multiplying both sides by (s² + 16) and setting s = α and s = 0 gives:

α = 0, A = -1/2

B = 1/2

Therefore, the partial fraction decomposition is:

5s - 8 / (s² + 16) = (-1/2)(s - 0) / (s² + 16) + 1/2

Using the inverse Laplace transform pairs, the inverse Laplace transform of each term is:

ℒ⁻¹ {(-1/2)(s - 0) / (s² + 16)} = -1/2 cos(4t)

ℒ⁻¹ {1/2} = 1/2 δ(t)

where δ(t) is the Dirac delta function.

Therefore, the inverse Laplace transform of the given function is:

ℒ⁻¹ {5s - 8 / (s² + 16)} = -1/2 cos(4t) + 1/2 δ(t)

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Answer: the thing that brings you life- h2o- idrk the question but if this helps your welcome ^-^have a good day

Explanation:

Imaging would not be possible at any wavelength greater than the electron wavelength. It follows that an electromagnetic wave with a shorter wavelength would have more energy.

The distance between two successive crests or troughs of a wave is known as its wavelength. It is calculated by determining the wave's direction. The distance between two identical points (adjacent crests) in adjacent cycles that make up a waveform signal's wavelength while it moves through space or along a wire.

By dividing the wave's speed by its frequency, the wavelength may be calculated. The equation above is frequently used to express this.

The field of electromagnetism, a branch of physics, is concerned with the study of the electromagnetic force, a sort of physical interaction between electrically charged particles. Electromagnetic fields, which are composed of electric and magnetic fields, convey the electromagnetic force that creates electromagnetic radiation such as light.

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No, because the change in the block's energy is the same in both cases.

The motion is not parallel to the normal force because the normal force is upward and the motion stays to the left. No work is done by Fn. That is correct. Even for blocks going up and down slopes, the normal force has no effect. The net work done on a block is equal to the change in its kinetic energy. The work done by the string tension is greater to compensate for the energy consumed by friction.

The response to the upward vertical force on the passenger is the downward vertical force that the passenger exerts on the ground, also on the order of 620 N. The reaction to the passenger's weight is the upward gravitational force exerted by the passenger on the Earth, which is on the order of 650 N. The normal force acting on the box is equal and opposite to the weight of the box. The term corresponds to gravity if the box is on a flat surface.

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Answer:

Of the inner planets, Mercury and Venus have no natural satellites; Earth has one large natural satellite, known as the Moon; and Mars has two tiny natural satellites, Phobos and Deimos.

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Earth has one large natural satellite, known as the Moon.

In fact, most satellites -- especially the bits of debris -- are too faint to be seen with the unaided eye. But depending on who's counting, several hundred can be spotted with the unaided eye.

Right now, there are nearly 6,000 satellites circling our tiny planet. About 60% of those are defunct satellites—space junk—and roughly 40% are operational. The Union of Concerned Scientists (UCS), determined that 2,666 operational satellites circled the globe in April of 2020.

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Answer:

Explanation:

The gravitational force between the earth and another body is F = -GM_em/r^2 r where G = 6.67 times 10^-11 Nm^2/kg^2 is the gravitational constant, M_e = 5.97 times 10^24 kg is the mass of the earth, m is the mass of the other body, and r is the position vector of the second body with respect to the centre of the earth.

Answer:

Dry lubricants or solid lubricants are materials that, despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid oil medium.

Explanation:

Answer:

Your answer is graphite :) Have a nice day

Explanation:

By the usage of momentum change: The formulation to calculate impulse via momentum change is by means of calculating the mass of the physique and the velocity. In this case, Impulse will be equal to the product of mass and velocity. So J= m*v.

Momentum, Impulse, and the Impulse-Momentum Theorem

p = m v . p = m v . You can see from the equation that momentum is directly proportional to the object's mass (m) and speed (v). Therefore, the higher an object's mass or the greater its velocity, the greater its momentum.

The object's trade in momentum is equal to the impulse it experiences. The system is F • t = Δ m • v . The product of an object's mass and velocity determine its exchange in momentum.

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Therefore for cart to stay here on track when it arrives at point P, the net force applied to it must be greater or equal than for the heaviness of the cart.

The force is an impact that has the power to alter an object's motion. A mass-containing object's velocity can be altered by a force. An obvious way to describe force is as a pushed or a pull. A vector quantity is called a force since it has both strength and the direction.

The strongest force in existence is thought to be the strong force. The gravitation, weak, and electromagnetism forces come after it in lowest to highest.

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Answer:

380 to 700 nanometers

Explanation:

The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view. More simply, this range of wavelengths is called visible light. Typically, the human eye can detect wavelengths from 380 to 700 nanometers.

The radiation resistance of the loop is 99.9 % and the power radiated 4.97 KW.

The real resistance = 8 π² (L/λ)²

L = 2πr

λ = C/f

power radiated = \(I^{2}\)/r = 80 × 3.14 × 3.14 × 4× 3.14 × 3.14 × 0.4 × 0.4/2500

Power radiated =  4.97 KW

Radiation efficiency = Radiation resistance / radiation resistance + ohm resistance

ρL/A = 8 × \(10^{-8}\)  = 1.99 /  8 × \(10^{-8}\) + 1.99

99.9 %

The definition of radiation is energy that emanates from a source and moves at the speed of light through space. This energy has wave-like characteristics and is surrounded by an electric and magnetic field. Electromagnetic waves are another name for radiation. In nature, there are many different types of electromagnetic radiation. One example is visible light. The highest energy radiation comprises x-rays, gamma rays, and ultraviolet light. Both X-rays and gamma rays are extremely energetic. They can take electrons out of atoms when they engage with them, ionizing the atom in the process. Our cells' DNA can be harmed by radiation. High radiation exposures can result in cutaneous radiation injuries (CRI) or acute radiation syndrome (ARS) (CRI).

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The ratio of the velocities of the two planets is 0.482

The velocity v of the planet in its circular orbit can be calculated using the following formula: v = 2πr/T

So, v = 2πr/ T

Where T is the time period of revolution of the planet around the star, r is the radius of the circular orbit, and v is the velocity of the planet in its orbit.

Since we can assume circular orbits, we have v ∝ r^-1/2.

Therefore, the ratio of velocities of the two planets is given as follows:

V1 / V2 = (r1 / r2)^(1/2)

Where, V1 is the velocity of the terrestrial planet orbiting at 5.00 AU, r1 is the radius of the orbit of the terrestrial planet around the star, V2 is the velocity of the giant planet orbiting at 19.00 AU, and r2 is the radius of the orbit of the giant planet around the star.

Therefore, substituting r1 = 5.00 AU, r2 = 19.00 AU, we get the ratio of the velocities of the two planets as:

V1 / V2 = (5/19)^(1/2)

V1 / V2 = 0.482

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Assuming you are supposed to write each conversion in scientific notation:

(2) 1 m = 100 cm, so

(67 cm) × (1/100 m/cm) = 67/100 m = 0.67 m = 6.7 × 10 ⁻¹ m

(3) 1 km = 1,000 m, so

(1.2 km) × (1000 m/km) = 1200 m = 1.2 × 10³ m

(4) 1 m = 1,000 mm = 10³ mm, so

(6.2 × 10 ⁻³ m) × (10³ mm/m) = 6.2 mm

(5) 1 m = 1,000,000,000 nm = 10⁹ nm, so

(4.05 × 10³ nm) × (1/10⁹ m/nm) = 4.05 × 10 ⁻⁶ m

(6) 1 g = 1,000,000 µg = 10⁶ µg, so

(3200 µg) × (1/10⁶ g/µg) = 3200 × 10 ⁻⁶ g = 3.2 × 10 ⁻³ g

Answer:

number 2!

Explanation:

Answer:

2s to 4s

Explanation:

Since the graph measures acceleration over time, when the line does not move up or down is when you can see a constant velocity.

The spacecraft's acceleration can be found using the equation: a = (v-u)/t = 4.50 x 10^2 m / 4.0 s = 11.25 m/s^2.

Uniformly accelerating motion refers to an object that is moving at a constant rate of acceleration. This means that the velocity of the object is changing at a constant rate, but the acceleration remains the same throughout the motion. An example of this type of motion is an object that is accelerating from rest at a constant rate. The motion of the object can be described mathematically by the equations of motion, such as distance = initial velocity * time + 1/2 * acceleration * time^2. The graph of uniformly accelerating motion is a parabola, with velocity on the y-axis and time on the x-axis. This type of motion is different from non-uniform acceleration, where the acceleration changes during the motion.

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A spacecraft that is uniformly accelerating straight upward from rest reaches an altitude of 4. 50 X 102 m [up) with acceleration of 11.25 m/s².

The spacecraft's acceleration can be found using the equation:

                      a = (v-u)/t

             = 4.50 x 10² m / 4.0 s

                  = 11.25 m/s².

Uniformly accelerating motion refers to an object that is moving at a constant rate of acceleration. This means that the velocity of the object is changing at a constant rate, but the acceleration remains the same throughout the motion. An example of this type of motion is an object that is accelerating from rest at a constant rate.

The motion of the object can be described mathematically by the equations of motion, such as distance = initial velocity × time + 1/2 * acceleration × time². The graph of uniformly accelerating motion is a parabola, with velocity on the y-axis and time on the x-axis. This type of motion is different from non-uniform acceleration, where the acceleration changes during the motion.

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The correct answer is b) 2.25 s.

To find the time it takes for the motor to lift the object, we can use the formula for power:
Power = Work / Time

We are given the power output of the motor (8.0 W) and the work done by the motor, which is equal to the force applied to the object multiplied by the distance it is lifted:

Work = Force x Distance = (Mass x Acceleration) x Distance = (2.0 kg x 9.8 m/s^2) x 0.88 m = 17.36 J

Now we can plug these values back into the formula for power and solve for time:

8.0 W = 17.36 J / Time
Time = 17.36 J / 8.0 W = 2.17 s

Therefore, it takes 2.17 seconds for the motor to lift the object 88 cm. However, since the answer choices are in multiples of 0.225, we can round our answer to the nearest multiple, which is 2.25 s. So the correct answer is b) 2.25 s.

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The diffraction pattern of the hair appears in the horizontal direction that it does because the diffraction pattern of the hair appears in the horizontal direction due to the bending and spreading of light waves around the hair.

1. When light encounters an obstacle, such as a hair, diffraction occurs. Diffraction is the bending and spreading of light waves around the obstacle.
2. The hair acts as a single slit, allowing light to pass through the narrow gap around it.
3. As the light waves pass through this gap, they interfere with each other, causing constructive and destructive interference.
4. This interference results in a diffraction pattern that appears in the horizontal direction, which is perpendicular to the direction of the hair.
5. The pattern is characterized by a series of bright and dark bands, with the bright bands representing areas of constructive interference and the dark bands representing areas of destructive interference.
In conclusion, the diffraction pattern of the hair appears in the horizontal direction due to the bending and spreading of light waves around the hair, which causes interference patterns to form perpendicular to the direction of the hair.

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The delivery truck accelerates from rest to a velocity of 22.5 m/s, south, in a time of 18.3 s.

To calculate the acceleration of the truck, we can use the formula:

Acceleration = (Final Velocity - Initial Velocity) / Time

Substituting the given values:

Acceleration = (22.5 m/s - 0 m/s) / 18.3 s

Acceleration = 22.5 m/s / 18.3 s

Acceleration ≈ 1.23 m/s², south

Therefore, the delivery truck has an acceleration of approximately 1.23 m/s² in the south direction during the given time interval.

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Answer:

For trains the wheels and the rail are both steel, and the steel-steel friction coefficient is around 0.25. So the stopping time and distance will, at best, be three to four times greater than a car.

Explanation:

Answer:

Matter can exist in four different states: solids, liquids, gases and plasma.

Explanation:

Hope this helps :)

Explanation:

Use Pythagorean theorem.

v² = vₓ² + vᵧ²

(35.11 m/s)² = (33 m/s)² + vᵧ²

vᵧ = 12 m/s

The velocity of the northern tailwind is 12 m/s.

To find the velocity of northern tailwind, the given values are,

Resultant velocity v = 35.11 m/s,

Velocity of plane vₓ = 33 m/s.

Use Pythagorean theorem.

v² = vₓ² + vᵧ²

(35.11 m/s)² = (33 m/s)² + vᵧ²

vᵧ² = 35.11² - 33²

vᵧ² = 1232.71 - 1089

vᵧ = √143.71

vᵧ = 11.98 m/s

which can be vᵧ = 12 m/s

Hence, the velocity of the northern tailwind is vᵧ = 12 m/s.

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The pressure when the volume is reduced to 0.42 L is (y - b) ÷ m.

Pressure is the force per unit area applied to a surface or object. In the physical sciences, pressure is a measure of the force exerted on a surface by a fluid, such as a gas or liquid. Pressure is the result of the weight of the fluid pushing down on a surface. In physics, pressure is often expressed as the ratio of force to area. Pressure is typically measured in units of pascals (Pa) or pounds per square inch (psi). Pressure can also be measured in atmospheres (atm), bars, or torr.

The equation for the line representing the relationship between Volume (L) and (1/pressure) is y = mx + b, where m is the slope and b is the y-intercept.
Since we know the Volume (L) is 0.42, we can use this value to solve for the pressure.
Using the equation, we can calculate the pressure by solving for x:
x = (y - b) ÷ m
Therefore, the pressure when the volume is reduced to 0.42 L is (y - b) ÷ m.

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Answer:

about 16.5 by-

wait DO UR OWN MATH lol

Explanation:

The true azimuth of the AB alignment is 91º 52' (east of north), the magnetic azimuth is 100º 22' (east of north), and the grid azimuth is 108º 52' (east of north).

To find the true azimuth, magnetic azimuth, and grid azimuth of the AB alignment, we need to consider the magnetic declination. The magnetic declination indicates the angle between true north and magnetic north at a specific location. In this case, the magnetic declination is 8º 30' E, which means that the magnetic north is 8º 30' east of the true north.

To calculate the true azimuth, we subtract the magnetic declination from the grid azimuth. The grid azimuth is given as 100º 22', so subtracting the magnetic declination of 8º 30' E gives us a true azimuth of 91º 52' (east of north).

The magnetic azimuth remains the same as the grid azimuth, which is 100º 22' (east of north).

The grid azimuth is calculated by adding the magnetic declination to the true azimuth. Since the magnetic declination is east, we add it to the true azimuth. Adding 8º 30' E to the true azimuth of 91º 52' gives us a grid azimuth of 108º 52' (east of north).

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Answer:

Most energy crises have been caused by localized shortages, wars and market manipulation. Some have argued that government actions like tax hikes, nationalisation of energy companies, and regulation of the energy sector, shift supply and demand of energy away from its economic equilibrium.

Answer: The force of gravity