All of the following statements are true. which one provides strong observational support for the claim that greenhouse gases make a planet warmer than it would be otherwise?

A. Venus has a higher average temperature than mercury
B. earth has a higher average temperature than mars
C. earth is the only planet with an ozone layer in its atmosphere
D. Mercury is much hotter than the moon.

Answer:

5 m

Explanation:

Allison is 4 m LOWER than Emily

vertical component =   12 * sin(-30) = -  6 m/s

vertical distance equation

     d = do + vot + 1/2 at^2

     - 4  = 0 +  -6 t  + 1/2 (-9.81) t^2      

              - 4.905 t^2 - 6t + 4 = 0       Use Quadratic Formula to find t =.479 s

So the ball flies with its HORIZONTAL  component for .479 s then Alli catches it

Horizontal component = 12 cos(- 30) = 10.4 m/s

   10.4 m/s  * .479 s = 4.977 =~ 5 m

Refer to the photo taken.

Answer: 4.98m

The average outside temperature for a given day was 38 degrees F, the HDD for that day was 27.

We have the given temperature outside that is 38 degrees Fahrenheit. We need to calculate the HDD for that day.HDD stands for Heating Degree Day. It is a measure of how much heat is required to maintain the temperature of a building at 65 degrees Fahrenheit when the outside temperature is lower than 65 degrees Fahrenheit. If the outside temperature is greater than or equal to 65 degrees Fahrenheit, then the HDD is zero.

HDD = 65 - Average Daily Temperature

For the given day, the HDD can be calculated as:

HDD = 65 - 38 = 27

Therefore, the HDD for that day was 27.

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The linear speed of the clothes as a spin in the barrel is 102.1 m/s.

The linear speed of the clothes is the measure of the change of displacement of the clothes with time.

Mathematically, the formula for linear speed is given as;

v = ωr

where;

The angular speed of the wash machine is given as;

ω = 1950 rpm = 1950 rev/min x 2π rad/rev x 1 min/60 s = 204.2 rad/s

v = 204.2 rad/s x 0.5 m

v = 102.1 m/s

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The unemployment rate in China for 2021 was 4.82%, a 0.18% decline from 2020.

In 2021, the price of registered unemployment in urban areas of China turned approximated at about 3.96 percent. The unemployment price was stick out to remain below four percent in 2022.

Unemployment mentions the percentage of the exertions force that is without work still to be had for and looking for employment. China's unemployment rate for 2020 changed to 5.00%, a 0.48% growth from 2019.

Thus, China's unemployment rate for 2021 was 4.82%, a 0.18% decline from 2020.

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Answer:

The photo is blocked cant see anything

Explanation:

Answer:

Destructive interference

Explanation:

At a node, there is complete destructive interference at all times, so the displacement is zero. Why does a node in a standing wave have zero displacement? As the siren moves away, each wave front produced by the siren is farther from the previous wave front than if the siren were standing still.

A node in a standing wave has zero displacement because it is the point where two waves traveling in opposite directions cancel each other out, resulting in destructive interference and no movement of particles from their equilibrium position.

In a standing wave, nodes are points that do not experience any displacement. This occurs due to the interference of two waves traveling in opposite directions. When two waves with the same amplitude and frequency pass through each other, they create a standing wave pattern.

The nodes are the points where the two waves cancel each other out, resulting in zero displacement. At these points, the crest of one wave coincides with the trough of the other wave, causing destructive interference. As a result, the particles at the nodes do not move from their equilibrium position and remain at zero displacement.

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Answer:

(4) The physical and chemical properties of these minerals determine how humans use them.

Explanation:

All the materials and the metals found on earth shows certain characteristics naturally or in their physical state. These physical characteristics can be their look, their structure, their color, strength, melting point, boiling point, density, etc.

And chemical properties of the metals are defined as those characteristics or features of the metals that it exhibits when these metals reacts chemically.

The physical properties as well as the chemical properties distinguishes each metal from each other. These properties determines how people use these metals in their life.

1 and 3 tie, then 2 and 4 tie, then 5 (zero) is according to the magnitudes of their angular momentum about point O.

A property known as angular momentum describes the rotating inertia of an object or system of objects when they are moving about an axis that may or may not pass through them. The Earth has spin angular momentum from its daily rotation around its axis and orbital angular momentum from its yearly revolution around the Sun. Since angular momentum is a vector quantity, its full representation calls for the identification of both a magnitude and a direction. An orbiting object's angular momentum is proportional to its linear momentum, which is calculated by multiplying its mass m by its linear velocity v, by the perpendicular distance r from the center of rotation.

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(a) The ball cleared the crossbar by 10.23 m.

(b) The ball approaches the crossbar while falling.

The maximum height reached by the ball is calculated by applying the following kinematic equation as shown below;

H = u² sin²θ / 2g

where;

H = (20.2² x (sin 53)²) / (2 x 9.8)

H = 13.28 m

ΔH = 13.28 m - 3.05 m = 10.23 m

The horizontal distance travelled by the ball is calculated as follows;

R = u² sin(2θ) / g

R = (20.2² sin(2 x 53) ) / (9.8)

R = 40 m

Thus, the ball cleared the crossbar and since the maximum height travelled by the ball is far greater than the height of the crossbar, the ball will approach the crossbar while falling.

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The magnitude of the net force on the 6 kg block is 70.8 N.

The net force on the 6 kg block can be calculated by considering the forces acting on it. The net force is equal to the sum of the forces acting on the block.

The force acting on the 6 kg block due to string 1 is unknown F1.

The force acting on the 6 kg block due to string 2 is 12 N.

The gravitational force acting on the 6 kg block is

F_gravity = m_6 * g

and

m_6 = mass of the 6 kg block

g = acceleration due to gravity

F_gravity = 6 kg * 9.8 m/s^2 = 58.8 N

The net force on the 6 kg block is the sum of all the forces:

F_net = F1 - F_gravity + 12 N

F_net = 12 N + 58.8 N = 70.8 N

In conclusion, the magnitude of the net force on the 6 kg block is 70.8 N.

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The total amount of time the ball would be in the air is 2.04 secs

To determine how long the ball will be in the air,

We will the equation for calculating total time of flight, T

For a projectile motion, the total time of flight of an object is given by

\(T = \frac{2usin\theta}{g}\)

Where T is the total time of flight

u is the velocity of projection

θ is the angle of projection

and g is the acceleration due to gravity

From the question,

u = 10.0 m/s

θ = 90° (This is because the ball is kicked straight up)

Put these values into the equation,

\(T = \frac{2usin\theta}{g}\)

\(T = \frac{2\times 10.0 \ sin90}{9.8}\)

(NOTE: g = 9.8 m/s²)

∴ \(T = \frac{2\times 10.0 \times 1}{9.8}\)

\(T = \frac{20}{9.8}\)

T = 2.04 secs

Hence, the total amount of time the ball would be in the air is 2.04 secs

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Answer:

40kg(88pounds)

Explanation:

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.

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.

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Answer: ≈ 40.8 kilograms (89.9 pounds)

Explanation: Well, assuming the boy is on Earth, then the gravitational acceleration is approximately 9.8 m/s^2.

So, we get: mass = weight / gravitational acceleration

Put two and two together and you get 400-N / 9.8 m/s^2 ≈ 40.8 kg (89.9 pounds).

Explanation:

In first case, the forces on LHS and on RHS is the same i.e. 3 N. The force acting on the car is balanced force. As a result, the car will not move at all.

In second case,

Force on RHS = 2000 N

Force on LHS = -6000 N

Net force acting on it is given by :

F = 2000+(-6000)

= -4000 N

Hence, this is the required solution.

Answer:

B. mining, cattle ranching, logging

Explanation:

Took the quiz on edge2020 :)

The concept behind the multiverse is the idea that there are an infinite number of parallel universes existing alongside our own. This theory is supported by the idea that the laws of physics allow for the existence of multiple universes, and that the process of cosmic inflation in the early universe could have created an infinite number of distinct regions, each with its own Big Bang, resulting in an infinite number of universes.

In 1929, astronomer Edwin Hubble discovered that the universe is expanding, this discovery helped to support the Big Bang theory.

In the 1990s, two teams of astronomers found that the universe is not only expanding, but that the expansion is accelerating. This discovery created the question of what is driving this acceleration, a force that is referred to as dark energy.

The mystery that Brian Greene discusses in his TED talk is the possible existence of other universes and the implications this could have for our understanding of the universe and our place in it. He argues that this is something we should all care about because it has the potential to reshape our understanding of the universe and our place within it.

String Theory is a theoretical framework that describes the universe as being made up of tiny, one-dimensional "strings" that vibrate at different frequencies. The central idea behind String Theory is that these strings are the fundamental building blocks of matter and that the different vibrations of these strings give rise to the different particles and forces in the universe.

Greene explains that though the Big Bang theory explains how the universe evolved, it fails to explain what actually powered the Bang. He suggests that the Big Bang was powered by a process called cosmic inflation, which is driven by a hypothetical form of energy called inflationary energy, which is similar to dark energy.

The TED talk by Brian Greene is about the concept of the multiverse, the idea that there are an infinite number of parallel universes existing alongside our own.

He discusses the scientific evidence and theories that support this idea, and the implications it has for our understanding of the universe and our place in it. He also talks about the discoveries made by astronomers Edwin Hubble and the two teams of astronomers in the 1990s about the expansion and acceleration of the universe and how it relates to the multiverse theory.

Therefore, He also mentions some of the theoretical frameworks like string theory that support the idea of multiverse and the mysteries that still need to be explained.

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Answer:

34kg

Explanation:

The electric field between two plates is 40 V/m.

To find the electric field between two plates, the values are given are,

distance =  3 cm

Voltage v = 120 v

           The electric field between plates is the area where the charges between two plates, influences can be seen. For example, if a charged particle is placed near any charged plate, the plate exerts an electric force to attract or repel the charged particle.

Formula is given as,

                        E = V / d (v/m)

Substituting the given values,

                           = 120 /3

                           =40 v/m

Hence, the answer is 40 v/m.

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Answer:

The net force exerted on the race-car driver is 727.3 N

Explanation:

Acceleration

According to Newton's second law of motion, the acceleration of an object a is directly proportional to the net force F and inversely proportional to the object's mass m:

\(F=m.a\)

Since we don't have the value of the acceleration, we must use the kinematic equations to calculate it.

The main formula for accelerated motion is:

\(v_f=v_o+a.t\)

Where vf is the final speed of the object, vo is its initial speed, a is the acceleration, and t is the time.

The race-car driver accelerates from vo=0 to 50 m/s in t=5.5 s. We can calculate the acceleration, solving the above equation for a:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

\(\displaystyle a=\frac{50-0}{5.5}\)

\(a=9.09\ m/s^2\)

Now we calculate the net force:

\(F=80\ Kg\cdot 9.09\ m/s^2\)

\(\boxed{F=727.3\ N}\)

The net force exerted on the race-car driver is 727.3 N

optical fibre

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Answer:

it will increase the frequency of collisions between the two reactants

Explanation:

mark brainliest?

Answer:

t_total = 6.99 s

Explanation:

It asks us how long it takes to hear the sound, for this we must look for the time (t₁) it takes for the sound to reach the microphone, the time it takes for the video signal (t₂) to reach the television and the time (₃) it takes for the TV sound to reach us, so the total delay time is

         t_total = t₁ + t₂ + t₂

we look for t1, it indicates that the distance x = 22m

          v = x / t

           t = x / v

           t₁ = 22/343

           t₁ = 6.41 10-2 s

time t₂

          t₂ = 4500 103/3 108

          t₂ = 1.5 10-5 s

time t₃

          t₃ = 2/343

          t₃ = 5.83 10⁻³

Total time is

         t_total = t₁ + t₂ + t₃

         t_total = 6.41 10⁻² + ​​1.5 10⁻⁵ + 0.583 10⁻²

         t_total = 6.99 s

Answer:

24

Explanation:

24.305 of atomic mass has 12 neutrons

The force of gravity of the Earth on the moon is equal to the force of gravity of the moon on the Earth. Both forces are the same.

The force of gravity between two objects depends on their masses and the distance between them. According to Newton's law of universal gravitation, the force of gravity is directly proportional to the product of the masses of the two objects and inversely proportional to the square of the distance between their centers.
In this case, we are comparing the force of gravity of the moon on the Earth to the force of gravity of the Earth on the moon.

Let's assume the mass of the Earth is 100 units (arbitrary), and the mass of the moon is 10 units, which is 10% of the Earth's mass.
To find the force of gravity between the Earth and the moon, we need to use the formula:
\(F = (G * m1 * m2) / r^2\)
Where:
F is the force of gravity,
G is the gravitational constant,
m1 and m2 are the masses of the two objects,
and r is the distance between their centers.
Since we are comparing the forces, we can cancel out the gravitational constant (G) and the distance (r) from the equation, as they are the same for both objects. So we are left with:
\(F1 / F2 = (m1 * m2)1 / (m1 * m2)2\)
Where F1 is the force of gravity of the moon on the Earth and F2 is the force of gravity of the Earth on the moon.
Substituting the given values, we get:
\(F1 / F2 = (100 * 10) / (10 * 100)\)
Simplifying further:
\(F1 / F2 = 1 / 1\)

In conclusion, the force of gravity of the Earth on the moon is the same as the force of gravity of the moon on the Earth, regardless of the masses of the objects involved.

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The distance from the lens to the focal point is called the focal length.

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Answer:

Kinetic energy=1/2mvsquare

1/2 x 1400 x 25 x25

Therefore kinetic energy= 437500Joules

Explanation:

Answer:

437,500 Joules

Explanation:

KE= 1/2 × M

x V^2, where

M = Mass,

V = Velocity

KE = 1/2 × 1400 × 25^ 2

KE= 1/2 × 1400 × 625

KE = 437,500 Joules.

Answer/Explanation:

In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.

A concentration refers to a subject or study within a specific major. As part of the degree coursework, concentration classes count toward your major requirements as well.

Answer:

Explanation:

While traveling through space, asteroids sometimes collide with each other and break up into smaller fragments. Comets shed dust as they roam the solar system. These 'break ups' result in numerous small particles and fragments, called meteoroids, which orbit the sun. ... Thus a meteor, or shooting star, is formed.

Answer:

While traveling through space, asteroids sometimes collide with each other and break up into smaller fragments. Comets shed dust as they roam the solar system. These 'break ups' result in numerous small particles and fragments, called meteoroids, which orbit the sun. Thus a meteor, or shooting star, is formed.

Explanation:

The Weight  is a vector whose magnitude is the product of the mass m of the object and the magnitude of the local gravitational acceleration. Its always directed toward  the center of the Earth.

If the gravitational potential energy of an Earth-apple system is 10 J, it means that the apple has 10 Joules of potential energy due to its position in the Earth's gravitational field.

Gravitational potential energy is the energy an object possesses due to its height or position in a gravitational field. In this case, the apple is being held at a certain height above the Earth's surface.

The value of 10 J indicates the amount of potential energy the apple possesses at that specific height. As the apple is lifted higher or lowered closer to the Earth's surface, its gravitational potential energy would change accordingly.

It's important to note that potential energy is relative, meaning it is measured with respect to a reference point or zero level. In this case, the reference point is typically chosen as the Earth's surface, and the potential energy is measured relative to that point.

So, a gravitational potential energy of 10 J for an Earth-apple system signifies that the apple, at its given height above the Earth's surface, has 10 Joules of energy due to its position in the gravitational field.

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The most economical sources for electricity in remote locations would be solar and wind electricity production.

Solar power is the process of converting sunlight into electricity using photovoltaic (PV) cells or panels. The photovoltaic effect, discovered by French physicist Edmond Becquerel in 1839, converts sunlight into electricity.

Solar panels generate direct current (DC) electricity when exposed to sunlight. The current is transferred to an inverter, which converts the DC electricity to alternating current (AC) electricity, which is used in homes and buildings.

Wind energy is a type of renewable energy generated by the movement of the wind. Wind turbines are used to convert wind energy into electricity. Wind energy is the most commonly used renewable energy source, accounting for around 5% of all electricity generated worldwide. Wind turbines can be installed on land or offshore, depending on the location.

In conclusion, solar and wind electricity production are the most economical sources for electricity in remote locations.

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