Answer the following questions clearly and thoughtfully.
1. If you were governor of your state...

A. What are two things you would do to protect wetlands? (2 points)

B. What are three important things wetlands can do that make them worth
protecting? (3 points)

I need help

Radio waves of 21-cm wavelength originate from Cool, neutral atomic hydrogen. Option A is the Correct answer.

The 21-cm wavelength radiation is produced by the spin-flip transition of the electron in the hydrogen atom's ground state. This transition occurs when the electron's spin changes from parallel to antiparallel or vice versa with respect to the proton's spin.

Since the hydrogen atom is the most abundant element in the interstellar medium, the 21-cm radiation is an important tool for studying the properties of the interstellar gas. The 21-cm radiation is primarily emitted by cool, neutral atomic hydrogen, which is the dominant constituent of the interstellar gas in the Milky Way galaxy. Option A is the Correct answer.

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Answer:

a= 66/11

 =6ms^-2

Answer:

There is not such thing as SI unit of meter

Meter is SI unit for length

Answer:

yes

Explanation:

because they measure the length of the same object

Answer:

There is 8900N of force on the rope and team B wins

Explanation:

Answer:The first is the magnitude of the force applied on the body and the second is the perpendicular distance from the line of action of force and the axis of rotation of the body.

Explanation:

Answer:

Overloading the muscles causes them to get stronger and grow larger.

Stars form from molecular clouds through a process known as stellar formation.

These clouds, characterized by low temperatures and high densities, provide the ideal conditions for atoms to combine and form molecules. With a mass range spanning from a few solar masses to millions of solar masses, molecular clouds serve as the birthplaces of new stars. The Pleiades cluster serves as a notable example of stars that have recently formed within such a stellar nursery.

The formation of stars from molecular clouds involves several key steps. Firstly, gravitational forces acting on regions of higher density within the cloud cause them to collapse under their own gravity. As the cloud collapses, it begins to fragment into smaller, denser clumps called protostellar cores. These cores continue to collapse, and their central regions become increasingly dense and hot. At this stage, they are known as protostars.

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D. The magnitude of the normal force acting on Frieda is approximately 226 N.

The magnitude of the normal force acting on Frieda is calculated as follows;

Fₙ = mgcosθ

where;

Fₙ = (49)(9.81)cos(62)

Fₙ = 225.7 N

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The maximum amount of equipment that the players can wear shorts only.

The minimum frequency of breaks that the players must be granted to drink fluids is 20 minutes.

In Science and Physics, relative humidity can be defined as the amount of moisture that is found in the atmosphere in comparison with the amount of air that it can hold at a specific temperature.

Generally speaking, there would be precipitation, cloud, or fog without humidity. In this context, we can logically deduce that the players can wear shorts only, without wearing pads, helmets, and long pants.

Since the time is 2:00 PM, temperature is 85ºF and the relative humidity is 60 percent, it is very important that the players be granted opportunity to drink fluids every 20 minutes.

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Answer:

The difference in tension,  between adjacent sections of the pull cable at the given conditions is 17.701 kN

Explanation:

We take the cars as moving upwards such that the resultant pulling force on the car, F, along the cable is given by the relation

\(F_{car}\) = Upward tension force,  \(Tension_{(upwards)}\) - Downward tension force, \(Tension_{(downwards)}\) - Component of the weight of the car along the taut cable

The parameters given are;

Mass of car, m = 2750 kg

Angle of inclination of taut cables, θ = 35°

The upward acceleration of the car, a = 0.81 m/s²

Given that the weight is acting vertically downwards, we have;

Component of the weight of the car along the taut cable = m × g × sin(θ)

∴ Component of the weight of the car along the taut cable = 2750 × 9.81 × sin (35°) = 15473.66 N

We therefore have;

\(F_{car}\) =  \(Tension_{(upwards)}\) - \(Tension_{(downwards)}\) - 15473.66 N

\(F_{car}\)  = m × a = 2750 × 0.81 =  \(T_{upwards}\) - \(T_{downwards}\) - 15473.66

∴  \(Tension_{(upwards)}\) - \(Tension_{(downwards)}\) = 2750 × 0.81 + 15473.66 = 17701.16 N

Hence the difference in tension,  \(Tension_{(upwards)}\) - \(Tension_{(downwards)}\) between adjacent sections of the pull cable if the cars are at the maximum permissible mass and are being accelerated up the incline = 17701.16 N or 17.701 kN.

The molar mass of a gas at 78 c and 560 torr if 206 ng occupies 0.206 ul is 41.64 g/mol

The molar mass of a gas can be calculated using the ideal gas law equation and the given values of temperature, pressure, mass, and volume.

To calculate the molar mass of a gas, we can use the formula:

Molar mass = (mass of gas) / (number of moles of gas)

First, we need to determine the number of moles of gas. We can use the ideal gas law equation:

\(PV = nRT\)

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

We are given the temperature as 78 °C, which needs to be converted to Kelvin by adding 273.15:

T = 78 + 273.15 = 351.15 K

The pressure is given as 560 torr, and the volume is given as 0.206 µl.

Next, we can calculate the number of moles using the ideal gas law equation:

\(n = (PV) / (RT)\)

(0.5105 atm)(2.06×10⁻⁷ L) = n(0.0821 L-atm/mol-K)(318 K)

n = 4×10⁻⁹ mol

Molar mass = Mass/n = 2.06×10⁻⁷ g/4×10⁻⁹ mol

Molar mass = 41.64 g/mol

Now that we have the number of moles, we can calculate the molar mass by dividing the mass of the gas (given as 206 ng) by the number of moles.

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Answer:

force meter

Explanation:

Answer:

Wrong, the correct answer is "newton"

Explanation:

1 Newton = 1 kilogram-meter per second2

Where θ 1 is the angle of the first line, and θ 2 is the angle of the second line.

Angle is the measure of a turn or displacement between two intersecting lines. Angles are typically measured in degrees, with 360 degrees in a full circle. acute angles are smaller than 90 degrees, while obtuse angles are larger than 90 degrees. Straight angles are exactly 180 degrees, while reflex angles are greater than 180 degrees.

The equation for the diffraction grating for the sodium is:
nλ = d sinθ
Where n is the order of the spectrum, λ is the wavelength of the light, d is the distance of the spectrum, and θ is the angle of the light.
For the first order, the initial angular position is:
nλ = d sinθ
θ = sin-1 (λ/d)
For the first order, the final angular position is:
nλ = d sinθ
θ = sin-1 (λ/d)
The angular separation of the two closely spaced yellow lines of sodium is:
Δθ = θ 1 - θ 2
Where θ 1 is the angle of the first line, and θ 2 is the angle of the second line.

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Answer:

The direction of the net force is at a tangent to the circle.

Answer:

(1)lower frequency

(2)lower amplitude

(3)higher frequency

(4)higher amplitude

Mr. lyall wanter to hear a music (lower frequency and lower amplitude) but, the student was playing a noise (higher frequency and higher amplitude)

Explanation:

brainliest plz

Answer:

the maximum frequency observed is 2.0044 10⁶ Hz

Explanation:

This is a Doppler effect exercise. Where the emitter is still and the receiver is mobile, therefore the expression that describes the process is

          f ’= \(f_o \ ( \frac{v \pm v_o}{v} )\)

the + sign is used when the observer approaches the source

typical speeds of a baby's heart stop are around 200 m / min

let's reduce to SI units

        v₀ = 200 m / min (1 min / 60 s) = 3.33 m / s

let's calculate

         f ’= 2 10⁶ (\(\frac{1500 \ \pm 3.33}{1500}\))  

         f ’= 2.0044 10⁶ Hz

         f ’= 1,9956 10⁶ Hz

therefore the maximum frequency observed is 2.0044 10⁶ Hz

Answer:

Because when something is moving  such as a car if your going too fast there could be a crash or collision.

Explanation:

Answer:

Explanation:

For every action (or force), there is an equal and opposite action (or force).

(a) The initial temperature is 373.95 K.

(b) The final temperature is 546.15 K.

(c) The total internal energy change of the fluid during this process is 515.4 kJ.

(d) The process can be represented as an isochoric heating process on the P-v diagram and as an isobaric expansion process on the T-v diagram.

(a) To find the initial temperature, we can use the saturated steam tables. At a pressure of 200 kPa, the corresponding saturation temperature is 373.95 K.

(b) Since the volume doubles, the process is an isochoric (constant volume) heating process. Using the ideal gas law, we can determine the final temperature. The initial and final volumes are related by the equation V_final = 2V_initial. Since the mass remains constant, the specific volume (v) is inversely proportional to the density (ρ). Therefore, ρ_final = ρ_initial/2. Using the ideal gas law, we can calculate the final temperature to be 546.15 K.

(c) The total internal energy change can be calculated using the equation ΔU = mC_vΔT, where m is the mass of the fluid and C_v is the specific heat at constant volume. Given the mass as 0.5 kg, the specific heat of water at constant volume, and the temperature change, we can find that the total internal energy change is 515.4 kJ.

(d) On the P-v diagram, the process is represented as a vertical line at 200 kPa, indicating constant pressure. On the T-v diagram, the process is shown as an upward-sloping line, indicating an isobaric expansion process. The initial state is represented as a point on the left, and the final state is represented as a point on the right. The path between the initial and final states is a straight line connecting these two points.

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The piece of office telephone equipment commonly used to assist with answering and routing phone calls into the office is called a Private Branch Exchange (PBX) system.

PBX systems are essential in managing incoming and outgoing calls in a professional and organized manner.

A PBX system can be hardware-based or software-based, offering flexibility in terms of installation and maintenance. It supports multiple phone lines, enabling businesses to have separate lines for different departments or employees. The system also provides features like call transferring, call forwarding, voicemail, and automated call routing, ensuring that all incoming calls are directed to the appropriate party efficiently.

Furthermore, PBX systems can be integrated with other office communication tools like email, instant messaging, and video conferencing, promoting seamless collaboration among employees. Overall, a PBX system significantly improves office communication and productivity by providing a centralized solution for managing and routing phone calls.

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The melting point of a substance is the temperature at which the substance changes its phase from solid to liquid.

The freezing point is the temperature at which the substance changes its phase from liquid to solid.

The melting point of a substance is the same as the freezing point. That is when the temperature of the substance in the liquid form is increased continuously, the temperature at which the substance turns into a solid is equal to the temperature at which the substance will turn into liquid from solid if the temperature is decreased continuously, from a higher temperature.

Answer:

Q_c = Q_abs

Explanation:

You are asked to describe the process when placing a hot block in cold water.

The first thing to do is put all the quantities in the same units

block temperature      T_bloque = T_h = 300 K = 300 -273 = 27ºC

water temperature     T_water = T_c = 15ºC

* initially the block cools down decreasing its temperature

* the water temperature increases

* the equilibrium is established when the thermal energy of the two bodies is equal, therefore they have the same temperatures T_f

* Conservation of energy requires that the energy released by the hot block is equal to the energy absorbed by the cold body (water)

transferred thermal energy Q_c = m_block ce_block (T_h-T_f)

absorbed thermal energy Q_abs = m_agua ce_agua (T_f - T_c)

* if we subtract the energy transferred and the absorbed gives zero, therefore the net energy transferred is zero

                               Q_c = Q_abs

Answer: i think they control the eyes to move them.

Explanation:

160 W rate it will radiate.

The Kelvin scale, where 0 represents absolute zero, is used to measure absolute temperature. The temperature at which matter's particles move the least and cannot cool down is known as the zero point (minimum energy)

The lowest energy state for a thermodynamic system is absolute zero. In terms of temperature, it is equivalent to 459.67 °F in Fahrenheit and 273.15 °C in Celsius.

The temperature of an object on a scale where 0 is assumed to be absolute zero is known as its absolute temperature, also known as thermodynamic temperature. The Kelvin and Rankine scales measure absolute temperature.

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Answer:

Please find the answer in the explanation.

Explanation:

Given that the actual speed of the car at the top of the hill is 20.0m/s. What is the reason for this difference in velocity?

Speed is a scalar quantity that is, it has only magnitude but no direction.

While velocity is a vector quantity, that is, it has both magnitude and direction.

If the actual speed of a car is 20 m/s, that is the magnitude of the speed only without direction.

The velocity will therefore be of the same magnitude but with addition of direction. Either west, east or north south.

To determine the reject rate (RR) for each scenario, we need to consider the capability indices Cp and Cpk along with the specifications for tensile strength. The reject rate represents the proportion of parts that do not meet the specifications.

1. RR = 0.27%

2. RR = 16.03%

3. RR = 0%

4. RR = 0.003%

5. RR = 0.27%

6. RR = 2.28%

7. RR = 29.93%

8. RR = 0%

9. RR = 5.87%

Please note that these calculations assume a normal distribution of tensile strength and that the process is in statistical control. The reject rate is obtained by evaluating the proportion of values falling outside the specified limits based on the process capability indices Cp and Cpk.

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Answer:

not sure but dont give up and dont take advantage of this :)

Explanation:

Answer:

A balloon with air

Explanation:

The ball that is projected 125 meters straight upward has a total time in the air of: 10.1 s

The formulas for the vertical launch upward and the procedures we will use are:

Where:

Information about the problem:

Applying the maximum height formula and clearing the initial velocity we get:

y max = v₀²/(2*g)

v₀ = √(y max * (2*g))

v₀ = √( 125 m * (2 * 9.8 m/s²))

v₀ = √( 125 m * 19.6 m/s²)

v₀ = √2450 m²/s²

v₀ = 49.497 m/s

Applying the maximum time formula we get:

t max= v₀ / g

t max= 49.497 m/s / 9.8 m/s²

t max = 5.050 s

Applying  the time of flight formula, we get:

t(of) =2 * t max

t(of) =2 * 5.050 s

t(of) = 10.1 s

In physics vertical launch upwards is the motion described by an object that has been launched vertically upwards in which the height and the effect of the earth's gravitational force on the launched object are taken into account.

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The time taken now is 10 s

We know that in this case, the object was projected vertically upward and we know that in this direction the acceleration due to gravity is negative. Then the ball falls straight down to  the ground. We have to use the equation of kinematics under gravity to approach the problem.

We now have that;

h = ut + 1/2gt^2

Considering the downward motion were g is positive u = 0 m/s

h =  1/2gt^2

t = 2h/g

t = √2h/g

t = √ 2 * 125/10

t = 5 s

Given that the time taken to go up is the same as the time taken to come down;

Total time spent in air = 2 (5 s) = 10 s

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