PLZZZZZZZ HELLLLPPPPPP MEEEEE
Directions: Pretend you are a newspaper reporter, a television news reporter, an environmental activist, or an Internet blogger Nuclear Material

create a blog about Nuclear Material; include at least 3 blog entries explaining your topic, describing why it is important, etc.

You must also be sure to explain what the issue is, why it is important, different viewpoints on the issue, etc. Use language that is appropriate for the role you selected and your audience. Also, be sure to select the medium that will best communicate your message to the audience.

COVID-19 had both pros and cons for students. Challenges and issues are subjective to every other student.

On one hand, some students were thrilled because they can just take classes online without them even needing to get out of bed but it was also ruining the very aspect of being disciplined as a student.

Moreover, many students were studying abroad far from home. They couldn't even manage to deal with the panic Covid-19 brought with itself. They felt so helpless not knowing what to do next as they couldn't even manage to get home safely. While the students studying from home were getting lethargic.

Besides, not everyone had access to the internet because they also had to manage other finances. Families were worried about survival during the first few months of the pandemic. It was beyond stressful for the student to cope with their studies.

Nevertheless, supportive communities and authorities were there as well. Apparently, we went through it quite well.

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Given data:

Length;

Pitch;

The velocity ratio is given as,

Substituting all known values,

Therefore, the velocity ratio of a screw jack is 40π or 125.71.

The correct answer is Self-critical.

Why is self-improvement?

Self-critical:

Self-critical causes them to always strive for self-improvement and never to see accomplishing a goal as good enough.

The characteristic of a turbulent person causes them to always strive for self-improvement and to never see accomplishing a goal as good enough is Self-critical.

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Answer: The depth of the ocean is 650 feets at the bottom of the sunlight zone.

The distance travelled by echo sound is given by the formula -

Speed = 2×distance/time

So, calculating the speed of sound from the formula using distance and time

Speed = 2×25/(1/100)

Speed = 50×1000

Speed of sound = 5000 feet/second

Now, calculating the distance or depth of ocean at the bottom of the sunlight zone -

Distance = (speed×time)/2

Distance = (5000×26/100)/2

Distance = 1300/2

Distance = 650 feets

Hence, the depth of ocean is 650 feets.

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Answer:

We can start by using the formula:

distance = speed x time

where distance is twice the depth of the ocean at the bottom of the Sunlight Zone (since the pulse travels down to the seafloor and then back up), speed is the speed of sound in water, and time is the round-trip time of the pulse.

The speed of sound in water is approximately 1,500 meters per second (or 4,921 feet per second).

Converting the round-trip time to seconds, we have:

26 seconds - 1 second = 25 seconds

Substituting the values into the formula:

2 x depth = 4,921 feet/second x 25 seconds

2 x depth = 123,025 feet

depth = 61,512.5 feet

Therefore, the ocean at the bottom of the Sunlight Zone is about 61,512.5 feet deep.

The pressure of the oxygen gas is 2.95 x 10⁵ Pa.

The pressure of the oxygen gas is calculated by applying the following formula as shown below.

Mathematically, the formula for the pressure of a gas at given root mean square pressure is given as

P ( O₂ ) = [ ( n R ( v² M / 3R ) / ( VO₂ ) ]

where;

P ( O₂ ) = [ ( n x  v² M ) / (3 x VO₂ ) ]

The pressure of the oxygen gas is calculated as follows;

P ( O₂ ) = [ ( 12 x 480²  x 0.032 ) / ( 3 x 0.1 ) ]

P ( O₂ ) = 2.95 x 10⁵ Pa

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The water, determine the heat transfer, in KJ/Kg. Kinetic energy and potential energy effects can be ignored is  407.5kJ/kg.

From the properties of the saturated water pressure table;

At 4 bar and Saturated vapor

\(u_1 =\) 2553.6 kj/kg

\(v_1 =\)0.4625m³/kg

Since tank is rigid, volume remains constant therefore,

\(v_2 = v_1 =\) 0.4625m³/kg

From the superhead water table

\(v_2 = v_1 =\) 0.4625m³/kg And T_2 = 400°C

\(u_2 =\)2961.1kJ/kg

Calculate the heat transfer for rigid tank

\(Q= u_2 -u_1\)

  = 2961.1 - 2553.6

  = 407.5kJ/kg

Temperature is a bodily quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Temperature scales want values for definition: the factor chosen as 0 ranges and the magnitudes of the incremental unit of temperature.

Thermometers are calibrated in numerous temperature scales that traditionally have trusted numerous reference points and thermometric materials for definition. The maximum commonplace scales are the Celsius scale with the unit symbol °C (formerly called centigrade), the Fahrenheit scale (°F), and the Kelvin scale (ok), the latter being used predominantly for scientific purposes. The kelvin is one of the seven base units inside the global device of units (SI).

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Complete Question:

Water, initially saturated vapor at 4 bar, fills a closed, rigid container. The water is heated until its temperature is 400 degrees celsius. For the water, determine the heat transfer, in KJ/Kg. Kinetic energy and potential energy effects can be ignored.

The heat transmission from the water is measured in KJ/Kg. It is possible to ignore the effects of kinetic energy and potential energy at 407.5kJ/kg.

Temperature is a physical measure that quantifies how hot or cold something feels. A thermometer is used to determine temperature. The factor selected as 0 ranges and the magnitudes of the incremental unit of temperature are needed for the establishment of temperature scales.

Thermometers are calibrated using a variety of temperature scales, which historically relied on a wide range of reference points and thermometric materials to define them. The most widely used scales are the Kelvin scale (ok), which is mostly used in science, the Fahrenheit scale (°F), and the Celsius scale with the unit sign °C (formerly known as centigrade). One of the seven base units in the worldwide device of units is the kelvin (SI).

Based on the pressure table's characteristics for saturated water;

Saturated vapour at 4 bar

\($$\begin{aligned}& u_1=2553.6 \mathrm{kj} / \mathrm{kg} \\& v_1=0.4625 \mathrm{~m}^3 / \mathrm{kg}\end{aligned}$$\)

Tank's rigidity ensures that volume is constant; as a result,

\($$v_2=v_1=0.4625 \mathrm{~m}^3 / \mathrm{kg}$$\)

Super head water table, from

\(& v_2=v_1=0.4625 \mathrm{~m}^3 / \mathrm{kg} \\ { T_2 }=400^{\circ} \mathrm{C} \\& u_2=2961.1 \mathrm{~kJ} / \mathrm{kg}\)

Calculate the rigid tank's heat transfer.

\($$\begin{aligned}Q & =u_2-u_1 \\& =2961.1-2553.6 \\& =407.5 \mathrm{~kJ} / \mathrm{kg}\end{aligned}$$\)

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Note: The complete question would be as bellow,

Water, initially saturated vapor at 4 bar, fills a closed, rigid container. The water is heated until its temperature is 400 degrees celsius. For the water, determine the heat transfer, in KJ/Kg. Kinetic energy and potential energy effects can be ignored.

Answer:

2Hz

Explanation:

Answer:

Explanation:

Problem relates to diffraction of light . Location for 2 nd diffraction minima is

\(x=2\times\frac{\lambda D}{d}\)  where λ is wavelength of light , D is distance of screen , d is slit width .

Puting the values

\(x=2\times\frac{620D}{d}\)

for unknown wavelength , position of third diffraction is

\(x=3\times\frac{\lambda D}{d}\)

from these two equations

\(x=2\times\frac{620D}{d}\)\(=3\times\frac{\lambda D}{d}\)

λ = 413.33 nm .

Answer:

The answer will be it has a mass of 40 kg.

Explanation:

Because Force = mass x acceleration or F = m a, we can say Force divided by mass or F/a = m or mass so 600 divided by 15 equals 40 kg.

Answer:

Sample Response: If the speed of an object increases, then its kinetic energy will increase proportionally because speed and kinetic energy have a linear relationship when graphed.

Explanation:

edge

Answer: Pedaling your bike : acceleration :: applying the brakes : inertia.

The reason I think this to be the answer to the analogy is because there is energy and work used in both processes (and the unit focuses on forces); gravity is constant and does not change whether one pedals or applies brakes. And I do not think it's deceleration, as deceleration tends to equate to acceleration within the physics perspective.

Edit: I should also add that since you clarified that your unit is motion and forces, Newtons 1st law is the law of inertia. The way to change an objects motion for it to slow down is by applying an additional force. That resistance the bike experiences to slow is the process of inertia. Inertia happens in order to accelerate an object (either by slowing it down, or speeding it up): i.e., the resistance to change.

a) The total surface area of tin G in terms of π is 170π cm².

b) The mass of tin H is 336 g.

To solve the given problem, we need to determine the total surface area of tin G in terms of π and the mass of tin H. Since the mass of an empty cylindrical tin is proportional to its surface area, we can use the given information to find the solutions.

a) Total surface area of tin G in terms of π:

The surface area of a cylinder consists of two circular bases and the lateral surface area. The formula for the lateral surface area of a cylinder is given by:

Lateral surface area = 2πrh

where r is the radius of the base and h is the height of the cylinder.

In the case of tin G, the given dimensions are a radius of 5 cm and a height of 12 cm. Substituting these values into the formula, we can calculate the lateral surface area:

Lateral surface area = 2π(5 cm)(12 cm)

Lateral surface area = 120π cm²

Since the total surface area of the cylinder includes the two circular bases as well, we need to add their areas. The area of a circle is given by:

Area of a circle = πr²

The radius of the circular base of tin G is 5 cm, so the area of each circular base is:

Area of each circular base = π(5 cm)²

Area of each circular base = 25π cm²

To find the total surface area of tin G, we sum the lateral surface area and the areas of the two circular bases:

Total surface area of tin G = Lateral surface area + 2 × Area of each circular base

Total surface area of tin G = 120π cm² + 2 × 25π cm²

Total surface area of tin G = 120π cm² + 50π cm²

Total surface area of tin G = 170π cm²

Therefore, the total surface area of tin G in terms of π is 170π cm².

b) Mass of tin H:

We are given that the surface area of tin H is 792π cm². We can assume that the same proportionality factor applies as in tin G, so we can set up the following proportion:

(surface area of tin G) / (mass of tin G) = (surface area of tin H) / (mass of tin H)

Using the given values, we have:

(170π cm²) / (72 g) = (792π cm²) / (mass of tin H)

Cross-multiplying and solving for the mass of tin H, we get:

(170π cm²) × (mass of tin H) = (72 g) × (792π cm²)

mass of tin H = (72 g) × (792π cm²) / (170π cm²)

mass of tin H = 336 g

Therefore, the mass of tin H is 336 g.

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Answer:

This is true. objects that have a greater mass has greater interia. which also means objects that have a less mass has also less interia.

Explanation:

i hope this helps!!!

Less reflective material is sprayed thickly in one-way glass, unlike a regular mirror, the glass is not entirely opaque. The glass reflects about half of the light that hits it while letting through about half of it.

An actual or hypothetical image is produced by a mirror, which is a reflecting surface that reflects light. A mirror reflects the identical image of a thing when it is held up in front of it. The incident rays originate from the object, and the image is made by the reflected rays. The intersection of the light beams determines whether the images are real or simulated. While virtual images are created when light beams from a point appear to diverge, real pictures are created when light rays actually cross.

We may establish the direction of the light as it moves to a specific location on a photograph of an object by using ray diagrams.

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Answer:

The velocity is  \(v = 5838 \ m/s\)

Explanation:

From the question we are told that

   The electric field is \(E = 2.09 kV/m = 2.09 *10^{3} \ V/m\)

    The magnetic field is  \(B = 0.358 \ T\)

Generally the force experienced by the electron due to the magnetic field is

         \(F_m = qvB\)

Generally the force experienced by the electron due to the electric  field is

       \(F_e = qE\)

Since from the question the net force is zero  then

     \(F_e = F_m\)

=>    \(v = \frac{E}{B}\)

Substituting values

      \(v = \frac{2.09*10^{3}}{0.358 }\)

    \(v = 5838 \ m/s\)

It would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.

1. The decay rate of a radioactive isotope is proportional to the number of radioactive atoms present in the sample at any given time.

2. The decay rate can be expressed as a function of time using the formula: R(t) = R₀ * \(e^{(-\lambda t\)), where R(t) is the decay rate at time t, R₀ is the initial decay rate, λ is the decay constant, and e is the base of the natural logarithm.

3. The half-life of a radioactive isotope is the time it takes for half of the radioactive atoms in a sample to decay. In this case, the half-life is given as 210 days.

4. Using the half-life, we can find the decay constant (λ) using the formula: λ = ln(2) / T₁/₂, where ln(2) is the natural logarithm of 2 and T₁/₂ is the half-life.

5. Substituting the given half-life into the formula, we have: λ = ln(2) / 210.

6. Now, we need to find the time it takes for the decay rate to fall to 0.58 of its initial rate. Let's call this time "t".

7. Using the formula for the decay rate, we can write: 0.58 * R₀ = R₀ * e^(-λt).

8. Simplifying the equation, we get: 0.58 = \(e^{(-\lambda t\)).

9. Taking the natural logarithm of both sides, we have: ln(0.58) = -λt.

10. Substituting the value of λ from step 5, we get: ln(0.58) = -(ln(2) / 210) * t.

11. Solving for t, we have: t = (ln(0.58) * 210) / ln(2).

12. Evaluating the expression, we find: t ≈ 546.

13. Therefore, it would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.

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Answer:

Genes provide instructions for making proteins but they do not build the proteins themselves. Why do some organisms make one type of protein for a feature and others make two? An organism has two copies of a gene for each feature; these can be the same version or different.

Explanation:

The approximate volume of the woman's body is 55.9 m^3.

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Answer:

The Moon blocks the suns light from hitting the surface of the earth

Answer:

The Moon blocks the Sun's light from hitting the surface of the Earth.

To convert this computed volume from mL to L, simply divide the provided quantity of ethanol by its density: 500g(mL0.789g)(L1000mL)=0.633L. 500g(mL0.789g)(L1000mL) = 0.633L.

Ingestion, inhalation, and skin absorption of ethanol are all dangerous. Frequent contact can cause the skin to become dry, which can cause it to become itchy, crack, and peel. The central nervous system, the eyes, and the upper respiratory tract can all be affected by ethanol.

The term "alcohol" refers to a wide variety of compounds that are created when one atom of carbon interacts with oxygen, hydrogen, and other atoms. Yet, all alcohol in alcoholic beverages is a particular little molecule known as ethanol.

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Answer:

Explanation:

The mass of the car can be found by using the formula

\(m = \frac{f}{a} \\ \)

f is the force

a is the acceleration

From the question we have

\(m = \frac{11968}{8.8} \\ \)

We have the final answer as

Hope this helps you

Answer:

\(\displaystyle 1360\:kg.\)

Explanation:

\(\displaystyle am = F_{net} \\ \\ \frac{11968}{8,8} = \frac{8,8m}{8,8} \\ \\ \boxed{1360 = m}\)

I am joyous to assist you at any time.

Answer:

D - Water

Explanation:

Answer: C. Balanced

Explanation:

I took the test and got it right.

The potential energy of the roller coaster is 176,400 J (joules).

The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.

In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).

Using the formula, we can calculate the potential energy:

PE = mgh

= (900 kg)(9.8 \(m/s^2\))(20 m)

= 176,400 J

Therefore, the potential energy of the roller coaster is 176,400 J (joules).

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The vertical component of the force being applied to the beam by the high-tension cable is 36.37 N.

Calculation of the cable's tension-

Utilizing the moment principle, determine the cable's tension:

Torque clockwise = TL sin∅

Counterclockwise torque = 1/2WL

TL sin∅ = 1/2WL

⇒T sin∅ = 1/2W

⇒T = W/2sin∅

⇒T = (29* 9.8)/ (2*sin57)

⇒T = 169.43 N

Calculation of the vertical component of the force-

Forces that operate perpendicular to the surface vertical plane are called the vertical force. Gravity always pulls objects straight down to the earth's core.

T+F = W

⇒F = W-T

⇒F = (21*9.8)-169.43

⇒F = 36.37 N

So, the force on the beam has a vertical component of 36.37 N.

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Answer:

t = 17.68s

Explanation:

In order to calculate the total elapsed time that skydiver takes to reache the ground, you first calculate the distance traveled by the skydiver in the first 5.00s. You use the following formula:

\(y=y_o-v_ot-\frac{1}{2}gt^2\)            (1)

y: height for a time t

yo: initial height = 1000m

vo: initial velocity = 0m/s

g: gravitational acceleration = 9.8m/s^2

t: time = 5.00 s

You replace the values of the parameters to get the values of the new height of the skydiver:

\(y=1000m-\frac{1}{2}(9.8m/s^2)(5.00s)^2\\\\y=877.5m\)

Next, you take this value of 877.5m as the initial height of the second part of the trajectory of the skydiver. Furthermore, use the value of 7.00m/s as the initial velocity.

You use the same equation (1) with the values of the initial velocity and new height. We are interested in the time for which the skydiver arrives to the ground, then y = 0

\(0=877.5-7.00t-4.9t^2\)       (2)

The equation (2) is a quadratic equation, you solve it for t with the quadratic formula:

\(t_{1,2}=\frac{-(-7.00)\pm \sqrt{(-7.00)^2-4(-4.9)(877.5)}}{2(-4.9)}\\\\t_{1,2}=\frac{7.00\pm 131.33}{-9.8}\\\\t_1=12.68s\\\\t_2=-14.11s\)

You use the positive value of t1 because it has physical meaning.

Finally, you sum the times of both parts of the trajectory:

total time = 5.00s + 12.68s = 17.68s

The total elapsed time taken by the skydiver to arrive to the ground from the airplane is 17.68s

Answer:

okay, So Um,

Explanation:

BTW, There are only 50 points, brainly subtracts half of the points