To lift a gallon of milk from the refrigerator, 50 j of work is done. how much power is needed if the milk is lifted in 0.5 s?

Answer:

A centripetal force is any force that induces circular motion in an object. How is the centripetal force related to the radius of the circular path the mass is moving on? The force is inversely proportional to the radius of the path.

Answer:

(A) Fossil Fuels

Answer:

Fossil Fuels

Explanation:

That’s what CK12 told me

Super-bright stars are not found near the Sun because they are short-lived and have a high mass. Such stars exhaust their fuel quickly and undergo explosive events, resulting in their short lifespan and absence in the vicinity of the Sun.

Super-bright stars, which can be more than 50,000 times more luminous than the Sun, are not found near the Sun due to their nature and lifespan. These extremely luminous stars are typically massive and have a high rate of energy production. However, their high mass leads to rapid consumption of fuel, causing them to burn through their hydrogen reserves relatively quickly. As a result, these stars have shorter lifespans compared to less luminous stars like the Sun. Since the Sun is a relatively long-lived star with a moderate luminosity, it does not fall into the category of super-bright stars. Therefore, super-bright stars are not commonly found in the immediate vicinity of the Sun.

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The resulting pressure is 6 atm.

Boyle's Law, Charle's Law, and Guy-Lussac's law are all combined to form the so-called "combined gas law." It enables us to figure out how pressure, temperature, and volume vary during any physical process.

The combined gas law :

\(\frac{P_{1}V_{1} }{T_{1} } =\frac{P_{2} V_{2} }{T_{2} }\)

Where, P = pressure

V = volume

T = temperature

The system's condition prior to and following a physical process is represented by the subscripts 1 and 2, respectively.

\(V_{2} =V_{1} *0.5\\T_{2} =T_{1} *3\)

By putting the values:

\(\frac{1 atm*V_{1} }{T_{1} } =\frac{P_{2}*V_{1}*0.5 }{T_{1}*3 }\)

1 atm = \(\frac{P_{2} *0.5}{3}\)

\(P_{2} = 6 atm\)

Hence, the resulting pressure is 6 atm.

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\(\\ \rm\rightarrowtail W=Fx\)

\(\\ \rm\rightarrowtail 12=1.6F\)

\(\\ \rm\rightarrowtail F=7.5N\)

Now

\(\\ \rm\rightarrowtail F=-Kx\)

\(\\ \rm\rightarrowtail 7.5=-1.6k\)

\(\\ \rm\rightarrowtail k=-4.68N/m\)

Tardigrades related to astronomy as they can survive in extreme, harsh environments, including space for long time without oxygen.  The correct option is A , B and C.

A special adaptation that allows the tiny animal known as the tardigrade to curl up into a dry, lifeless ball and survive for decades.

Tardigrades can undergo utter vacuum and intense pressures more than five times as in the deepest ocean. Temperatures up to 300F and as low as -458F is maintained.

They survive in space and for long time for about 10 days. They can live without water for decades.

Thus, the correct option is A , B and C.

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The mass of the car is calculated as 1021.86 kg. We can calculate the mass of the car by using the formula: mass = Force / acceleration

Given information: Acceleration of the car = 1.83 m/s²

Force acting on the car = 1870 N

We know that Force = mass × acceleration

According to the question, we need to find the mass of the car. We can calculate the mass of the car by using the formula: mass = Force / acceleration

Putting the values in the above equation, we get mass = 1870 N / 1.83 m/s²

So, the mass of the car is: mass = 1021.86 kg

Therefore, the mass of the car is 1021.86 kg.

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The correct statement regarding a short circuit is that it is an accidental low-resistance connection in a circuit, typically when the power is connected directly to ground.

A short circuit occurs when current flows through an unintended path with low resistance, bypassing the normal load.

This can cause excessive current flow, overheating, and potential damage to the circuit or even start a fire.

It is important to note that a short circuit can be dangerous and should be addressed immediately to prevent any harm.

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Answer:

66.8

Explanation:

hope this helps

Answer:

Explanation:

\((8.62 \times 10 - 2) - (1.94 \times 10 - 2)\)

Follow the PEDMAS order of Operation

\(8.62 \times 10 - 2 - 1.94 \times 10 + 2 \\ 86.2 - 2 - 19.4 + 2 \\ 86.2 - 2 - 17.4 \\ = 66.8\)

Given W (work) = 300J

F (force) = 75N

s (displacement) = ?

We know that, W = Fs

So,

300 J = 75N × s

= 300J/75N = s

= 4m = s

So, I traveled 4m.

Both Coulomb and gravitational forces cause falling and orbiting, indicating that they have similar underlying principles.

The fact that both Coulomb and gravitational forces lead to objects falling towards each other and orbiting around each other suggests that these forces have similar underlying principles.

Both forces involve the interaction between two objects, with the magnitude of the force dependent on the distance between them.

Furthermore, both forces obey an inverse-square law, meaning that the strength of the force decreases with the square of the distance between the objects.

While the Coulomb force is responsible for interactions between charged particles, the gravitational force is responsible for the interactions between massive objects.

However, the similarities in their underlying principles suggest a deeper connection between these forces that is still not fully understood.

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The word "water cycle" refers to the ongoing process that transfers water from the earth to a atmosphere and back.

The hydrologic cycle, another name for the water cycle, describes where and how water is kept on Earth.

Thus, the term "water cycle" refers to the ongoing process that transfers water from the earth to a atmosphere and back.

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Answer:

0 m/s

Explanation:

At the highest point, the vertical velocity is 0 m/s.

There's no horizontal velocity.

So the total velocity at the highest point is 0 m/s.

Answer:

you have to match the letters in the picture to the list of energy types

To find the number of regular (statute) miles in 1 nautical mile, we need to determine the length of the arc on the surface of the earth that corresponds to 1 nautical mile.

We are given that the central angle formed at the center of the earth has a measure of 1'. We know that the circumference of a circle is given by 2πr, where r is the radius of the circle. In this case, the radius of the earth is given as 4,000 miles.To find the length of the arc corresponding to 1', we can use the formula for the circumference of a circle and convert the angle measure from minutes to radians:C = 2πr
Arc Length = C * (θ/360) (where θ is the angle measure in degrees)In this case, the angle measure is given as 1', which is equal to 1/60 degrees or (1/60) * (π/180) radians.
Arc Length = 2π * 4,000 miles * [(1/60) * (π/180)]
Simplifying the expression:Arc Length = (2 * π * 4,000 * 1 * π) / (60 * 180) miles
Arc Length = (8 * π² * 4,000) / (60 * 180) miles
Arc Length ≈ 110.6 miles
Therefore, the length of the arc on the surface of the earth that corresponds to 1 nautical mile is approximately 110.6 miles.To find the number of regular (statute) miles in 1 nautical mile, we can divide 1 nautical mile by the length of the arc:Number of regular miles in 1 nautical mile = 1 nautical mile / 110.6 miles
Number of regular miles in 1 nautical mile ≈ 0.00904 miles
Rounded to the nearest hundredth of a mile, the number of regular miles in 1 nautical mile is approximately 0.01 miles.

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To make t1 the subject formula, we need to isolate t1 on one side of the equation and simplify the expression.

Assuming we have an equation with t1 on one side and other variables on the other side, we can use algebraic operations to isolate t1.

For example, let's say we have the equation A = B*t1 + C, and we want to make t1 the subject formula.

We can start by subtracting C from both sides of the equation to get:

A - C = B*t1

Next, we can divide both sides of the equation by B to isolate t1:

(t1) = (A - C) / B

Now we have made t1 the subject formula and can easily plug in values for A, B, and C to solve for t1.

To make t1 the subject formula, we need to use algebraic operations to isolate t1 on one side of the equation.

Once we have done this, we can simplify the expression and easily solve for t1 by plugging in values for the other variables.

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The energy that is stored in the spring is 0.018 J.

Hooke's law states that as long as the elastic limit is not exceeded, the extension is directly proportional to the load.

Now we have the following;

The compression =  20 mm or 0.02 m

The spring constant = 90kN/m

Energy stored in the spring = 1/2Ke^2

= 1/2 *  90kN/m * (0.02 m)

= 0.018 J

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The information given on the X-axis of the graph attached is the years from 1920-2005 (option B).

A graph in mathematics or statistics is a data chart (graphical representation of data) intended to illustrate the relationship between a set (or sets) of numbers (quantities, measurements or indicative numbers) and a reference set.

A graph consists of two axes namely; X-axis and Y-axis. The x-axis on a graph is usually drawn left to right and usually shows the range of values of an independent variable.

On the other hand, the Y-axis is the axis on a graph that is usually drawn from bottom to top and usually shows the range of values of variable dependent on one other variable.

Therefore, according to the graph illustrated above, the x-axis shows the years from 1920-2005.

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True

Explanation:

Average speed is a scalar magnitude as opposed to average velocity which is a vector. The unit of measurement in the International System (S.I.) of the average speed is the meter per second (m/s).

a. classify objects in space.The function of space observatory technology is to classify objects in space.

An astronomical observatory, especially a satellite, that observes celestial objects outside Earth's atmosphere is referred to as a space observatory. A space observatory is a telescope placed in outer space to observe planets, stars, and other objects in the universe.What are the functions of space observatory technology?The function of space observatory technology is to classify objects in space. This function is achieved by collecting and analyzing data on celestial bodies like planets, stars, and other objects, which helps astronomers determine their composition, structure, and other physical properties. This helps to advance our understanding of the universe, from studying star formation to examining the atmospheres of exoplanets, which could be habitable. Some of the space observatory technologies that perform this function include the Hubble Space Telescope, the Chandra X-Ray Observatory, and the Spitzer Space Telescope.

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Answer:

One of the more important properties of sound is that its speed is nearly independent of frequency. ... Therefore, the relationship between f and λ is inverse: The higher the frequency, the shorter the wavelength of a sound wave. The speed of sound can change when sound travels from one medium to another.

The sandbag is tumbling down while the balloon is rising. Motion is present in both the uphill and downward 108m directions.

Velocity is a vector representation of a particle's or object's motion with regard to time. The standard unit measuring velocity magnitude is the meter per second, which is commonly referred to as speed.

Simply said, velocity is the rate of motion of an object in a specific direction. Using an automobile driving north on the a highway as an example, or a rocket after it has launched, as an example of speed.

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When a beam of 11 keV X-rays illuminates a sample, the angles that will produce diffraction maxima of the first, second, and third order can be calculated using Bragg's law, which states that nλ = 2d sin(θ), where n is the order of diffraction, λ is the wavelength of the X-rays, d is the spacing between crystal lattice planes, and θ is the angle of incidence.

Bragg's law can be used to calculate the angles for diffraction maxima. For the first-order maximum (n = 1), we have λ = 2d sin(θ₁). Rearranging the equation, we get sin(θ₁) = λ / (2d). Substituting the values, with λ representing the wavelength of 11 keV X-rays (which can be converted to the corresponding wavelength), and the known spacing between lattice planes, we can solve for θ₁.

For the second-order maximum (n = 2), the equation becomes λ = 2d sin(θ₂). Solving for sin(θ₂) and substituting the values, we can find θ₂.

Similarly, for the third-order maximum (n = 3), we use λ = 2d sin(θ₃) to determine sin(θ₃) and find θ₃ by substituting the values.

By calculating these angles using Bragg's law, we can determine the angles that will produce diffraction maxima of the first, second, and third order for the given beam of 11 keV X-rays illuminating the sample.

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Answer:

value of x=35°

y=72.5°

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According to the given statement, The mass defect of this chlorine nucleus in atomic mass units is 0.320 u.

To calculate the mass defect, we need to use the equation:
mass defect = (atomic mass of protons + atomic mass of neutrons - mass of nucleus)
First, we need to convert the binding energy from MeV to Joules using the conversion factor 1.6 x 10^-13 J/MeV:
298 MeV x 1.6 x 10^-13 J/MeV = 4.77 x 10^-11 J
Next, we can use Einstein's famous equation E=mc^2 to convert the energy into mass using the speed of light (c = 3 x 10^8 m/s):
mass defect = (4.77 x 10^-11 J)/(3 x 10^8 m/s)^2 = 5.30 x 10^-28 kg
Finally, we can convert the mass defect from kilograms to atomic mass units (u) using the conversion factor 1 u = 1.66 x 10^-27 kg:
mass defect = (5.30 x 10^-28 kg)/(1.66 x 10^-27 kg/u) = 0.319 u
Therefore, the answer is (a) 0.320 u.
In summary, the binding energy of an isotope of chlorine with a mass defect of 0.320 u is 298 MeV. The mass defect can be calculated using the equation mass defect = (atomic mass of protons + atomic mass of neutrons - mass of nucleus).

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Answer:

the amount of energy stored as thermal energy is 2.4 Joules.

Explanation:

The amount of energy stored as thermal energy can be calculated by considering the initial kinetic energy of the ball and the final thermal energy after the collision.

The initial kinetic energy of the ball can be calculated using the formula:

Kinetic energy = (1/2) * mass * velocity^2

Plugging in the values:

Kinetic energy = (1/2) * 1.2 kg * (2 m/s)^2

= 2.4 J

Kinetic energy = 29.912 J

Given

mass = 0.155 kg

vo=initial velocity = 31.4 m/s

h/d=30 m

Required

KE=kinetic energy

Solution

vt²=vo²-2ad⇒vt=final velocity

vt²=31.4²-2.10.30⇒g=10 m/s²

vt²=985.96-600

vt²=385.96 m/s

Kinetic  energy (KE)

\(\tt KE=\dfrac{1}{2}mv^2\\\\KE=\dfrac{1}{2}\times 0.155.\times 385.96\\\\KE=29.912~J\)

Answer:

The answer is 30.8 (J)

Explanation:

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A secondary group is impersonal and goal-oriented in contrast to a major group. It only touches a small portion of its members' life. Secondary organizations arise to carry out a particular task.

Larger and more impersonal secondary groups are frequent. Additionally, they could be time- and task-limited. The roles of these groups are more goal- or task-oriented than emotional, serving an instrumental purpose as opposed to an expressive one. A secondary group can be one's coworkers or other classmates.

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