Increasing the temperature of object by 20K = C *
A. 20 C
B. 293.15 C
C. -253.15 C
D. None of the above

The two instances where there is no change in the state of motion in an object on application of force on the object are when an object is at rest, and when an object is in motion,  

In either case, the net force on the object is zero, this is referred to as Newton's First Law, which states that if the net force acting on an object is zero, the object will remain at rest or in a state of uniform motion. This law is also known as the law of inertia. The primary implication of Newton's First Law is that an object will remain in a state of uniform motion until acted upon by an unbalanced force.

As a result, any object at rest or in uniform motion will remain so until a net external force acts on it. The object will accelerate in the direction of the net force applied to it. For instance, if we apply a force of 10 N to a book resting on a table, it will not move if the frictional force is more significant than the applied force. So therefore when an object is at rest, and when an object is in motion, are the two instances where there is no change in the state of motion of an object on the application of force on the object.

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Exactly two rays are required to locate the picture point of the a point object.

No image is created so when object is at the focal point.Lesson 5 has covered this topic, although the refracted beams do not converge or diverge.The light rays cannot create an image since they are moving parallel to one another after refractive error.

The picture is at infinity when the focal point is that object.The picture behind the mirror becomes virtual or upright as the object travels nearer the mirror within the focal point.

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Answer:

stellar fusion

Explanation:

formation of moons expansion of the universe formation of stars, formation of planets, formation of nebulae

Here, the hydrogen atoms are combined to form a helium atom, and during this process of fusion, a significantly large amount of energy is released. Thus, stars produce a large amount of energy by forming helium from the combination of hydrogen in its core. Hence, the correct answer is option (C).

Answer:

A. Creating helium from hydrogen in its core.

Explanation:

Sacrificed my grade for points I hope it helps

Trigonometry allows finding the result for the decomposition of the displacement vector is:  

           x = 2.12 mi

           y = -2.12 mi

Displacement is a vector quantity, which has modulus and direction.

The cardinal points are a reference system with respect to which measurements are made, this system is related to the Cartesian system with the East in the positive direction of the x-axis and the North with the positive direction of the y-axis.

In the attached we can see a diagram of the vector and its components, the indicated direction of 45 S of the E, in the Cartesian system where the angles are measured from the positive side of the x-axis in a counterclockwise direction is:

             θ = 360 - 45

             θ = 315º  

Let's use trigonometry to decompose the vector d = 3 mi  

              cos 315 = \(\frac{x}{d}\)  

              sin 315 =  \(\frac{y}{d}\)  

              x = d cos 315

              y = d sin 315

Let's calculate

              x = 3 cos 315

              y = 3 sin 315

              x = 2.12 mi

              y = -2.12 mi

The negative sign indicates that the displacement is towards the negative side, that is, towards the South.

In conclusion using trigonometry we can find the result for the decomposition of the displacement vector are:  

           x = 2.12 mi

           y = -2.12 mi

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In quantum mechanics, an orbital is a mathematical function that describes the probability of finding an electron in a particular region of space around an atom's nucleus.

Quantum refers to the smallest indivisible unit of energy, matter, or any other physical quantity. It is a term used in quantum mechanics, the branch of physics that describes the behavior of matter and energy at the scale of atoms and subatomic particles.

Orbitals are characterized by three quantum numbers: the principal quantum number (n), the azimuthal quantum number (l), and the magnetic quantum number (m).

The principal quantum number determines the size and energy level of the orbital, while the azimuthal quantum number determines the shape of the orbital. The magnetic quantum number determines the orientation of the orbital in space.

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Correct question:

Identify each of the following orbitals, and determine the n and l quantum numbers. Explain your answers.

The moment of inertia of a solid sphere in orbital motion of a large circle is higher than that of a sphere in orbital motion of a small circle.

The moment of inertia of a sphere is the product of its mass and the square of its radius divided by 2. This is because the sphere is uniform and symmetrical, and all points are equidistant from the Centre. In physics, an orbit is the path that a body follows as it revolves around another body in space.

The moment of inertia of a solid sphere when it is in orbital motion of a large circle is calculated using the formula:2/5 MR² where M is the mass of the sphere,  R is the radius of the sphere

The moment of inertia of the sphere is given by this formula, which is derived from the basic definition of moment of inertia. As the sphere is moving in a large circle, its moment of inertia is greater than if it were moving in a small circle because the radius of the circle affects the moment of inertia.

Therefore, the moment of inertia of a solid sphere in orbital motion of a large circle is higher than that of a sphere in orbital motion of a small circle.

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Answer:

420mph

Explanation:

This is a weird thing to do for an account.

In exploring human behavior, contemporary psychologists rely most heavily on the scientific method and empirical research. The scientific method involves a systematic approach to studying and understanding human behavior through observation, experimentation, and data analysis. It provides a framework for generating theories, designing experiments, collecting data, and drawing conclusions based on evidence.

Empirical research is a central component of contemporary psychology. It involves gathering and analyzing data to test hypotheses and investigate various aspects of human behavior. Psychologists employ a range of research methods, including experiments, surveys, observations, and case studies, to collect data that can be objectively analyzed and interpreted.

Contemporary psychologists place great emphasis on evidence-based practices, which involves using scientific evidence to inform and guide their understanding of human behavior. They strive to gather reliable and valid data, draw conclusions based on the evidence, and continually refine their theories and knowledge through ongoing research.

Furthermore, contemporary psychologists often draw from multiple perspectives and theories to understand human behavior comprehensively. Psychological research encompasses various subfields, such as cognitive psychology, social psychology, developmental psychology, and clinical psychology, each focusing on specific aspects of human behavior.

The reliance on the scientific method and empirical research in contemporary psychology reflects the field's commitment to objectivity, rigor, and the pursuit of evidence-based knowledge. By utilizing these approaches, psychologists can better understand the complexities of human behavior and contribute to the development of effective interventions, treatments, and strategies to improve individuals' well-being.

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Answer:

89.5 Hz

Explanation:

The relationship between the frequency and the wavelength is given by the following formula:

\(\lambda = \frac{c}{f}\\\\\)

where,

f = frequency

c = speed of light

λ = wavelength

Since the speed of light is constant. Therefore the formula suggests an inverse relationship between the frequency and the wavelength. Hence, the station with the lowest frequency will have the longest wavelength.

Therefore, the answer is:

89.5 Hz

Answer:

The atmosphere changes the temperature of the planet because of its transparency.

On Earth, sunlight reaches the Earth, which warms it. On a planet such as Jupiter, the planet is entirely surrounded in a thick and toxic gas. This limits the amount of sunlight that can reach the surface, which also decreases the temperature.

The time it will take her to land on the other side is 0.5 seconds.

In a triangle with three angles of 30°, 60°, and 90°, the hypotenuse is twice as long as the shorter leg and three times as long as the latter. To understand why this is the case, consider that the triangle is a right triangle given these numbers according to the Converse of the Pythagorean Theorem. The lengths of the three sides in a triangle of this kind are referred to as a Pythagorean triple.

distance = velocity x time

In this case, the distance is 3 meters and the velocity is 6 m/s, so:

3 = 6 x time

Solving for time, we get:

time = 3/6 = 0.5 seconds

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The frequency of a particular spectral line of the sun compare with the frequency of that line observed from a source on earth may differ slightly due to the Doppler Effect, the difference is typically small and can be accurately measured.

When comparing the spectral lines of the sun with those observed from Earth, it's important to consider the Doppler Effect, which causes the wavelengths of light to appear shifted when an object is moving relative to an observer. The frequency of a particular spectral line of the sun will appear slightly different than the frequency of that line observed from a source on Earth due to the Doppler Effect. This effect causes the light from the sun to appear slightly redshifted or blueshifted depending on the relative motion of the sun and Earth.

However, the difference in frequency is typically small and can be accurately measured by modern telescopes. By comparing the frequencies of the spectral lines observed from the sun and Earth, astronomers can study the motion of celestial bodies and determine their chemical compositions. In conclusion, while the frequencies of particular spectral lines of the sun and those observed from a source on Earth may differ slightly due to the Doppler Effect, the difference is typically small and can be accurately measured.

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The magnetic field at 10.76 m below the high voltage power line is approximately 41,835,820 µT when the line carries 450 MW at a voltage of 300,000 V. Rounded to the nearest integer, the magnetic field is 41,836 µT.

To calculate the magnetic field at a distance below a high voltage power line, we use the formula \(B=\frac{u0IH}{2\pi r}\)

Current, I = 450 MW = 450 × 10^6 W

Height, H = 0 m (since the power line is at ground level)

Distance below the power line, r = 10.76 m

Using the formula for the magnetic field, we substitute the given values:

\( B = \frac{{(4\pi \times 10^{-7} \, \text{{T}} \cdot \text{{m/A}}) \cdot (450 \times 10^6 \, \text{{W}}) \cdot (0 \, \text{{m}})}}{{2\pi \cdot 10.76 \, \text{{m}}}} \)

Simplifying the expression:

\( B = \frac{{450 \times 10^6 \, \text{{W}}}}{{10.76 \, \text{{m}}}} \)

Calculating the value:

\( B \approx 41,835,820 \, \text{{T}} \)

Rounding the magnetic field to the nearest integer:

\( B \approx 41,836 \, \mu\text{{T}} \)

Therefore, the magnetic field at 10.76 m below the high voltage power line is approximately 41,836 µT (rounded to the nearest integer).

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The resultant force due to the cumulative forces acting on the body is 6i+6j N.

Force is a vector quantity and the direction in which they act affects the total magnitude of force. A vector quantity has both magnitude and direction.

And to add a vector one needs to take account of the direction as well.

The force acting on the body can be written as follow:

1. 10N along x-axis ---- 10i

2. 6N along y-axis ---- 6j

3. 4N along negative x-axis ----- -4i

The resultant force is the sum of the above vector:

10i +6j + (-4i) = 6i+6j N

The magnitude of the total force is

\(\sqrt{6^2+6^2}\\ =\sqrt{36+36}\\ =\sqrt{72}=6\sqrt{2} N\)

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The complete question is:

Find the resultant of the following forces

(i) 10 N along the x-axis

(ii) 6 N along the y-axis

(iii) 4 N along the negative x-axis

The resultant displacement of the feather  be 50.33 m.

The term "displacement" refers to a shift in an object's position. It is a vector quantity with a magnitude and direction. The symbol for it is an arrow pointing from the initial location to the ending place.

For instance, if an object shifts from location A to position B, its position changes. Displacement is the term used to describe this shift in an object's position.

Given that: A bird drops a feather from the roof of a 13.1 m tall building. The feather is blown 48.6 m west before falling to the ground.

So,  the resultant displacement of the feather  be = √(13.1² + 48.6²) m = 50.33 m.

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Answer:

B(Ambassador)

Explanation:

The president appoints ambassadors to foreign countries to represent the United States.

Answer:

Are you trying to calculate the net force?

If so, it would be 3 N Up.

This is because the 15 N forces from the left and right cancel out, leaving only the upwards 15 N force, and the 12 N force. However, we have to subtract 12 from 15, leaving the final net force to be 3 N Up.

Let me know if this helps!

Answer:

the acceleration due to gravity, g is zero (0)

the time of the motion is 0.2 s

Explanation:

Given;

initial velocity of the student, u = 15 m/s

distance traveled by the student, x = 3 m

The motion of the student is directed towards the horizontal and the acceleration due to gravity, g is zero (0).

The time of the motion is calculated as;

x = ut + ¹/₂gt²

x = ut + ¹/₂(0)t²

x = ut

t = x/u

t = 3 / 15

t = 0.2 s

Therefore, the time of the motion is 0.2 s

If Troy has a high set point, it means that his body is predisposed to maintain a certain weight, which is difficult to change even with dieting and exercise.

Troy's high set point makes it difficult for him to lose weight through dieting because his body is biologically programmed to resist weight loss and maintain a stable weight.

The set point is the weight range that the body defends through various physiological mechanisms, including metabolic rate, hunger, and satiety signals.

When a person tries to lose weight through caloric restriction, their body responds by slowing down the metabolism and increasing hunger signals, making it harder to stick to the diet and maintain the weight loss.

This is why a focus on healthy habits and lifestyle changes, rather than quick-fix diets, is often recommended for sustainable weight management.

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Answer:

20

Explanation

f=Kgm/s
2multiply by 10=20

Give brainliest

Explanation:

Vi = 0 m/s

Vf = 72 km/hr = (72×5)/18 = 20 m/s

t = 8 s

Vf = Vi + a×t

20 = 8a

a = 2.5 m/s^2

Answer:

Initial Velocity (u) = o m/s

Final Velocity (V) =(72*1000)/1*60*60 m/s

= 20m/s

time (t) =8 sec

Acceleration(a)= v-u /t

=(20-0)/8

=2.5 m/s^2

this is the answer i just did the problem

To further stretch the spring from l m to L m, the work done is given by W = 0.5k (L² - l²), where k is the spring constant and l and L are the initial and final lengths respectively.

Given, it requires a force of 18 N to hold a spring stretched l m beyond its natural length.Since the work done is equal to the change in potential energy, therefore, the work required to further stretch the spring from l m to L m is given by:

W = Uf - Ui

= 0.5 k L² - 0.5 k l²

Now, we have k = F / x where F is the force required to stretch the spring by a distance x.So,

k = 18 / l

Also, the force required to stretch the spring to length L is given by:

F' = k (L - l) = 18 (L - l) / l

Therefore, the work done is given by:

W = 0.5 k (L² - l²) = 0.5 x 18 / l x (L² - l²) = 9 (L² - l²) / l

Hence, the work done to further stretch the spring from l m to L m is 9 (L² - l²) / l J.

Therefore, the work required to stretch the spring from l m to L m is given by the equation: W = 9 (L² - l²) / l.

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The initial potential energy of the swing is 0 J. The final potential energy of the swing is 345.35J. The change in potential energy of the swing is 345.35J. And the work done is 345.35J.

The initial potential energy of the swing is given by:

PE_i = mgh_i

PE_i = 35 kg * 9.81 m/s^2 * 0 m

PE_i = 0 J

where m is the mass of the tire, g is the acceleration due to gravity, and h_i is the initial height of the tire.

The final potential energy of the swing is given by:

PE_f = mgh_f

PE_f = 35 kg * 9.81 m/s^2 * 1.0 m

PE_f = 343.35 J

where h_f is the final height of the tire.

The change in potential energy is:

ΔPE = PE_f - PE_i

ΔPE = 343.35 J - 0 J

ΔPE = 343.35 J

Therefore, the work done on the tire is:

W = ΔPE

W = 343.35 J

So it would take 343.35 J of work to move the tire a vertical distance of 1.0 m at a constant speed of 1 m/s.

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Answer:

We can use the formula for the transformer voltage ratio, which states that the ratio of the number of turns in the primary coil to the number of turns in the secondary coil is equal to the ratio of the output voltage to the input voltage:

Np/Ns = Vp/Vs

where Np is the number of turns in the primary coil, Ns is the number of turns in the secondary coil, Vp is the input voltage, and Vs is the output voltage.

We know that Vp = 220 V and Vs = 140 V, and we are trying to find Ns. We also know that Np = 30, since that is the number of turns in the primary coil. Substituting these values into the formula, we get:

30/Ns = 220/140

Simplifying the right side of the equation, we get:

30/Ns = 11/7

Cross-multiplying, we get:

11Ns = 210

Dividing both sides by 11, we get:

Ns = 19

Therefore, the answer is b.) 19.

Answer:

The amount of sunlight

Explanation:

The sun is independent but the plants are dependent on the sunlight

Answer:

3 is right i guss look : 100N-20N=80N

The relationship between instantaneous speed and instantaneous velocity is that instantaneous speed is the magnitude of the instantaneous velocity.

Instantaneous velocity is the rate of change of position for a very small interval of time. The interval of time so that that its value is almost zero. Instantaneous speed is the magnitude of instantaneous velocity without any direction.

The instantaneous velocity is vector quantity just like velocity and the instantaneous velocity is a scalar quantity just like speed. The value of if instantaneous velocity with direction is instantaneous velocity.

Therefore, the relationship between instantaneous speed and instantaneous velocity is that instantaneous speed is the magnitude of the instantaneous velocity.

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