Why do we see different stars at night during the year

In a fusion reaction, the binding energy per nucleon of the fusion product generally compares to that of the pieces that combined to form it in the following way:

1. The product has a greater binding energy per nucleon than the pieces.

This is because, during fusion, lighter nuclei combine to form a heavier nucleus, which results in a more stable configuration and higher binding energy per nucleon. This process releases energy as a consequence of the increased stability. However, it's essential to note that the specific reaction or pieces involved may have an impact on the exact outcome.

So, to summarize, the binding energy per nucleon of a fusion product is typically greater than that of the pieces that combined to form it.

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The given statement 'A positive magnification means the image is inverted compareed to the object' is false. Because when the image is virtual and erect then magnification is taken as positive.

a. The amount of thermal energy 'wasted' by the turbine per second = 500,000 J

b. Efficiency of the turbine = 66.7%

Energy is the ability to do work.

Energy is essential to sustain the material universe. Energy constantly flows in the universe and is transformed into various forms.

Th various forms of energy are:

When energy is lost in a system, it is usually converted to heat.

a. The amount of thermal energy 'wasted' by the turbine per second = 1,500,000 J - 1,000,000 = 500,000 J

b. Efficiency = (1,000,000/1,500,000) * 100%

Efficiency of the turbine = 66.7%

In conclusion, energy is usually lost in the form of heat or thermal energy during energy transformations.

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The formula to calculate the utilization of the second activity in a push system can be determined by dividing the total time spent on the second activity by the total time available.

In a push system, activities or tasks are performed sequentially, and the completion of one activity triggers the start of the next activity. The utilization of activity refers to the proportion of time that the activity is being used or occupied.

To calculate the utilization of the second activity in a push system, we need to determine the total time spent on the second activity and divide it by the total time available. The formula can be expressed as:

Utilization of Second Activity = (Time spent on Second Activity / Total Time Available) * 100

The time spent on the second activity refers to the duration or amount of time required to complete that specific activity. The total time available represents the total duration or available time for the entire process or system.

By using this formula, we can determine the utilization of the second activity, which provides insight into how efficiently the activity is being utilized within the overall system.

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a tendency of a body to do nothing or to remain unchanged.

Answer:

a tendency to do nothing or to remain unchanged.

Explanation:

By Using Euler's method with two steps, we can find the approximate value of Y(2) is 2.125. , where Y is the solution of the initial value problem dy/dx = x - y, and Y(1) = 3.

Euler's method is defined as a numerical technique which is  used to approximate solutions into ordinary differential equations. The method includes dividing the interval of interest into smaller steps and thereafter approximating the solution at each step by using the derivative of the function.

In this case, we are given the initial value problem dy/dx = x - y, with the initial condition Y(1) = 3. To approximate Y(2) using Euler's method with two steps, we will divide the interval [1, 2] into two equal steps.

Step 1:

We start with the initial condition Y(1) = 3. Using the differential equation dy/dx = x - y, we can approximate the value of Y at the midpoint of the interval [1, 2].

Using the step size h = (2 - 1) / 2 = 0.5, we can calculate Y(1.5) as follows:

Y(1.5) ≈ Y(1) + h × (x - y) = 3 + 0.5 × (1.5 - 3) = 3 + 0.5 × (-1.5) = 2.25

Step 2:

Now, using the value of Y(1.5) as the new approximation, we calculate Y(2) using the same process:

Y(2) ≈ Y(1.5) + h × (x - y) = 2.25 + 0.5 × (2 - 2.25) = 2.25 + 0.5 × (-0.25) = 2.125

Thus,  by using Euler's method with two steps, the approximate value of Y(2) is 2.125.

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The complete question is

Use Euler's Method With Two Steps To Approximate Y(2), Where Y Is The Solution Of The Initial Value Problem: Dy : X − Y, Y(1) = 3

Answer:

A

Explanation:

Hopefully this helps

Answer:

A

Explanation:

ANSWER

False.

EXPLANATION

In radioactive decay (or nuclei decay), an unstable nucleus emits radiation into a nucleus that is table and has less energy and a lower mass.

Therefore, nuclei decay from a less stable form to a more stable form.

The answer is false.

Answer:

\(v = 23.88m/s\)

Explanation:

Given

\(r = 225m\)

\(\theta = 14.5^\circ\)

Required: Determine the speed of the train

To solve this question, we apply the concept of tension.

Let the tension on the cord be T.

Tension is calculated as:

\(T = mg\)

So, the tensions acting on the system are:

\(T*sin(\theta) = \frac{mv^2}{r}\) and

\(T*cos(\theta) = mg\)

Divide the equations by one another

\(\frac{T*sin(\theta)}{T * cos(\theta)} = \frac{mv^2}{mgr}\)

\(\frac{sin(\theta)}{cos(\theta)} = \frac{v^2}{gr}\)

\(tan(\theta) = \frac{v^2}{gr}\)

Make v^2 the subject

\(v^2 = grtan(\theta)\)

Take the square root of both sides

\(v = \sqrt{grtan(\theta)\)

Substitute values for g (9.8), r 225 and \(\theta\) (14.5)

\(v = \sqrt{9.8 * 225 * tan(14.5^\circ)}\)

\(v = \sqrt{9.8 * 225 * 0.2586}\)

\(v = \sqrt{570.213}\)

\(v = 23.88m/s\)

Hence, the trains' velocity is approximately 23.88m/s

Answer:

W = 16875 J

Explanation:

We have,

Mass of a motorcycle together with its rider is 150 kg

It is required to find the work is needed to set its movement at 15 metre per second. The work done is given by :

\(W=\dfrac{1}{2}mv^2\)

Plugging all the values in above formula such that :

\(W=\dfrac{1}{2}\times 150\times (15)^2\\\\W=16875\ J\)

So, the work of 16875 J is needed.

Answer:

Density Definition: Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density Symbol: D or ρ Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.

Explanation:

Approximately 5.9. Using Q=IT then T=Q/I so T=48/8.2=5.8536585366 Hope this helps

The correct option is B. If the skaters push away from each other, their momentum is equal but opposite.

Mass is a fundamental concept in physics that refers to the amount of matter in an object. It is a scalar quantity that has a magnitude but no direction. Mass is typically measured in units of kilograms (kg) in the International System of Units (SI).

Mass is a property of an object that resists any change in its motion, whether it is at rest or in motion. This is described by Newton's Second Law of Motion, which states that the force applied to an object is proportional to its mass and its acceleration. This relationship is often expressed as F=ma, where F is the force applied, m is the mass of the object, and a is its acceleration.

Mass is also related to energy through the famous equation E=mc², where E is the energy of an object, m is its mass, and c is the speed of light in a vacuum.

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Complete Question:

Two skaters stand facing each other.  One skater’s mass is 60 kg, and the other’s mass is 72 kg.  If the skaters push away from each other,

1. the 60 kg skater travels at a lower momentum.

2. their momentum is equal but opposite.

3. their momentum doubles.

4. their total momentum decreases

Answer:

Mark Henry is considered as a leader as he inspired many people from his capabilities. He trained many people who wanted to become a strongest weight lifter.  

Explanation:

Mark Henry was an American weight lifter who retired at the age of 45 on 26th October 2017.  He was really strong person and has won many gold medals with his capabilities. In the childhood he was expelled from his school but he continued his journey towards his goals and became a strongest man in the world.

The distance in mm between these minima is 0.29 ×\(10^{-3}\) m

For first minima, m=1, Then,

\(a\sin \theta_1 = \lambda_1 \Rightarrow \sin\theta_1 = \frac{\lambda_1}{a} \Rightarrow \theta_1 = \sin^{-1}\left(\frac{589.1\times10^{-9}}{2.4\times 10^{-6}}\right) = 14.2^{\circ}\)

\(a\sin \theta_2 = \lambda_2 \Rightarrow \sin\theta_2 = \frac{\lambda_2}{a} \Rightarrow \theta_2 = \sin^{-1}\left(\frac{589.6\times10^{-9}}{2.4\times 10^{-6}}\right) = 14.22^{\circ}\)

Hence the required angle is , (14.22 - 14.2) = 0.02o

The distance between these two minima,

\(\Delta y = y_2 -y_1 = \frac{D}{a}\left( \lambda_2-\lambda_1\right) = \frac{1.4}{2.4\times 10^{-6}}\left(0.5\times 10^{-9} \right ) = 0.29\times 10^{-3} \hspace{2mm} m\)

This distance is best measured using a microscope.

The length of a particular path taken by an object between two points is its distance, such as the distance traveled through a maze. In some cases, such as when a ball is thrown straight up or the Earth completes an orbit, this can even be a closed distance along a closed curve that begins and ends at the same location. The mathematical term for this is the curve's arc length. It is also possible to signify the distance traveled: a "ahead" distance is positive and a "backward" distance is negative.

When building vehicles or mechanical gears, it can be helpful to take circular distance—the distance covered by a

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Answer:

Answer:

 the mass deficit is directly proportional to bond reeling

Explanation:

The effect of the mass deficit in the nuclei is

          δ = m_nucleons - m_nucleo

the delta quantity is the binding energy of the atomic nucleus,

This mass is related to energy by the Einstein relation

         ΔE = c² Δm

therefore the mass deficit is directly proportional to bond reeling

Answer:

C. Some of the mass of the four hydrogen nuclei was converted into

energy

Explanation:

Ap3x

Answer:

When two substances are mixed together, a color change is observed. This observation is not enough evidence that there is a chemical reaction happening because color changes are not indicators of chemical reaction:

Answer:

Gravity

Explanation:

Answer:

105 m

Explanation:

Given that the initial velocity of the body, u= 50 m/s in upward direction.

Acceleration due to gravity, g= 10 m / \(s ^ 2\) in the downward direction.

Let h be the height of the body when the velocity of the body is 20 m/s.

As the gravitational force acting in the downward direction, so taking it negative as

a= - 10 m/\(s ^ 2\)  in the upward direction.

By using the equation of motion \(v^2=u^2+2as\) ...(i)

Here, u= 50 m/s

v= 20 m/s

\(a=- 10 m/s^2\)

s=h

Putting all the values in the equation (i), we have

\(20^2=50^2+2(-10)h \\\\400=2500-20h \\\\h=\frac{2500-400}{20} \\\\h=105 m\)

Hence, the height of the body is 105 m.

The initial velocity of the ball cannot be found only using the given information. Horizontal distance travelled is required to calculate the initial velocity and vice-versa.

In a horizontally launched projectile motion, the initial velocity is the velocity in x-direction which is constant throughout the motion. In y-direction the initial velocity is zero. Using the information given in y-direction, vertical distance can be found.

According to kinematic equations,

Δy = \(u_{oy}\)t + 1 / 2 gt²

Δy = 0 + ( 1 / 2 ) * 9.8 * 3²

Δy = 44.1 m

For calculating factors in the x-direction,

\(V_{0x}\) = \(d_{x}\) / t

Without one of the missing factors, the other cannot be found.

Therefore, the initial velocity of the ball cannot be found only using the given information.

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In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. One can also speak of motion of images, shapes, and boundaries.

Movement of any object from one position to another position with respect to the observer is called as Motion. Motion Along a Straight Line: When an object moves along a straight line, the motion of the object is called rectilinear motion. For example; motion of a car on highway.

In physics, motion is the change in position of an object with respect to its surroundings in a given interval of time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, and speed. An object's motion cannot change unless it is acted upon by a force.

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Hope It Helps!

Answer:

Inner planets are small because the heat of the Sun baked off the hydrogen. The outer planets are large because they were colder and did not get the hydrogen baked off. Among the outer planets, they get smaller as you get further out because they formed nearer the edge of the cloud that supplied the material. There was just less to build from.

40V is needed to push 2 amperes of current through 20 ohms of resistance.

what is ohm's law?

It states that the current through a conductor between two points is directly proportional to the voltage across the two points.

V=I×R

Current equals Voltage divided by Resistance (I=V/R), Resistance equals Voltage divided by Current (R=V/I), and Voltage equals Current times Resistance (V=IR).

Given:

R=20Ω

I= 2amp

we know that,

V=I×R

V=2×20

V=40V

Thus,the voltage comes out to be 40V.

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Answer:

d. action force and the reaction force act on two different objects.

Hope you could understand.

If you have any query, feel free to ask.

In an action-reaction pair, action force and the reaction force act on two different objects.

Newton's Third Law of Motion states that "For every action, there is an equal and opposite reaction, action and reaction act on two different bodies."

It means that equal force are act on reaction force that is it is also known as reciprocal law of motion.

When considering the options,

So, In an action-reaction pair, action force and the reaction force act on two different objects. Thus, Option B is the correct answer.

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This is an interesting scenario! When a cube is balanced with one edge in contact with a table top and with its center of gravity directly above the edge, it is said to be in a state of unstable equilibrium. This means that even a slight disturbance could cause the cube to fall over.

To understand this concept, it is important to first understand what center of gravity means. The center of gravity is the point where the weight of an object is evenly distributed in all directions. In a cube, this point is located at the geometric center of the cube.

Now, in the scenario described, the cube is resting on one of its edges. This edge is acting as a pivot point or fulcrum. When the cube is in this position, its center of gravity is located directly above the pivot point. This means that the weight of the cube is evenly distributed on either side of the pivot point.

However, since the cube is in a state of unstable equilibrium, any slight disturbance could cause the weight distribution to shift. For example, if the table were to vibrate or if there were a gust of wind, the weight distribution could shift slightly, causing the cube to fall over.

When a cube is balanced with one edge in contact with a table top and with its center of gravity directly above the edge, it is in a state of unstable equilibrium. This means that even a slight disturbance could cause the cube to fall over.

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The velocity of a small ladybug that's sitting on the edge of a rotating disk (like an old vinyl album) increases as the lady bug walks along a circular path at a constant radius.

Explanation: The acceleration experienced by the ladybug is due to centripetal acceleration, which is always perpendicular to the ladybug's velocity. Because acceleration is a vector quantity, the centripetal acceleration vector constantly changes direction as it points toward the rotation axis. To comprehend why the ladybug's velocity varies as it moves around the disc, consider two distinct locations on the ladybug's path. The first location is at the top of the circle, and the second location is halfway down the circle. Because of the centripetal acceleration, the ladybug moves in a circle. As a result, it must have a net force toward the centre of the circle. The ladybug's direction of motion is perpendicular to the force acting on it. So, the ladybug accelerates toward the centre of the circle, and its speed varies. The ladybug is initially stationary when it begins its journey around the circle. When it moves along the circle path at a constant radius, its velocity grows due to centripetal acceleration. It is said that the velocity of the ladybug increases as it travels along a circular path with a constant radius. So, the correct answer is option b.

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Answer:

A.) Oxidation

Explanation:

:p

Hydrogen reacts with oxygen, hydrogen loses electrons. The term

applies to what happens to hydrogen in this reaction is

A. Oxidation

Oxidation is a process where a substance: Loses one or more electrons or gains an oxygen atom or we can say that oxidation is a process which involves the addition of oxygen or any electronegative element or the removal of hydrogen or any electropositive element.

Reduction is the gain of electrons or reduction is a process which involves the addition of hydrogen or any electropositive element or the removal of oxygen or any electronegative element.

A synthesis reaction is a type of reaction in which multiple reactants combine to form a single product. Synthesis reactions release energy in the form of heat and light, so they are exothermic.  

correct option is A. Oxidation

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