______: occur when the moon, earth, and sun form a right angle, creating the lowest high and the highest low tides.

An update can be caused by changes to props or state. These methods are called in the following order when a component is being re-rendered.

what is the co ordinates of initial and terminal points?

.

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As the curved path is confined to the XY plane the component of magnitude.

Find the direction of the force on a proton ?

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A phenomenon is modeled using n dimensional variables with k primary dimensions, so the number of non-dimensional variables would be option c. n-k.

Measurements with quantitative data and distinct sizes are referred to as dimensional variables. Variables with dimensions and yet no constant value are called dimensional variables. Non-dimensional variables, on the other hand, are things that lack both dimensions and a variable value.

Quantities with dimensions but no constant value are called dimensional variables. Non-dimensional variables, on the other side, do not have the value of any variable or even the dimensions. Physical quantities with changing values but no dimensions are typically considered to be dimensionless variables.

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Due to the refraction of light when we look the coin embedded in a glass cube it appears to be closer at the top of the cube.

Refraction is the bending of a light ray when it goes from an optically rare medium to an optically denser medium. It is determined by the refractive index. Refractive index of a substance is the ratio the speed of light in a vacuum to the speed of light in the substance.

So refractive index 1.5 tells that the speed of light in the glass will be 1.5 times slower than the speed of light in vacuum. That's why it will gets bent towards the normal when it will pass through the glass. So the coin will appear closer to the top surface of the cube.

Hence the option C is correct.

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Answer:

speed of response and response time , lag , fidelity,and dynamic errors are the dynamic characteristics of instruments.

It depends on the data. If the data matches what is expected based on the known properties of absorbance and transmittance using a spectrophotometer, then the graphs will show the expected trends.

If the data does not match what is expected, then the graphs may not show the expected trends.

A diagram or pictorial representation that organises the depiction of data or values is known as a graph. The relationships between two or more items are frequently represented by the points on a graph.

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In the 0/1/2 knapsack problem, the objective is to select the set of things that maximises the overall value of the items while staying within the limits of the knapsack. Each item may be selected up to twice.

Similar to the 0/1 knapsack problem, the issue can be written as a linear programming problem and resolved using dynamic programming or the branch and bound approach. The 0/1/2 knapsack problem and the 0/1 knapsack problem are fundamentally different from one another because in the latter, each item may be selected up to twice, but in the former, each item may only be selected once. Accordingly, depending on the particular issue instance, the 0/1/2 knapsack problem is more adaptable and might result in different solutions than the 0/1 knapsack problem. Using a modified version of the conventional 0/1 knapsack method is a common strategy for solving the 0/1/2 knapsack issue.

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From insulating threads, two thin metal spheres are suspended close to one another. One sphere has a net charge while the other sphere has no net charge. The spheres will exert no net electrostatic force on each other. The correct option is A.

The uncharged balloon in an experiment advances toward the charged rod. The net charge from the charged sphere distributes onto both evenly, so they are each charged with same sign. The positive and negative charges neutralise, any residual charge is spread evenly. So, both spheres are charged with same sign. If there is no residual charge, both remain neutral.

Suppose the sphere is positively charged, the neutrally charged sphere becomes is negatively charged. The other sphere is polarised by the positively charged one, with a negative charge on the side that is nearest to the first sphere. Now the second sphere moves towards the first sphere.

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This car is undergoing negative acceleration, meaning that its velocity is decreasing as it moves to the left. The car's motion can be described as decelerating to the left.

Acceleration is the rate of change of velocity. It is the rate at which an object's velocity changes over time. It is a vector quantity, meaning it has both magnitude and direction. Acceleration can be caused by a number of forces, such as gravity, friction, and applied forces. In one dimension, acceleration is the change in velocity divided by the time it takes for the change to occur. In two dimensions, acceleration is the rate at which an object's velocity vector changes in magnitude and/or direction. Acceleration can be positive, negative, or zero. Positive acceleration occurs when an object speeds up, negative acceleration occurs when an object slows down, and zero acceleration occurs when an object's velocity remains constant.

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Answer:

0.5

Explanation:

The coefficient of static friction (μs) can be calculated using the formula:Friction Force = μs x Normal ForceWhere Normal force is the weight of the object = 86 NThe force required to move the box is 44 N, which is the Friction forceSo,44 N = μs x 86 NTherefore, the coefficient of static friction (μs) = 44 N / 86 N = 0.5The coefficient of static friction between the box and the surface is 0.5.

For elastic collision: conserve the total kinetic energy of the system and  conserve the total momenta of the system.

option B and C.

This is a type of collision in which the two objects move with a different velocities after the collision.

In elastic collision both momentum and kinetic energy is conserved unlike the inelastic collision where only momentum is conserved and the kinetic energy of the system is not conserved.

Thus, we can conclude that in an isolated system during elastic or inelastic collision the sum of the initial momentum of the system is equal to the sum of the final momentum of the system.

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Answer:

The correct answer is: B: The first 15 minutes is a curve that is concave downward, the middle portion is a straight line with slope 100 miles/hour, and the last portion is a concave upward curve.

Explanation:

The first 15 minutes of the journey, the train is accelerating from rest to reach a constant velocity of 100 miles/hour. The position vs time graph of this portion of the journey would be a curve that is concave downward, as the acceleration is positive and the velocity is increasing.

The middle portion of the journey, the train is moving at a constant velocity of 100 miles/hour. The position vs time graph of this portion of the journey would be a straight line with slope 100 miles/hour, as the velocity is constant.

The last 15 minutes of the journey, the train is slowing down to come to a stop. The position vs time graph of this portion of the journey would be a curve that is concave upward, as the acceleration is negative and the velocity is decreasing.

The spring constant can be calculated as: 12.51 N.

The formula for calculating the period of oscillation is written as the following:

[tex]T=2\pi \sqrt{\frac{m}{k} } \\[/tex]

m is the mass of the spring.

k is the spring constant.

Making the spring constant "k" the subject of the formula will give us the following expression;

[tex]k=4\pi ^{2} \frac{m}{T^{2} } \\[/tex]

Get the period of oscillation "T"

T= 1/f

frequency "f" can express the number of oscillations completed in one second.

If a student with a stopwatch finds that 12 oscillations take 15.0 s, the number of oscillations in one sec will be 9/14 = 0.64 osc.

Period T = 1/0.64 = 1.56sec

Get the required spring constant

[tex]K=4\pi ^{2} \frac{m}{T^{2} } \\k= 4(3.14)^{2}\frac{0.13}{0.64^{2} } \\[/tex]

K= 12.51 N

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The student can use a meterstick and stopwatch to measure the centripetal acceleration.

Acceleration of an object on a circular orbit. Velocity is a vector quantity (that is, it has both magnitude, velocity, and direction), so as an object moves along a circular path, its direction changes constantly, and so does its velocity, causing acceleration. increase. Centripetal acceleration is defined as the property of motion of a body through a circular orbit. An object that moves in a circle and has an acceleration vector pointing to the center of the circle is called centripetal acceleration. Spinning a ball on an overhead string causes it to experience centripetal acceleration.

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Answer:A: Acceleration

Explanation: I hope this helps!

The pressure at the beginning and the end of the pipe cannot be determined without additional information.

Velocity is a vector quantity that measures the rate of change of an object’s position in a given direction. It is the rate of displacement over time, or the speed at which an object is moving. Velocity is the speed of an object in a particular direction. It is measured in meters per second (m/s) or kilometers per hour (km/h). Velocity is a combination of both speed and direction, and it can also be represented by an arrow pointing in the direction of motion.

The pressure at the beginning of the pipe (P1) will be determined by the pressure of the source supplying the pipe, such as a pump, as well as the friction losses that occur along the pipe. The pressure at the end of the pipe (P2) will be determined by the available pressure of the source supplying the pipe, the friction losses that occur along the pipe, and the velocity at the end (v2). As such, without knowing the source pressure, the friction losses, and the velocities, it is impossible to determine whether P1 is less than, equal to, or greater than P2.

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Convergent boundaries occur when two plates move in the opposite direction until they collide and create mountains and volcanoes. In the image, the arrows direction is horizontal and oposite to each other.

Collision area between two plates. The collition might occur between,

When two oceanic plates collide, magma rises to the surface by crevices, creating volcanic arches. In these boundaries occur vertical movements and might originate from protruding areas. There is compressional stress between plates.

In the image, the arrows direction is horizontal and oposite to each other.

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It is not a proper scale to measure which intensifies 10 times over as it increases by value. The scale which have a short and regular intervals are more accurate.

There are various kinds of measuring gadgets which can be used in appropriate occasions. For example in a chemical lab, there are graduated beakers, measuring vessels, electronic balances, burettes, pipettes etc.

Each type of measuring vessels are used in different situations. In all cases, measuring devices with small regular interval of scale is very easy to use and helps for an accurate measurement especially in the case small volume samples.

Therefore, it is not a proper scale which intensifies 10 times over as it increase by a value. We can't take the intermediate values properly with this scale.

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The number of hydrogen atoms required to obtain 1.0 kg of hydrogen is 6.022 x 10^30.

1 kilogram is equal to 1000 grams and 1 atomic mass unit (u) is defined as one twelfth of the mass of a carbon-12 atom, which is 1.6605 x 10^-27 kg.

So, 1 u = 1.6605 x 10^-27 kg

Therefore, 1.0 kg of hydrogen is equal to 1.0 x 10^3 / 1.6605 x 10^-27 = 6.022 x 10^30 hydrogen atoms.

So, the number of hydrogen atoms required to obtain 1.0 kg of hydrogen is 6.022 x 10^30.

A conversion factor converts one unit to another by utilizing your knowledge of unit relationships. For example, if you know that there are 2.54 centimeters in an inch (or 2.2 pounds in a kilogram or 101.3 kilopascals in an atmosphere), converting between those units becomes simple algebra. It is critical to understand some common temperature, size, and pressure conversions, as well as metric prefixes.

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When the price is set at $20, the rate of change in sales volume is -0.086. The number of units sold will fall by 86.

Volume is defined as the space occupied by an item inside the confines of three-dimensional space. It is also known as the object's capacity. Volume is a measurement of an object's capacity. For example, the capacity of a cup is 100 ml if it can carry 100 ml of water up to the brim. Volume is also the amount of space filled by a three-dimensional object. Volume and mass are the two fundamental qualities of matter. Volume is simply the amount of space occupied by a thing. There are several methods for measuring volume depending on the physical condition of an item.

Here,

dy/dp = -174/5 [3p + 1]^-7/5

Substitute p = 20 in the above equation, we get

dy/dp = -0.086

(b) The sales volume will decrease by 86 units.

The rate of change in sales volume when the price is $20 is -0.086. The sales volume will decrease by 86 units.

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In order to expand future biopower production, states would need to acquire large quantities of biomass materials such as wood and agricultural crops like corn, switchgrass, and other grasses.

These materials are used in the production of biofuels, which is a type of renewable energy generated from organic matter. Biomass materials are typically converted into liquid fuels such as ethanol or biodiesel for use in vehicles, or burned for electricity generation. Additionally, states may need to acquire large quantities of organic waste materials like animal manure and food scraps for use in anaerobic digestion systems that generate biogas. Biogas is a type of renewable energy that can be used to produce electricity or heat.

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When an excited electron from a higher energy level returns to a lower energy level by releasing energy in the form of light, a bright-line spectrum of sodium is created.

In physics, energy is the quantitative quality that is imparted to a body or a physical system and is visible in the form of heat and light. The law of conservation of energy holds that energy can be transformed in form but cannot be generated or destroyed. Energy is defined by scientists as the ability to do tasks. People have learnt how to convert energy from one form to another and then utilize it to conduct labor, which makes modern civilization feasible. Energy is the ability to do tasks. It can take the form of a potential, kinetic, thermal, electrical, chemical, nuclear, or other energy.

Here,

The sodium bright-line spectrum is formed when an excited electron from a higher energy level returns to the lower energy level by releasing energy in the form of light, resulting in a sodium bright-light spectrum.

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Answer:

The direct comparison method of measurement is a method of comparison in which an unknown measurement is compared to a known measurement. This method is used to determine the size, weight, or volume of an unknown object by comparing it to an object whose size, weight, or volume is already known. For example, if you need to determine the weight of an object and have a known weight that is similar in size, you can compare the two objects and estimate the unknown weight. This method of measurement is often used in situations where a more precise measurement is not possible or practical.

Answer:

Displacement = √(4^2 + 4^2) = √(16 + 16) = √32 = 4√2 meters

Explanation:

To determine the magnitude of the cart's resultant displacement, we can use the Pythagorean theorem. The Pythagorean theorem states that the square of the length of the hypotenuse (the displacement) of a right triangle is equal to the sum of the squares of the lengths of the other two sides.

We can imagine the cart's displacement as the hypotenuse of a right triangle, where one side is 4 meters (the eastward displacement) and the other side is 4 meters (the northward displacement). Using the Pythagorean theorem, we can calculate the magnitude of the displacement as follows:

Displacement = √(4^2 + 4^2) = √(16 + 16) = √32 = 4√2 meters

So the magnitude of the cart's resultant displacement is 4√2 meters.

An object can encounter some resistance when moving through the fluid medium of air.

The drag force is the oppositional force applied by the air to a moving object. The size of the cross section A of the front face of the item, the density of the air, and the square of the object's velocity v all contribute to the drag force.

With motion exclusively in the vertical direction and letting

downward be positive, we have that

dv/dt = g - pv, where g = 32 ft/, and so

dv/dt + pv = g. The integrating factor is , so

d/dt( × v) = g× ----->

v = (g/p)× + C ----->

v(t) = (g/p) + C×

Now v(0) = (g/p) + C = 0, and so C = -g/p, giving us

v(t) = (g/p)×(1 - ).

Now we are given that lim(t->infinity)(v(t)) = 99 mi/h = 145.2 ft/s,

so since -> 0 as t -> infinity we have g/p = 145.2 ft/s ------>

p = 32 ft/s^2 / (145.2 ft/s) = 0.2204 s^-1 .

Next, since we have defined downward as positive, the expression

we have for v(t) will equal dy/dt where y(0) = 0 and y increases as

the paratrooper falls. So

dy/dt = v(t) = (g/p)×(1 - )), so

y(t) = (g/p)×(t + (1/p)×) + K.

Now y(0) = (g/p)×(0 + (1/p)) + K = 0 ----->

K = -(g/p^2) = 32 / 0.2204^2 = -658.76 ft, so

y(t) = (145.2)×(t + (4.5372)×e^(-0.2204×t)) - 658.76.

Next, y(6) =  (145.2)×(6 + (4.5372)×e^(-0.2204×6)) - 658.76 = 444.84 feet.

The computed drag coefficient is substantially higher than anticipated.

The free fall distance is the longest distance an individual can travel in a predetermined amount of time. However, the distance covered in the time frame indicated in the news report is significantly greater than the greatest distance that could be covered. Consequently, the news story is exaggerated.

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The weight of the cylinder in pounds is 26.45 lbs.

To determine the weight of the cylinder in pounds, we first need to calculate its volume. The volume of a cylinder is given by :

V = πr²h

where,

r = the radius

h = the height (or length) of the cylinder.

Given the radius and length, we can substitute these values into the formula to get:

V = π * (0.04 m)² * (0.11 m) = 0.001539 m³

Since the mass density of steel is 7850 kg/m3, we can multiply the volume by the mass density to find the mass of the cylinder:

mass = 7850 kg/m³ * 0.001539 m³

mass = 12 kg

To convert this mass to pounds, we can multiply it by 2.20462 (1kg = 2.20462 lbs)

12 kg * 2.20462 = 26.45 lbs

Hence, the weight of the cylinder in pounds is 26.45 lbs.

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Answer: Tim gains a potential energy of 3227.93 Joules.

Explanation:

Tim, with mass 76.6 kg, climbs a gymnasium rope a distance of 4.3 m. The acceleration of gravity is 9.8 m/s². How much potential energy does Tim gain?

Data:

m = 76.6 kg

h = 4.3 m

a = 9.8 m/s²

Ep = ?

To calculate potential energy, we have the formula

Where

Since it asks us to calculate Tim's potential energy, we should not do formula clearance.

Therefore, we substitute data in the formula and solve, then

Ep = 76.6 kg × 9.8 m/s² × 4.3 m

Ep = 3227.93 kg × m/s² × m

Ep 3227.93 N × m

Ep = 3227.93 Joules

Tim gains a potential energy of 3227.93 Joules.

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Answer:It will shoot back up

Explanation:It is not going to change from positive to negative because you pushed it! It will stay positive and repel away from the positive.

This is a physics problem involving Coulomb's Law, which states that the force between two point charges is given by the equation F = (k * q1 * q2) / r², where k is the Coulomb constant, q1 and q2 are the charges, and r is the distance between the charges.

To find the position of charge 3 to the right of charge 1, we need to find the value of x³,r such that the net force on charge 3 is zero. This is because if the net force on charge 3 is not zero, it will accelerate and move away from its current position.

Similarly, to find the position of charge 3 to the left of charge 1, we need to find the value of x3,l such that the net force on charge 3 is zero.

The exact value of x3,r and x3,l will depend on the values of q1, q3 and the distance from charge 3 to charge 1.

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