3. Which property of electromagnetie waves must go down as the frequency goes up?

A working-class clockmaker from Yorkshire named John Harrison developed a device that could tell the correct time at sea in order to overcome the longitude problem.

While it is reasonably simple to measure latitude accurately enough for seafaring, it is far more challenging to determine longitude precisely. The English Parliament had offered a cash prize of up to 20,000 pounds in 1714 for a workable solution to the length issue. The prize money was scaled based on how accurately the method was presented. John Harrison didn't start researching this subject until ten years after the prize money was published, but he would continue to do so right up until the end of his life. Astronomical navigation hasn't yielded any workable solutions up until now. The Board of Longitude was established to judge the proposals offered and handle prize administration.

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The downward velocity of the pendulum is 2.8 m/s

The downward velocity of the pendulum can be found using the formula:

v = √(2gh)

where v is the velocity, g is the gravitational field strength (9.8 N/kg), h is the height (40 cm), and √ is the square root.

Converting the height to meters and plugging in the values we get:

v = √(2 * 9.8 * 0.4) = √(7.84) = 2.8 m/s

Therefore, the downward velocity of the pendulum is 2.8 m/s.

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The magnitude of the acceleration of the car from the recorded the following data for the motion of a car undergoing constant acceleration is 2 m/s².

Acceleration is the term used to describe the rate of change in velocity.

Acceleration a = (V f - V₀)/ (t f - t₀)

where, V f is the final velocity

V₀ is the initial velocity

t f is the final time

t₀ is the initial time

Using the first two rows of the table in the attachment, we have,

a = (6 - 4)/(4 - 3) = 2/1 = 2 m/s²

Thus, the required magnitude of the acceleration of the car from the recorded the following data for the motion of a car undergoing constant acceleration is 2 m/s².

The given question is incomplete. The complete question is given in the attachment below.

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The light emanating from galaxies behind it is bent or distorted by it.

When a massive mass of matter, such as a group of galaxies, produces a gravitational field that bends and magnifies light from distant galaxies that are in front of it but in the same line of sight, the result can be a gravitational lens.

It has the same effect as gazing through a very large magnifying lens. Astronomers can gain more insight into the mass and dark matter content of the foreground galaxies thanks to the gravitational lensing theory. As implied by the name, dark matter is dark. Astronomers can only study it by seeing how its gravity affects things that are visible to us.

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The magnitude of Jupiter's gravitational field and the acceleration due to gravity experienced by the spacecraft is 25.3 m/s².

option B is the correct answer

The magnitude of Jupiter's gravitational field and the acceleration due to gravity experienced by the spacecraft is calculated as follows;

E = Gm / r²

g = Gm / r²

where;

The acceleration due to gravity experienced by the spacecraft is calculated as

g = ( 6.67 x 10⁻¹¹ x 1.898 x 10²⁷ ) / ( 8.5 x 10⁵ + 6.99 x 10⁷ )²

g = 25.29 m/s²

g ≈ 25.3 m/s²

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Their speed will be  half the initial speed of car A.

The speed of an item, which is a scalar quantity, is the size of the change in its location over time or the size of the change in its position per unit of time.

Any situation in which two or more objects exert forces on one another quickly is referred to as a collision. The scientific definition of the word "collision" makes no reference to the magnitude of the force involved, despite the fact that the most frequent usage of the word relates to instances in which two or more objects clash violently.

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If Lee pushes horizontally with a force of 78N on a 29kg mass for 16m across a floor. The amount of work Lee did is: 1,248J.

Given data:

Mass of the object , m = 29kg

Force, F = 78N

Displacement, d = 16m

Now let find the amount of work using this formula

Work = F × dcosθ

Let plug in the formula

Work = 78 × 16cosθ

Work = 1,248J

Therefore we can conclude that the work done is 1,248J.

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The restoring force of a spring is 19.25 Newtons

To get the restoring force, we can make use of the formula that is as follows:

F = -k x

When F represents the restoring force, x represents the displacement from equilibrium caused by the deformation, and k represents the constant that is connected to how difficult it is to distort the system, the expression reads as follows. While the minus sign denotes that the restoring force acts in the opposite direction to the displacement, the displacement itself remains constant. Using the formula, we get the following: 55 Newtons per meter multiplied by 0.35 meters.

Therefore, 19.25 Newtons would constitute the restoring force.

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B. FAB = -FBA .

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Answer:

200ml

Explanation:

To determine the final volume of the gas, you can use the ideal gas law, which states that PV = nRT, where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature in kelvins.

If you know the initial pressure and volume of the gas, and you raise the pressure to a new value, you can use the ideal gas law to determine the new volume.

For example, if the initial pressure of the gas is 20.5 kPa, the initial volume is 400 mL, the number of moles of the gas is n, the temperature is T, and the pressure is raised to 80.5 kPa, you can solve for the final volume as follows:

P1V1 = nRT

P2V2 = nRT

V2 = (P1V1)/P2

V2 = (20.5 kPa * 400 mL)/80.5 kPa

V2 = 200 mL

So, the final volume of the gas is 200 mL.

It's important to note that this calculation assumes that the temperature and the number of moles of the gas remain constant. If either of these variables changes, the final volume of the gas will also be different.

The final velocity of the object after the collision is  -12 kg*m/s. This is an inelastic collision because some kinetic energy is lost during the collision.

An inelastic collision occurs when there is a loss of kinetic energy. While the system's momentum is conserved in an inelastic collision, kinetic energy is not. This is due to the transfer of some kinetic energy to something else.

The total momentum before the collision is (4.0 kg)(10m/s) + (1.0 kg)(5.0 m/s) = 45 kg*m/s.

The total momentum after the collision is (1.0 kg)(v) + (4.0 kg)(8.0 m/s) = 0

where v is the speed of the 1.0 kg object after the collision.

Solving for v, we find that v = -12 kg*m/s                                          

Therefore, the speed of the 1.0 kg object after the collision is  -12 kg*m/s .

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Based on the information provided, the lighter object is further away from the fulcrum than the heavier object.

In physics and mechanics, torque refers to the rotational equivalent of linear force and also referred to as the moment of force. It represents the capability of a force to produce change in the rotational motion of the body. The moment of inertia of a rigid body refers to a quantity that determines the torque needed for a desired angular acceleration about a rotational axis. Hence, based on these concepts, on a seesaw, the torque of each child about the pivot point is the product of the child's weight and the distance of the child from the pivot or fulcrum. In an experiment, in order to produce equal torque on either side of the fulcrum, lighter object is further away from the fulcrum than the heavier object.

Note: The question is incomplete. The complete question probably is: Gizmo shows a see-saw, which is a type of lever. The mass of object A is 1.0 kg and the mass of object B is 2.0 kg. Experiment with the Gizmo shows how you can balance a heavy object with a light object. What is said about the distances of each object from the fulcrum.

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Atmospheric perspective the effect is produced by diffusion of light in the аtmosphere whereby more distаnt objects hаve less clаrity of outline аnd аre lighter in tone.

Atmospheric perspective is mаking objects thаt аre further аwаy less detаiled. Аtmospheric perspective cаn be regаrded аs the effect of the аtmosphere on the аppeаrаnce of objects when it is been viewed by аn observer from а distаnce.

It cаn be seen аs аn effect аs а result of diffusion of light in the аtmosphere, in this cаse object thаt аre аt distаnce do hаve less clаrity of outline аs well аs lighter in tone.

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The force Jane push on Mary is 10N. And the acceleration of mary is 1.82m/s² and acceleration for Jane is 2.86m/s²

Newton third law of motion states that If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. It can also be defined as , action and reaction are equal but opposite in direction.

For example if a man of weight 100N sits on a bench, the force the bench will have on the man is also 100N.

Similarly, if Mary pushes Jane with a force 10N, therefore Jane will also push Mary with a force 10N in the opposite direction.

From F = ma

the acceleration of mary = F/m

= 10/5.5 = 1.82m/s²

the acceleration of Jane =F/m

= 10/3.5 = 2.86m/s²

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The block there at bottom is moving at a speed of 5.40 m/s. if the plane is 2.0 meters in height. Friction produces work at a rate of 30.24 J.

The friction of a moving item is inversely proportional to the usual force and runs perpendicular to it. The type of surface the thing comes into touch with determines the amount of friction it experiences. Area of contact has no bearing on friction.

The kind of the contacting surface affects the frictional force. The amount of friction increases with surface roughness. The pushing force, or weight of the body, is proportionate to the frictional force. It is unaffected by the contact area.

gravitational energy mgh ,

= 6•9.81•2 = 117.72 J.

kinetic energy = 0.5mv2

= 0.5•6•(5.40)2

= 87.48 J.

Work done = 117.72 - 87.48

=30.24 J.

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Let x, y, z, and w be the number of units of products i, ii, iii, and iv, respectively, produced each week.

Maximize 360x + 240y + 360z + 480w

Subject to:

x + y + z = 150 (contractual obligation)

w ≤ 25 (maximum of 25 units of product iv)

x ≤ 480 (available machining time)

y ≤ 400 (available polishing time)

z ≤ 400 (available assembling time)

x, y, z, w ≥ 0 (non-negativity)

The optimal solution is x = 150, y = 0, z = 0, and w = 25, which yields a maximum profit of 90,000 birr.

Part A) 21 The current falls whenever two transistors are linked in series because the overall resistance rises. However, if you link them in parallel, total resistance is reduced, which causes current to increase. Therefore, choice 1 is correct. In a series circuit, the current is continuous.

Part B) The right answer is that when two resistors are linked in series, less total current flows through the circuit than when they are connected in parallel.

What a resistor is. a passive electrical device that has two terminals and is employed in electrical circuits to limit or regulate the flow of current. A resistor's primary function is to lower the voltage and reduce current flow in a specific area of the circuit.

The amount of current flowing through the circuit is affected by any changes in a resistance value. The following are some circuit functions where resistors are used: the musical tone's pitch, and.

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"electric" originates from the Greek word "elektron," which meaning "to be like amber" or "to be able to draw other things."

Proton attraction keeps electrons in their orbits, but some external factors can cause electrons in the outer band to break off of their orbit. These are referred to as free electrons, and electron flows are created when they move from one atom to the next. The foundation of electricity is these. There are two types of electricity: Static electricity: When an object's positive and negative charges are not balanced, an electrical pulse known as static electricity is discharged. The movement of electrons from one area of the circuit to another is known as current electricity.

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The process by which plastic deformation is produced by dislocation motion is called slip deformation.

When applied stress exceeds the elastic limit or yield stress, the deformation of the material body occurs. This is due to the result of a slip or dislocation mechanism at the atomic level. Plastic deformation in a metal has two prominent mechanisms, and they are. When we apply a shear stress on an object in a particular direction to change its shape or anything that we cam do. the shear stress generate a strain on the object and changes its shape to the extent that we can do by the force. the shape is changed to the extent by the force applied on the part of it and we can take a look into it. A prominent mechanism of deformation in metal is slip. By this particular information we can firmly conclude that the process by which plastic deformation is produced by dislocation motion is called slip deformation.  

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Impulse is equal to the change in momentum of an object. The momentum of an object is equal to its mass times its velocity.

The initial momentum of the dog is 80kg * 2m/s = 160kg*m/s.

The final momentum of the dog is 80kg * 3m/s = 240kg*m/s.

The change in momentum of the dog is 240kgm/s - 160kgm/s = 80kg*m/s.

Therefore, the impulse on the dog is 80kg*m/s.

Trough is a linear zone of lower pressure between two areas of high pressure.

An extended area of moderately low atmospheric pressure known as a trough lacks a closed isobaric contour that would classify it as a low pressure area. Troughs and ridges refer to features in the same sense as those on a topographic map since low pressure suggests a low height on a pressure surface.

Troughs could be overhead or close to the ground. A weather front that is accompanied by clouds, showers, and a change in wind direction is occasionally marked by near-surface troughs. The jet stream's upper-level troughs (as depicted in the diagram) are caused by cyclonic filaments of vorticity. Their movement causes upper-level wind divergence, which helps to produce overcast and rainy weather there by elevating and chilling the air ahead of (downstream) the trough.

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You should anticipate a rise in barometric pressure once the core of a mature wave cyclone has passed.

After the core of a mature wave cyclone has passed, what will happen to the barometric pressure? The atmospheric pressure will increase.

With the passage of a cold front, a dramatic change in wind direction is frequently seen. In the warmer air mass ahead of the front, winds are often out of the south-southwest before the front arrives, but as it arrives, winds typically change to the west-northwest (in the colder air mass).

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The luminosity of a star is a measure of the total energy radiated by the star in one second.

The radiant power that is emitted by a light-emitting device over the course of time is referred to as luminosity. Luminosity is an absolute measure of radiated electromagnetic power. The total quantity of electromagnetic radiation that a star, galaxy, or other celestial object emits in a given amount of time is referred to as its luminosity in the field of astronomy.

Luminosity is expressed in SI units as joules per second, which is also written as watts. The absolute bolometric magnitude of an object is a logarithmic measure of its total energy emission rate, and the absolute magnitude of an object is a logarithmic measure of the luminosity within some specific wavelength range or filter band.

Luminosity can also be given in terms of the astronomical magnitude system.

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the answer is definitely 25. no cap

Explanation:

facts

Moving a magnet against stronger magnetic force transfers more energy to magnetic field : true .

Moving an object against stronger magnetic force transfers more energy to the magnetic field and magnetic forces are stronger closer to the magnets. The potential energy of the system is increased because, now it has an extra force to expel the magnet.

If a magnet is moved against the magnetic force of a stronger magnet, then the motion will make the magnetic field lines to be compressed and this would cause an increase in potential energy as the magnetic force lines will now be compressed.

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The velocities of the two bodies are 4.4m/s.

M₁ = 2.5 kg

M₂ = 4.0 kg

V₁ =  7.0 m/s

V₂ = ?

To calculate the momentum before collision P₁:

P₁ = M₁ * V₁

P₁ = 2.5 kg *  7.0 m/s

P₁ = 17.5 kg m/s

The  momentum before collision P₁ = 17.5

To calculate the momentum after  collision P₂:

P₂ = M₂ * V₂

P₂ = 4.0 kg  * V₂

momentum before collision P₁ = the momentum after  collision P₂

                          17.5 kg m/s  = 4.0 kg  * V₂

Making  V₂ subject of the formula we have:

V₂ = 17.5 kg m/s  

              4.0 kg

V₂ = 4.375

V₂ ≈ 4.4m/s

Hence the velocities of the two bodies is 4.4m/s.

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It is moving under the action of gravity such that a g. Using the equation of kinematics as:

v² - u² = 2gs

v = √2gs

v = √2 × 9.8 x 4.9

v = 9.8 m/s

Velocity, quantity that designates how fast and in what direction a point is moving. A point always moves in a direction that is tangent to its path; for a circular path, for example, its direction at any instant is perpendicular to a line from the point to the centre of the circle (a radius). The magnitude of the velocity (i.e., the speed) is the time rate at which the point is moving along its path.

If a point moves a certain distance along its path in a given time interval, its average speed during the interval is equal to the distance moved divided by the time taken. A train that travels 100 km in 2 hours, for example, has an average speed of 50 km per hour.

During the two-hour interval, the speed of the train in the previous example may have varied considerably around the average. The speed of a point at any instant may be approximated by finding the average speed for a short time interval including the instant in question. The differential calculus, which was invented by Isaac Newton for this specific purpose, provides means for determining exact values of the instantaneous velocity.

Because it has direction as well as magnitude, velocity is known as a vector quantity and cannot be specified completely by a number, as can be done with time or length, which are scalar quantities. Like all vectors, velocity is represented graphically by a directed line segment (arrow) the length of which is proportional to its magnitude.

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Answer:

false. its called conflict

A 12 kg book is pushed from rest to final velocity of 10 m/s, the book was pushed with a force of 99.96 N.

In physics, force is an influence that changes the motion of object. A force can cause an object with to change its velocity.

Given, Mass (m) = 12Kg

Initial velocity (U) = 0

Final Velocity (V) = 10 m/s

Distance travelled (s) = 6m

Using formula;

V² = U² + 2as

10² = 0 + 2 x a x 6

100 = 12a

a = 8.33 m/s²

As we know, F = m x a

F = 12 x 8.33

F = 99.96 N

The book was pushed with a force of 99.96 N.

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Saltation refers to the "bouncing" mode of sand transport in a windstorm or stream. Hence, the option A. Saltation is correct.

Sand can be moved by currents that are driven by gravity, wind, waves, tides, and density (current-related transport), by waves that oscillate as a result of short waves being bent under the impact of depth-decreasing water (wave asymmetry), or by a combination of currents and waves.

Because larger particles are too heavy for the wind to suspend, particles are sand-sized. The wind picks up speed as it climbs and crosses the obstruction. By saltation, it moves the sand grains up the dune's slightly sloping upwind side. The wind's velocity drops as it crosses the dunes.

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