Question at position 3

The table shows mass and weight data of some common items.




Based on the data, which conclusion is valid regarding the relationship between the force of gravity, mass, and weight?



The table shows mass and weight data of some common items.




Based on the data, which conclusion is valid regarding the relationship between the force of gravity, mass, and weight?



The weight of an object depends on the force of gravity of the planet, but the mass does not.



Neither the mass nor the weight of an object depends on the force of gravity.



The mass of an object depends on the force of gravity of the planet, but the weight does not.



Both the mass and the weight of an object depend on the force of gravity.

Work is done on the mouse by air resistance 25.574 Joule.

Work is done every time a force moves something over a displacement. you can calculate the electricity transferred, or paintings done, by using multiplying the force via the gap moved in the course of the force. strength transferred = work achieved = pressure x distance moved within the direction of the pressure.

Work to be accomplished, a force must be exerted and there must be motion or displacement in the route of the pressure. The work done by way of a force appearing on an object is the same as the significance of the pressure accelerated by way of the space moved within the route of the force.

given,

mass = 27.0 g = 0.027 kg

Height H = 200 m

initial speed u = 0 m/s

final speed V = 8.1 m/s

force = mg

        = 0.027 × 9.8

         = 0.2646 N

1/2mu² + mgh = mgh + 1/2mv²

0 + 0.027×9.8 ×100 = 0 + 1/2×0.027× (8.1)² + air reesistance

initial energy = 26.46 J

final energy = 0.886 J

air resistance = 26.46 J - 0.886 J

                        = 25.574 Joule

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Answer:

See below

Explanation:

Using conservation of momentum:

Initial momentum = (77+32 kg)* 3.8  m/s = 414.2   kg m/s

Jumping off with zero speed relative to ground (I think this is what zero horizontal speed MEANS) means all of his momentum is given to the cart  ( think about jumping off of a skateboard)

  final momentum of the cart

      mv = 414.2

       v = 414.2/32 = 12.94 m/s    for a + 9.13 m/s change

Answer:

Explanation:

Given:

S = 230 km

t = 2.3 h

_________

V - ?

Speed:

V = S / t

V = 230 / 2.3 = 100 km/h

According to the second law of Newton, the acceleration is directly proportional to the net force acting on the object:

From this formula, we can also see that the acceleration is inversely proportional to the mass: For the same force, if the mass increases, the acceleration decreases.

Therefore the correct option is d.

The answer is dy/dt is equal to -(20/7)(1/14)(0.6) = -0.12245 m/s.

The negative sign shows that the rate is falling as y gets shorter

.Woman Height/ Distance Light To Woman equals

Shadow Height/Distance Light To Wall.

explanation?

Think of a huge triangle with the origin as the spotlight, a base of 20, and the height of the shadow on the wall as y. Inside the larger triangle, a comparable triangle that is x meters from the spotlight and 2 meters

tall—the woman's height—can be seen.

Woman Height/ Distance Light To Woman equals

Shadow Height/Distance Light To Wall.

The shadow height is y. Let x be the distance from the woman to the light.

xy = 40 or y/20 = 2/x

Take both sides' derivative:

XDY + YDX = 0 based on the product rule.

Solve for the desired result, dy/dy:

dy/dt = -(y/x)dx/dt, where dx/dt = 0.6 m/s.

The woman is 20 - 6 meters from the light when she is 6 meters from the wall, which is 14 meters, or x.

Keep in mind that y/20 = 2/x = 2/14 --> y = 40/14 = 20/7 from the related triangles.

So, dy/dt is equal to -(20/7)(1/14)(0.6) = -0.12245 m/s.

The negative sign shows that the rate is falling as y gets shorter.

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The ball swings around the pole while maintaining its angular momentum because its angular velocity rises with decreasing radius and mechanical energy falls.

Think about the board at the top of the circle and the speed the bull is traveling at. We converse, and the velocity is the same when the board is at the base of the circle. According to Newton's Second Lawyer Motion, we are aware of this. the overall force applied to an item that is equal to the acceleration of a mustang underneath the object.

Therefore, a minimum velocity is necessary. Keep the board rotating in a circle. If not, the ball will drop to the ground. Therefore, the ground national wait that is acting on the circular's top board.

Additionally, for the minimal velocity, the centripetal force pressing on the kid must be equal to the gravitational weight acting under effort. Additionally, centripetal force can be expressed as fc = M. The bull is at the top of the circle with the lowest velocity, so according to Newton's Second Law of Motion, M. G. must be equal to him.

From the beginning, we debated in a minimum square. Find the least velocity at the circle's top using that expression. Therefore, by rearranging, we can cancel em from both sides of the minimal square G. R., making it equal. taking the highway. The group of G. R. will have the lowest velocity.

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When a single photon has an energy of 2.23*10-21, light has a frequency of *E=hv 2.23 10-21 J = (6.626... 3.03 10-19 J (6.022*1023 photons).

A photon is a tiny energy packet of electromagnetic radiation, also referred to as a light quantum.

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A. Total momentum in a closed system is conserved

the law of momentum conservation states that The total amount of momentum before the collision is the same as the total momentum after the collision. Regardless of the change of momentum of each object.

When electricity to an electromagnet is stopped the magnetic strength of the magnet will be lost.

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Answer:

Explanation:

We have to use the equation p = I^2 x R. But we do not have the current.

To work out the current, we look at what we have. We have the voltage and power, therefore we will use the equation P = IV and rearrange to find the current.

I = P/V

I = 60/220

I = 0.2727272727 or round it to 2 dp to get = 0.27

we now have to rearrange the first equation to find the resistance.

R = P/I^2

R = 60/0.2727272727^2

R = 806.6666665501

R = 807 ohms (3sig)

The resistance of the filament is 806.67 ohms.

Electrical power is defined as the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is Watt, 1 joule per second ( 1J/S).

The formula of electrical power is

    P = V^2/R

where,

P = power

V = volts

R = resistance

from the above formula

60 = 220x220/R

R = 220x220/60

R = 806.67

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When the distance between them is suddenly increased by a factor of 2. the new electrostatic force will be 2 N.

We need to know about electrostatic force to solve this problem. The electrostatic force is a force caused by two charges separated at a distance. It can be determined as

F = k . Q1 . Q2 / r²

where F is force, k is coulomb's constant (9 x 10⁹ Nm²/C²), Q is charge and r is radius.

From the question above, we know that

F1 = 8 N

r1 = r m

r2 = 2r1 = 2r

For this question, we can apply the ratio of initial and final force

F1 / F2 = k . Q . Q / r1² / k . Q . Q / r2²

F1 / F2 = r2² / r1²

F1 / F2 = (2r)² / r²

F1 / F2 = 4r² / r²

F1 / F2 = 4

F2 = 1/4 . 8

F2 = 2 N

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In order to determine the acceleration of the block, use the following formula:

Moreover, remind that for an object attached to a spring the magnitude of the force acting over a mass is given by:

Then, you have:

by solving for a, you obtain:

In this case, you have:

k: spring constant = 100N/m

m: mass of the block = 200g = 0.2kg

x: distance related to the equilibrium position = 14cm - 12cm = 2cm = 0.02m

Replace the previous values of the parameters into the expression for a:

Hence, the acceleration of the block is 10 m/s^2

Two forces 10N and 6N acts on an object in same direction , then the net force will be:

16N .

So here net force : F= F1 + F2.

Here,

F1 = 6 N

F2 = 10 N

F = 6N + 10N

F = 16N

∴ Net force = 16N .

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The coefficient of friction between the boy's shoes and the ice is 0.65.

The coefficient of static friction for ice is 0.65, so this means that 65% of the force needed to move an object from one place to another must be applied in order to get it moving across the ice at all—once it starts moving, however, there will be a lot less work required because we have already accounted for the initial force required to start moving it.

This means that if we want our boy running north at 5 meters per second across this large, flat lake with no wind or waves or anything else going on that might cause him trouble (or even help him), he'll need 10 meters per second or more just to get started.

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A model can be altered in a number of ways, by importing a database, combining information, or erasing data.

The term "scientific manipulation" in behavior analysis describes the methodical organization of a variable under research in order to enable the objective analysis of the effects of the variable presence or absence on some other measurable behavior.

To manipulate data, build a database with information from many sources, clean and rearrange the content of the database, combine and remove redundant information, and then do an analysis to uncover important information.

Understanding your needs and goals, utilizing automation tools, filtering your data, and researching various manipulation tools are some strategies for manipulating data.

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The force of friction impeding Matt's motion is 49.05 N.

What is friction?
When two surfaces move relative to each other, friction between them turns kinetic energy into thermal energy (that is, it converts work to heat). As demonstrated by the utilisation of friction caused by rubbing pieces of wood together to start a fire, this feature can have severe repercussions. When motion with friction occurs, such as when a viscous fluid is churned, kinetic energy is transformed to thermal energy. Another significant effect of many types of friction is wear, which can lead to performance degradation or component damage. The science of tribology includes friction.

The force of friction impeding Matt's motion down the banister can be calculated using the equation:
Ff = μN
where μ is the coefficient of sliding friction and
N is the normal force.
The normal force can be calculated using the equation:
N = mg sinθ
where m is the mass of the object, g is the acceleration due to gravity, and θ is the angle of incline.

Plugging in the known values, we get:

Ff = μN
Ff = (0.20)(50 kg)(9.81 m/s2)(sin 30.0°)
Ff = 49.05 N

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The acceleration of the object is 4.48m/s².

From the graph we can see,

There are 5 dots placed over the line, it means that the object has moved for 5 seconds. The distance which the object has covered in 5 seconds is equal to about 56 meters.

As we know, the object is starting from rest, so the initial velocity is 0m/s.

Now, to find the acceleration a of the object, we can use the equations of motion.

So,

Using,

S = ut + 1/2at²

Where,

u is initial velocity,

S is the distance covered,

and t is the time period of motions of the object.

Putting all the values,

56 = 1/2a(5)²

(56 x 2)/25 = a

a = 4.48m/s²

Hence, the acceleration is 4.48m/s².

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41.67 m² is the area of a solar collector that could collect 150 mj of energy in 1 h.

Power received per unit surface is the definition of intensity.

[tex]I=P/A=1kW/m2(1)[/tex]

Power is simply defined as the rate at which energy changes over time.

[tex]P=\Delta E/\Delta t(2)[/tex]

ΔE = 150 MJ

Δt = 1 hour = 3600 sec.

[tex]P=150 MJ/3600 s=41.67 kW(3)[/tex]

Replacing (3) in (1), and solving for Area, we get:

Area = 41.67 m²

The measurement that indicates the size of a region on a plane or curved surface is called area. Surface area refers to the area of an open surface or the border of a three-dimensional object, whereas the area of a plane region or plane area refers to the area of a form or planar lamina.

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Thus, the wavelength is 3.21 m when the frequency fm station broadcasts classical music is at  93.5 mHz.

A waveform signal's wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically expressed in metres (m), centimetres (cm), or millimetres (mm) (mm). It is more common to specify the wavelength in nanometers (nm), which are units of 10-9 m, or angstroms (), which are units of 10-10 m, for infrared (IR), visible light (VL), ultraviolet (UV), and gamma radiation ().

Frequency, or the quantity of wave cycles per second, is inversely related to wavelength. The wavelength of a signal decreases in length as its frequency increases. An electric field and a magnetic field vibrate together, producing an electromagnetic wave. A wavelength can be determined by dividing a wave's velocity by its frequency.

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This measurement demonstrates the conductivity of a certain material. When compared to rubber, which has poor electrical conductivity and high electrical resistance, metal, for instance, has high electrical conductivity and low electrical resistivity.

Electrical resistivity's physical opposite is electrical conductivity. This measurement demonstrates how well a certain material can conduct an electric current.

Rubber has a poor electrical conductivity and a high electrical resistivity, whereas metal has a high electrical conductivity and a low electrical resistance.

We are aware of the following thanks to the values that have been provided:

J = 6.00 10 13 A / m 2 and E = 100 V / m

The following equation provides the current density in terms of the electric field:

J = σ E

Here, E is the electric field, J is the current density, and is the electrical conductivity.

σ = J / E

The known values are then substituted.

σ = ( 6.00 × 10 − 13 A / m 2 ) / ( 100 V / m )

σ = ( 6.00 × 10 − 15 / m ) / ( 100 V )

The corresponding unit for V / A is.

Condense the units.

σ = 6.00 × 10 − 15 Ω − 1 m − 1.

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The radius of the planet is √2 times radius of earth or 1.414 times the radius of Earth.

According to Newton's law of universal gravitation, every object in the universe attracts each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

F = GmM/R²

where;

The acceleration due to gravity on surface of Earth is given as;

g = GM/R²

G = gR²/M

For a planet whose acceleration due to gravity is 4 times of Earth and mass is 8 times of earth, the radius of the planet is calculated as;

(4gR_p²)/(8M) = (gR²)/(M)

where;'

(4R_p²)/8 = R²

4R_p² = 8R²

R_p² = 8R²/4

R_p² = 2R²

R_p = √(2R²)

R_p = R√2

R_p = 1.414 (R)

Thus, the radius of the planet is root two times radius of earth or 1.414 times the radius of Earth.

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The complete box as per methods of extrasolar planet detection

Diameter of the

Mass of the planet

This is further explained below.

Generally, The techniques for finding planets beyond the solar system

Microlensing caused by gravitational forces occurs when a star that contains a planet moves in front of another star. This causes the light to bend in a peculiar manner.

The transit method takes into account the varying luminosities of the stars. When a planet passes in front of a star, the star's apparent brightness decreases, which provides information about the planet's radius or diameter.

The radial velocity method analyzes the Doppler shift of a star to determine whether the star is moving closer or farther away from us.

Method of astronomy that is based on variations in the positions of stars in the sky.

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Answer:

u got to provide all info in order to be answered

Explanation:

Answer:

Thus, even though the velocity of an object at rest must be zero, acceleration can clearly be non-zero for objects at rest. A particle that is thrown vertically upwards stops momentarily at the highest point of motion.

Answer:

Everything is zero. Because it's at rest.

It will takes years of time  to obtain a complete picture of the entire sky of angular area  is about 41,250 square degrees.

Divide 41250 by 0.0036 , we will get 11458333 and 1/3 image. but to take image for all of the sky it will takes years of time.

An angular distance used to describe how big a sphere or circle seems from a certain point of view is known as the angular diameter, angular size, apparent diameter, or apparent size. It is known as the visual angle in the vision sciences and as the angular aperture in optics (of a lens).

The angular diameter may also be thought of as the angle that a camera or eye must spin around in order to view from one side of an apparent circle to the other. Humans are able to distinguish sizes of up to around 1 arcminute (about 0.017° or 0.0003 radians) with their unaided eyes.

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Users in motion, wireless connectivity, and a cloud-based resource are the elements in a mobile system.

Smartphones, tablets, 2-in-1 PCs, smart speakers, smart watches, and smart eyewear all use mobile operating systems. Because they were originally developed for desktop computers, which historically did not have or require specific mobile capability, the operating systems that are used on "mobile" machines, like ordinary laptops, are often not referred to as mobile operating systems.

The distinction between mobile and other forms has become more hazy recently as a result of current hardware becoming more compact and portable than earlier equipment. This distinction is being muddled by the introduction of tablet computers and lightweight laptops, two major advancements.

Mobile operating systems combine desktop operating system elements with additional functionality that is useful for handheld or mobile use. For telephony and data connectivity, these systems typically have a wireless integrated modem and SIM tray.

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Users in motion, wireless connectivity, and a cloud-based resource are the elements of a mobile system which is the operating system used to run mobile devices like smartphones, tablets, etc.

A mobile system is a computing system with mobile entities. These can be hardware or software. The system runs on a mobile operating system such as android and iOS which are the two major mobile operating systems among others. A mobile operating system (OS) allows smartphones, tablet PCs, and other devices to run applications and programs.

Because mobile systems help in the real-time execution of several applications these must use wireless forms of connectivity and a cloud-based resource and storage system. Also, the fact that users can be in motion should be kept in mind and hence these are important elements in a mobile system

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The resultant velocity of the plane has a magnitude  104.4  mph and direction    south of west .

The plane is flying south at a speed of  100  mph and is blown by a  30mps strong wind due west.

⇒  The angle between the direction of flight of plane and the direction of the wind is  90° .

⇒  By Pythagoras theorem, the resultant speed is

[tex]\sqrt{100^{2} +30^{2} } =\sqrt{10900}[/tex] =104.4 mph

⇒  The resultant velocity of the plane has a magnitude  104.4  mph and direction    south of west

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A circuit is necessary for electricity to flow. The same materials can be used in multiple ways to create a complete circuit.

Diffraction is the interference or bending of waves via an aperture into the area that is geometrically in the shadow of the obstruction or aperture. Effectively, the wave's secondary source is the diffracting element or aperture. The term "diffraction" was created by Italian scientist Francesco Maria Grimaldi, who also made the first precise observations of the phenomena in 1660.

The Huygens-Fresnel principle, which views each point in a propagating wavefront as a collection of unique spherical wavelets, describes the diffraction phenomenon in classical physics. [3] As seen in the enclosed figure, the distinctive bending pattern is most obvious when a wave from a coherent source (like a laser) comes into contact with a slit or aperture that is roughly the same size as its wavelength.

A circuit is necessary for electricity to flow. The same materials can be used in multiple ways to create a complete circuit. Electric circuits of various types exhibit varying behavior (parallel and simple circuits) Light, heat, and music can all be produced with the use of electricity electrical conductors and insulators.

This results from the addition or interference of various wavefront points (or, alternatively, each wavelet) that follow pathways to the registering surface of varying lengths. Multiple, closely spaced apertures (like those in a diffraction grating) can produce a complicated pattern with different intensities.

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