Newton's Law of Gravity states that if the mass of one object doubles, the gravitational pull on a second object will
____.
doubles
decreases by half of half
quadruples
decreases by half​

The speed of the bottle when recoiling if it could move freely is 0.092 m/s.

The problem isn't complete. A similar problem is in the attachment. When we free the cork from the bottle, the cork and the bottle have a collision. According to the law of conservation of momentum, the momentum before and after the collision is the same.

p = p'

m₁ v₁ + m₂ v₂ = m₁ v₁' + m₂ v₂'

m₁ v₁ + m₂ v₂ = m₁ v₁' + m₂ v₂'

(0.0075 × 22) + (1.8 × 0) = (0.0075 × 0) + (1.8 × v₂')

0.165 + 0 = 0 + 1.8v₂'

1.8v₂' = 0.165

v₂' = 0.165 ÷ 1.8

v₂' = 0.092 m/s

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Consider a particle moving to the left with some speed v. If we take leftward to be the negative direction, then the particle's velocity is -v, and it's moving in the negative direction.

Now give the particle a positive acceleration pointing rightward. The particle will eventually slow to a stop before increasing its speed in the positive direction.

So the answer is yes, the direction in which a body is moving can be reversed with constant acceleration.

The minimum speed an arrow must have to pass through the wheel without hitting any spokes is 1440 cm/s.

To shoot the arrow through the wheel without hitting any of the spokes, we need to determine the time available between the spokes and the required minimum speed of the arrow.

Calculate the angular speed of the wheel.
Angular speed (ω) = 2π × revolutions per second
ω = 2π × 3.0 rev/s = 6π rad/s

Calculate the time between spokes.
Since there are 8 spokes, each spoke takes up 1/8 of the total time to complete a full revolution.
Time between spokes (t) = 1/8 × time for one revolution
t = 1/8 × (1/3.0 s) = 1/24 s

Calculate the distance between spokes.
The arrow needs to travel through the distance between spokes in the given time. The distance is equal to the diameter of the circle created by the spinning spokes, which is twice the radius.
Distance between spokes (d) = 2 × radius
d = 2 × 30 cm = 60 cm

Calculate the minimum speed of the arrow.
The arrow needs to cover the distance between spokes within the time available.
Minimum speed (v) = distance / time
v = 60 cm / (1/24 s) = 60 cm × 24/1 s = 1440 cm/s

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Answer:

The value of the resistance is 3.99 kΩ

Explanation:

The value of the resistance, given that a heart pacemaker fires 89 times a minute, and each time a 36.0-nf capacitor is charged to 0.632 of its full voltage, is 3.99 kΩ.

How to determine the value of the resistance?

We know that a pacemaker fires 89 times per minute, charging a 36.0-nf capacitor each time, and the capacitor is charged to 0.632 of its full voltage.

The formula for determining the time constant is: τ = RC and the formula for determining the voltage of a capacitor as it charges is: Vc = Vmax(1 - e^(-t/τ)) Using the following information, we can compute the value of the time constant:

τ = RCτ = (0.632Vmax * C) / IV max = 9 V The value of the time constant is τ = RC = (0.632Vmax * C) / I = (0.632 * 9 * 10^-3) / I = 5.67 * 10^-3 / I To find the value of the resistance, R, we'll use the frequency of the pacemaker (f = 89/60 Hz), which is the number of times it fires per second.

RC = 1/fRC = (5.67 × 10^-3)/IR = RCfR = [(5.67 × 10^-3)/I](89/60)R = 3.99 kΩ

Therefore, the value of the resistance, given that a heart pacemaker fires 89 times a minute, and each time a 36.0-nf capacitor is charged to 0.632 of its full voltage, is 3.99 kΩ.

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All the given statements are true. When the exposure button is pressed, the high-voltage circuit is turned on, the electrons are driven to the target by the kilovolts, and they collide with the target to produce the x-ray.

Electromagnetic waves are a category of radiation that includes X-rays. Using X-ray imaging, your body's interior can be visualized. The photos depict the various bodily parts in various shades of black and white. Because calcium in bones absorbs the most x-rays, bones appear white. Fat and other soft tissues have a greyish appearance and absorb less. Lungs seem black because air absorbs the least. The wavelength of X-rays is between 0.01 and 10 nm. They have a wavelength that is longer than gamma rays and shorter than UV rays and are ionising rays.

A negatively charged subatomic particle known as an electron can either be free or attached to an atom. The nucleus of an atom is made up of electrons, protons, and neutrons together.

Hence, all the given statements are true. When the exposure button is pressed, the high-voltage circuit is turned on, the electrons are driven to the target by the kilovolts, and they collide with the target to produce the x-ray.

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Each constituent of the Milankovitch cycles as pertaining to orbital eccentricity, axial tilt, or axial precession are classified accordingly.

The constituents of the Milankovitch cycles as pertaining to orbital eccentricity are:

The constituents of the Milankovitch cycles as pertaining to axial tilt are:

The constituents of the Milankovitch cycles as pertaining to axial precession are:

Therefore, each constituent of the Milankovitch cycles as pertaining to orbital eccentricity, axial tilt, or axial precession are classified accordingly.

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The focal length of the lens is 38.46 cm and the power of the lens is 2.6D.

Other names for hypermetropia include presbyopia, long-sight, and far-sight. The eye complaint known as presbyopia is characterized by the conformation of an image of a close object behind the retina rather than fastening on the retina in this case, the light is concentrated behind the retina.

By balancing out your cornea's dropped curve or your eye's lower size( length), traditional lenses can remedy vision. Traditional lenses are generally used in eyeglasses. This is a quick, secure system to correct vision and ameliorate sight.

The focal length of a convex lens is given by the formula

1/ f = 1/ v 1/ u

f is the focal length

u is the object distance from the lens

v is the image distance from the lens

According to the question,

u = -1/25 cm

v=-1/75 cm

1/f = -1/75-(-1/25)

    = -1/75 + 1/25

    = 38.46 cm

The focal length of the lens is 38.46 cm

The power of the lens is 100/38.46 = 2.6 D

He requires a lens of focal length 38.46 cm and power 2.6 D to enable him to read the newspaper which is kept at a distance of 25 cm.

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Answer:

20.4 cm; 2.4 cm  

Explanation:

The formula for the pressure p exerted by a column of a liquid with density ρ and height h is

p = ρgh

where h = the acceleration due to gravity

If you have two liquids balancing each other in a U-tube

     p₁ = p₂

ρ₁gh₁ = ρ₂gh₂

 ρ₁h₁ = ρ₂h₂

Data:

ρ₁ = 1010 kg/m³; h₁ = 18 cm

ρ₂ = 890 kg/m³; h₂ = ?          

1. Height of oil column

We measure from the horizontal red line.

\(\begin{array}{rcl}\rho_{1}h_{1} & = &\rho_{2}h_{2}\\\text{1010 kg/m}^{3} \times \text{18 cm} & = & \text{890 kg/m}^{3} \times h_{2}\\\text{18 180 cm} & = & 890h_{2}\\h_{2} & = & \dfrac{\text{18180 cm}}{890}\\\\ & = & \text{20.4 cm}\\\end{array}\\ \text{The height of the oil column is $\textbf{20.4 cm}$}\)

2. Height of oil above water

h₂ - h₁ = 20.4 cm – 18 cm = 2.4 cm

The magnitude of the net force on the punching bag is 1714N

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Answer:

Pemain A

Explanation:

Mengingat data berikut;

Kecepatan pemain A = 12 m/s

Kecepatan pemain B = 36 km/h

Untuk menentukan siapa pelari tercepat di antara dua pemain;

Pertama-tama, kita harus mengubah kecepatan menjadi satuan standar pengukuran yang sama.

Jadi, mari kita gunakan pengukuran umum meter per detik.

Konversi:

36 km/h = (36 * 1000)/(60 * 60)

36 km/h = 36000/3600

36 km/h = 10 m/s

Kecepatan pemain B = 10 m/s

Oleh karena itu, dibandingkan dengan kecepatan pemain A; pemain A lebih cepat.

The maximum height of the particle is 100feet

Applying linear motion equations,

v^2 = u^2 - 2as

v = final velocity

u = initial velocity

g = acceleration due to gravity

s = height travelled

At max height,

velocity = 0 i.e. V=0,  initial velocity u = 16ft/sec

g = 32ft/\(sec^{2}\)

so we have

0 = \(u^{2}\) -2gs

S = \(u^{2}\)/2g

= 16*16/2*32

= 4 feet

So maximum height = initial height + height travelled

= 96 + 4 = 100 feet

The range is u2sin2g and the needed value of the maximum height is u2sin2g. Not to be confused with flying time is the maximum height attained.

Maximum Height refers to a structure or sign’s highest point as measured from the average natural ground level at the base of the supporting structure.

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Answer:

100 feet

Explanation:

The car must start at a height of approximately 127.55 meters on the hill in order to achieve a speed of 50 m/s at the bottom, assuming it is engineless and resistance-free.

To determine the height on a hill at which an engineless, resistance-free car must start in order to achieve a speed of 50 m/s at the bottom, we can use the principle of conservation of mechanical energy.

According to this principle, the sum of the potential energy and the kinetic energy of an object remains constant in the absence of external forces.

At the top of the hill:

The car has only potential energy (PE) due to its height above the bottom.

At the bottom of the hill:

The car has both potential energy and kinetic energy (KE).

Since the car is engineless and resistance-free, we can neglect any energy losses due to friction or air resistance.

The total mechanical energy (E) at the top of the hill is equal to the total mechanical energy at the bottom of the hill:

Etop = Ebottom

The potential energy (PE) at the top of the hill is given by the formula:

PE = m * g * h

Where m is the mass of the car, g is the acceleration due to gravity, and h is the height of the hill.

The kinetic energy (KE) at the bottom of the hill is given by the formula: KE = (1/2) * m * \(v^{2}\),

Where v is the speed of the car at the bottom.

Therefore, we have:

PEtop = KEbottom

m * g * h = (1/2) * m * \(v^{2}\)

We can cancel out the mass (m) from both sides of the equation:

g * h = (1/2) * \(v^{2}\)

Now, we can solve for the height (h):

h = (1/2) * \(v^{2}\) / g

Substituting the given values:

v = 50 m/s (speed at the bottom)

g = 9.8 m/\(s^{2}\) (acceleration due to gravity)

h = (1/2) * \((50 m/s)^2\) / (9.8 m/\(s^{2}\))

h = 127.55 m

Therefore, the car must start at a height of approximately 127.55 meters on the hill in order to achieve a speed of 50 m/s at the bottom, assuming it is engineless and resistance-free.

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13 N/kg The surface gravitational field is given by acceleration due to gravity on the planet (g). Let the value of it on a newly discovered planet be g'.

The gravitational force acting on a mass of one kilogram is measured in newtons. G is assumed to be 9.806 N kg-1 at the surface of the Earth. Additionally, the acceleration of an item falling freely in the gravitational field of the Earth is denoted by the letter "g".

Through the development of his theory of relativity, Albert Einstein demonstrated that gravity is a curvature in the space-time continuum rather than merely a force. Simply explained, an object's mass causes the space around it to essentially bend and curve. That may sound like it belongs in science fiction, but it's true.

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Answer:

the workenergy principle is measured in joules

Dalton's law of partial pressures states that the total pressure of a gas mixture is the sum of the pressures each gas would exert if it occupied the container alone.

According to the kinetic theory, gases consist of numerous particles, such as atoms or molecules, that are in constant random motion.

These particles collide with each other and with the walls of the container, resulting in pressure exerted by the gas.

When multiple gases are present in a container, each gas behaves independently of the others due to the large spaces between gas particles and the negligible intermolecular forces.

The particles of one gas do not significantly influence the behaviour of particles from another gas.

The total pressure exerted by a mixture of gases is simply the sum of the individual pressures each gas would exert if it were alone in the container.

The kinetic theory of gases helps explain this behaviour by emphasizing the independent nature of gas particles.

Allowing us to understand why the pressures of individual gases can be added together to determine the total pressure in a mixture.

Therefore, Dalton's law of partial pressures aligns with the kinetic theory of gases and provides a convincing explanation for the behaviour of gases in a mixture.

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Answer:hushing

Explanation:

Dfgvcryh

Answer: Gas

Explanation:

the particles in a gas aren’t close together and they move freely. Like the air. can I have Brainliest plz.

The technique of contrasting and abrupt changes in levels of loudness is known as terraced dynamics. This technique involves a sudden shift from one dynamic level to another, without gradual transitions in between.

It is characterized by distinct and noticeable changes in volume, creating a dramatic effect in music or performance.

Terraced dynamics are commonly associated with baroque music, where sections of a composition are marked by sudden shifts between loud and soft passages.

This technique adds a sense of intensity, tension, and emotional impact to the music, creating a dynamic and engaging listening experience for the audience.

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Terrace dynamics is the technique of contrasting and abrupt changes in levels of loudness in music.

The technique of contrasting and abrupt changes in levels of loudness is known as terrace dynamics. Terrace dynamics is often used in music to create dramatic effects and add intensity to a piece. For example, in classical music, composers may use terrace dynamics to transition from a soft and gentle passage to a loud and powerful section.

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The kinetic energy of the object will have decreased if the net work done by the forces: Zero.

Kinetic energy is the strength an item has due to its motion. If we want to accelerate an item, then we have to practice a force. applying pressure calls for us to do paintings. After paintings have been finished, power has been transferred to the item, and the object may be shifting at a new constant pace.

Solution:-

a) Arm wore energy theorem,

WwW = AE

Sy if AKEDO, WO

Now, the correct option is: achn4 on the project is positive

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Answer:

it can be stored using

I hope it helps

Answer:

1530.4?

Explanation:

1500.0

+030.4

1530.4

Answer: "Surface tension is a film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimize surface area."

Hope this helps!

Answer:

Explanation:

Surface tension is the property of a liquid surface. It is an effect where the surface of the liquid is strong.

example - small insects can walk on water as they do not have enough weight to penetrate it.

This image might help you

Hope it helps

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Answer:

1Mm

Explanation:

i think this one. so it is wrong then also dont be angry with me because iam trying to help u

When wind turns the blades of a wind turbine and then this energy is used to power homes, this is an example of an energy transfer from mechanical to electrical energy.

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According to FCC regulations, antenna conductors for amateur transmitting stations that are attached to buildings must be firmly mounted at least 6 inches clear of the surface of the building on nonabsorbent insulating supports. This is to ensure that the antenna is safely and securely installed, and to prevent any potential interference with the building's structure or other nearby objects.

By using insulating supports, the antenna can be effectively isolated from the building's electrical system and grounded to prevent any unwanted electrical currents or interference. This is especially important for amateur transmitting stations, which can potentially cause interference with other radio services if not installed properly.

Overall, it is crucial to follow these regulations and guidelines when installing an amateur transmitting station antenna to ensure safe and effective operation. By doing so, you can avoid any potential issues and enjoy clear, reliable communication with other amateur radio operators.

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From the calculations, we can be able to obtain the net torque that is acting on the ball as 2.23 Nm.

We must have to recall that the term torque must have to refers to the kind of force that is able to cause a rotation. Thus the torque is a rotating force. It has to do with a force that acts on an object that has an axis of rotation.

We have to first find out the torque that is on each of the cases before e can now use the result to find the net torque. We must state at this point that the net torque can be found vectorially.

Downward torque = Force * distance

= 11 N * 0.07 m = 0.77 Nm

Upward torque = 15 N * 0.14 m

= 2.1 Nm

Net torque = √(0.77)^2 + (2.1)^2

= 2.23 Nm

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The coefficient of kinetic friction between the surfaces is 0.48.

Friction is simply defined as the force that prevents a sliding object from moving. Kinetic friction is a natural phenomenon that disrupts the motion of two or more objects. The force acts in the opposite direction of the motion of the object.

When we stop a car, we use brakes, which is where friction comes into play. When walking, friction is to thank once more. But when we have to stop in the middle of a puddle, things become more difficult because friction is less and cannot help as much.

Solve for a using K3:    \($v^2=v_0^2+2 a d$\\\)

\(& 19^2=0_0^2+2 a 38 \\& a_x=-4.75 \mathrm{~m} / \mathrm{s}^2\)

\(\begin{aligned}& \text F_{\text {net }}=-f_k=m a_x, \text { and } \\& -f_k=\mu_k F_n=\mu_k m g, \text { so we can say } \\& -m a_x=\mu_k \cdot m g \\& \mu_k=\frac{m a_x}{m g}=\frac{-a_x}{g} \\& \mu_k=\frac{-(-4.75)^m / s^2}{9.8}=0.48\end{aligned}$$\)

Thus, The coefficient of kinetic friction between the surfaces is 0.48.

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Answer:The energy of nuclear fission is released as kinetic energy of the fission products and fragments, and as electromagnetic radiation in the form of gamma rays; in a nuclear reactor, the energy is converted to heat as the particles and gamma rays collide with the atoms that make up the reactor and its working fluid.

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