How much weight does a 12kg object have

When you decrease the distance to the nut, the lever arm also decreases. Hence the correct option is "It decreases".

This is because the lever arm is the perpendicular distance between the axis of rotation and the line of action of the force. In this case, the axis of rotation is the nut and the force is applied at a point closer to the nut. As the distance between the force and the nut decreases, the lever arm also decreases.

This relationship between distance and lever arm is important in understanding how levers work. A longer lever arm allows for greater torque or rotational force to be applied with the same amount of force. Conversely, a shorter lever arm requires more force to generate the same amount of torque. By decreasing the distance to the nut, you are effectively shortening the lever arm and therefore reducing the torque that can be applied.

Understanding the relationship between distance and lever arm can be useful in a variety of contexts, such as in engineering, physics, and even sports. It can help in designing more efficient machines or in understanding how to optimize physical movements for maximum performance.

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Water flowing out of an enclosed basin due to the tides is called a tidal outflow. Tidal outflows occur when the level of the water in the basin is higher than the level of the water outside, causing the water to flow out to the lower sea level.

This phenomenon is commonly observed in areas with narrow inlets or channels, where the tides can create a significant difference in water levels between the basin and the ocean. Tidal outflows are important ecological processes that affect the movement of nutrients and sediment in coastal ecosystems, and they can also impact the local climate and water quality.
Water flowing out of an enclosed basin due to the tides is called an ebb current. Ebb currents occur during the falling tide phase when water levels recede and flow back into the ocean. This process is a vital part of tidal dynamics, as it regulates water levels in coastal areas and contributes to the overall movement of water in our planet's oceans. Understanding ebb currents and their counterpart, flood currents (which occur during rising tides), is essential for navigation, coastal management, and marine ecosystem preservation.

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1. Electron

2. Neutron

3. Nucleus

4. Atom

5. Molecule

Answer:

.

Explanation:

If the crown was indeed made of pure gold, it would have displaced \(31.09 cm³\) of water.

To determine the volume of water displaced by the crown, we need to use Archimedes' principle, which states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object.

The density of gold is given as \(19.3 g/cm³\). Since we have the mass of the crown, we can calculate its volume using the formula:

Volume = Mass / Density

Given:

Mass of the crown =\(6.00 x 10² g\)

Density of gold = \(19.3 g/cm³\)

Volume of the crown =\((6.00 x 10² g) / (19.3 g/cm³)\)

Let's calculate the volume:

Volume =\((600 g) / (19.3 g/cm³)\)

Volume = \(31.09 cm³\)

Therefore, if the crown was indeed made of pure gold, it would have displaced \(31.09 cm³\) of water.

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In a perfectly inelastic collision, the two objects stick together after the collision and move as a single combined object.

To solve the problem, we can use the law of conservation of momentum, which states that the total momentum of a system is conserved in the absence of external forces.

Before the collision, the momentum of the motorcycle is:

P1 = m1v1 = 500 kg * 20 m/s = 10000 kgm/s

where m1 is the mass of the motorcycle and v1 is its velocity.

The car is stationary, so its momentum before the collision is:

P2 = m2v2 = 1000 kg * 0 m/s = 0 kgm/s

where m2 is the mass of the car and v2 is its velocity.

The total momentum of the system before the collision is:

P1 + P2 = 10000 kg*m/s

After the collision, the combined mass of the wreckage is:

m = m1 + m2 = 500 kg + 1000 kg = 1500 kg

Let's assume that the wreckage moves at a velocity v after the collision.

By the law of conservation of momentum, the total momentum of the system after the collision is equal to the total momentum before the collision:

P = m*v

P = P1 + P2

10000 kg*m/s = 1500 kg * v

v = 10000 kg*m/s / 1500 kg = 6.67 m/s

Therefore, the velocity of the wreckage after the collision is 6.67 m/s.

The shortest distance required to to stop the automobile by locking the brakes is 27m.

The coefficient of friction is 0.83 between tires and dry pavement.

We have to find the shortest distance in which the automobile should come to stop from 21.2m/s.

The net acceleration of the automobile is,

a = Fr/m

Fr is the frictional force,

m is the mass of the body,

a= ug

g is the gravitational acceleration.

Putting values,

a = 0.93 x 9.8

a = 8.31 m/s².

Now, using the equation of motion,

V² - U² = 2as

s is the stopping distance,

V is the final speed,

U is the initial speed,

a is the acceleration of the automobile.

Putting values,

(21.2)² = 2 x 8.13 x s

s = 27m.

So, the stopping distance of the automobile is 27m.

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Based on the given scenario, the electron would be affected by the magnetic field of the horseshoe magnet.

As it is shot through the spot between the ends of the magnet, it would experience a repulsive force from both poles.

This would cause its direction to change and it would be turned back.

The increase in speed would depend on the strength of the magnetic field and the distance between the electron and the poles.

Ultimately, the electron would not be unaffected by the field, but rather would experience a force that changes its trajectory.

It is not necessarily attracted to one pole and repelled by the other, but rather experiences a repulsive force from both poles.

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Because we live in a universe with an accelerating expansion rate, the actual age of the universe is greater than the Hubble time.

The Hubble time is a measure of the age of the universe based on the current rate of expansion. According to the current best estimates, the Hubble time is around 13.8 billion years. However, the expansion of the universe is accelerating, which means that the universe is expanding faster and faster over time.

Because of this acceleration, the actual age of the universe is greater than the Hubble time. The exact age of the universe is difficult to determine, as it is influenced by a variety of factors, including the density and composition of the universe, the rate of expansion, and the effects of dark energy. However, current estimates suggest that the age of the universe is somewhere between 13.8 billion and 14.2 billion years.  

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Entropy changes that are positive (+) indicate more chaos. The entropy of the universe is increasing. The entropy of a universe increases whenever there is any spontaneous change.

As the ice melts, the molecules grow disorganised as they are now able to move about. The water is then heated to transform into a gas, releasing the molecules to move freely through space. Both of the above reactions would have a positive entropy (DS).

Positive entropy indicates an increase in randomness in a system. Positive entropy processes include boiling and evaporation. A system has less randomness when the entropy is negative. A few instances of negative entropy processes include freezing and condensation.

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The Standard dry/solid measuring nuclear cups typically come in four sizes: 1/4 cup, 1/3 cup, 1/2 cup, and 1 cup. These cups are used for measuring dry or solid ingredients such as flour, sugar, and rice.

The important to use the correct measuring nuclear cup size for a recipe to ensure accuracy and consistency in the final result. Using too much or too little of an ingredient can affect the taste and texture of a dish. When measuring dry or solid ingredients, it's also important to level off the cup using a flat utensil to ensure that the measurement is accurate. It's also helpful to have a set of measuring cups with both metric and imperial measurements for international recipes. Measuring cups are a basic but essential tool in any kitchen, and investing in a good quality set can make a big difference in the outcome of your cooking and baking.

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Ball A with diameter d and ball B with diameter 2d are dropped from the same height. When the two balls have the same speed, the ratio of the drag force on ball A to the drag force on ball B will be F1 : F2 = 1 : 4

a section of a straight line with all of its ends on the perimeter of a circle; a straight line cutting through the middle of either a figure or body. 2: the diameter's length. size, a noun.

If you look at the cycle wheel, the spikes that run through the center from one end to the other are an illustration of width. This is comparable to a circle's diameter, which is a line segment that extends from one end of the circle to the other end while passing through center.

formula to calculate drag force is = F(d) = 1/2 * C * rho*A *v²

C = drag coefficient

A = area of object

rho = density in which object is moving

v = velocity of object

A = area of the object

F1 ( drag force on ball A ) = 1/2 * C * rho * area of ball A * v²

F2 (drag force on ball A ) = 1/2 * C * rho * area of ball B *v²

since , both the balls have same speed and falling in same environment hence , density and speeds are the same , the only difference is in area of both the balls

F1/F2 = area of ball A / area of ball B  =  4 * pi *r1²  / 4 * pi *r2²

       = r1²  /  r2²

        =  (d/2)²/(2d/2)²

        = 1/4

F1 : F2 = 1 : 4

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Answer:

Mechanical Advantage of car jack is 20

To solve this problem, we will use the principle of conservation of mass applied to fluid flow, which states that the mass flow rate of the fluid is constant throughout the hose.

Explanation:

Mathematically, this is represented by the equation:

mass_flow_rate_in = mass_flow_rate_out

The mass flow rate can be calculated using the formula:

mass_flow_rate = area × velocity

where area = π(diameter/2)^2.

First, we need to calculate the area of the hose and nozzle:

Area_hose = π(0.016/2)^2
Area_hose ≈ 0.000201 m^2

Area_nozzle = π(0.0050/2)^2
Area_nozzle ≈ 0.0000196 m^2

Now, let's apply the conservation of mass principle:

Area_hose × velocity_hose = Area_nozzle × velocity_nozzle

We know the diameter and velocity of the hose (0.016 m and 3 m/s). We need to find the exit velocity of water from the nozzle (velocity_nozzle).

0.000201 × 3 = 0.0000196 × velocity_nozzle

Rearrange the equation to find the velocity_nozzle:

velocity_nozzle = (0.000201 × 3) / 0.0000196
velocity_nozzle ≈ 30.66 m/s

The exit velocity of water from the garden hose when a nozzle of diameter 0.0050 m is attached to the end of the hose is approximately 30.66 m/s.

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Answer:

No it's different for different objects because they made of different materials

The object that has potential energy is the can of gasoline.

Potential energy is described as the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

The forms of potential energy includes:

Potential energy is described as the energy a system has due to position, shape, or configuration.

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Explanation:

good luck with the one that was on the one that has to be done

Light can undergo refraction or reflection when it encounters a barrier between two materials.

When light rays hit a surface, pass through a transparent medium and then another, or proceed through a medium whose composition is constantly changing, they change direction. According to the law of reflection, the angle of the reflected and refraction ray when reflecting off a flat surface is equal to the angle of the incident ray. All angles in geometrical optics are typically measured with respect to the surface normal, or a line perpendicular to the surface. The incident and surface normal planes determine the plane in which the reflected light always falls. Plane and curved mirrors both create pictures that may be explained by the law of reflection.

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Answer:

I think the answer is 1 and 3 .... Cuase they once removed, the electricity has no other way to pass on...

1 and 3 rings should Adil remove from arrangement to STOP the bulb glowing.

Electric circuit is a way for electric current to be transmitted. A lamp, an electric motor, a computer, and the connecting wires or transmission lines are examples of current-using equipment. An electric circuit also contains a device that provides energy to the charged particles that make up the current, such as a battery or a generator. Kirchhoff's principles and Ohm's law are two fundamental laws that mathematically define how electric circuits operate.

According to fig, only 1 and 3 rings have one way of passage of electric current. So, when 1 or 3 ring will be removed from the circuit, the circuit becomes open and no current passing through the circuit and  the bulb stops glowing.

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Diane is not ranked because she did not record the change in frequency when increasing the tension in her low E string.

To rank the members based on the initial frequency of their low E string, we can compare the given beat frequencies. The larger the beat frequency, the larger the difference in frequency between the strings. Based on the given information, we can rank the members as follows:

Evita = 5 Hz

Buffy = 4 Hz

Aiko and Freja (tied) = 3 Hz

Chandra = 1 Hz

Note that Diane is not ranked because she did not record the change in frequency when increasing the tension in her low E string.

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The daughter isotope in the given nuclear reaction is 218/86Rn.

In the nuclear reaction 222/88Ra -> 218/86Rn + 4/2He, the daughter isotope is 218/86Rn. This reaction is an example of alpha decay, where the parent nucleus, in this case, radium-222 (with 88 protons and 134 neutrons), spontaneously emits an alpha particle (helium nucleus) from its nucleus.

As a result of the alpha decay, the daughter nucleus, radon-218 (with 86 protons and 132 neutrons), is formed. This process reduces the atomic number by two and the mass number by four. The daughter nucleus formed by the alpha decay may be radioactive, and it may further decay by emitting particles or energy to reach a more stable state.

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Answer:

a

Explanation:

are found in the nucleus and are locked in

Answer:

A

Explanation:

Thats what I think the answer is because protons and neutrons bond together in the nucleus.

Answer:

speed=330m/s

Explanation:

the speed of wave is given as

speed(meter per second) =frequency(hertz) * wavelength(meters)

so using the above formula we substitute the figures given in the question in the formula we get

speed = 0.4*825

speed =330m/s

note m/s is the si unit for speed which is read as meter per second

therefore speed =330m/s

In graph 4, the resultant vector has an upward slope, in graph 5 the slope is slightly upward whereas, in graph 6, the resultant vector goes parallel to temperature.

In graph 4 from point 1 to point 2, the temperature increased but there is no increase in pressure at point 2 there is a sudden increase in pressure with no increase in temperature.

In graph 5 from point 1 to point 2, the pressure dropped suddenly with no change in temperature than from point 2 to point 3 the change in pressure and temperature is uniform and from point 3 to 4, there is no change in pressure but sudden decrease in temperature occurs.

In graph 6 from point 1 to 2, no change in temperature occurs but sudden change in pressure then from point 2 to 3  more change in pressure but also some change in temperature so the slope goes upwards than from point 3 to 4 no change in pressure but kept increasing then from point 4 to 5 both temperature and pressure dropped.

So we can conclude that graph 4 has upward movement, graph 5 has a slightly moved upward and graph 6 has a parallel line.

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Answer:

dog

Explanation:

I know that the answer to your question is b because why not. just trust me

Answer:

hope it is helpful to you

When selecting a temperature sensor for monitoring rapidly changing temperatures, two important characteristics to consider are i) a small thermal capacity and ii) high linearity.

A small thermal capacity allows the sensor to respond quickly to temperature changes, capturing accurate and real-time data. High linearity ensures that the sensor's output is proportional and consistent with the actual temperature, providing reliable measurements throughout the temperature range.

Explanation:

i) A small thermal capacity is crucial because it enables the temperature sensor to have a rapid response time. Sensors with low thermal capacity can quickly absorb and dissipate heat, allowing them to accurately reflect changes in temperature. This is particularly important when monitoring rapidly changing temperatures to ensure timely and precise measurements.

ii) High linearity ensures that the output of the sensor corresponds linearly to the actual temperature. Linearity indicates that the relationship between the sensor's response and the temperature is consistent and predictable.

High linearity is vital for accurate temperature monitoring, as it ensures that the measurements provided by the sensor are reliable and can be trusted throughout the entire temperature range.

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Answer:

The second (abbreviation, s or sec) is the Standard International ( SI ) unit of time. One second is the time that elapses during 9,192,631,770 (9.192631770 x 10 9 ) cycles of the radiation produced by the transition between two levels of the cesium 133 atom. ... One second is equal to 1/86,400 of a mean solar day.

Explanation:

The solution to the differential equation is then:

x(t) = 0.25e⁽⁻⁶·⁰²⁵t⁾ cos(2.181t)

And the system is underdamped because the roots of the characteristic equation have a non-zero imaginary part.

The force required to stretch a spring is directly proportional to the amount the spring is stretched. This relationship is known as Hooke’s Law. It can be expressed mathematically as:

F = -kx

Where F is the force applied to the spring, x is the displacement of the spring from its equilibrium position, and k is the spring constant.

For a mass-spring system under the influence of a damping force, the differential equation governing the system is:

m(d2x/dt2) + c(dx/dt) + kx = 0

where m is the mass of the object attached to the spring, c is the damping coefficient, and k is the spring constant.

The given force of 2 lb stretches the spring by 1 ft, so the spring constant is given by k = F/x = 2/1 = 2 lb/ft.

The 8-lb weight is released 4 in. above the equilibrium position, which is 0.25 ft. The initial displacement is therefore x(0) = 0.25 ft, and the initial velocity is v(0) = 0. The damping force is given by f_d = -3/2v. Using the values given, the differential equation for the system is:

m(d2x/dt2) + c(dx/dt) + kx = 0 (1)

The values of m, k, and c are given by

m = 8/g = 8/32.2 = 0.248 kg

k = 2/lb/ft * 0.4536 kg/lb * 0.3048 m/ft = 0.294 kg/sm = 0.248 kgc = 3/2

The equation of motion is then:

d2x/dt2 + 12.05dx/dt + 1.186x = 0 (2)

where we have substituted the values of m, c, and k into equation (1).

The characteristic equation is:

r2 + 12.05r + 1.186 = 0 (3)

Solving for the roots of the characteristic equation, we find:

r = (-12.05 ± √(12.052 - 4(1.186)))/2= -6.025 ± 2.181i

The roots are complex conjugates, so the solution to the differential equation can be written as:

x(t) = e⁽⁻⁶·⁰²⁵t⁾(C₁ cos(2.181t) + C₂ sin(2.181t)) (4)

The initial displacement and velocity are given by x(0) = 0.25 and v(0) = 0.

Substituting these values into equation (4) and taking the derivative, we get:

x(0) = C₁ = 0.25dx/dt|t=0 = -6.025

C₂ = 0

Solving for C₁ and C₂, we get:

C₁ = 0.25C2 = 0

The solution to the differential equation is then:

x(t) = 0.25e⁽⁻⁶·⁰²⁵t⁾ cos(2.181t) (5)

The system is underdamped because the roots of the characteristic equation have a non-zero imaginary part.

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