What technique could you use to separate sand from water

Firstly, we can write the equation for the electric force. It is:

By applying our values we get

Now, if we remind ourselves of Newton's law, we know that

We know the mass, and we know the Force, so we can find out the acceleration, this gives us:

Thus

Our final acceleration is 0.122 m/s^2

Answer:

13.5 m

Explanation:

Given:

v₀ = 0 m/s

v = 9 m/s

a = 3 m/s²

Find: Δx

v² = v₀² + 2aΔx

(9 m/s)² = (0 m/s)² + 2 (3 m/s²) Δx

Δx = 13.5 m

Question: A loader sack of total mass

is l000 grams falls down from

the floor of a lorry 200 cm high

Calculate the workdone by the

gravity of the load.​

Answer:

19.6 Joules

Explanation:

Applying

W = mgh........................ Equation 1

Where W = Workdone by gravity on the load, m = mass of the loader sack, h = height, g = acceleration due to gravity

From the question,

Given: m = 1000 grams = (1000/1000) kilogram = 1 kg, h = 200 cm = 2 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

W = (1×2×9.8)

W = 19.6 Joules

Hence the work done by gravity on the load is 19.6 Joules

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

mass = 1000 kg

acceleration = 25 m/s²

force = 1000 × 25 = 25,000

We have the final answer as

Hope this helps you

Answer:

9.8 meters per second squared

Explanation:

Answer:

9.8 meters per second squared

Explanation:

edge

Polymers that have grafting refer to the process of attaching a side chain or branch to the main polymer chain, resulting in a branched structure.

This branching can occur at multiple points along the main chain, resulting in a complex and highly branched structure. On the other hand, polymers that have branching refer to the natural occurrence of branches along the main polymer chain, without the addition of side chains.

This branching can occur randomly, resulting in a more linear or slightly branched structure. polymers with grafting involve the intentional addition of side chains to the main chain, resulting in a highly branched structure, while polymers with branching refer to the natural occurrence of branches along the main chain.

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Answer:

Explanation:

A situation in which work is done on an object would be when a mechanic is performing maintenance on a vehicle. The mechanic would be responsible for inspecting the vehicle, replacing necessary parts, and performing any necessary repairs. This would involve using tools such as wrenches, screwdrivers, and other specialized equipment to remove, replace, and repair the various components of the vehicle. Once the maintenance is completed, the mechanic would test the vehicle to make sure it is in proper working order before returning it to the owner.

Answer:

In order to accomplish work on an object there must be a force exerted on the object and it must move in the direction of the force. If either of those conditions are not met, then there is no work.

Explanation:

Work done by the gravity on a rocket going perpendicular upwards is an example of negative work.

Answer:

hope this helps love! There are three methods of heat transfer: conduction, convection, and radiation. Cooking of food usually uses a combination of these methods. Conduction transfers the heat using direct contact; food is heated directly in a metal pan, in a liquid, or surrounded by air. ... The heat from the water is transferred to the egg.

Explanation:

When the water is heated, thermal expansion happens so the particles move farther apart and then the hot water moves up because it is less dense then the colder water. ... Convection is happening because when air is heated by the fire, the air becomes less dense and moves up because denser things sink.

All are correct. The torque on an object depends on the center of mass the moment of inertia, the duration of the force, the force, the angle of the force, the point at which the force is applied.

The object's mass distribution and shape both affect the moment of inertia, which is the barrier to rotational motion. The object is turned by the force and the angle at which it is applied, producing a torque.

The torque is also influenced by the point at which the force is applied since the lever arm is determined by the angle at which the point is in relation to the object's axis of rotation.

Although they may have an impact on the motion and general behavior of the object, the center of mass and duration of the force do not directly affect the torque on an object.

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Complete question

The torque on an object depends on select all that apply

A. center of mass the moment of inertia.

B. the duration of the force

C. the force

D. the angle of the force

E. the point at which the force is applied.

Jane's rate along the summit was 25 mph.

Let's assume that Jane's rate along the summit is represented by the variable "x" in miles per hour. We know that she rode 72 miles uphill at a rate that was 5 mph slower than her rate along the summit. Therefore, her rate uphill would be (x - 5) mph.

To find her average rate for the entire journey, we can calculate the total time taken for each segment and divide it by the total distance covered.

Time taken to ride uphill = Distance / Rate

Time taken to ride uphill = 72 miles / (x - 5) mph

Time taken to ride along the summit = Distance / Rate

Time taken to ride along the summit = 21 miles / x mph

Since the total time taken for the entire journey is 3 hours, we can write the equation:

Time taken to ride uphill + Time taken to ride along the summit = Total time

72 / (x - 5) + 21 / x = 3

By solving this equation, we find that x = 25 mph. Therefore, Jane's rate along the summit was 25 mph.

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Explanation:

the figure in the left side has higher frequency.

because it has more nos. of wave in 1sec.

The focal length (in meters) of a lens  = 18.4 m

When a lens is focused at infinity, the focal length of the lens is discovered. We can determine the angle of view, or how much of the scene will be captured, and the magnification, or how big the individual elements will be, by measuring the focal length of the lens. A narrower field of view and a higher magnification result from a longer focal length.

Radius of curvature is 9.2 m.

A refractive index 1.2.

The focal length (in meters) of a lens  =

We know that the formula for  focal length:

focal length = 2 * radius of curvature

So,

Putting the value in the formula :

we get

focal length = 2 * 9.2

                    =  18.4 m

The focal length (in meters) of a lens  = 18.4 m

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Answer:

(a) h = 5.1 m

(b) v = 14.13 m/s

Explanation:

(a)

We will use the law of conservation of energy. For this situation it states that:

Loss in Potential Energy of Sphere = Gain in Kinetic Energy of the Sphere

mgh = (1/2)mv²

h = v²/2g   --------------- equation (1)

where,

h = height = ?

v = speed at lowest point = 10 m/s

g = 9.8 m/s²

Therefore,

h = (10 m/s)²/(2)(9.8 m/s²)

h = 5.1 m

(b)

using the equation (1)

h = v²/2g

v = √2gh

where,

v = velocity = ?

g = 9.8 m/s²

h = height = 2(5.1 m) = 10.2 m

Therefore,

v = √[2(9.8 m/s²)(10.2 m)]

v = 14.13 m/s

The height from which the sphere was released is 5.1 m

When the height is doubled, the speed of the sphere becomes 14.14 m/s.

The given parameters:

The height from which the sphere was released is calculated as follows;

\(P.E = K.E\\\\mgh = \frac{1}{2}mv^2\\\\gh = \frac{1}{2}v^2\\\\h = \frac{v^2}{2g}\\\\h = \frac{(10)^2}{2(9.8)} \\\\h = 5.1 \ m\)

When the height is doubled, the speed of the sphere becomes;

\(h = \frac{v^2}{2g} \\\\v^2 = 2gh\\\\v = \sqrt{2gh} \\\\v = \sqrt{2 \times 9.8 \times (2 \times 5.1)} \\\\v = 14.14 \ m/s\)

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Answer:

Load = 80 Newton

Explanation:

Given the following data:

Effort = 20 N

Load arm = 15 cm

Effort arm = 60 cm

Conversion:

100 cm = 1 meters

15 cm = 15/100 = 0.15 meters

60 cm = 60/100 = 0.6 meters

To calculate the load, we would use the expression;

Effort * effort arm = load * load arm

Substituting into the expression, we have;

20 * 0.6 = load * 0.15

12 = load * 0.15

Load = 12/0.15

Load = 80 Newton

When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).

If the liquid is a mixture, as the more volatile components boil off, the boiling point rises, so adding energy causes the temperature to go up. If you add enough energy, all the liquid evaporates, so there is no liquid temperature

The light your friend receives, relative to light from an equivalent source on the spaceship is slightly lower in frequency.

option A.

The gravitational redshift happens when light tries to escape from a gravitational field.

A gravitational redshift is defined as a shift toward longer wavelengths of spectral lines emitted by atoms in strong gravitational fields.

The redshift of light or other electromagnetic radiation is caused by a strong gravitational filed.

If you shine a beam of monochromatic light earth to an astronaut friend in orbit. The light your friend receives, relative to light from an equivalent source on the spaceship is slightly lower in frequency because the light will travel from higher gravitational energy zone to lower gravitational energy zone. So lower gravitational energy implies lower frequency of light.

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The concept of the pendulum is used in pendulum clocks to keep time. The pendulum swings back and forth in a continuous motion at a fixed rate that is determined by the length of the pendulum and the force of gravity.

This motion is used to regulate the movement of the clock's gears, which control the hands on the clock face.The mechanism of a pendulum clock is such that when the pendulum swings in one direction, it pushes a toothed wheel or gear, which in turn moves the other gears, causing the clock's hands to move forward.

When the pendulum swings back in the opposite direction, it again pushes the gear, causing the hands to move further forward. This cycle continues, with each swing of the pendulum causing the hands to move forward by a set amount. The length of the pendulum determines the rate at which the hands move forward, with longer pendulums causing the hands to move more slowly.

In a pendulum clock, the pendulum swings back and forth in a continuous motion at a fixed rate that is determined by the length of the pendulum and the force of gravity. This motion is used to regulate the movement of the clock's gears, which control the hands on the clock face. The pendulum clock is an improvement on the original verge escapement clocks, which were prone to errors due to the uneven force of the mainspring.The pendulum is a simple yet effective device that can keep accurate time. Its motion is governed by the law of conservation of energy, which states that energy cannot be created or destroyed, only transferred from one form to another.

When the pendulum is pulled to one side and released, it swings back and forth, converting potential energy into kinetic energy and back again. The period of the pendulum, or the time it takes to complete one full swing, is determined by the length of the pendulum and the force of gravity. By adjusting the length of the pendulum, the rate at which it swings can be altered, allowing it to keep accurate time.

To keep the pendulum clock running accurately, it needs to be adjusted periodically. This is done by altering the length of the pendulum, either by moving a weight up or down along the pendulum rod or by turning a screw at the bottom of the pendulum bob. This alters the period of the pendulum, which in turn changes the rate at which the clock runs.

The pendulum clock is a testament to the ingenuity of humanity. By using the simple yet effective concept of the pendulum, clockmakers were able to create accurate timepieces that revolutionized the way we keep time. Today, the pendulum clock may have been superseded by more advanced technologies, but its legacy lives on in the modern clocks and watches we use every day.

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Early sulfate reducers set the stage for the evolution of

b) photosynthesis, the first form which harvested hydrogens from h2s.

The two energy-carrying molecules ATP and NADPH are then added to the Calvin Cycle in plants along with carbon dioxide to produce the glucose molecule, which has a longer half-life than the other two energy-carrying molecules.

The Krebs Cycle is used by bacteria. Carbon fixation, reduction reactions, and RuBP regeneration all take place in three steps.

Even though they only occur when light is present, these processes are known as light-independent reactions.

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Answer:

The biggest difference between the two is in how they produce light. Incandescent bulbs produce light by a heating a metallic filament until it starts to radiate light. On the other hand, fluorescent lamps produce light by exciting a gas and causing it to glow.

Explanation:

We can solve this problem by using conservation of energy. The potential energy stored in the compressed spring is converted into kinetic energy of the projectile as it is launched, and then into potential energy as the projectile rises to its maximum height.

The potential energy stored in the compressed spring is given by:

U = (1/2)kx^2

where k is the spring constant and x is the distance the spring is compressed. This potential energy is converted entirely into kinetic energy of the projectile when it is launched, given by:

K = (1/2)mv^2

where m is the mass of the projectile and v is its velocity. We can find v by using conservation of energy again, as the kinetic energy at launch is equal to the potential energy gained by the projectile as it rises to its maximum height:

K = U = mgh

where g is the acceleration due to gravity and h is the maximum height reached by the projectile.

Substituting the expressions for U and K and solving for x, we get:

x = sqrt(2mgh/k)

Plugging in the given values, we get:

x = sqrt(2 * 0.0209 kg * 9.81 m/s^2 * 5.0 m / 1200 N/m)

x = 0.179 m

Therefore, the spring was initially compressed by a distance of 0.179 meters.

Answer:

The marble acquires a positive charge andattracts the piece of silk. The marble acquires a negative charge andrepels the piece of silk.

Explanation:

The average velocity during the time period [1, 2] is 8 cm/s, calculated by dividing the displacement of the particle by the time interval.

To find the average velocity during the time period [1, 2], we need to calculate the displacement of the particle at t = 1 and t = 2, and then divide it by the time interval.

The displacement of the particle at t = 1 is:

s(1) = 2sin(π * 1) + 4cos(π * 1) = 2(0) + 4(-1) = -4 cm

The displacement of the particle at t = 2 is:

s(2) = 2sin(π * 2) + 4cos(π * 2) = 2(0) + 4(1) = 4 cm

The time interval is Δt = 2 - 1 = 1 second.

The average velocity during the time period [1, 2] is given by:

\(\begin{equation}v_avg = \frac{s(2) - s(1)}{\Delta t} = \frac{4 - (-4)}{1} = 8 \text{ cm/s}\)

Therefore, the average velocity during the time period [1, 2] is 8 cm/s.

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The charge of a particle in a magnetic field can be determined by measuring the force, velocity, and strength of the magnetic field using the Lorentz force equation. There are various methods to measure the charge, such as using a particle accelerator or mass spectrometer.

In a magnetic field, charged particles experience a force that can be used to determine their charge. This force, known as the Lorentz force, is given by the equation F = q(v x B), where F is the force, q is the charge of the particle, v is the velocity of the particle, and B is the strength of the magnetic field.

To determine the charge of a particle in a magnetic field, you can measure the velocity of the particle and the strength of the magnetic field, and then measure the force experienced by the particle. By rearranging the equation F = q(v x B), you can solve for the charge q.

It is important to note that the Lorentz force only applies to charged particles that are in motion. If the particle is stationary, it will not experience any force in a magnetic field.

In practice, there are many ways to measure the charge of a particle in a magnetic field, such as using a particle accelerator or a mass spectrometer. These techniques involve manipulating the motion of the particle in a controlled way and measuring the resulting forces and velocities to determine its charge.

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Complete question:

How can I know the charge of a particle in a magnetic field?

Answer:

1.36 x \(10^{-15}\)\(ms^{-2}\)

Explanation:

The equation \(g = \frac{G*M}{R^2}\) would be used where:

g = acceleration due to gravity

G = universal gravitational constant (6.67408 × \(10^{-11}\) \(m^{3} kg^{-1} s^{-2}\))

M = mass

R = radius.

assuming the value following 10 is its exponent, which is a little confusing, the values given would simply be substituted.

Anyone can correct me if I'm wrong.

Answer:

There is only a beat frequency when the frequency heard (perhaps a tuning fork) is different from the frequency from  the object in question (piano string, etc.).

The beat frequency equals the difference of the frequencies of the sources.

The piano tuner should adjust the tension in the wire to: C. decrease the amount of interference and decrease the beat frequency.

A wave can be defined as a disturbance created in a medium, which progressively transports energy from a source to another location without the transportation of matter.

Basically, some of the phenomenon and properties associated with waves include the following:

An interference refers to a phenomenon in which two (2) waves meet while traveling along the same medium and they superpose to produce a resultant wave with either a lower, greater, or the same amplitude.

In this scenario, a beat frequency is being heard by a piano tuner when using a tuning fork to tune a piano wire. Thus, the piano tuner should adjust the tension in the wire, so as to decrease the amount of interference and the beat frequency.

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