Will give Brainliest help!!

Answer:.pi/15 cm/s (approx .2094395 cm/s)

Explanation:

Use 2 as your radius which will make the circumference of the clock equal to 4 pi (remember the formula for circumference is pi * diameter)

Using the circuference we can use the formula Speed = distance/Time and plug in our numbers

4pi / 60 seconds = .2094395 cm/s or .002094395 m/s

Answer:

Mass = 2734.875 kg

Explanation:

Given that A water holding tank measures 85 m long, 55 m wide, and 9 m deep.

The volume = 85 × 55 × 9 =

= 42075 m^3

Traces of mercury have been found in the tank, with a concen- tration of 65 mg/L.

1 m^3 = 1000 L

Convert cubic meters to litres.

42075 × 1000 = 42075000 L

From definition of density,

Density = mass ÷ volume.

Substitute the given density and the calculated density into the formula

65 = mass ÷ 42075000

Cross multiply

Mass = 65 × 42075000

Mass = 2734875000 mg

Convert mg to kg

To do that, you will divide the answer by 1000000

2734875000 ÷ 1000000

= 2734.875 kg

Explanation: As the angle is increased the acceleration of the object is increased as the angle increases the component of the force parallel to the incline increases and the component of forced perpendicular to the inclined decreases it is the parallel component of the weight vector that causes the acceleration.

An image is formed at point Y, 0.30 m from the center of the lens. The image formed is real and inverted.

When a lens forms real and inverted images, it typically indicates that the lens is a converging lens (convex lens) and the object is placed beyond the focal point of the lens.

A converging lens brings parallel light rays together to a focal point after refraction. If an object is placed beyond the focal point of a converging lens, the lens will form a real and inverted image on the opposite side of the lens.

In your given scenario, if the lens forms a real and inverted image, it suggests that the lens is a converging lens and the object is positioned appropriately beyond its focal point.

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-- The given question is incomplete, the complete question is

"The diagram below represents an object 0.030 m high placed at point X, 0.60 m from the center of the lens. An image is formed at point Y, 0.30 m from the center of the lens. The image formed is ________." --

The melting point of a substance is the temperature at which the substance changes its phase from solid to liquid.

The freezing point is the temperature at which the substance changes its phase from liquid to solid.

The melting point of a substance is the same as the freezing point. That is when the temperature of the substance in the liquid form is increased continuously, the temperature at which the substance turns into a solid is equal to the temperature at which the substance will turn into liquid from solid if the temperature is decreased continuously, from a higher temperature.

The flaw in the experiment on water recycling is that the student did not see water dripping off the glass plate as expected. To correct this flaw, the student should use a cold glass plate instead of a hot glass plate.

The correct option to the given question is option 4.

When the student holds the hot glass plate above the beaker, the water vapor in the atmosphere will come into contact with the cold surface of the plate and condense, forming water droplets. However, if the glass plate is already hot, it will not be able to cool down the water vapor quickly enough for condensation to occur.

By using a cold glass plate, the temperature difference between the plate and the water vapor will be greater, allowing for faster condensation. This will result in water droplets forming on the glass plate and dripping off, demonstrating the process of water recycling through the atmosphere.

Therefore, the correct method to correct the flaw in this experiment is to use a cold glass plate instead of a hot glass plate. This will enable the student to observe water droplets on the glass plate as expected.

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1. speed = distance/time taken

= 1200/5×60

= 4 m/sec.

then Siham run 4 meters each ine second.

2. if speed = distance/time taken

then time taken= distance/ speed

= 200/1.5 = 200÷(3/2)

= 200×(2/3)

= 133.3333....sec.

then I need 133.333 sec to get to class early.

3. from the previous example

then distance = speed × time taken

= 60×5.5

= 60×(11/2)

=330 km. or 330×10³m.

then Mahmoud ❤️ covers 330km.

4.the q question is repeated.

Due to its great porosity, topsoil is among the best different soils and requires the least amount of water.

Minerals, organic matter, water, and air are really the main elements that make up soil. An average amount of dirt contains 45% minerals, 5% organic matter, 20–30% moisture, and 20–30% air. These percentages are, at best, only estimates.

Numerous essential functions are performed by soil for both and the environment. Our food comes from soil, which also cleans our water, safeguards us from flooding, and resists drought. Because of the massive amounts of carbon it absorbs and stores, it is also essential to fight climate change. Without good soils, agriculture is impossible.

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Answer:

1. Osteoporosis

2. Dehydration

3. Atherosclerosis

4. Aerobic exercise

5. Heart disease, obesity, diabetes and high blood pressure

6. Coronary heart disease, colorectal cancer, diabetes

Explanation:

1. Osteoporosis is the condition of the bones when they become easily fractured and less dense, such that injuries to the bones are likely to cause disability or pain

2. The bod becomes dehydrated in the event that there is insufficient water for proper functioning of the organs due to the loss of more water than the water that is taken in or absorbed.

3. Atherosclerosis is the building of plaque on the inside and outside of the walls of the arteries by cholesterol, fat, and other compounds in the blood often being taken as a problem or undesirable condition of the heart.

4. Processed foods are those that contain chemicals (that give them a good taste) in proportions that can cause illnesses

5. Taking large quantities of (red) meat such as burgers, or barbecued red meat,  can lead to type 2 diabetes, cancers and stroke

When the temperature T of a gas doubles, the average kinetic energy of the individual molecules increases by a factor of 2. The rms-speed increases by a factor of √2.

Explanation:

What is the average kinetic energy of the molecules?

The kinetic energy of the particles in a substance is referred to as thermal energy. The average kinetic energy of the particles in a substance is known as the average kinetic energy. The equation for calculating the average kinetic energy is given by

1/2 * (m) * (v^2) where m is the mass of the particle and v is the velocity of the particle.

The rms-speed (v) of the molecules is given by the equation below.v = √[3kT/m] Where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the mass of the molecule. We may change the temperature T by a factor of 2 to obtain the new rms-speed. The equation is given as follows:

V' = √[3k(2T)/m]=√2[3kT/m]. Therefore, the rms-speed increases by a factor of √2.

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Answer:

draw fuel from the tank and supply pressurized fuel to the engine.

Answer: The answer is C.

Explanation:Just took the quiz

The statement about the relationship between rates of reaction and concentration of reactants true is reactions are slower when there is lower concentration of reactants.

The chemical reaction is the reaction between two reactants which led to the formation of products.

The products are substances which forms after reaction. The reactants are the substances which are original materials.

Oxygen is needed for the reactions that cause artifacts to decay in the ocean.

Some ancient shipwrecks have been well-preserved deep in the ocean.

Reviewing the information in the data table, we conclude that reactions are slower when there is lower concentration of reactants.

Thus, the correct option is C.

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Stereomicroscopes are designed to provide stereoscopic, 3D images of small specimens.

They give an illusion of depth by employing two lenses that offer slightly different perspectives of the same specimen, allowing the brain to merge them and create a 3D image. The specimen appears three-dimensional because the stereomicroscope generates images from two slightly different angles.

A stereomicroscope is a type of microscope that provides three-dimensional imaging (3D) of specimens in low magnification. A stereomicroscope is also known as a dissecting microscope because it is commonly used to dissect small objects and organisms. It's known as a stereo microscope since it has two eyepieces that provide slightly different images of the specimen.

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Option B; In a mechanical wave, the restoring force is the force that actually causes the oscillation opposite the direction of the displacement from equilibrium.

Oscillation is the repeating or periodic oscillation of a quantity, often in time, around a central value (often an equilibrium point) or between two or more states. A swinging pendulum and alternating current are two common examples of oscillation. Physics can employ oscillations to simulate intricate interactions, as those between atoms.

The beating of the human heart (for circulation), business cycles in economics, predator-prey population cycles in ecology, geothermal geysers in geology, the vibration of the strings in guitars and other string instruments, the periodic firing of nerve cells in the brain, and the periodic swelling of Cepheid variable stars in astronomy are just a few examples of the dynamic systems that exhibit oscillations in nearly every branch of science.

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The energy required to raise the temperature of the metal case from 20°C to 70°C is 2550KJ. Details about energy can be found below.

The energy required to raise the temperature of a substance can be calculated using the following formula:

Q = m × c × ∆T

Where;

Q = 100 × 510 × (70 - 20)

Q = 2,550,000J

Q = 2550KJ

Therefore, the energy required to raise the temperature of the metal case from 20°C to 70°C is 2550KJ.

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The angle of the position of the object, relative to the +x direction, 1.5 seconds later, is approximately X degrees.

To find the angle of the position of the object, we can use the following formula:

θ = tan^(-1)(voy / vox)

Given that the initial velocity components are vox = -1.7 m/s and voy = 2.4 m/s, we can substitute these values into the formula:

θ = tan^(-1)(2.4 / -1.7)

By evaluating the inverse tangent function, we can calculate the angle in radians. To convert the angle to degrees, we multiply the result by (180 / π):

θ_degrees = (θ_radians) × (180 / π)

Simplifying this expression gives us the angle in degrees.

It's important to note that the constant acceleration components ax = 1.8 m/s^2 and ay = 3.2 m/s^2 are not required to determine the angle of the position. The angle is solely determined by the initial velocity components vox and voy.

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Answer:

Given that

speed u=4*10^6 m/s

electric field E=4*10^3 N/c

distance b/w the plates d=2 cm

basing on the concept of the electrostatices

now we find the acceleration b/w the plates  to find the horizontal distance traveled by the electron when it hits the plate.

acceleration a=qE/m=\(1.6*10^{-19}*4*10^3/9.1*10^{-31} =0.7*10^{15}\)=\(7*10^{14}\) m/s

now we find the horizontal distance traveled by electrons hit the plates

horizontal distance

\(X=u[2y/a]^{1/2}\)

=\(4*10^6[2*2*10^{-2}/7*10^{14}]^{1/2}\)

=\(3*10^{-2}\)= 3 cm

Answer: 1 st law of motion

Explanation:

Given

The bike hits the pothole and the driver flies over the handlebar. This can be explained by Newton's first law of motion. This law states that a body in the state of rest or motion will remain in that state unless an external force is applied to it.

Here, the bike instantly comes to rest by contacting the pothole which is at rest. while the driver body continues to move in forward direction and as a result it flies over the handlebars.

The kinetic energy of balls is conserved, the collision is elastic.

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During your class stretching, you performed:

1.  you performed warm-ups before stretching

2. you stretched the neck and shoulders

3. you held your breath

4. you performed only static stretches

5 some exercises involved moving from one position to another

Warm-ups before stretching: It's a good practice to perform a few minutes of low intensity activities such as jogging in place or riding a stationary bike before stretching. This helps to increase blood flow and body temperature, which can make the muscles more pliable and less likely to be injured during stretching.

Therefore, Stretching the neck and shoulders: The neck and shoulders are common areas of tension and tightness, and stretching these areas can help to release tension and improve range of motion.

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The statement "They have a positive charge and are present in the nucleus of an atom along with the neutrons" correctly describes protons.

Protons are small particles that make up the nucleus of an atom. They carry a positive charge and have a mass of approximately 1 atomic mass unit. The number of protons within an atom's nucleus defines its atomic number and thus its identity as an element.

For instance, carbon atoms have 6 protons, and oxygen atoms have 8 protons. Protons are vital building blocks of all atoms and play a significant role in the chemical behavior and reactions of elements.

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When you walk, you are more likely to be able to walk at a constant velocity. Your walking speed varies as you walk in real-life scenarios, but you aim to maintain a steady pace or velocity. This is how you can keep track of time and distance traveled.

When you walk at a constant velocity, you move forward with a steady speed and direction. The velocity is defined as the rate at which an object's position changes with respect to time. When you walk, you typically aim to move forward with a constant velocity, which is the speed at which you walk and the direction you walk. In certain situations, a constant velocity is ideal, such as when you are traveling long distances and want to arrive at your destination at a certain time. To ensure that you walk at a constant velocity, you need to maintain a steady pace by keeping your stride consistent and avoiding unnecessary stops or changes in direction. Walking with a constant velocity involves maintaining a steady speed and direction. It is possible to achieve this by maintaining a constant pace, keeping your stride consistent, and avoiding any unnecessary stops or changes in direction.

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The irrigation frequency is approximately 88.89 and the irrigation period is 3000 hours.

I. To determine the localized ETc (crop evapotranspiration) at peak demand for matured grape plantation, we can use the following formula:

ETc = ETo × Kc × Kr × Groundcover

Given:

ETo (reference evapotranspiration) at peak demand = 6.5 mm/d

Kc (crop coefficient) = 1.2

Kr (reduction coefficient) = 0.94

Groundcover = 80% (0.8)

Calculating:

ETc = 6.5 × 1.2 × 0.94 ×0.8

ETc = 5.11744 mm/d

Therefore, the localized ETc at peak demand for the matured grape plantation is approximately 5.12 mm/d.

II. To calculate the peak net and gross water requirements for mango plantation on sandy soil, we use the formula:

Net Requirement = ETc / Ks

Gross Requirement = Net Requirement / EU

ETc (localized ETc) = 5.12 mm/d

Ks (soil water stress coefficient) = 0.91

EU (water use efficiency) = 85% (0.85)

Calculating Net Requirement:

Net Requirement = 5.12 / 0.91

Net Requirement = 5.62 mm/d

Calculating Gross Requirement:

Gross Requirement = 5.62 / 0.85

Gross Requirement = 6.62 mm/d

Therefore, the peak net water requirement for mango plantation on sandy soil is approximately 5.62 mm/d, and the peak gross water requirement is approximately 6.62 mm/d.

b. To determine the number of emitters per plant, we can use the following formula:

Number of emitters = Wetted area per plant / Wetted area per emitter

Tree spacing = 6 m x 6 m

Percent wetted area (Pw) = 50%

Wetted area for sandy soil = 2 m²

Calculating Wetted area per plant:

Wetted area per plant = Tree spacing ×Tree spacing ×Pw

Wetted area per plant = 18 m²

Calculating Number of emitters per plant:

Number of emitters per plant = Wetted area per plant / Wetted area per emitter

Number of emitters per plant = 18 / 2

Number of emitters per plant = 9 emitters

Therefore, the number of emitters per plant is 9.

c. To determine the irrigation frequency and irrigation period, we need to consider the effective rooting depth, soil available moisture content, manageable allowable depletion, and drip emitter discharge.

Effective rooting depth = 1000 mm

Soil available moisture content = 15 cm/m

Manageable allowable depletion = 25% (0.25)

Drip emitter discharge = 0.005 m³/h

Calculating Irrigation Frequency:

Irrigation Frequency = Effective Rooting Depth / (Soil Available Moisture Content × (1 - Manageable Allowable Depletion))

Irrigation Frequency = 1000 / (15 × (1 - 0.25))

Irrigation Frequency = 1000 / (15 × 0.75)

Irrigation Frequency = 1000 / 11.25

Irrigation Frequency ≈ 88.89

Calculating Irrigation Period:

Irrigation Period = Wetted Depth / Drip Emitter Discharge

Irrigation Period = 15 / 0.005

Irrigation Period = 3000 hours

Therefore, the irrigation frequency is approximately 88.89 and the irrigation period is 3000 hours.\

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Answer:

linear charge density is 36.51 x 10^-9 C/m

E at a distance of 2.5 m is 3.27 x 10^6 N/C

Explanation:

(a) The linear charge density is defined as the charge per unit length along the rod. To find the linear charge density (λ), we divide the total charge (Q) by the length of the rod (L):

λ = Q / L

Given that the charge Q is 230 nC (nano Coulombs) and the length L is 6.3 m:

λ = 230 nC / 6.3 m

Converting the charge to Coulombs (1 nC = 10^-9 C):

λ = (230 x 10^-9 C) / 6.3 m

Calculating the linear charge density: λ ≈ 36.51 x 10^-9 C/m

(b) When considering the rod as an infinite charge distribution, we can calculate the electric field (E) at a distance (r) using the formula:

E = λ / (2πε₀r)

Where ε₀ is the permittivity of free space.

Given that the distance (r) is 2.5 m, and the permittivity of free space (ε₀) is approximately 8.85 x 10^-12 C^2/(N·m^2), we can calculate the electric field:

E = (36.51 x 10^-9 C/m) / (2π(8.85 x 10^-12 C^2/(N·m^2))(2.5 m)

Calculating the electric field: E ≈ 3.27 x 10^6 N/C

Therefore, at a distance of 2.5 m from the infinite charge distribution of the rod, the electric field is approximately 3.27 x 10^6 N/C.

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One difference between plants in Florida is that as autumn approaches, seeds are prepared for harvest.

In most nations, including the United States, there are four distinct seasons. One of those seasons is fall. The days get shorter and colder during this time of year.

In the autumn, trees in Florida and Michigan undergo dramatic changes, including colour changes and leaf loss, as they get ready for the winter. What kind of mammal in Florida changes seasonally in the spring? Animals start gaining weight and developing more hair. Animals move farther south in search of milder climates.

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Question:

There are few differences in Florida plants as fall arrives. What differences might you see in the seeds of Florida plants?

A The seeds are dormant.

B The seeds are being produced.

C The seeds are ready for harvest.

D The seeds are starting to germinate.

Answer:

prepared to harvest

Explanation:

One double bond consists 4 electrons, so 2 double bonds means 8 electrons

Answer: 8 electrons

Explanation:edg

Answer:

The electric force between them is 878.9 N

Given:

Identical charge C

Separation between two charges  m

For finding the electrical force,

According to the coulomb's law

Here, force between two balloons are repulsive because both charges are same.

Where    N  Therefore, the electric force between them is 878.

Explanation:

Answer: Speed

Explanation:

Speed is the time it takes something to travel a certain distance. Accelaration is the rate at which an object's speed changes. Velocity is a vector of the object's speed and direction.

Answer:

jus did this, the answer is A, -0.8 m/s^2 :)

Explanation: