Which voice can produce a pitch that has a speed of 343 m/s and a wavelength of 0. 68 m? check all that apply.

Answer:

Larger than mercury, venus, earth, mars, uranus, neptune

smaller than jupiter

Answer:

Ff = 7.35*10^5 N

Explanation:

To find the maximum transverse pulling force you use the following formula, for the friction force:

\(F_f=\mu N=\mu Mg\) (1)

μ: friction coefficient = 0.15

N: normal force, which is equal to the weight over the wheel

M: mass of th train = 500 ton = 500 000 kg

g: gravitational acceleration = 9.8 m/s^2

You replace the values of the variables in the equation (1):

\(F_f=(0.15)(500000kg)(9.8m/s^2)=735000 N=7.35*10^5N\)

hence, the maximum transverse pulling force is 7.35*10^5 N

Answer:

The friend has more kinetic energy

Explanation:

This person is going faster than the other.

Answer:

In order to calculate the required force ratio for the vulcanizer to raise the vehicle with the screw jack, we first need to determine the required torque for the screw jack to lift the load. The torque required is equal to the force applied to the end of the arm of the screw jack multiplied by the length of the arm.

If the pitch of the screw is 0.45 cm, and the arm is 60 cm long, the required force to lift a load with the screw jack can be calculated using the following formula:

Force = Torque / Arm length

Plugging in the values we know, we get:

Force = (Torque / 60 cm) / (0.45 cm/rev)

Where "rev" refers to one revolution of the screw.

To raise the load with an efficiency of 75/pi%, we need to input a force that is sufficient to overcome the load and the friction in the system. The required input force can be calculated using the following formula:

Input Force = (Required Force / Efficiency) * (100 / pi)

Plugging in the values we know, we get:

Input Force = (Required Force / (75/pi)) * (100 / pi)

The input force ratio is the ratio of the input force to the required force. To get the required input force ratio, we can divide the input force by the required force:

Input Force Ratio = Input Force / Required Force

I hope this helps! Let me know if you have any other questions.

The two reasons why a home computer scanner requires electromagnetic waves to operate are

C. The charge-coupled device contains a silicon chip that releases electrons by the photoelectric effect, producing an image.

D. Visible light needs to reflect off an object and be captured by a charge-coupled device.

The waves that may go through vacuum space are electromagnetic waves. Magnetic and electrical components are present in electromagnetic waves.

All of them move at the speed of light. The atoms of the material absorb and reemit wave energy as part of the energy transport process through a medium. To transfer their energy from one place to another, mechanical waves need a medium to move through.

Therefore, the correct options are c and d.

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Answer:

White light can be separated into different colors using a special lens called a prism. As visible light passes from air into the glass, the change in medium causes a change in direction and speed. Refraction causing the separation of white light into its various color wavelengths is called dispersion.

hope this helps

Answer:

Due to lower risk of injury or damage.

Explanation:

The high divers would choose to enter the water from the feet first because there is low risk of injury. The brain is the most important part of the body which very sensitive to any small injury. Small injury to brain leads to big problems in life. High divers can reach speeds of nearly 60 mph and enters about 28m into the water in about three seconds which can damage the head region if comes in contact with the ground so this is the reason the high divers avoid of entering in the water through their heads and choose entering through their feet.

The largest wavelength of light falling on double slits separated by 1.20 μm for which there is a first-order maximum is 2.40 μm, which is in the infrared part of the spectrum.

The first-order maximum occurs when the path difference between the waves from the two slits is equal to one wavelength. This path difference can be calculated using the equation Δx = d sinθ, where Δx is the path difference, d is the slit separation, and θ is the angle of diffraction.

For the first-order maximum, θ = λ/d, where λ is the wavelength of light. Rearranging this equation to solve for λ gives λ = d sinθ.

Substituting the given values, we get λ = 1.20 μm * sin(1 * π/180) = 0.0209 μm. This is the smallest wavelength for the first-order maximum. The largest wavelength for the first-order maximum occurs when sinθ = 1, which gives λ = 2d = 2.40 μm. This is in the infrared part of the spectrum, which ranges from about 0.75 μm to 1000 μm. Therefore, the first-order maximum for the given double slits occurs in the infrared part of the spectrum.

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Answer:

Alternating

Explanation:

Edge 2020

Answer:

Troposphere

High-pressure areas form due to downward motion through the troposphere, the atmospheric layer where weather occurs.

Answer:

Lightning is a discharge of electricity. A single stroke of lightning can heat the air around it to 30,000°C (54,000°F)! This extreme heating causes the air to expand explosively fast. The expansion creates a shock wave that turns into a booming sound wave, known as thunder.

Explanation:

Given:

The mass on the table is,

The hanging mass is,

THe coefficient of friction is,

let the acceleration of the whole system is a (for the hanging mass it is downward and for the mass on the table it is rightward). the tension towards The fixed point of the pulley is T.

we can write,

Adding these equations we get,

Substituting the values we get,

Hence the acceleration is 6.66 m/s^2.

The distance travelled by the car when the brakes were applied is 12.11 m

The following data were obtained from the question:

The distance travelled can be obtained as follow:

s = ut + ½at²

s = (25 × 0.45) + (½ × 8.5 × 0.45²)

s = 11.25 + (4.25 × 0.2025)

s = 11.25 + 0.860625

s = 12.11 m

Thus, the distance travelled in 0.45 s by the car is 12.11 m

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The size of the disc will Increase

The hole will enlarge in proportion to the metal if the disc is homogeneous and isotropic (the same in all directions). This is evident because, since the hole's edge is constructed of metal, the thermal expansion equation dL=LdT holds true for all lengths related to the metal, including the circle of the hole. Additionally, if the diameter of the hole increases, so does its circumference.

The analysis becomes more challenging if your disc has distinct areas formed of various metal kinds or if the metal that makes up your disc has an anisotropic crystal structure, meaning that it expands by different amounts in different directions. But given the total change in size is still an expansion, I believe the hole would become bigger in all scenarios.

Hence ,The size of the disc will Increase

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You'll See After You Have an Answer!

Explanation:

For instance, on my answer, you'll see a button presenting the words "Mark Brainliest"

Cathodic protection aims to shift the potential of the structure in the negative direction, typically by a specific amount, to provide effective protection against corrosion. The criteria for cathodic protection are:

a) A shift in the pipe-to-soil potential in the negative direction by 0.40 to 0.50 V from the initial potential for bare structures. This means that the pipe-to-soil potential should be lowered by 0.40 to 0.50 V compared to its initial potential when it was not protected.

b) To achieve a pipe-to-soil potential of 0.85 V with respect to an Ag-AgCl electrode. This means that the pipe-to-soil potential should be maintained at 0.85 V relative to the Ag-AgCl electrode. This potential ensures effective protection against corrosion.

c) To achieve a potential of -0.85 V with respect to a copper sulfate electrode. This means that the potential of the structure should be lowered to -0.85 V relative to the copper sulfate electrode. This potential helps to prevent corrosion by making the structure more cathodic.

d) To polarize the whole structure to the cathodic potential of the structure. This means that the entire structure should be brought to a cathodic potential to ensure uniform protection against corrosion. This involves making the entire structure more negative in terms of potential.

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Answer:

Then we see ourselves as dynamic beings, looking for ways to engage in activities using our abilities and expressing our personalities, we are reflecting on the Humanistic Theory

Explanation:

Humanistic theory emphasizes the inherent worth of the individual, the centrality of human values, and the creative, active nature of human beings. This approach encourages people to strive for self-realization and self-actualization, recognizing their capacity for dynamic growth and self-determination. Psychologists like Carl Rogers and Abraham Maslow contributed significantly to this school of thought.

Answer:

Because water is wet

Explanation:

Water is wet

The speed in miles per hour is approximately 288.6 mph, and the speed in feet per second is approximately 678.2 ft/s.

To convert the speed from kilometers per hour to miles per hour, you can use the conversion factor of 0.6214 miles per kilometer. Multiplying the given speed of 464.5 km/hr by this conversion factor gives approximately 288.6 mph.

To convert the speed from kilometers per hour to feet per second, you need to go through two conversion steps.

First, convert kilometers per hour to meters per second by dividing by 3.6 (since there are 3.6 seconds in an hour).

Then, convert meters per second to feet per second by multiplying by 3.281 (since there are 3.281 feet in a meter).

By applying these conversion factors, the speed of 464.5 km/hr is approximately 678.2 ft/s.

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Answer:

3/2 R

Explanation:

Let the Mass of man be m, Mass of earth be M.

By Newtons, law of gravitation,

F = GMm/R^2, Where G is gravitational constant

90 = GMm/R^2

When man weighs 40N,

GMm/(New R)^2 = 40

= 4/9 (90)

GMm/(New R)^2 = 4/9 (GMm/R^2)

(New R)^2 = 9/4 R^2

New R = 3/2 R

Therefore, height is 3/2 R

Answer:

2. 1.85

Explanation:

the equations weight * distance / other persons weight = distance from fulcrum. so 66.4*2.35/84.2=1.8532 round down to 1.85

Answer:

Measurement

Explanation:

Scientific research require observation and there are two types of observations, quantitative and qualitative observation

Collecting quantifiable data that is possible to be expressed in a number format is said to be a quantitative observation

Quantitative observation can also be described as observations that are defined by both words and numbers and they are therefore more useful than qualitative observations that involve only words

Quantitative observations involve expressions of variables that are quantifiable, that is material hat can be expressed in numbers.

Answer:

Measurement

Explanation:

if you’re doing ck12 it’s the right answer

To determine the electric field strength at a given position, we need to know the electric field vector at that point. The electric field vector is defined as the force per unit charge experienced by a test charge placed at that point.

It can be expressed in terms of its x, y, and z components as follows:

E = Ex i^ + Ey j^ + Ez k^

where Ex, Ey, and Ez are the x, y, and z components of the electric field vector, respectively, and i^, j^, and k^ are the unit vectors in the x, y, and z directions, respectively.

To find the values of Ex, Ey, and Ez at the given position, we need to have more information about the electric field at that point, such as the charge distribution or the electric potential. Without that information, we cannot determine the electric field strength at that position. Therefore, I cannot provide a numerical answer to this question without more details.

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Answer:

I don't know this answer at all

Explanation:

I don't know about these problems

The frequency of the violet light is\(7.5 x 10^14 Hz (Hertz).\)

The frequency of the wave is determined by dividing the velocity of light by its wavelength.

\(v=f/λWhere:v = velocity of light f = frequency λ = wavelength of the light\)

The speed of light is\(3.00 x 10^8\) meters per second (m/s).

To convert 400 cm into meters, divide 400 by 100. 400 cm = 4 m

Therefore,λ = 4 meters

Plugging these values into the formula, \(v = (3.00 x 10^8 m/s) / (4 m) = 7.5 x 10^14 Hz\)

So, the frequency of the violet light with a wavelength of \(400 cm is 7.5 x 10^14 Hz.\)

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Answer:

A. Rotating Crops

Explanation:

Just took the test lets go

Based on the given options, the best method that helps to prevent wind erosion is rotating crops.

Erosion is the removal or washing away of the topmost layer of the earth by agebys of erosion.

The agents of erosion include wind, ice and water.

Wind erosion refers to erosion by wind.

Erosion by wind occurs mostly if the top layer of the eart is devoid of plants.

In order to prevent wind erosion, planting of cover crops and crop rotation is employed.

Therefore, of the given options, the best method that helps to prevent wind erosion is rotating crops.

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Answer:

The penguins are gliding foward without stopping because there is no external force changing their state.

Explanation:

Newtons first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

Answer:

CONNECTORS THAT BE ELECTRICAL AND CONNECT

Explanation:

IF YOU KNOW YOU KNOW HOW IT BE AND HOW IT IS AND WHY IT BE AND WHY IT IS

The lead block is moving at a speed of 1 m/s after the bullet rebounds off of it. The correct answer is (c) -5 m/s.  

First, we need to find the momentum of the bullet before it hits the block:

p_bullet = m_bullet * v_bullet = 50 * 500 = 25,000 g

We also need to find the momentum of the block before the bullet hits it:

p_block = m_block * v_block = 2 * 2000 = 4000 g

After the bullet hits the block, it rebounds with a speed of 300 m/s. The momentum of the bullet after the collision is:

p_bullet_after = m_bullet * v_bullet_after = 25,000 * 300 = 750,000 g

The momentum of the block after the collision is:

p_block_after = m_block * v_block_after = 4000 * 300 = 120,000 g

The momentum of the system (bullet + block) before the collision is:

p_system_before = p_bullet + p_block = 750,000 + 120,000 = 870,000 g

The momentum of the system after the collision is:

p_system_after = p_bullet_after + p_block_after = 750,000 + 120,000 = 870,000 g

We want to find the speed of the block after the collision, so we can set the total momentum of the system before and after the collision equal to each other:

p_system_before = p_system_after

870,000 g = 750,000 g + 120,000 g

870,000 g = 870,000 g

Dividing both sides by 870,000 g gives us:

v_after = 1

Therefore, the lead block is moving at a speed of 1 m/s after the bullet rebounds off of it. The correct answer is (c) -5 m/s.  

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Answer:

An archers bow that is drawn back

Answer:

A)a diver standing on a diving platform.

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