If you get this correct I will give a lot of points and possibly brainliest.
MOON : MOONBOW :: _____ : RAINBOW
A. Rain
B. The sun
C. Sky
D. Earth

Answer:

False.

Explanation:

Potential of Hydrogen is the full form of PH.

Potential of Hydrogen tells about the acidity or basicity of the solution.

The pH of a solution is a measure of the concentration of hydrogen ions \((H+)\) ions and hydroxide ions \((OH-)\) in a solution.

So, the given statement is false.

The true statement according to Newton's laws of motion is; "there is no net force on the block during the 2nd second as zero net force keeps the motion constant."

According to the Newton first law of motion, an object will continue in its state of rest or uniform motion unless it is acted upon by a net force. The action of a net force leads to an acceleration.

In the 2nd second of the journey, there is no net force on the block hence the block continues to move at constant velocity.

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A wave is a form of energy transfer that travels through a medium without causing a net displacement of the particles in the medium. Mechanical waves, which require a medium, have characteristics such as amplitude, wavelength, frequency, and speed. A sine wave is a specific type of wave that follows a mathematical function called the sine function. It is represented by the equation y = A sin (ωt + φ).

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The pressure of the gas in the cylinder is approximately 0.6894 kPa.

To determine the pressure of the gas in the cylinder, we can use the equation for pressure due to a fluid column:

P = ρgh

Where:

P is the pressure

ρ is the density of the fluid

g is the acceleration due to gravity

h is the height of the fluid column

Given:

h = 0.506 m

ρmercury = 13,600 kg/m^3

g = 10.0 m/s^2

Substituting the values into the equation:

P = (13,600 kg/m^3) * (10.0 m/s^2) * (0.506 m)

P ≈ 68,936 Pa

Since 1.0 atm is equal to 1.00 × 10^5 Pa or 100 kPa, we can convert the pressure to kPa:

P ≈ 68,936 Pa * (1 atm / 1.00 × 10^5 Pa) * (100 kPa / 1 atm)

P ≈ 0.6894 kPa

Therefore, the pressure of the gas in the cylinder is approximately 0.6894 kPa.

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Answer:

1.F = 256 N

2.a = 8 m/s/s

By looking at the given information, you know force, and an acceleration. Therefore you have enough information to use the first formula.

F = ma

256 N = m * 8 m/s/s

m = 256 N/8 m/s/s

m = 32 Kg

Answer:

stress tension tensile strength

Explanation:

The maximum stress which a material can withstand when it is pulled apart is its: stress tension tensile strength.

Answer:

a unit of mass or weight equaling one thousand grams

Hydrogen has relatively weak spectral lines, while calcium, which is not abundant, has very strong spectral lines because hydrogen is a comparatively lighter element, whereas calcium is much heavier than hydrogen.

In the sun's atmosphere, hydrogen is more prevalent and spread over a larger area, while calcium is less frequent, making it more concentrated, and hence they have more intense spectral lines.Spectral lines are unique to every element, and their patterns are utilized to identify elements present in any given compound. The intensity of spectral lines is determined by the concentration of the element. The more concentrated the element, the more intense its spectral lines will be.

Calcium has a more massive atomic structure than hydrogen, which explains why its spectral lines are more concentrated than hydrogen's. As a result, hydrogen's spectral lines are more dispersed, making them weaker in contrast. Thus, hydrogen, which is abundant in the sun's atmosphere, has relatively weak spectral lines, while calcium, which is not abundant, has very strong spectral lines.

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Answer:

If a net force acting on a moving object causes its speed to decrease, what

happens to the object's momentum?

-It decreases.

Hope it helps you

Please Mark me the BRAINLIEST

Answer:

100,000 to 200,000 years to cross the milky way.

Explanation:

The magnetic field at point P is approximately 2.13 × \(10^{-5}\) T.

To calculate the magnetic field at point P, we need to use the right-hand rule. This rule states that if you point your right thumb in the direction of the current flow (to the right in this case), your fingers curl in the direction of the magnetic field lines.

Using this rule, we can see that the magnetic field lines will form concentric circles around the wire. The strength of the magnetic field is given by the equation B = μ0I/(2πr), where μ0 is the permeability of free space (4π ×  \(10^{-7}\) T·m/A), I is the current, and r is the distance from the wire.

Substituting the given values, we get B = (4π × \(10^{-7}\) T·m/A)(102 mA)/(2π(2.4 ×  \(10^{-3}\)m)) ≈ 2.13 ×  \(10^{-5}\) T.

Therefore, ignoring any external fields, the magnetic field at point P is approximately 2.13 ×  \(10^{-5}\) T.

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Answer:

200 m/s

Explanation:

v = distance / time = 50km/250s = 50000m/250s = 200 m/s

Answer:

15m/s

Explanation:

500 ÷ 50 = 10m/s

1500 ÷ 75 = 20m/s

10 + 20 = 30

30 ÷ 2 = 15m/s

Answer: 16 miles per second

Explanation:

Find the total distance traveled and the total time.

\(\text{average rate}=\dfrac{1500+500}{75+50}=\dfrac{2000\ miles}{125\ second}=\large\boxed{16\ mps}\)

Answer:False.

Explanation: HIV is a viruse that only shows symptoms after a few weeks. in Fact HIV does not show any physical symptoms. So, no you can not tell if someone has or is been infected by HIV by directly looking at them.

Have a Nice Day!!! =)

Answer:

Renewable sources are better because they don't damage the environment. As of now, there is a r=lot of damage already done to the environment thanks to non-renewable resources, and soon a lot of this damage will be irreversible. Another good thing about renewable resources is that that it is unlimited, this means that it is a steady source of energy and items.

Non renewable resources are good for the economy. People are so used to using non renewable resources that they might not want to switch over to renewable resources. People will keep buying these product so it is a steady item to invest in and profit off of. Non renewable resources also have a lot  more research on them and people have found multiple different ways to utilize it so people might like it more.

Momentum in sport is a common activity which involves the the quantity of motion of a moving body and it is a function of a product of its mass and velocity.

In a football field for instance, the players need a level of moment to be able to win the match

Derived quantities can simply be defined as those quantities which are derived from fundamental quantities either by by addition, multiplication or division

So therefore, momentum is the product of mass and velocity and it is a derived quantity

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Answer:the distance it travels in each second is decreasing

Explanation:

Analytical maps can be created to depict historical ownership, paved areas for cars, parks, natural amenities, and community street design. Streets, being public spaces, require measurement to determine their intended beneficiaries.

Analytical maps offer a valuable tool for visualizing and understanding various aspects of urban planning. By creating maps that showcase historical ownership patterns, paved areas designated for cars, locations of parks and natural amenities, and community street design, it becomes easier to assess the distribution of resources and infrastructure within a city.

In this context, streets hold a significant role as public spaces. They are not solely meant for vehicular traffic but should also prioritize the needs and activities of pedestrians, cyclists, and the wider community. Analyzing street design through mapping can help evaluate whether streets are primarily designed to cater to cars or if they accommodate a balanced and inclusive approach that considers the needs of all users.

To achieve equitable urban environments, it is crucial to assess the intended beneficiaries of street design and identify any discrepancies or biases in the allocation of public space. By utilizing analytical maps, planners, policymakers, and communities can have a clearer understanding of the current state of street design and work towards creating more people-centric and sustainable cities.

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Answer:

Explanation:

14

Answer:

They were pleased by the news. (passive voice)

The news pleased them. (active voice)

Answer:

See below

Explanation:

Weight/mass of the object is irrelevant ( not needed)

v = at

  = 9.81 m/s^2   * 1 s =   9.8 m/s

Answer: b. The combination is a mixture because the substances can be separated

Explanation: Based on the facts presented above, the combination of both both substances can be referred to as a mixture due to the following:

A mixture is obtained when two or more substances or materials are combined without a chemical reaction. This is observed when Jalen combined substance 1 and 2 with only one of the substances becoming visible after the combination.

The other reason is that, a mixture can be separated back into its original constituent, this is evident when the combination was filtered with only substance 2 going through the filter and substance 1 remaining in the filter

a) Equivalent weight of CaCO3 = Molar mass / Number of equivalents = 100.09 g/mol / 1 = 100.09 g/mol.

b) The yield of 18 kg per hectare is equivalent to 39.682 pounds per hectare.

a. To calculate the equivalent weight of CaCO3, we need to determine its molar mass and the number of equivalents of the compound.

The molar mass of CaCO3 is:

Ca: 40.08 g/mol

C: 12.01 g/mol

O: 16.00 g/mol (3 oxygen atoms in CaCO3)

Molar mass of CaCO3 = (40.08 g/mol) + (12.01 g/mol) + (16.00 g/mol × 3) = 100.09 g/mol

The equivalent weight is calculated by dividing the molar mass by the number of equivalents. In the case of CaCO3, it is assumed to be a monoprotic acid with one equivalent per mole.

Equivalent weight of CaCO3 = Molar mass / Number of equivalents = 100.09 g/mol / 1 = 100.09 g/mol

b. The equivalent weight of Na+ can be calculated using its molar mass and the number of equivalents.

The molar mass of Na+ is 23 grams per mole. Since Na+ carries a charge of +1, it is also equivalent to its molar mass.

Equivalent weight of Na+ = 23 g/mol

To convert the yield from kilograms per hectare to pounds per hectare, we need to use the conversion factor 1 kilogram (kg) = 2.20462 pounds (lbs).

If the yield is 18 kg per hectare, we can calculate the equivalent value in pounds per hectare:

18 kg * 2.20462 lbs/kg = 39.682 lb

Therefore, the yield of 18 kg per hectare is equivalent to 39.682 pounds per hectare.

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Answer:

This statement is not true

Explanation:

Because The normal magnetic field line points out from the north magnetic pole and in from the south magnetic pole.

Answer:

false

Explanation:

hope this helps :)

Answer:

10g to kg=0.01

20×0.01=0.2

Force of 0.2N

(6) The angular speed of the blade is 293.2 rad/s.

(7) The linear speed of the tips of the blades in miles per hour is 305.4  mph.

(8) The linear speed of the tips of the blades in feet per second is 8.71 ft/s.

(9) The linear speed in miles per hour in which he is traveling is 10.78 mph.

(6) The angular speed of the blade is calculated as follows;

Diameter of the blade = 9 inches, radius = 4.5 inches

angular distance of the blade = 2800 rev/min

ω = 2800 rev/min  x 2π rad/rev  x  1 min / 60s

ω = 293.2 rad/s

(7) The linear speed of the tips of the blades in miles per hour is calculated as;

v = ωr

the angular speed, ω = 5 rev/s  x 2π rad/rev = 31.42 rad/s

r = 14 ft = 0.0027 mile

the linear speed, v = 31.42 rad/s  x 0.0027  mile = 0.085 mi/s

= 0.085 mi/s x 3600 s / hr = 305.4  mph

(8) The linear speed of the tips of the blades in feet per second is calculated as;

r = 25 inch = 2.08 ft

ω = 40 rev/min  x  2π rad/rev  x 1 min / 60s = 4.19 rad/s

the linear speed = v = 4.19 rad/s x 2.08ft = 8.71 ft/s

(9) The linear speed in miles per hour in which he is traveling is calculated as;

Diameter = 28 inches, radius = 14 inches

14 inches = 0.00022 mile

ω = 130 rev/min  x  2π rad/rev   x   60 min/1 hr = 49,008.85 rad/hr

the linear speed, v = 49,008.85 rad/hr x  0.00022 mile = 10.78 mph

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Answer:

making sure that you change one factor at a time while keeping all other conditions the same

Explanation:

Answer:

You can create a fair test by making sure that you change one factor at a time while keeping all other conditions the same. Thats how you can create  a fair test.

Explanation:

Hope it helps! Have a great day!

Lilac~