The diagram below shows TWO forces P and Q of magnitude 250 N and 150 N respectively acting at a point R 250 N 150 N Calculate the horizontal and vertical components of vector P​

The speed of the  Toyota Corolla would have  been 143.9 mph.

The acceleration of the F-15 can be calculated as follows:

Acceleration = Velocity Change / Time = (Take-off Speed) / Time

where;

Take-off Speed = √(2dg /t²)

Take-off Speed = √(2 x  (270 ft)  x 32.2 ft/s² / (2 s)²)

T  = √(17496) = 131.6 ft/s

Acceleration = Velocity Change / Time

= (131.6 ft/s) / (2 s) = 65.8 ft/s²

We can use the same acceleration to launch the Toyota Corolla, and calculate its final velocity:

Final Velocity = Initial Velocity + Acceleration x Time

where;

Final Velocity = 0 + (65.8 ft/s²) * (2 s) = 131.6 ft/s

Finally, we can convert the velocity from feet per second to miles per hour:

Velocity (mph) = Velocity (ft/s) x (1 hour/3600 s) x (5280 ft/mile)

= 131.6 ft/s x  (1 hour/3600 s)  x (5280 ft/mile)

= 143.9 mph

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a. Just Noticeable Difference (JND) refers to the smallest difference in stimuli that can be detected by a person. It is also known as the difference threshold. Weber's Law states that the JND is proportional to the magnitude of the stimulus.

In simpler terms, the JND is relative to the initial stimulus. For example, if you have a 10 kg weight and you add 1 kg, you will notice the difference. However, if you have a 100 kg weight and you add 1 kg, you may not notice the difference. Weber's Law helps us understand how our perception changes as the magnitude of the stimulus changes.

b. To suggest a discount using the principle of JND, we need to consider the income range and the prices of the pressure cooker. Let's assume the JND for families earning Rs. 10,000 per month is Rs. 200 and for families earning Rs. 15,000 per month is Rs. 300. Based on these values, we can calculate the discounts that would make them notice and be motivated to buy the pressure cooker.

For families earning Rs. 10,000 per month, the JND is Rs. 200. So, if we offer a discount of Rs. 200 on the 3 Litre pressure cooker priced at Rs. 1800, the new price would be Rs. 1600. This discount would be noticeable to them and may motivate them to purchase.

For families earning Rs. 15,000 per month, the JND is Rs. 300. So, if we offer a discount of Rs. 300 on the 5 Litre pressure cooker priced at Rs. 2400, the new price would be Rs. 2100. This discount would be noticeable to them and may encourage them to buy.

The justification for these discounts is that they are based on the JND principle, which ensures that the discounts are noticeable to the target audience. By offering discounts within their perception range, we can attract their attention and motivate them to make a purchase.

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Answer:

FALSE

Explanation:

You breath in oxygen and your blood takes it through your body then you breath it out as carbon dioxide

Answer:

c

Explanation:

Answer:

The convex lens is shaped so that all light rays that enter it parallel to its axis cross one another at a single point on the opposite side of the lens.

Explanation:

The mass near the equator is thrown outward by their quick rotation. In comparison to any terrestrial planet, the jovian planets rotate significantly more quickly.

A planet would be spherical due to gravity alone, but due to their rapid rotation, material around the equator is thrown outward, flattening out their spherical outlines. At some point, a part of this matter falls toward the center and forms a star, and the rotating cloud starts to flatten into a disk. Planets are created from this moving protoplanetary disk of gas and dust, leading to a comparatively flat solar system. Synchronous rotation is the name given to this kind of rotation. To find out more about synchronous rotation, click here. The small moons outnumber the big moons by a wide margin.

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Answer:

The trees are blocking the sunlight.

Explanation:

B is obviously not the answer because fertilizer wouldn't have that effect. For C, shade doesn't change the temperature that much that it would inhibit plant growth. For D, even if the tree blocks the water, the surrounding ground will still be wet and therefore the grass should still have a sufficient amount of water to grow.  Sunlight can't be gotten from somewhere else, unlike water, so this would inhibit plant growth.

Answer: Your using your skeletal muscle

Explanation:

Sulphur

The missing element is sulphur

Here the compound is composed of  element X and chlorine.

it is given,

XCl (6) ----> 6Cl

mass = 13.1%

it is X and Cl = 100%-13.10%

                     = 86.90%

chlorine = 86.90            

X = 13.10

We assume 100g of sample

so according to the above solved data, in 100g of sample we have 86.90 g of chlorine.

now we split that chlorine into two moles of chlorine.

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Answer:

Positive work is said to be done when the force acting on a body produces a displacement in the direction of the force. Negative work is said to be done when the force acting on a body produces a displacement opposite to the direction of the force

Explanation:

When the displacement of the body the in the direction of the force then the work done is positive. For example :- a man pushing a car in a straight path.

When the displacement is in a direction opposite to the direction of the force then the work done is said to be negative. For example :- work done by the friction.

The input resistance r(in) of the circuit is 54.53 kΩ

In the given circuit, the value of Rₐ = 9 kΩ and β = 70. Let's calculate the input resistance r(in) of the circuit.

The resistance of the circuit is given by;

Rc = Vcc / Icq = 15 / 2.4 = 6.25 kΩ

The transistor current gain is given by β = Ic / Ib,

Ic = βIb

Thus,

Ib = Ic / β

Ib = 2.4 / 70 = 0.034mA = 34µA

The resistance, Rb is given by

Rb = (Vcc - Vbe) / Ib, where Vbe is the base-emitter voltage of the transistor

Let us assume Vbe = 0.7 V, then

Rb = (15 - 0.7) / 0.034 mA

Rb = 418.82 kΩ

The input resistance of the circuit is given by r(in)

= β * (Rc + Ra) || Rb

r(in) = 70 * (6.25kΩ + 9kΩ) || 418.82kΩ

r(in) = 6486.27 / 119

r(in) = 54.53 kΩ

The input resistance r(in) of the circuit is 54.53 kΩ.

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The form of heat transfer that doesn't depend on a medium is (B) radiation.

Radiation is the form of heat transfer that doesn't require a medium. It involves the emission of electromagnetic waves, such as infrared radiation, from a warm object to its surroundings.

Unlike conduction and convection, which require a medium (such as a solid, liquid, or gas) to transfer heat, radiation can occur in a vacuum or through empty space. This is because electromagnetic waves can travel through the vacuum without the need for a physical medium.

Conduction involves the transfer of heat through direct contact between objects or particles within a substance, while convection involves the transfer of heat through the movement of a fluid (liquid or gas).

Both conduction and convection require a medium for heat transfer, unlike radiation, which can occur independently of a medium.

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Answer:

Explanation. analysis, inference, and evaluation.help you to solve your problem as well as by using it you can develop scientific and critical thinking skills among students

It is possible to include a person of another culture in physical activity by performing a leveling tasks, learning more, listening and attending to new material.

The expression 'inclusion in sports' refers to the specific tasks and procedures aimed at incorporating more persons into a sport-based group.

Physical activity intrinsically includes persons of different cultural backgrounds through a universal language (i.e., sports).

In conclusion, it is possible to include a person of another culture in physical activity by performing a leveling tasks, learning more, listening and attending to new material.

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Answer:

1. Lower the level of intensity. If the person or the people you are playing with are not comfortable with certain physical lengths like running long distances, you can shorten the intensity so they’re more comfortable playing and have fun!2. Adjust the playing area to everyone’s liking. If you and your group play at a place where some cannot access, like a gym that needs a membership that some can’t buy, you can replan where to meet up and play so no one is left out.3. Answer all questions the people have about the game. If everyone has a good understanding on how to play, it’ll be more enjoyable instead of someone getting frustrated because they don’t understand the concept of the game.4. Be patient with those just figuring out how to play. Lets say a new student from out of the country has no idea how to play the game and needs a lot of help, but you and the others who are used to the game get angry because the student is taking away your game time. Try to help the student understand so everyone can play together happily instead of instantly kicking them out of the group just because they don’t know how to play or are not good at the game.

Explanation:

The equivalent power of coal transported in a mile long train containing 120 cars, each holding 110 tons of coal travelling at 60 mph is 6.04 * 10e12 J

P = E / t

P = Power

E = Energy

t = Time

Distance of train = 1 mile

Number of cars in the train = 120

Tons of coal in 1 car = 110 tons

Velocity of train = 60 mph

Energy of one ton coal = 2.8×10e10 J

Total coal = 120 * 110

Total coal = 13200 tons

Total energy of coal = 13200 * 2.8×10e10

Total energy of coal = 369.6 * 10e12 J

v = d / t

v = Velocity

d = Distance

t = Time

t = d / v

t = 1 / 60

t = 0.017 h

t = 61.2 s

P = ( 369.6 * 10e12 ) / 61.2

P = 6.04 * 10e12 J

P = 6.04 pJ

Therefore, the equivalent power of coal is 6.04 * 10e12 J

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Answer:

1 kilogram meter per second squared?

Answer:

mass=0.50kg

force=25N

acceleration =?

Now,

force=m×a

25=0.50×a

25÷0.50=a

50=a

acceleration =50m/s^2 answer!!!!

hope this may help you!!!!

Answer:

The answer is 50 m/s squared.

Explanation:

A=M/F

A= 25 Newtons

     ------------------  (DIVIDED BY)

      0.5 Kilograms

A= 50 m/s squared

Answer:

300

Explanation:

i answered it and got it right

The glass cylinder will exhibit the largest change in volume when external pressure is applied to it.

The amount of volume change that occurs in a cylinder when an external pressure is applied is determined by its bulk modulus. The bulk modulus is a measure of how much a material's volume can change when subjected to external forces such as pressure.

Using the given values for the bulk moduli of each material, we can compare which cylinder will exhibit the largest change in volume when subjected to external pressure.

The formula for the change in volume of a cylinder under external pressure is:

ΔV/V = -BΔP

where:

ΔV is the change in volume

V is the original volume

B is the bulk modulus

ΔP is the change in pressure

We can simplify this formula by dividing both sides by V and rearranging:

ΔV = -BVΔP

So, the material with the highest bulk modulus will exhibit the largest change in volume when subjected to the same external pressure.

From the given values, we see that glass has the highest bulk modulus (70 x 10^9 N/m^2) while brass and aluminum have bulk moduli of 70 x 10^9 N/m^2 and 76.8 x 10^9 N/m^2, respectively.

Therefore, the glass cylinder will exhibit the largest change in volume when external pressure is applied to it.

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The teammate needs to run at a speed of approximately 13.8 m/s to catch the ball without accelerating. (a) The speed while going up the trail is 1.33 mi/hr. (b) Total average velocity, in (mi/hr) for the entire hike is 2.67 mi/hr.

When the football is thrown, it has an initial velocity of 15 m/s at an angle of 23 degrees with respect to the horizontal. To catch the ball at the same height without accelerating, the teammate needs to match the horizontal component of the football's velocity. The horizontal component of the velocity can be calculated using trigonometry.

The horizontal velocity is given by

\(Vx = V * cos(\theta)\),

where V is the initial velocity of the football and \(\theta\) is the angle of projection. Substituting the given values,

\(Vx = 15 m/s * cos(23^0)\).

The teammate's speed must be equal to this horizontal velocity, so the teammate needs to run at a speed of approximately 13.8 m/s to catch the ball without accelerating.

For the second scenario, the total distance covered for the hike is 4 miles (2 miles up + 2 miles down). The time taken to go down the trail is given as 1.5 hours. Need to calculate the speed while going up the trail and the total average velocity for the entire hike.

(a) For calculating the speed while going up the trail, use the formula:

Speed = Distance / Time.

The distance covered while going up the trail is 2 miles. The time taken to go down the trail (1.5 hours) is the total time for the hike. So, the speed while going up the trail is:

2 miles / 1.5 hours = 1.33 mi/hr.

(b) The total average velocity for the entire hike can be calculated using the formula:

Average Velocity = Total Distance / Total Time.

The total distance covered is 4 miles, and the total time taken is 1.5 hours. So, the total average velocity for the entire hike is:

4 miles / 1.5 hours = 2.67 mi/hr.

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Answer:

The initial momentum of the bowling ball is 20 kgm/s.

Explanation:

Given;

mass of the bowling ball, m₁ = 5.0 kg

initial velocity of the bowling ball, u₁ = 4.0 m/s

mass of the Frodo, m₂ = 60 kg

initial velocity of Frodo, u₂ = 0

The initial momentum of the bowling ball is calculated as;

P = m₁u₁

P = 5 x 4

P = 20 kgm/s

Therefore, the initial momentum of the bowling ball is 20 kgm/s.

Among H2S, KCl, and CO2, all three substances can dissolve in water to some extent, but they differ in their solubility levels. H2S (hydrogen sulfide) is a polar molecule that can dissolve in water, forming a weak acidic solution.

This is due to the partial negative charge on the sulfur atom and partial positive charges on the hydrogen atoms, which allow the formation of hydrogen bonds with water molecules. KCl (potassium chloride) is an ionic compound that dissolves readily in water. The positive potassium ions (K+) and negative chloride ions (Cl-) are attracted to the partial negative and positive charges of the water molecules, respectively. This strong interaction leads to the dissociation of KCl into its individual ions, resulting in a clear, aqueous solution.

CO2 (carbon dioxide) is a nonpolar molecule with limited solubility in water. When dissolved, it reacts with water to form a weak acid called carbonic acid (H2CO3). This reaction is reversible, meaning some CO2 molecules will remain dissolved without forming carbonic acid. In summary, all three substances, H2S, KCl, and CO2, can dissolve in water. However, KCl is the most soluble due to its ionic nature, while H2S and CO2 exhibit lower solubility as they form weak acids in aqueous solutions.

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The current flowing in each circuit arrangement depends on the total resistance of the circuit.

To calculate the total resistance of each circuit, we can use the formula:

Total Resistance = R1 + R2 + R3

a. To create a current of 1 ampere, we can use the following circuit:

  (check image 1)

b.  To create a current of 2 amperes, we can use the following circuit:

(check image 2)

The total resistance of this circuit is:

1 ohm + 2 ohm + 1 ohm = 4 ohms

Using Ohm's Law, we can calculate the voltage required to create a current of 2 amperes:

V = IR

V = 2A x 4 ohm = 8V

Therefore, we need to connect three batteries in series to create a voltage of 4.5V, and another three batteries in series to create a voltage of 4.5V, and connect both sets of batteries in parallel to create a voltage of 9V.

c. To create a current of 3 amperes, we can use the following circuit:

(check image 3)

The total resistance of this circuit is:

1 ohm + 1 ohm + 1 ohm = 3 ohms

Using Ohm's Law, we can calculate the voltage required to create a current of 3 amperes:

V = IR

V = 3A x 3 ohm = 9V

Therefore, we need to connect all four batteries in series to create a voltage of 6V, and then connect two sets of these batteries in parallel to create a voltage of 12V.

d. To create a current of 6 amperes, we cannot use these components as they will create a circuit with a total resistance of less than 0.25 ohms, which will exceed the maximum current that can flow through the components and may damage them. In order to create a circuit with a higher resistance that can handle a current of 6 amperes, we would need to add additional resistors in series with the bulbs.

For example, we could add a 1 ohm resistor in series with the 3 ohm bulb to create a circuit with a total resistance of 7 ohms:

(check image 4)

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Answer:

Covalent bond.

Explanation:

There are 4 main types of bonds:

Covalent, ionic, metallic, and hydrogen.

Covalent bond: Involves the sharing of pairs of electrons, here the difference between the electronegativity of the atoms is not too large. Covalent bonds usually form an octet of electrons.

Ionic bond: This happens because the electrostatic attraction between the atoms whit very different electronegativities

Hydrogen bond: Electrostatic attractive force between an electronegative atom and a hydrogen atom covalently bonded to another electronegative atom.

Metallic bond: Type of bond that makes the metallic atoms to stay really tightly together. The atoms bond because of the electrostatic atractive force between conduction electrons and positively charged metal ions.

Now, in this case, we have the bond between Nitrogen (electronegativity = 2.0) and Hydrogen (electronegativity = 2.1)

So we can see that:

The elements are not metals, so we can discard metallic bond.

For a hydrogen bond, we need 3 atoms (one of which is hydrogen), here we have two, so we can discard this option.

Ionic bond needs different electronegativities, here the electronegativities are really close together, so the ionic bond can be discarded.

we can conclude that the bond will be a covalent bond.

Answer:

electromagnetic radiation

Answer: A gram of gold is worth about $25, so 2 grams or better would be viewed as high-grade for bulk tonnage mining.

Explanation:

i looked it up.

Electromagnetic radiation can be modeled as both a wave and a particle because it can exhibit both light and wave properties.

Wave-particle duality is a property of matter that explains the behavior of matter as a particle and as a wave.

Electromagnetic radiation can be modeled as both a wave and a particle because it can transfer energy during its propagation and can also be reflected as light.

In summary, electromagnetic radiation can exhibit both light and wave properties.

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Answer:

Electromagnetic radiation can be modeled as both a wave and a particle because it can exhibit both light and wave properties.

Explanation: