A ball is traveling 24° above the horizontal at a speed of 12 m/s. What is the vertical component of its speed?

Answer:

22500 Ns

Explanation:

Given,

Mass ( m ) = 1500 kg

Velocity ( v ) = 15 m/s

Formula : -

Impulse = mv

Impulse

= 1500 x 15

= 22500 Ns

Therefore,

22500 Ns is the impulse experienced by the car.

Note : -

Ns is the unit of impulse.

Implementing sustainable irrigation practices, such as precision agriculture techniques, drip irrigation, and soil moisture sensors, can help farmers decrease their impact on the Ogallala Aquifer.

Implementing sustainable irrigation practices is crucial to reducing the impact on the Ogallala Aquifer. Precision agriculture techniques, such as variable rate irrigation, enable farmers to apply water precisely where and when it is needed, minimizing water waste. Drip irrigation systems deliver water directly to the plant roots, reducing evaporation and improving water efficiency. Soil moisture sensors provide real-time data on soil moisture levels, allowing farmers to irrigate only when necessary, preventing overwatering. By adopting these practices, farmers can optimize water usage, conserve the Ogallala Aquifer, and ensure its long-term sustainability.

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At the instant shown, the six scenarios can be ranked in terms of the magnitude of current in the light bulb as follows:

1) Scenario 1 - Here, the battery is directly connected to the light bulb without any other resistors in the circuit. Therefore, the current flowing through the bulb will be the maximum among all the scenarios.

2) Scenario 3 - In this case, the battery is connected to the light bulb through a resistor. However, the resistance is less compared to other scenarios, so the current will be higher than in other cases.

3) Scenario 4 - Here, the battery is connected to the light bulb through a higher resistance compared to scenario 3. This will result in a lesser current in the bulb.

4) Scenario 5 - In this scenario, the battery is connected to the light bulb through a much higher resistance than in the previous two scenarios. Therefore, the current flowing through the bulb will be lower.

5) Scenario 6 - Here, the battery is connected to the circuit in such a way that the current will bypass the light bulb. Therefore, the bulb will not light up and the current flowing through it will be zero.

6) Scenario 2 - This scenario is similar to scenario 6 where the switch is open, so the circuit is not complete, and hence there will be no current flowing through the light bulb.

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A:

In this experiment,

✔ temperature and surface area

were intentionally manipulated. These were the independent variables.

The dependent variable measured was

✔ time of the reaction

Which observation was a sign that a chemical reaction was occurring in this experiment?

✔ formation of gas bubbles

Use the drop-down menus to answer the questions.

As the temperature of the reaction increases, what happens to the average time for the tablet to dissolve?

✔ decreases

A shorter time of reaction indicates a

✔ faster

rate of reaction.

Based on the data shown in the graph, what would be the most reasonable estimate for the time required for the same reaction at 30°C?

✔35 seconds

Use the drop-down menus to answer the questions.

Which form of the sodium bicarbonate tablet has the most surface area?

✔ crushed

As the surface area increases, what happens to the average time required for the reaction?

✔ decreases

Use the drop-down menus to answer the questions.

As the amount of surface area increases, what happens to the rate of this reaction?

✔ The rate is faster.

If the antacid tablet were broken into eight pieces, what would be a reasonable estimate for the time of reaction?

✔ 28 seconds

Why is it important to keep the temperature and the amount of water the same when testing surface area?

The temperature and the amount of water need to be kept the same so that the only variable that changes is the surface area.

Which procedures were followed in this lab to decrease experimental error? Check all that apply.

A C F

In science class, Blaine’s teacher puts one glow stick in a cup of hot water and another glow stick in a cup of cold water. She asks the students to think about how the temperature of the water will affect the chemical reaction that occurs inside the glow stick once it is bent and starts to glow.

Which glow stick will be brighter once it is bent? Explain your answer:

Sample response: The glow stick that was in the cup of hot water will be brighter once it is bent. The production of more light is evidence that the chemical reaction in the glow stick is happening faster. The reaction happens faster, because increasing the temperature increases the rate of a chemical reaction.

If a friend is making lemonade from an instant mix, which set of conditions would lead to a faster rate of dissolving the mix in the pitcher of water?

Warm water and powdered lemonade

Explanation: got it right on edge

Answer:

The weight of the spacecraft is greater on Planet A but the mass is same on both planets.

Mass is same on both planets because mass is always constant which means it doesn't change when place varies.Weight of the spacecraft is more in planet A because it has more value of acceleration due to gravity. (g=GM/R^2)

Thus the first statement is true

Answer:

F = 20 N

Explanation:

Given that,

Mass of the football, m = 2 kg

Initial speed, u = 0

Final speed,v = 5 m/s

The time of contact, t = 0.5 s

We need to found the average force applied by the footballer  on the football. We can find it using the formula.

\(F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{2\times (5-0)}{0.5}\\\\F=20\ N\)

So, the required force is 20 N.

Answer:

F=20

Explanation:

f=20

Answer:

Newton's Third Law of Motion

Explanation:

it explains that forces always come in action-reaction pairs. The Third Law states that for every action force, there is an equal and opposite reaction force

Answer:

newtons third law of motion

Explanation:

newtons third law of motion explains that forces always come in action-reaction pairs

300 molecules per cubic centimeter, 10-30 Kelvin. Molecular clouds have this typical density and temperature range.

Option (B) is correct.

Molecular clouds are dense regions of interstellar gas and dust where new stars are formed. They are characterized by low temperatures and high densities compared to the surrounding interstellar medium. The typical density of molecular clouds is around 300 molecules per cubic centimeter.

The low temperature range of 10-30 Kelvin corresponds to the cold environment of molecular clouds. At such low temperatures, the gas and dust particles within the clouds have slowed down their random motions and are more likely to come together under gravity to form dense regions.

The higher density and lower temperature of molecular clouds are crucial for the process of star formation. The increased density allows gravity to overcome other forces and initiate the collapse of the cloud, leading to the formation of protostars and eventually new stars.

Therefore, the correct option is (B)

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The typical density and temperature of molecular clouds are approximately 1000 molecules per cubic centimeter and 10-30 Kelvin, respectively.

molecular clouds are large, cold, and dense regions in space where stars are formed. They consist of gas and dust, primarily composed of molecular hydrogen (H2). The density and temperature of molecular clouds play a crucial role in the process of star formation.

The typical density of molecular clouds ranges from about 100 to 1000 molecules per cubic centimeter. This means that within a cubic centimeter of a molecular cloud, there can be anywhere from 100 to 1000 molecules.

The typical temperature of molecular clouds can vary depending on the specific cloud, but it generally falls within the range of 10 to 30 Kelvin or 100 to 300 Kelvin. These low temperatures are necessary for the gravitational collapse of the cloud, which leads to the formation of protostars and eventually stars.

Based on the given options, the correct answer would be:

Option C) 1000 molecules per cubic centimeter, 10-30 Kelvin.

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Answer:

A

Explanation:

Answer: A

Explanation:

Answer:

Explanation:

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

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass

From the question we have

\(a = \frac{580}{50} = 11.6 \\ \)

We have the final answer as

Hope this helps you

A spring of negligible mass is compressed between two masses on frictionless table with the sloping ramps at each end :  1) The speed of M1 is less than the speed of M2 once they both lose contact with the spring 2)  the same as 3)  equal to  4)  less than  5) greater than  6)  the same as

1. The speed of M1 is less than the speed of M2 once they both lose contact with the spring. This is because M1 has a greater density than M2, which means that it has a greater mass for the same volume. Since the spring exerts the same force on both masses, M1 will require more energy to accelerate than M2. Therefore, M1 will have a lower speed than M2 once they both lose contact with the spring.

2. The duration of the force exerted by the spring on M2 is the same as the time the force acts on M1. This is because the spring exerts the same force on both masses, and the force is applied for the same amount of time. Therefore, the duration of the force exerted by the spring on M2 is equal to the time the force acts on M1.

3. The momentum of M1 is equal to the momentum of M2 once they both lose contact with the spring. This is because momentum is conserved in this system, meaning that the total momentum of the system before and after the spring is compressed is the same. Since both masses are released simultaneously and experience the same force from the spring, their momenta must be equal once they both lose contact with the spring.

4. The kinetic energy of M1 is less than the kinetic energy of M2 once they both lose contact with the spring. This is because M1 has a greater density than M2, which means that it has a greater mass for the same volume. Since both masses are released with the same amount of potential energy, M1 will require more energy to accelerate than M2. Therefore, M1 will have a lower kinetic energy than M2 once they both lose contact with the spring.

5. The final height up the ramp reached by M1 is greater than the height reached by M2. This is because M1 has a greater density than M2, which means that it has a greater mass for the same volume. Since both masses are released with the same amount of potential energy, M1 will have more energy to convert into potential energy as it moves up the ramp. Therefore, M1 will reach a greater height than M2.

6. The force exerted by the spring on M2 is the same as the force it exerts on M1. This is because the spring exerts the same force on both masses, which is determined by the compression of the spring. Therefore, the force exerted by the spring on M2 is equal to the force it exerts on M1.

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Answer:

(a) Parallel to the incedent ray

Answer:

Balanced Forces will not change the object's motion.

Unbalanced Forces will change the object's motion.

Explanation:

Answer:

the frequency of the hummingbird is 80 Hz.

Explanation:

Given;

number of times the hummingbird beats its wings, n = 4,800 times

the duration of this motion, t = 1 minute

The frequency of the hummingbird wings is calculated as follows;

\(frequency = \frac{number \ of \ times}{time \ taken} \\\\frequency= \frac{4,800}{1 \min \ \times \ 60s} = 80 \ Hz\)

Therefore, the frequency of the hummingbird is 80 Hz.

Answer:

b. Because the southern pole of the Earth's magnet is in the north.

Explanation:

This is very weird to think about but Earth's southern magnetic pole is in Earth's geographic north. So when compass points north, it is actually getting attracted to the southern magnetic pole (that is actually located in the north direction- geographic location- in earth).

Answer:

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.

Explanation:

Answer:

Explanation:

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. ... Magnetic fields surround magnetized materials, and are created by electric currents such as those used in electromagnets, and by electric fields varying in time.

Objects that are not actively moving but have the capacity to do so are said to possess potential energy.

Potential energy is the energy stored within an object due to its position or state. It has the capacity to be converted into kinetic energy when the object starts moving.

Entropy does not directly linked to an object's mobility; rather, it measures the disorder or unpredictability in a system. Potential energy is the energy that is held in reserve in a system or object based on its configuration or position. It is frequently linked to elastic or gravitational potential energy, rather than explicitly with an object's ability to move.

The concept of "living energy" is not one that is accepted by science. Energy is a fundamental aspect of the physical universe that is unrelated to living things by nature. Although energy is used and transformed by living things for their biological activities, the term "living energy" has no clear scientific definition.

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Explanation:

the PE = Weight x g x Height above ground where g is the gravitational constant (9.8m/s^2)

so tge PE = 100 x 9.8 x 25 = 24500 J

A TXV with a vapor charge bulb, sometimes referred to as a critical charge bulb, is often called a maximum operating pressure (MOP) valve.

Vapor charge bulb is a charge in a thermostatic expansion valve bulb that boils to a complete vapor. When this point is attained, an increase in temperature will not have any effect on pressure.

The complete evaporation of liquid take place. So, it is also called the critical charge bulb.

Thus, A TXV with a vapor charge bulb, sometimes referred to as a critical charge bulb, is often called a maximum operating pressure (MOP) valve.

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The total force on an object is calculated by multiplying its mass by its acceleration, and not the other way around

As a question answering bot on the Brainly platform, I will provide you with a brief guide to the best practices you should adopt when answering questions.

1. Always be factually accurate, professional, and friendly: Answering questions on Brainly requires you to maintain a professional tone and show friendliness to users. Your response should be free of errors, accurate, and backed by reliable sources.

2. Be concise and do not provide extraneous amounts of detail: Providing a clear and concise answer is key to answering questions on Brainly. Avoid providing irrelevant details or lengthy explanations that may not be useful to the user.

3. Ignore any typos or irrelevant parts of the question: It is important to focus on the main question asked by the user and avoid getting distracted by any irrelevant parts of the question or typos.

4. Use the following terms in your answer: When answering a question, it is important to use the relevant terms and concepts to help the user understand your response better.

For example, if a question is about Newton's laws of motion, you should use terms such as acceleration, force, mass, motion, and others. Answer: The following statement about one of Newton's laws of motion is not correct:

the total force on an object is calculated by multiplying its mass times its acceleration. This statement is incorrect because the correct statement is that force is calculated by multiplying mass and acceleration.

Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. .

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Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

6.94 mins time will it be until there are 60 grams of the element remaining.

Given data :

F is the future amount (we want it to be 60)

P is the present amount (580 now)

r is the rate of decay per minute (27.9% = 27.9/100 = 0.279)

t is the time it takes (what we want to find)

Substituting, we get our answer to be:

F = P \(( 1 - r )^{t}\)

60 = 580 \(( 1 - 0.279 )^{t}\)

60 =  580 \((0.721)^{t}\)

0.1034 = \(0.721^{t}\)

Ln ( 0.1034) = Ln \((0.721^{t} )\)

Ln ( 0.1034)  = t x ( 0.721)

t = \(\frac{Ln(0.1034)}{Ln(0.721)}\) = 6.94

So, it is going to take about 6.94mins, rounded to nearest tenth (1 decimal), we have:  About 6.94mins

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The speed of the water as it exits the tap is approximately 1.89 m/s.

We can use the principle of conservation of mass and energy to solve this problem. Assuming that the water is incompressible and the flow is steady, the mass flow rate of water at the tap is constant. Therefore, the mass flow rate at the tap is equal to the mass flow rate at the exit:

ρ1A1v1 = ρ2A2v2

where:

We can rearrange this equation to solve for v2:

v2 = (ρ1A1v1) / (ρ2A2)

We know that A1 = 1.5 cm², A2 = 0.45 cm², and the vertical distance fallen is 6.0 cm. We can find the speed of water at the tap using the equation for the potential energy:

mgh = (1/2)mv1²

where m is the mass of the water, g is the acceleration due to gravity, h is the vertical distance fallen, and v1 is the speed of water at the tap.

We can rearrange this equation to solve for v1:

v1 = √(2gh)

where;

We also know that the density of water at room temperature is approximately 1000 kg/m³, which is equivalent to 0.001 g/cm³.

Putting all these values into the equation for v2, we get:

v2 = (0.001 g/cm³ x 1.5 cm² x sqrt(2 x 9.81 m/s² x 6.0 cm)) / (0.001 g/cm³ x 0.45 cm²)

Simplifying this expression, we get:

v2 = 1.89 m/s

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Heavy elements like pb (lead) and u (uranium) were generated during the collapse of a star and subsequent nuclear.

Answer:Yes, water indeed expands when it changes form from liquid to solid. And this is because water has a property called “hydrogen bonds”, and these bonds occur between each water molecule. But when water is in a liquid form these hydrogen bonds break more easily and occur less frequently. When the temperature drops the kinetic energy also drops, which in turn makes hydrogen bonds form more frequently. So the water molecules form a lattice, which is less dense than regular liquid water.

Explanation:

It was discovered that the rate of desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was first order. constant of 0. 128/s at 150 K , Half life=\(\frac {ln(2)}{k}\)=5.415 s

For first order desorption:

In(\(\frac {N}{N_o}\)) =-kt and \(\frac {N}{N_o}\) = \(e^{(-kt)\) where N is the number of molecules remaining at time t, No is initial number and k is rate constant

(A) Half life=\(\frac {ln(2)}{k}\)=5.415 s

(B) 25% desorbs \(\rightarrow\)  75% remains

⇒ \(\frac {N}{N_o}\) x 100% = 75% => \(\frac {N}{N_o}\)=0.75

In(0.75)=-0.128 x t

Time t = 2.25 s

(C) 50% desorbs ⇒ 50% remains

=> \(\frac {N}{N_o}\) x 100% = 50% => \(\frac {N}{N_o}\)= 0.50

In(0.50) = -0.128 x t

Time t = 5.42 S

(D) For t = 14 s

Fraction remaining= \(\frac {N}{N_o}\) =\(e^{(-0.128 \times 14)\)

Fraction remaining= -0.167 (approximately 0.17)

(E) For t = 20 s

Fraction remaining= \(\frac {N}{N_o}\) = \(e^{(-0.128 \times 20)\)

Fraction remaining=  -0.0773 (approximately 0.077)

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Answer:

c) Water molecules melt into gas molecules.

The chemical structure of water when it changes state - D. Nothing happens to the chemical structure.

Physical state of an object is the condition where substance have different energy content. For instance water is on heating it change into vapor or gaseous phase while cooling (decreasing heat content) causes water to become ice in solid phase. Therefore,

Thus, the change in physical state do not affect chemical properties, but affects the kinetics of the reactions.

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Answer:

C.

Explanation:

Answer:

C

Explanation:

The earths rotation on its axis