A 12 kg mass, moving at 16 m/s, experiences an opposing force of 18 n for 3. 0 s. What is the magnitude of the change in momentum of the object?.

energy drinks

sitting

watching TV

Answer:

use natural lights

turn off electrical appliances..if not in use

check your wires every next Month

A torque is a force that a lever arm uses to apply to a body. When used to describe internal combustion engines or electric motors, torque refers to the force acting on the driving shaft.

To determine the torque, abductor muscle force, and net hip joint reaction force in a patient standing on one limb, please follow these steps:

1. Determine the torque that the abductor muscles must provide to maintain the body position:
i. Identify the forces acting on the hip joint: the patient's body weight (W) acting vertically downwards and the abductor muscle force (F) acting perpendicular to the lever arm (L).
ii. Calculate the torque (T) required to maintain body position using the formula: T = F * L

2. Determine the abductor muscle force that was required to produce this torque:
i. Rearrange the formula for torque to find the abductor muscle force: F = T / L
ii. Substitute the calculated torque (T) and the known lever arm (L) into the formula to find the abductor muscle force (F).

3. Determine the magnitude of the net hip joint reaction force:
i. Recognize that the net hip joint reaction force (R) is the vector sum of the abductor muscle force (F) and the patient's body weight (W).
ii. Calculate the magnitude of the net hip joint reaction force (R) using the Pythagorean theorem: R = √(F² + W²)

In summary, to solve this problem, you need to first calculate the torque required to maintain body position, then determine the abductor muscle force needed to produce this torque, and finally find the magnitude of the net hip joint reaction force.

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Answer:

T = 3.17 s

Explanation:

Given that,

The length of the pendulum, l = 2.5 m

We know that the period of oscillation of the pendulum is given by :

\(T=2\pi \sqrt{\dfrac{l}{g}}\)

Where

g is the acceleration due to gravity

\(T=2\pi \sqrt{\dfrac{2.5}{9.8}}\\\\T=3.17\ s\)

So, the period of oscillation is equal to 3.17 s.

Answer:

Gamma ray waves

Explanation:

Gamma ray waves carry the most energy electromagnetic waves.

Hope this helps, thank you !!

Answer:

We can float in space.

Explanation:

We can float in space because of gravity. Gravity is the force that attracts anything towards the centre of earth. We can stand, walk because of gravity. Even if we jump, we return to the ground because of gravity. In space, there is no gravity. That's why, we can't walk in space and everything floats there.

Answer:

1.49 x \(10^{11}\)

Explanation:

Kepler's third law states that The square of the orbital period of a planet is directly proportional to the cube of its orbit.

Mathematically, this can be stated as

\(T^{2}\) ∝ \(R^{3}\)

to remove the proportionality sign we introduce a constant

\(T^{2}\) = k\(R^{3}\)

k = \(\frac{T^{2} }{R^{3} }\)

Where T is the orbital period,

and R is the orbit around the sun.

For mars,

T = 687 days

R = 2.279 x \(10^{11}\)

for mars, constant k will be

k = \(\frac{687^{2} }{(2.279*10^{11}) ^{3} }\) = 3.987 x \(10^{-29}\)

For Earth, orbital period T is 365 days, therefore

\(365^{2}\) = 3.987 x \(10^{-29}\) x \(R^{3}\)

\(R^{3}\) = 3.34 x \(10^{33}\)

R = 1.49 x \(10^{11}\)

Answer:

The other person is correct

Explanation:

Edge

Answer:

Gina should put “rubber tires” under “Synthetic.”

Gina should put “starch” under “Natural.”

Explanation:

Answer:

C) Gina should put rubber tires under “Synthetic.”

D) Gina should put starch under “Natural.”

Explanation:

I'm late :(

To calculate the value of the resistor required to discharge a 3.00 μF capacitor to 10.0% of its initial charge in 3.00 ms, we can use the RC time constant formula: τ = R * C

Given that the desired time to discharge is 3.00 ms and the capacitor has a capacitance of 3.00 μF, we can substitute these values into the formula:

3.00 ms = R * (3.00 μF)

Next, we need to convert the time and capacitance to the base SI units:

3.00 ms = 3.00 × 10^(-3) s

3.00 μF = 3.00 × 10^(-6) F

Substituting the converted values into the formula, we have:

3.00 × 10^(-3) s = R * (3.00 × 10^(-6) F)

Simplifying the equation, we find:

R = (3.00 × 10^(-3) s) / (3.00 × 10^(-6) F) = 1000 Ω

Therefore, a resistor value of 1000 Ω (or 1 kΩ) will discharge the 3.00 μF capacitor to 10.0% of its initial charge in 3.00 ms.

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Let's call x the vinegar.

• The first brand contains 7% vinegar, this can be expressed as ,0.07x,.

• The second brand contains 12% vinegar, this can be expressed as ,(210-x)*0.12, because the total amount is 210 mL.

• The chef wants to make 210mL which is 11% vinegar, this is going to be the other side of the equation.

Let's express the equation.

Now we solve for x.

Impulse is important because it is the force that changes an object's momentum.

Momentum is a physical concept that describes the movement of an object due to the product of its mass and velocity. Momentum is a vector quantity, meaning it has both a magnitude and a direction. In classical mechanics, momentum is conserved, meaning that the total momentum of a system remains constant over time.

In the examples given, impulse is what allows the elevator to be hoisted up, the nylon ropes to hold a climber's weight, the runner to move around the track, and the plane to take off from the runway. Without impulse, none of these activities would be possible.

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a. the image is virtual and located in front of the converging lens. b. the location of the final image beyond the converging lens is approximately -11.48 cm, and the magnification of the final image is approximately -0.396.

A) To find the location of the final image beyond the converging lens, we can use the thin lens equation:

1/f = 1/di - 1/do

where f is the focal length of the lens, di is the image distance, and do is the object distance.

For the diverging lens, the focal length (f) is given as -19 cm (negative sign indicates a diverging lens).

For the object in front of the diverging lens, the object distance (do) is -29 cm (negative sign indicates that the object is in front of the lens).

Substituting these values into the thin lens equation:

1/(-19 cm) = 1/di - 1/(-29 cm)

Simplifying the equation:

-1/19 = 1/di + 1/29

To find the image distance (di), we can solve for it algebraically:

1/di = -1/19 - 1/29

1/di = (-29 - 19)/(19*29)

1/di = -48/551

di = 551/(-48)

di ≈ -11.48 cm

The negative sign indicates that the image is formed on the same side as the object, which means the image is virtual and located in front of the converging lens.

B) To find the magnification of the final image, we can use the magnification formula:

m = -di/do

where m is the magnification, di is the image distance, and do is the object distance.

Substituting the given values:

m = (-11.48 cm)/(-29 cm)

Simplifying the equation:

m ≈ 0.396

The negative sign indicates that the image is inverted with respect to the object.

Therefore, the location of the final image beyond the converging lens is approximately -11.48 cm, and the magnification of the final image is approximately -0.396.

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Radii is a vital feature of the elements, and it can be useful in determining the characteristics of elements in various chemical and physical processes. The radii of atoms and ions of the same element differ due to their various charge and mass characteristics.

Atomic and ionic radii increase as you move down a group on the periodic table, and decrease as you move across a period from left to right due to increased nuclear charge, making the electrons closer to the nucleus. The size of an atom and ion also changes due to the number of electrons charge, and electronic configuration.In order of increasing radius, the arrangement of \(Ne, F-, O2-, Br-, Rb\) is given as follows:

\(Ne < F- < O2- < Br- < Rb+\)

Rb+ has the smallest radius due to its large nuclear charge and fewer electrons in the valence shell.

As a result, they are larger than Rb+. O2- has more electrons than Ne and is the largest among the given ions and atoms. It is important to note that in certain conditions, the trends in radii may not be valid because of hybridization and other factors. Nonetheless, this arrangement is valid for the given ions and atoms.

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The graph in which the block will travel with the greatest speed is the graph with the greatest displacement at given equal forces.

Based on the principle of work energy theorem, the work done in moving the block against the frictionless floor is equal to the kinetic energy.  

K.E = ¹/₂kx²

K.E = ¹/₂Fd

¹/₂mv² = ¹/₂Fd

mv² = Fd

v² = Fd/m

v = √ (Fd/m)

Thus, the graph in which the block will travel with the greatest speed is the graph with the greatest displacement at given equal forces.

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Using everyday objects like a paperclip or a cent, monitoring the development of droplets, or using a soap bubble, one can illustrate surface tension at home or in the lab.

With a force tensiometer and a Du Noüy ring or Wilhelmy plate, surface tension can be detected. Or you might use an optical tensiometer and the pendant drop technique.

A stalagmometer is a device used to calculate surface tension using the stalagmometric method. . A stactometer or stalogometer is another name for it. A hygrometer is a type of weather instrument used to gauge the humidity level in the air.

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The amount of work done by the student in carrying the backpack is 30.6 J

Workdone is defined as the product of force and distance moved in the direction of the force.

Work done (Wd) = Force (F) × distance (d)

Wd = Fd

Also,

Force (F) = mass (m) × acceleration (a)

F = ma

Therefore,

Wd = (ma) × d

With the above formula, we can obtain the work done by the student.

From the question given above, the following data were obtained:

Wd = (ma) × d

Wd = 12 × 0.51 × 5

Wd = 30.6 J

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Answer:

The biggest factor affecting coastal erosion is the strength of the waves breaking along the coastline. A wave's strength is controlled by its fetch and the wind speed. Longer fetches & stronger winds create bigger, more powerful waves that have more erosive power.

Explanation:

hope it helps !

Answer:

The biggest factor affecting coastal erosion is the strength of the waves breaking along the coastline. A wave's strength is controlled by its fetch and the wind speed. Longer fetches & stronger winds create bigger, more powerful waves that have more erosive power.

Explanation:

The temperature distribution in a plane wall will be a curve during steady and one- dimensional heat transfer with constant wail thermal conductivity This statement is False.

The temperature distribution in a plane wall during steady and one-dimensional heat transfer with constant wall thermal conductivity will be a straight line, not a curve.

In steady-state heat transfer, when a constant wall thermal conductivity is assumed and the heat transfer is one-dimensional (occurring in one direction), the temperature distribution across a plane wall will exhibit a linear gradient. This means that the temperature will change uniformly along the length of the wall, resulting in a straight line distribution. This linear relationship is governed by Fourier's law of heat conduction and assumes a constant thermal conductivity and no heat generation within the wall. The temperature difference across the wall is proportional to the distance along the wall, resulting in a linear temperature profile.

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I'm going to assume that this gripping drama takes place on planet Earth, where the acceleration of gravity is 9.8 m/s².  The solutions would be completely different if the same scenario were to play out in other places.

A ball is thrown upward with a speed of 40 m/s.  Gravity decreases its upward speed (increases its downward speed) by 9.8 m/s every second.

So, the ball reaches its highest point after (40 m/s)/(9.8 m/s²) = 4.08 seconds. At that point, it runs out of upward gas, and begins falling.

Just like so many other aspects of life, the downward fall is an exact "mirror image" of the upward trip.  After another 4.08 seconds, the ball has returned to the height of the hand which flung it.  In total, the ball is in the air for 8.16 seconds up and down.

Answer:

\(F=2.93\cdot 10^{-10}~N\)

Explanation:

Newton’s Law of Universal Gravitation

Objects attract each other with a force that is proportional to their masses and inversely proportional to the square of the distance.

\(\displaystyle F=G{\frac {m_{1}m_{2}}{r^{2}}}\)

Where:

m1 = mass of object 1

m2 = mass of object 2

r     = distance between the objects' center of masses

G   = gravitational constant: \(6.67\cdot 10^{-11}~Nw*m^2/Kg^2\)

The asteroids have masses of \(m1=5.34\cdot 10^{3}~Kg\) and \(m2=2.06\cdot 10^{4}~Kg\) and are separated by r=5,000 m.

Calculating the gravitational force:

\(\displaystyle F=6.67\cdot 10^{-11}~Nw*m^2/Kg^2~{\frac {5.34\cdot 10^{3}~Kg \cdot2.06\cdot 10^{4}~Kg}{5,000^{2}}}\)

Calculating:

\(\mathbf{F=2.93\cdot 10^{-10}~N}\)

Answer:

D. 2.93 x 10-10 N​

Explanation:

Answer got deleted? Dont delete my answer 'katie'

btw got it right

Answer:

166 cm

Explanation:

Given :

d1 =109cm

M1= 45kg

M2=29000g = 29 kg

As we know that Newton second law

\(Force\ =\ Mass\ *\ Acceleration\)

Here M1= 45kg  

and acceleration=\(9.81 m/s^{2}\)

Therefore

\(F1=45 * 9.81\)

\(F1= 441.45 N\)

M2=29000g = 29 kg

Similarly

\(F2= 29 * 9.81\\ F2= 284.4 N\)

Now we using the Principal of moments

\(F1 * d1 =F2 *d2\)

\(441.5 * 109\ =\ 290\ *\ d2\\48,123.5=290 d2\\d2 =165.9\)

~ d2=166 cm

Answer: 16m/s

Explanation:  u=8m/s, t=40s, d=640m . so by the formula s= ut+1/2at^2 we will find acceleration . 640= 8×40+1/2×a×40×40= 640-320= 800a . 320/800=a. therefore a= 0.4m/s^2 . then find final velocity. v= u +at. v= 8+0.4×40 .v=24m/s. then average velocity = 640/40 =16m/s.

Answer:

72m/s

Explanation:

Since we're given:

u = 8m/s, a = 4m/s², s = 640m, t = 40

we are going to use the formula:

v² = u² + 2as

Let's substitute with the values

v² = 8² + 2 × 4 × 640

v² = 64 + 5120

v² = 5184

v = 72m/s

Collected data plays a crucial role in evaluating whether the criteria for success have been met. By analyzing the collected data, one can assess the progress made towards achieving the desired goals and determine if the criteria have been fulfilled.

Data provides an objective measure of performance or outcomes, allowing for an evidence-based assessment of success. It helps to quantify and track key metrics or indicators related to the criteria for success. By comparing the actual data with the predetermined benchmarks or targets, one can determine if the criteria have been met or if further improvements are required.

Data analysis also enables the identification of trends, patterns, and correlations, providing insights into the factors influencing success. It helps in identifying areas of strength and areas that need improvement. Additionally, data can be used for comparative analysis, benchmarking against previous periods or similar projects, to gain a broader perspective on success.

In summary, collected data provides an objective basis for evaluating progress and success by comparing actual performance against predetermined criteria, identifying areas of improvement, and gaining insights for future decision-making.

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A good recommendation for underweight people trying to gain weight is to focus on consuming a calorie surplus, balanced macronutrients, and engaging in resistance training exercises.

To gain weight in a healthy manner, underweight individuals can follow these recommendations:

Calorie Surplus: Consume more calories than your body needs to maintain its current weight. Aim for a calorie surplus of around 500-1000 calories per day. This surplus provides the extra energy needed for weight gain.

Balanced Macronutrients: Ensure you're consuming a balanced diet that includes an adequate intake of proteins, carbohydrates, and fats. Proteins are important for muscle growth and repair, while carbohydrates provide energy. Healthy fats are also essential for overall health.

Nutrient-Dense Foods: Focus on nutrient-dense foods that are rich in vitamins, minerals, and other essential nutrients. Include a variety of fruits, vegetables, whole grains, lean proteins, healthy fats, and dairy or dairy alternatives in your diet.

Regular Meals and Snacks: Consume regular meals and snacks throughout the day to meet your increased calorie and nutrient needs. Avoid skipping meals and aim for a consistent eating pattern.

Resistance Training: Engage in resistance training exercises to promote muscle growth. Strength training, using weights or bodyweight exercises, helps build muscle mass and can contribute to healthy weight gain.

Consistency and Patience: Remember that gaining weight in a healthy manner takes time. Stay consistent with your eating and exercise routine and be patient with the process.

It's always a good idea to consult with a healthcare professional or registered dietitian for personalized advice and guidance tailored to your specific needs and health conditions.

Underweight individuals trying to gain weight should focus on consuming a calorie surplus, balanced macronutrients, and engaging in resistance training exercises. This approach promotes healthy weight gain, muscle growth, and overall well-being. Consulting a healthcare professional or registered dietitian can provide further guidance.

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Tardigrades related to astronomy as they can survive in extreme, harsh environments, including space for long time without oxygen.  The correct option is A , B and C.

A special adaptation that allows the tiny animal known as the tardigrade to curl up into a dry, lifeless ball and survive for decades.

Tardigrades can undergo utter vacuum and intense pressures more than five times as in the deepest ocean. Temperatures up to 300F and as low as -458F is maintained.

They survive in space and for long time for about 10 days. They can live without water for decades.

Thus, the correct option is A , B and C.

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As the temperature of the air increases, the speed of sound also increases.

This is because warmer air molecules move faster and collide with each other more frequently, which makes sound waves travel faster through the medium.

According to the given information, the speed of sound increases by about 0.4 m/s for each degree Celsius of temperature rise.

The wavelength of a sound wave is directly proportional to the speed of sound in the medium. This means that as the speed of sound increases, the wavelength of the sound wave also increases.

The relationship between the two is described by the formula:

wavelength = speed of sound / frequency

Since the frequency of the sound wave remains constant, an increase in the speed of sound due to a rise in temperature will result in an increase in the wavelength of the sound wave.

Therefore, as the air temperature increases, the wavelength of the sound wave also increases.

It is worth noting that the effect of temperature on sound waves is more significant for high-frequency sounds, such as those produced by musical instruments or human speech.

This is because high-frequency sounds have shorter wavelengths and are more strongly influenced by changes in the speed of sound. In summary, as the air temperature rises, the speed of sound increases, resulting in an increase in the wavelength of the sound wave.

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The wavelength of a particular sound decreases as air temperature increases.

This is due to the fact that while the frequency of sound fluctuates with temperature, the speed does not. Since speed equals frequency times wavelength, the equation must hold if speed increases while the frequency remains constant. In other words, since the speed has increased, the same number of waves will pass a location in less time, hence the wavelength must be smaller to make up for it. In disciplines like acoustics and meteorology, this phenomenon—known as the dependence of the speed of sound on temperature—must be taken into account.

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The change in electric potential energy can be calculated using the formula ΔPE = qΔV, where ΔPE is the change in electric potential energy, q is the charge and ΔV is the change in electric potential.

We are given the change in electric potential (ΔV) as 6.0 V - 2.0 V = 4.0 V. We are also given the work done by an external force as 27.0 J. To find the charge (q), we can use the formula W = qΔV, where W is the work done. Rearranging the formula, we get q = W/ΔV. Substituting the given values, we get q = 27.0 J / 4.0 V = 6.75 C.

Now, we can calculate the change in electric potential energy using the formula ΔPE = qΔV. Substituting the values we have calculated, we get ΔPE = 6.75 C x 4.0 V = 27.0 J. Therefore, the change in electric potential energy is 27.0 J.

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Answer:

H = 0.06 kWh

Explanation:

Given that,

Power of an electric lamp, P = 60 W

Voltage, V = 240 V

It is operated for 1 hour

We need to find the heat generated by the lamp. Heat generated is given by :

\(H=P\times t\\\\H=60\ W\times 1\ h\\\\H=60\ Wh\\\\H=0.06\ kWh\)

So, 0.06 kWh of the heat is generated by the lamp.

The forest gives the characters an intellectual relaxation and an escape from the falsehood of the sector.

Forests are complex ecological machines in which wood is the dominant organism. Forests are nature's most pristine environments, with an overburden of photosynthesis that affects all plant and animal systems in a complex chain of plant relationships. , provides water, food and fuel security. Many of these sporting activities may or may not directly involve forests. Some are clearly recognizable, such as earnings, paper, and wood from trees.

It purifies the air we breathe, purifies the water we drink, prevents erosion and acts as an important buffer against climate change. Forests are home to many of the world's plants and animals, providing important botanical properties ranging fromwood and food to medicinal plants.

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Compare the amount of time needed is for projectile to go from its initial velocity to its highest point. (A) for a resistive force of zero.

A number called velocity describes the speed and direction of a point's motion. Because it has both direction and magnitude, velocity is referred to as a linear momentum and cannot be fully expressed in numerical terms, unlike time or length, that are scalar numbers.

According to the equation v = s/t, velocity (v) is indeed a vector quantity which quantifies displacement (and change in position, s), over change in time (t).

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Answer:

it is the

Explanation:

The object that experiences the reaction force to force A is the racket itself, which experiences an equal and opposite force from the ball. So, the correct answer is (Choice C) - The racket.

When Vincenzo swings his racket and hits the tennis ball, his racket exerts force A on the ball. According to Newton's Third Law of Motion, the ball exerts an equal and opposite force back on the racket. This is called the reaction force. Therefore, the object that experiences the reaction force to force A is the racket itself.

The reaction force is equal in magnitude and opposite in direction to force A, as per Newton's Third Law. This phenomenon is true for every action and reaction pair, where the two forces act on different objects. In this case, force A acts on the ball, and the reaction force acts on the racket.

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