A bow is drawn so that it has 40 J of potential energy. When fired, the arrow will have a kinetic energy of: Select one: O a. 80) o b. 20) O 0.60) O d. 40)

The total mechanical energy of the bicyclist is 1400 J, obtained by adding her potential energy of 720 J and kinetic energy of 680 J. The correct answer is option B.

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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

Newton's Second Law of Motion states that the net force acting on an object is directly proportional to its acceleration. The proportionality constant, which is the object's mass, gives the equation ma = f (force equals mass times acceleration). This means that if a force is applied to an object with a certain mass, it will accelerate proportionally to the magnitude of the force.

Applying Newton's Second Law of Motion allows us to determine the force required to move an object of a certain mass a certain distance. We can also use it to calculate the acceleration of an object given its mass and the force acting on it. The second law states that the acceleration of an object is proportional to the force applied to it and inversely proportional to its mass. If the mass of the object remains constant, the acceleration produced is directly proportional to the force applied.

The second law also tells us that if a net force is acting on an object, it will accelerate in the direction of that force. This law can be used to explain the motion of objects in both linear and rotational motion. For example, when a bat hits a ball, the force of the bat on the ball causes it to accelerate, and the ball moves in the direction of that force. In summary, applying Newton's Second Law of Motion is a powerful tool for understanding the motion of objects and how they respond to forces acting on them.

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In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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The force that causes dust and particles to clump together is known as the cohesive force.

The force that causes dust and particles to clump together is known as the cohesive force. Cohesive forces are attractive forces between the molecules of the particles. These forces arise due to the presence of intermolecular forces such as Van der Waals forces, hydrogen bonds, and dipole-dipole interactions. When these cohesive forces are stronger than the forces keeping the particles apart, the particles come together and stick to each other, forming clumps or aggregates. In the case of the formation of larger objects, such as planets or moons, the gravitational force also plays a role in pulling together smaller clumps of material to form larger bodies.

But scientists have long been baffled by precisely how dust particles adhere to one another. Electrostatic forces would create clumps the size of pebbles, much to how dust bunnies develop under a couch.

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Answer:

So Nessa went so fast it made her pass the tile in a second. Lets take a look at this problem, It says "the" tile so we should assume that it means 1 tile. Then draw a diagram representing that tile then you should have your problem finished. Hope that helped and I'm willing to help if you have anymore questions!

Explanation:

The speed of the sound wave is 330 meters per second. This is calculated by dividing the distance traveled (990 meters) by the time taken (3 seconds).

Speed is defined as the distance traveled per unit of time. In this case, the distance traveled by the sound wave is given as 990 meters, and the time taken is given as 3 seconds. By dividing the distance by the time, we get the speed of the sound wave, which is 330 meters per second. This means that the sound wave covers a distance of 330 meters in one second. The speed of the sound wave is 330 meters per second. This is calculated by dividing the distance traveled (990 meters) by the time taken (3 seconds).

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The frequency of these vibrations if the car moves at 43.0 m/s is 1954.54 Hz.

Given that,

The speed of the car = 43m/s.

or the speed of the car = 4300cm/s

A tire has a tread pattern with a crevice = 2.20cm

Since the crevice hits every 2.20cm,

This happens,

= 4300cm / 2.20

= 1954.54.

Therefore,

The frequency is 1954.54Hz

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Answer:

W=Fd

This is the equation for it

Answer:

b.  1 m

Explanation:

the distance from one crest to the next  is 1λ

So, the distance from one crest to the next  1 m

λ = 1 m

The pressure at the bottom of the column is determined as 94,080 Pa.

The hydrostatic pressure of the water column is pressure exerted due to the vertical column of water and it can be calculated by applying the following formula.

Mathematically, hydrostatic pressure is given as;

P = ρgh

where;

The given parameters include the following;

Substitute the above parameters and solve for the pressure exerted by the water column.

P = 1000 x 9.8 x 9.6

P = 94,080 Pa

Thus, the pressure exerted by the column of the water depends on the depth of the water or water column.

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The radius of the blood vessel must decrease by a factor of approximately 0.78 in order to reduce blood flow by 65%, assuming a constant pressure gradient.

The relationship between blood flow and radius of a blood vessel is described by the Poiseuille's Law, which states that blood flow is directly proportional to the fourth power of the radius of the vessel. Therefore, if blood flow is reduced by 65%, the radius of the vessel must decrease by a significant factor. To determine this factor, we can use the formula for Poiseuille's Law: \(Q = (\pi r^4\triangle P)/(8\eta l)\), where Q is the flow rate, r is the radius, ΔP is the pressure gradient, η is the viscosity of the blood, and l is the length of the vessel. Assuming a constant pressure gradient, we can simplify this equation to \(Q = (\pi r^4)/(8\eta l)\).
If we reduce blood flow by 65%, this means that Q decreases by the same factor. Therefore, we can write:
\(Q_{new} = 0.35Q_{old\)
Substituting this into the equation for Poiseuille's Law, we get:
\((\pi r_{new}^4)/(8\eta l) = 0.35(\pi r_{old}^4)/(8\eta l)\)
Simplifying and rearranging, we get:
\(r_{new} = (0.35)^{(1/4)} r_{old\)
\(r_{new}/r_{old} = (0.35)^{(1/4)\) ≈ 0.78
Therefore, the radius of the blood vessel must decrease by a factor of approximately 0.78 (or 22%) in order to reduce blood flow by 65%, assuming a constant pressure gradient.

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If you quadruple the temperature of a blackbody without changing its size, the total energy emitted increases by a factor of 256.

The total energy emitted by a blackbody is given by the Stefan-Boltzmann law, which states that the power radiated per unit area is proportional to the fourth power of the temperature (T^4).

Mathematically, we can express this relationship as:

P ∝ T^4

Where P is the power radiated per unit area and T is the temperature.

Now, let's consider the situation where we quadruple the temperature of the blackbody. In other words, if the initial temperature is T, the new temperature will be 4T.

Substituting this value into the Stefan-Boltzmann law, we have:

P ∝ (4T)^4
P ∝ 256T^4

So, when we quadruple the temperature of the blackbody, the total energy emitted increases by a factor of 256. This means that the power radiated per unit area will be 256 times greater than before.

It's important to note that this calculation assumes the size of the blackbody remains constant. If the size of the blackbody were to change, it would affect the total energy emitted differently. However, in the given scenario, where the size is not mentioned, we can conclude that quadrupling the temperature leads to a 256-fold increase in the total energy emitted.

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Answer:

The force of repulsion is 17.802 N

Explanation:

Given;

magnitude of the first charge, q₁ = 8.6 x 10⁻⁶ C

magnitude of the second charge, q₂ = 2.3 x 10⁻⁴ C

distance between the two charges, r = 1 m

The force of repulsion is calculated using Coulomb's law;

\(F = \frac{Kq_1q_2}{r^2} \\\\F = \frac{9\times 10^9 \times 8.6\times 10^{-6} \times 2.3\times 10^{-4}}{1^2} \\\\F = 17.802 \ N\)

Therefore, the force of repulsion is 17.802 N

Answer:

but I can tomorrow if you have time can you come to the meeting tonight but yyyy the person who is this and what

Explanation:

gyyyyyyyyyyyyyyyyy the number of the person who is this and what is the

Answer:

undetected cohesive forces help to hold some asteroids together

Gravity and friction should be correct.

Answer:

No and yes it's like a 30%or 20%

Explanation:

"researchers say that there is no proof that dimples are inherited."

meaning that if the mom or dad had dimples it might have a chance or no since a dominant trait not a recessive trait

Answer:

A. Commutator

Explanation:

Commutator is part of a motor causes its electromagnet to turn in the same direction consistently, transforming electrical energy into mechanical energy.

Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.

A commutator is a rotary electrical switch in certain types of electric motors and electrical generators.

Commutator is part of a motor causes its electromagnet to turn in the same direction consistently, transforming electrical energy into mechanical energy.

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Given

The concept of inertia forms the basis for Newton's Third Law of Motion

To find

The given statement is true or false

Explanation

The third law of motion states that every action has a equal and opposite reaction

Inertia is the property by virtue of which an object at rest tends to be at rest and object at motion tends to be at motion

Thus both the concept are not similar

Conclusion

The given statement is false

False, center of gravity and center of mass is not always the same.

Center of gravity is a point from which the weight of a body or system may be considered to act.

This is the point of concetration of the mass of the object with respect to a frame of reference.

Thus, we can conclude that center of gravity and center of mass is not always the same.

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According to the question the net force on particle q1 is \(1.45 * 10^-4 N.\)

Force is an influence that produces a change in the motion, direction, shape, or orientation of an object. It is a vector quantity, meaning it has both magnitude and direction. Force can be derived from different sources, including physical contact, gravity, magnetism, or even electrical fields. Force affects objects by producing acceleration, deceleration, or changes in direction.

The net force on particle q1 is the sum of the forces due to the two other particles. The force on particle q1 due to particle q2 is given by Coulomb's Law:

\(F12 = k(q1q2/r12^2)\)

Where k is the Coulomb's Constant, q1 and q2 are the charges of the two particles, and r12 is the distance between them, which is 0.220m.

Similarly, the force on particle q1 due to particle q3 is given by:

\(F13 = k(q1q3/r13^2)\)

Where q1 and q3 are the charges of the two particles, and r13 is the distance between them, which is 0.330m.

The net force on particle q1 is then the vector sum of these two forces:

Fnet = F12 + F13

Substituting the values for the charges and distances into Coulomb's Law gives:

\(Fnet = (9*10^9)(-(8.99*10^-6)(5.16*10^-6)/(0.22^2)) + (9*10^9)(-(8.99*10^-6)(-89.9*10^-6)/(0.33^2))\)

Simplifying, we get

\(Fnet = 1.45 * 10^-4 N\)

Therefore, the net force on particle q1 is\(1.45 * 10^-4 N.\)

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Answer:

degenerate

Explanation:

Answer:

c. Force applied is 75 N

EDITED

tan 37 = a/g

a = 3g/4

a in equation

t× 3/5 = 2 × 3g/4

t = 5× 10/2

t = 25n

f = ma

f = ( mt + mb )a

F = 10 × 3× 10/4

F = 75 n

• Correct option is (C).

We know that the angle made by string is θ=

\(tan {}^{ - 1} ( \frac{a}{g} )\)

where a is the acceleration of the frame in which the string is hanging in our case it is a trolley.

\(putting  \: θ=37° \: or \: tan \: 37° = \frac{3}{4} \)

\(we \: get \: a \: \frac{3g}{4} = \frac{30}{4} = 7.5 \: m/s^2\)

\( \boxed{Force \:  F=total  \: mass \:  of \:  the  \: system \:  on  \: which  \: force  \: is  \: acting ×acceleration  \: of  \: the  \: system=(8+2)×7.5=75 }\)

\( \boxed{ so \: force \: is \: 75 \:N. }\)

6.21 cm

where

Given:

solving step-wise:

\(\dashrightarrow \mathrm{T}=2 \pi \sqrt{\dfrac{\mathrm{L}}{\mathrm{g}}}\)

\(\sf \dashrightarrow \mathrm{0.5}=2 \pi \sqrt{\dfrac{\mathrm{L}}{\mathrm{9.8}}}\)

\(\dashrightarrow \mathrm{\dfrac{0.5}{2 \pi } }=\sqrt{\dfrac{\mathrm{L}}{\mathrm{9.8}}}\)

\(\dashrightarrow\sqrt{\dfrac{\mathrm{L}}{\mathrm{9.8}}}= \mathrm{\dfrac{0.5}{2 \pi } }\)

\(\sf \dashrightarrow{\dfrac{\mathrm{L}}{\mathrm{9.8}}}= (\mathrm{\dfrac{0.5}{2 \pi } })^2\)

\(\sf \dashrightarrow{{\mathrm{L}}= (\mathrm{\dfrac{0.5}{2 \pi } })^2*9.8\)

\(\sf \dashrightarrow{{\mathrm{L}}=0.06205922 \ m\)

\(\sf \dashrightarrow{{\mathrm{L}}=6.2059\ cm\)

\(\sf \dashrightarrow{{\mathrm{L}}=6.21\ cm\)             { rounded to nearest hundredth }

Let's see

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

\(\\ \rm\rightarrowtail 0.5=2\pi \sqrt{\dfrac{l}{9.8}}\)

\(\\ \rm\rightarrowtail 0.783=\pi \sqrt{l}\)

\(\\ \rm\rightarrowtail 0.2494=\sqrt{l}\)

\(\\ \rm\rightarrowtail \ell=0.0622m\)

Im not sure this in your choices but if it is, this is the answer.

I hope I've helped.

The three pieces of equipment that might be used in the optic experiments carried to develop microlasers are (1) laser source, (2) optical fibers, and (3) lenses.

1. Laser Source: A laser source is a crucial piece of equipment in optic experiments for developing microlasers. It provides a coherent and intense beam of light that is essential for the operation of microlasers. The laser source emits light of a specific wavelength, which can be tailored to suit the requirements of the microlaser design.

2. Optical Fibers: Optical fibers play a vital role in guiding and transmitting light in optic experiments. They are used to deliver the laser beam from the source to the microlaser setup. Optical fibers offer low loss and high transmission efficiency, ensuring that the light reaches the desired location with minimal loss and distortion.

3. Lenses: Lenses are used to focus and manipulate light in optic experiments. They can be used to shape the laser beam, control its divergence, or focus it onto specific regions within the microlaser setup. Lenses enable precise control over the light path and help optimize the performance of microlasers.

These three pieces of equipment, namely the laser source, optical fibers, and lenses, form the foundation for conducting optic experiments aimed at developing microlasers. Each component plays a unique role in generating, guiding, and manipulating light, ultimately contributing to the successful development and characterization of microlasers.

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The parallax angle for the star Hadar is 0.010 arcseconds. 100 PC far away is Hadar.

Parallax angle is a displacement or distinction in the apparent function of an item considered alongside two one-of-a-kind lines of sight and is measured by the attitude or semi-perspective of inclination among those two lines. because of foreshortening, close-by objects display a bigger parallax than farther items when found from distinct positions, so parallax may be used to determine distances.  

To a degree of big distances, including the gap between a planet or a star from Earth, astronomers use the precept of parallax. right here, the term parallax is the semi-perspective of inclination between sightlines to the megastar, as observed while Earth is on contrary sides of the solar in its orbit. those distances shape the lowest rung of what's called "the cosmic distance ladder", the first in a succession of methods by which astronomers determine the distances to celestial items, serving as a basis for other distance measurements in astronomy forming the higher rungs of the ladder.

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