A spring with k = 11 N/m is stretched 0.25 m. What force does the spring apply?

No, the second law of thermodynamics does not disprove evolution. Evolution is not in violation of the second law of thermodynamics. The second law of thermodynamics is a statement of the direction of time.

The second law of thermodynamics is sometimes cited as a reason why evolution can not occur. The argument goes like this: the second law of thermodynamics shows that things in a closed system tend towards maximum disorder, or entropy. Living things evolve to higher levels of organization, which appears to violate this law. However, this argument is based on a misunderstanding of the second law. The second law of thermodynamics is a statement of the direction of time. It is related to the energy of the system. It shows that over time, entropy always increases. However, the second law of thermodynamics only applies to closed systems. Living organisms are not a closed system, and there is an input of energy from the sun. Living organisms can decrease their entropy locally while increasing entropy in the environment. This is perfectly consistent with the second law of thermodynamics.

The second law of thermodynamics does not disprove evolution. Evolution is not in violation of the second law of thermodynamics. Living organisms are not a closed system, and there is an input of energy from the sun. Living organisms can decrease their entropy locally while increasing entropy in the environment.

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The direction of the magnetic field at the center marked "x" is determined by the vector sum of the magnetic fields generated by each wire in the given configuration.

To determine the direction of the magnetic field at the center marked "x" in the given configuration, we can use the right-hand rule for magnetic fields.

Considering the current through the first straight wire is 1.5A, if we curl the fingers of our right hand in the direction of the current (from bottom to top), the thumb points in the direction of the magnetic field at that wire.

Now, focusing on the circular loop with a current of 2.0A, we can use the right-hand rule again. If we wrap our right hand around the loop with fingers in the direction of current flow (counterclockwise when viewed from above the loop), the thumb indicates the direction of the magnetic field at the center of the loop.

considering the second straight wire with a current of 1.0A, we can use the right-hand rule once more. Curling our fingers around the wire in the direction of the current (from top to bottom), the thumb points in the direction of the magnetic field.

By superposition, the total magnetic field at the center marked "x" is the vector sum of the magnetic fields from each wire. We add the individual fields based on their directions to find the resultant field at "x".

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the answer is  A

average speed

Answer:

A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol.

Explanation:

In the metric system of measurement, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth ...

Answer:

golf

Explanation:

it's less physical strength in more of you hitting the ball with whatever the stick is called

Answer: I am assuming it is decreases

Explanation: a straight line is 180 degrees. 2 angles both add up to 180 degrees on a straight line. When one increases, the other has to decrease to keep it 180 degrees on a straight line

true

because the creek is overflowing........ It is used to possess the nouns or to show the omission of letters

Answer: The weight of the probe will increase.

Given the resistance of the copper wire, length of the wire, and area of cross-section, we can calculate the resistivity of copper by the following formula.ρ = RA/L, .

Where: R is the resistance of the copper wireA is the area of cross-section of the copper wireL is the length of the copper wireSubstituting the given values, we haveρ = (2×10-2 ohms)(1.7×10-6 m2)/(2 m)ρ = 1.7×10-8 ohm-m.

Therefore, the resistivity of copper is 1.7×10-8 ohm-m. Given the resistance of the copper wire, length of the wire, and area of cross-section, we can calculate the resistivity of copper by the following formula.ρ = RA/L, .Where: R is the resistance of the copper wireA is the area of cross section of the copper wireL is the length of the copper wire .

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The conduction velocity of the axon is 0.4 m/s.

Conductive velocity = Distance / Time

= 20 cm / 50 milliseconds

= 0.4 m/s

The conduction velocity of an axon is determined by its diameter and its degree of myelination. Myelin is a fatty sheath that surrounds axons and helps to insulate them, which speeds up the conduction of action potentials.

Unmyelinated axons have a conduction velocity of about 0.5 to 10 m/s, while myelinated axons can have a conduction velocity of up to 150 m/s.

The conduction velocity of axons is important for the nervous system to function properly. It determines how quickly signals can travel from one part of the body to another.

For example, the conduction velocity of axons in the spinal cord determines how quickly pain signals can travel from the skin to the brain.

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The acceleration due to gravity on another planet is multiplied by your mass to calculate your weight on that planet. The acceleration due to gravity is different on each planet, so your weight will also be different. For example, the acceleration due to gravity on Earth is 9.8 m/s², while the acceleration due to gravity on Mars is 3.711 m/s². This means that if you weigh 100 pounds on Earth, you would weigh only 37.11 pounds on Mars.

The formula for calculating your weight on another planet is:

Weight = Mass * Acceleration due to gravity

For example, if you weigh 100 pounds on Earth and you want to calculate your weight on Mars, you would use the following formula:

Weight on Mars = 100 pounds * 3.711 m/s²

Weight on Mars = 371.1 pounds

Therefore, your weight on Mars would be 371.1 pounds.

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The focal length of the mirror, when the object is moved towards it and a virtual image is formed is calculated to be -4u/3.

We know that,

magnification, m =      height of image, v        

                                 height of the object, u

given in the question, m = 4

as the mirror is concave, thus:

v= -4u

Now, by using the mirror formula:

1/(-f) = 1/ v + 1/u    

(as the image formed is virtual, the focal length of the mirror will be negative)

1/(-f) = 1/(-4u) + 1/u

-1/f = 3/4u

f= -4u/3

Concave mirrors create both physical and virtual images. When the concave mirror is put very close to the object, a virtual and enlarged image is generated; as the distance between the item and the mirror increases, the size of the image decreases, and genuine images are formed. These real-world photographs can be displayed on a screen. The concave mirror's focal point and center of curvature are located in front of the mirror.

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The coefficients of friction for this scenario are μs = 0.4 and μk = 0.2.

The coefficient of static friction (μs) is the ratio of the maximum force of static friction (Fs max) that can be overcome between two solid surfaces in contact with each other, while the coefficient of kinetic friction (μk) is the ratio of the force of kinetic friction between two solid surfaces in contact with each other that are in motion. Both coefficients can be used to describe the amount of friction between two surfaces, which is dependent on the type of material and surface finish. The equation F = μN is used to calculate frictional forces, where F is the force of friction, μ is the coefficient of friction, and N is the normal force, which is equal to the weight of the object in question.

The normal force N, which is equal to the weight of the object, is determined using the equation N = mg, where m is the mass of the object and g is the acceleration due to gravity. Using this information, the coefficients of friction can be calculated. In this case, the block weighs 200 N and requires 80 N of force to overcome the static friction to get it moving. The normal force is equal to the weight, which is 200 N, so the coefficient of static friction is:

μs = Fs max /N= 80 N/200 N= 0.4. For the kinetic coefficient of friction, 40 N of force is required to keep the block moving at a constant velocity. Since the block is already moving, the maximum force of static friction does not apply, so the force of kinetic friction is used. Thus, the coefficient of kinetic friction can be calculated as follows: μk = kinetic friction/N = 40 N/200 N = 0.2

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Answer:

true

Explanation:

Answer:

c

Explanation:

Initially the capacitor just acts as a short circuit...or piece of wire ...just like it is not there....   so initially current =  V/R = 9/10 = .9 amps

as the capacitor charges to full capacity the current gradually decreases to

0 amps

The bowling ball will experience less acceleration then baseball.

Newton's second law of motion states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. Mathematically, this can be expressed as:

F = ma

where F is the force applied, m is the mass of the object, and a is the resulting acceleration.

In the given scenario, both the bowling ball and baseball are thrown with the same force. However, since the bowling ball has a larger mass than the baseball, according to Newton's second law, it will experience less acceleration than the baseball. This means that the correct answer is (D) less acceleration.

Therefore, the acceleration of an object is not only determined by the force applied to it but also by its mass. Objects with greater mass require more force to accelerate at the same rate as objects with lesser mass.

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Answer: 0

Explanation:

75 newtons will push back canceling it out make it 0

If I push on the wall with 75 Newtons of force, the wall will push back with 75 Newtons of force.

Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.

It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.

The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.

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The new capacitance can be calculated by multiplying the original capacitance by the dielectric constant of the material.

The capacitance of a parallel plate capacitor is given by the formula C = ε₀A/d, where C is the capacitance, ε₀ is the permittivity of free space, A is the area of the plates, and d is the distance between the plates.

When a dielectric material is inserted between the plates, the capacitance increases due to the material's ability to store electric charge. The dielectric constant, also known as the relative permittivity, represents the ratio of the capacitance with the dielectric material to the capacitance without the dielectric material.

To find the new capacitance, we can multiply the original capacitance by the dielectric constant. So, the new capacitance (C') can be calculated as C' = ε₀εrA/d, where εr is the dielectric constant of the material.

In this case, since the dielectric constant is given as 5.6, we can simply multiply the original capacitance by 5.6 to obtain the new capacitance. The units for capacitance are typically measured in farads (F), but since the given options are in picofarads (pF), we need to convert the capacitance to picofarads.

Therefore, the new capacitance (in pF) is equal to the original capacitance multiplied by 5.6.

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The convex spherical mirror is the diverging mirror. The image distance is 20.4 cm. The magnification is 0.417. The image is virtual and upright.

Magnification is the ratio of image distance to the object distance.

Object distance is 49 cm and the focal length of convex mirror is 35 cm, then image distance is calculated by the lens maker formula.

1/f = 1/v +1/u

1/-35 = 1`/v +1/49

v= -20.4 cm

Thus, the image distance is 20.4 cm.

The magnification is given by

m = v/u

m = -20.4 / 49

m = 0.417

Thus, the magnification is 0.417.

The image formed is by virtual meeting of light rays and above the principle axis. Thus the image is virtual and upright.

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Answer:

yes

hope this will help you

We are driving a late model convertible car at the 65 mph speed limit with its soft flexible roof closed up and the windows closed, we observe that the roof bows outward.

Speed is a scalar variable that expresses how much an object's position varies over time or how much it moves per unit of time. It is sometimes abbreviated as "s." The distance traveled by an object during a period of time divided by the length of the period gives the average speed of the object throughout that period.

The speed-related measures are time divided by distance. The most prevalent unit of speed in daily life is the kilometer per hour (kph), but the SI measure of speed is the meter per second (m/s).

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A wind of 180mph will place a force of 32400 Ib on a surface of 4ft².

The force of the wind blowing on a vertical surface varies jointly as the area of the surface and the square of the velocity.

If a wind of 60mph exerts a force of 20lb on a surface of 1/5 ft², how much force will a wind of 180mph place on a surface of 4ft²

A force of 1250lb is exerted

since the force of the wind varies jointly as the area of the surface and the square of the velocity,

let f = force

a = area

velocity =v

from the above statement, we find out that

f ∝ a * v²----1

that is  f = k * a * v²    -----2

where k is a coefficient of proportionality

since velocity of wind in mph, v =60

and force in lb = 20

and surface area = 1/5 ft²

from equation 2

20 = 1/5 * k * 60²

20 * 5 /3600 = k

25/9 = k

A wind of 180mph will place a force of on a surface of 4ft².

f = 25/ 9 *4 * 180²

f = 32400

Therefore, a wind of 180mph will place a force of 32400 Ib on a surface of 4ft².

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The acceleration produced by a total force of 165 N on a mass of 4.50 kg is 36.67 m/s²

The acceleration produced by a force can be determined using Newton's second law of motion, which states that the acceleration (a) of an object is directly proportional to the net force (F) acting on it and inversely proportional to its mass (m). Mathematically, it can be expressed as:

a = F / m

Given that the total force (F) is 165 N and the mass (m) is 4.50 kg, we can substitute these values into the equation to calculate the acceleration:

a = 165 N / 4.50 kg

a ≈ 36.67 m/s²

Therefore, the acceleration produced by the total force of 165 N on a mass of 4.50 kg is approximately 36.67 m/s².

This means that for every kilogram of mass, the object will experience an acceleration of 36.67 m/s² in the direction of the net force. Acceleration measures the rate of change of velocity, indicating how quickly an object's velocity is changing under the influence of the applied force. In this case, the larger the force or the smaller the mass, the greater the acceleration will be.

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Answer:

An ax being used to hit wood (action) and the wood splitting after being hit

by the ax (reaction)

Explanation:

Answer:

d

Explanation:

(a) The photon energy density in the Universe is approximately 4.17 × 10^-14 J/m^3.

(b) The number of CMB photons that fall on the outstretched palm of your hand every second is approximately 1.06 × 10^20 photons/s.

(c) The average energy due to CMB radiation that lands on your outstretched palm every second is approximately 1.24 × 10^-23 J.

(a) The energy density u of the CMB radiation can be calculated using the formula u = (π^2/15) * (kT)^4 / (ħc)^3, where k is Boltzmann's constant, T is the temperature, ħ is the reduced Planck constant, and c is the speed of light. Plugging in the values, we get u ≈ 4.17 × 10^-14 J/m^3.

(b) The number of CMB photons that fall on the outstretched palm of your hand every second can be calculated using the formula N = u * A / E, where A is the area of your palm and E is the energy per photon. The area of your palm can be estimated as about 0.1 m^2. The energy per photon can be calculated using the formula E = h * f, where h is Planck's constant and f is the frequency of the radiation. Since the CMB radiation is in the microwave range, its frequency is around 160 GHz. Plugging in the values, we get N ≈ 1.06 × 10^20 photons/s.

(c) The average energy due to CMB radiation that lands on your outstretched palm every second can be calculated by dividing the total energy received by the number of photons received. Since the energy received per second is given by u * A * c, where c is the speed of light, and we have already calculated the number of photons received per second, we can divide these quantities to get the average energy per photon. This turns out to be approximately 1.24 × 10^-23 J.

(d) The radiation pressure can be calculated using the formula P = u/3, where u is the energy density of the CMB radiation. Plugging in the value we calculated in part (a), we get P ≈ 1.39 × 10^-14 Pa. This is an extremely small value and is not noticeable on macroscopic objects.

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