muscle mass in a newborn constitutes % of total body weight, while muscle mass in an adult constitutes % of total body weight.

Static friction is 0 N ≤ \(f_{max}\) ≤ 920.612N

Maximum static friction is 920.612N

Kinetic friction is 709.324N

Kinetic and Static Friction The friction that exists between two systems when they are in touch and immobile with respect to one another is known as static friction. Kinetic friction is the friction that occurs when two systems are in contact and moving in relation to one another.

Aluminum and steel have a static friction coefficient of \(\mu_{k}\) =0.47  and a kinetic friction coefficient of \(\mu_{s}\) = 0.61 respectively.

Given.

Mass = 154 kg

The weight of the sculpture made of aluminum will exert a normal force equal to that of the steel platform. This is,

N = mg

The static friction is now calculated by multiplying the normal force by the coefficient of static friction. From 0 to limiting friction, the static friction ranges.

The maximum static friction that a body can experience in order to prevent motion is known as the limiting friction.

The limiting friction value, often known as the maximum static friction, is given as:

\(f_{max} = \mu_{s} N =\mu_{s} mg\) = 0.61 ×154×9.8 = 920.612N.

Static friction is defined as follows:

0 N ≤ \(f_{max}\) ≤ 920.612N.

The frictional force that affects a body as it is moving while being acted upon by forces is known as kinetic friction. As a result, the product of normal force and the coefficient of kinetic friction is kinetic friction. Kinetic friction is a persistent force that opposes.

So, the formula for kinetic friction is:

\(f_{k}\) = \(\mu_{k}\)N

\(f_{k}\) = \(\mu_{k}\)mg

\(f_{k}\) = 0.47×154×9.8

\(f_{k}\) = 709.324N.

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Answer:

a) 889 N / m

b) 133 N

Answer:

A)   v = 40 m / s, B)   v_average = 20 m / s

Explanation:

For this exercise we will use the kinematics relations

A) the final velocity for t = 5 s and since the body starts from rest its initial velocity is zero

         v = vo + a t

         v = 0 + 8 5

         v = 40 m / s

B) the average velocity can be found with the relation

         v_average = vf + vo / 2

         v-average = 0+ 40/2

          v_average = 20 m / s

Whitney's displacement is 1 block West from her starting point.

The displacement of an object or a body is the distance travelled by a body in a specified direction.

It represents the shortest possible straight line distance from its starting position to its new position while also specifying the new of the direction of the object or body.

Considering the walk by Whitney:

She walks to her aunt's house 5 blocks west.

She then goes to her friend's house 4 blocks east from her aunt's house.

Considering East and West as opposite horizontal directions, and the direction West to be positive and East to be negative;

Whitney's displacement = 5 blocks - 4 blocks = 1 block

Therefore, the displacement of Whitney is 1 block West from her starting point.

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True, Food manufacturers create fats by adding hydrogen to fats.

Hydrogenation is used in the oil industry in making trans fats or margarine by increasing the melting point through reducing the carbon-to-carbon double bonds..

During hydrogenation, unsaturated fats undergo a chemical reaction in the presence of hydrogen gas and a catalyst, typically nickel.

The process involves the addition of hydrogen atoms to the carbon double bonds in the fatty acid molecules, resulting in the conversion of some of the double bonds into single bonds.

This reduces the number of unsaturated bonds in the fat, making it more saturated.

So we can conclude that the statement is true.

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To solve this problem, we need to use the principle of conservation of energy, which states that the total energy in a system is constant. In this case, the energy lost by the copper pipe as it cools down will be gained by the water as it heats up. We can use the equation:

Q_copper = -Q_water

where Q_copper is the heat lost by the copper pipe, and Q_water is the heat gained by the water. The negative sign indicates that the energy flows from the copper to the water.

The heat lost by the copper pipe can be calculated using the formula:

Q_copper = mcΔT

where m is the mass of the copper pipe, c is the specific heat of copper, and ΔT is the change in temperature. We can assume that the final temperature of the copper-water mixture is the same, so we can write:

Q_copper = mc(800.0 - T)

where T is the final temperature of the mixture.

The heat gained by the water can be calculated using the formula:

Q_water = mwCΔT

where mw is the mass of the water, C is the specific heat of water, and ΔT is the change in temperature. We can assume that the initial temperature of the water is 20.0°C, so we can write:

Q_water = mwC(T - 20.0)

Now we can substitute these equations into the conservation of energy equation:

mc(800.0 - T) = -mwC(T - 20.0)

Solving for T:

mc(800.0 - T) = mwC(T - 20.0)

1500.0 * 0.386 * (800.0 - T) = 5.00 * 4.184 * (T - 20.0)

231480 - 579.6T = 20.92T - 418.4

600.52T = 231898.4

T = 386.6°C

Therefore, the final temperature of the copper-water mixture is 386.6°C.

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Where the exercise here is to name the disorder, note that:

It should be mentioned that medication (such as antidepressants or benzodiazepines) and/or counseling may be used to treat a panic disorder such as cognitive-behavioral therapy.

A suitable course of treatment for dissociative disorders may involve counseling (such as cognitive-behavioral therapy, trauma-focused therapy, or psychodynamic therapy) and/or medication.

The focus of psychodynamic therapy is on unconscious processes as they show in the client's current behavior. Client self-awareness and knowledge of the effect of the past on present behavior are the aims of psychodynamic therapy.

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Answer:

please follow me sir..............

Answer:

D

Explanation:

The north field of a magnet is the positive side. Arrows pointing out of a side = positive

Answer:

10kg bowling ball has more kinetic energy

The Ojibwe protected walleye populations as D. They said a limit on the number and size of Walleye a spearfisher can catch.

Wisconsin Walleye War was a series of protests regarding the fishing and hunting rights of the Ojibwes. Wisconsin wanted to regulate the rights of the people whenever they went fishing and hunting.

The protest eventually led to the state speaking to the people. This resulted in a resolution that there should be a limit on the number and size of Walleye a spearfisher can catch.

This was necessary in order to preserve the walleye for future generations.

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Explanation:

Here is the first one....you should try the second one...

Answer:

which can cause an object with mass to change its volocity

The magnitude of the electric field along the positive z axis is kqz/√(z^2+a^2)^3/2 , the angular frequency of these oscillations is √(kqq0/ma^3)

1. Given that a uniformly charged ring in the xy plane, centered at the origin.

Radius of the ring(r) = a

positive charge distributed evenly along its circumference = q

k= 1/4piepsion

The electric field can be described as, E = kq/r^2

The force exerted on an electric charge by a charge is F = q0E

Any vector can be projected along the z = A(z)=Acosθ

We know that ∑F =ma

Acceleration along z axis = a =d^2z/dt^2

The equation of motion for a simple harmonic oscillation along z is d^2z/dt^2 = -ω^2z

Here,  ω is the cosine function in a right-angled triangle is cosθ = z/√(z^2+a^2)

dE(z)=dEcosθ we know that E = kq/z^2+a^2

To calculate the magnitude of the electric field caused by complete rings, integrate dE(z)=dEcosθ

E(z) = Ecosθ = kq/(z^2+a^2) x  z/√(z^2+a^2)

E(z) = kqz/(z^2+a^2)^3/2

2. We know that F= q0E = kqq0z/(z^2+a^2)^3/2

Given The ball will oscillate along the z axis between z=d and z=-d in simple harmonic motion. Let z =d

F = kqq0d/(d^2+a^2)^3/2 = kqq0d/a^3

Force at any point along z = - kqq0z/a^3

We know F = ma =  

- kqq0z/a^3 = md^2z/dt^2

d^2z/dt^2= - kqq0z/ma^3

This equation of motion can be compared with the equation of motion for simple harmonic motions to find the angular frequency.

ω =√(kqq0/ma^3)

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Answer:

Acceleration is the change of velocity

Recall the definition of average velocity:

average v = ∆x / ∆t

The driver moves a distance of ∆x = 4.25 km = 4250 m in 2 min = 120 s, so the average velocity is

average v = (4250 m) / (120 s) ≈ 35.4 m/s

Under constant acceleration, the average velocity can also be computed by taking the average of the initial and final velocities:

average v = (initial v + final v) / 2

Solve for (final v) :

35.4 m/s = (20 m/s + final v)/2

final v ≈ 50.83 m/s

Recall the definition of average acceleration:

average a = ∆v / ∆t

Solve for a :

a = (50.83 m/s - 20 m/s) / (120 s)

a ≈ 0.257 m/s²

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when it is at rest.

because,

kinetic energy occurs when object in motion.

can,you mark me brainliest it's a request from.e to you

An object has no kinetic energy when it is at rest (Option A).

Kinetic energy is the measure of the work that an object does by virtue of its motion. Simple activities like walking, jumping, throwing, and falling involve kinetic energy. In this article, let us familiarize ourselves with the concept of kinetic energy.

Kinetic energy is the energy an object possesses due to its motion. The formula for kinetic energy is

KE = 1/2mv²,

Where m is the mass of the object and

v is its velocity.

When an object is at rest, it has zero velocity, which means that its kinetic energy is also zero.

Option B is not correct because even if an object is moving very slowly, it still has some kinetic energy. The amount of kinetic energy it has will depend on its mass and velocity.

Option C is not correct because the force acting on an object does not affect its kinetic energy directly.

Kinetic energy is related to an object's motion, not its forces.

Option D is not correct because an object's electrical charge does not affect its kinetic energy directly. The amount of kinetic energy an object has is determined solely by its motion.

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We can calculate the time taken by the compass to hit the ground by using kinematic equations of motion. The motion of the compass is a free-fall motion since it is only under the influence of gravity. When the compass is dropped, it is initially at rest.

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Answer:

towards the north.

Explanation:

The magnitude of the force exerted by the floor on the beetle is approximately 1.33 Newtons.

To determine the magnitude of the force exerted by the floor on the beetle, we need to consider the conservation of energy. As the beetle pushes against the floor and raises its center of mass, the work done by the force exerted by the floor is equal to the change in potential energy of the beetle.

First, let's calculate the change in potential energy. The height change from the initial position on the floor to the final height above the floor is 290 mm - 0.75 mm = 289.25 mm, which we need to convert to meters: 289.25 mm = 0.28925 m.

The change in potential energy can be calculated using the formula: ΔPE = mgh, where m is the mass of the beetle and g is the acceleration due to gravity. Since the mass of the beetle is given as 3.4 × 10^(-6) kg, and g is approximately 9.8 m/s², we have:

ΔPE = (3.4 × 10^(-6) kg) × (9.8 m/s²) × (0.28925 m) = 1.0 × 10^(-6) J.

According to the work-energy principle, the work done by the force exerted by the floor is equal to ΔPE. Therefore, the magnitude of the force exerted by the floor on the beetle is:

Force = ΔPE / distance = (1.0 × 10^(-6) J) / (0.75 mm) = 1.33 N.

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more of its gravitational potential energy becomes translational kinetic energy and less becomes rotational. slides down the ramp without friction.

= 1/2 m v2 Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

The amount of potential energy depends on the object's mass, the strength of gravity and how high it is off the ground. When you drop the object, this potential energy is converted into kinetic energy, or the energy of motion. Kinetic energy depends on an object's mass and its speed.

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Its elastic acceleration energy is converted more into translational kinetic energy than into rotational energy. glides without resistance down the ramp.

= 1/2 m v2 The relationship between kinetic energy and an object's mass and square from its velocity is direct: K.E. = 1/2 m v2. The kinetic energy is measured in g / kg body equation per second squared if the mass is measured in kilograms or the velocity is measured in meters per second.

The mass, gravitational pull, and height above the earth all affect how much potential energy an item has. This amount of energy is transformed into kinetic energy, and or energy that moves an item when it is dropped.

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The magnitude of Tom's acceleration is 0.585 m/s².

Acceleration is the rate of change of velocity with time.

The force applied by the Tom's sister is calculated by applying Newton's second law of motion as follows;

F = ma

F = 15 x 2.3

F = 34.5 N

The acceleration of Tom is calculated by applying Newton's third law of motion as follows;

\(F_{Tom} = -F_{little \ sister}\\\\F_{Tom} = - 34.5 \ N\)

\(a = \frac{F}{m} \\\\a = \frac{-34.5}{59} \\\\a = -0.585 \ m/s^2\\\\|a| = 0.585 \ m/s^2\)

Thus, the magnitude of Tom's acceleration is 0.585 m/s².

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Answer:

The cliff is 12.71m tall.

Explanation:

Why?

Before solving the problem, we must remember that the phone was dropped, it means that there is no initial velocity, also, the acceleration acting on the phone is the acceleration due to gravity.

So, to find how tall is the cliff, we can use the following equations:

\begin{gathered}y=y_o+v_o*t-\frac{1}{2}g*t^{2}\\\\v_f=v_o+g*t\end{gathered}y=yo+vo∗t−21g∗t2vf=vo+g∗t

\begin{gathered}t=\frac{v_f}{g} \\\\t=\frac{-15.75\frac{m}{s}}{-9.81\frac{m}{s^{2}}}=1.61s\end{gathered}t=gvft=−9.81s2m−15.75sm=1.61s

Now that we know the time, we can calculate how tall is the cliff:

\begin{gathered}y=y_o+v_o*t+\frac{1}{2}g*t^{2}\\\\y=0+0*1.61s-\frac{1}{2}*(-9.81\frac{m}{s^{2}})*(1.61s)^{2}\\\\y=12.71m\end{gathered}y=yo+vo∗t+21g∗t2y=0+0∗1.61s−21∗(−9.81s2m)∗(1.61s)2y=12.71m

The energy efficiency of the car is approximately 16.7%.

The energy efficiency of a car is the ratio of the useful work output (in this case, the kinetic energy of the car) to the total energy input (in this case, the energy released by burning the gasoline). The equation for energy efficiency is:

The useful work output can be calculated as the kinetic energy of the car using the equation:

where m is the mass of the car and v is its velocity.

Substituting the given values:

The total energy input is the energy released by burning 0.1 L of gasoline, which is:

Substituting these values into the equation for efficiency:

Therefore, the energy efficiency of the car is approximately 16.7%.

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Answer:

  see below

Explanation:

Simple harmonic motion is described by a differential equation in which acceleration is proportional to the opposite of displacement. The displacement-acceleration graph looks like a line with negative slope.

Answer:

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Answer:

Nuclear energy comes from tiny mass changes in nuclei as radioactive processes occur. In fission, large nuclei break apart and release energy; in fusion, small nuclei merge together and release energy.

I hoep that was helpful! Let me know:)

Explanation:

Answer:

Yes

Explanation:

Momentum is ensued when an object moves and results to kinetic energy. However a body sustain at a height h is said to possess energy equal to the mass × gravity × h

You see the object has an energy referred to as potential energy.

Answer:

first law is your answer, if I'm not wrong

Answer:

i think it's the first law of motion :)

Explanation: