Select one of the trials of Jessie running without a backpack. Make measurements and calculations to determine the amount of power her legs produce to offset the work done by the force of gravity as she runs up the hill.

The greatest positive acceleration occurs at the midpoint of the interval, when the particle is changing velocity most rapidly.

Velocity is a measure of the rate of change of an object's position over a period of time. It is a vector quantity, which means it has both magnitude (or size) and direction. Velocity is usually expressed in terms of distance traveled per unit of time, such as meters per second (m/s). Velocity can be determined by dividing the distance traveled by the time taken. For example, if an object travels 20 meters in 5 seconds, its velocity would be 4 m/s. Velocity can also be calculated by taking the derivative of the object's position with respect to time.

The particle will achieve its greatest positive acceleration at the midpoint of the interval, at t = b/2.
This is because the acceleration is greatest when the velocity is changing most rapidly.
At the beginning of the interval, the particle has zero velocity, so it has no acceleration.
At the end of the interval, the particle has reached its maximum velocity, and the rate of change of velocity is zero, so it has no acceleration. Therefore, the greatest positive acceleration occurs at the midpoint of the interval, when the particle is changing velocity most rapidly.

To learn more about velocity
https://brainly.com/question/24445340
#SPJ1

On Venus's surface, the acceleration brought on by gravity is 0.90495(gE). The acceleration brought on by a planet's gravity.

However, gravity is a force in a more general sense since it symbolizes the interaction that takes place when two masses are close to one another. Gravitational effects are fundamentally caused by the stretching of spacetime and the motion of things through the stretched spacetime. The effect, nevertheless, seems to be the result of using force.

Gravity only comes in one variety. In nature, there is only one form of gravity. According to their masses and the separation between their centers, there is only one kind of gravitational force that draws the two bodies together. Gravity is the weakest force known to exist in nature and is a form of central force.

To know more about gravity visit:

https://brainly.com/question/14874038

#SPJ4

Answer:

the distance moved is 3 m

Explanation:

as power = work done/time

and work done is force into parallel distance therefore;

P = F x d/ t

now:

P = 5 W

F = 5 N

t = 3 s

d = X m

hence;

5 = (5 x X)/3

15 = 5X

3 m = X

the distance moved is 3 m

The adjustments that would allow the student to increase the pressure of the gas are putting the container in a tank of room-temperature water and pushing the piston inward and putting the container in a tank of hot water and hold the piston in place.

As the gas is sealed in a container by a movable piston, the pressure of the gas can be increased by decreasing the volume of the container. This can be done by pushing the piston inward, which will decrease the volume of the container and thus increase the pressure of the gas.

Putting the container in a tank of hot water will increase the temperature of the gas and thus increase the pressure according to Gay-Lussac's law, which states that the pressure of a gas is directly proportional to its temperature.

Learn more about pressure:

https://brainly.com/question/12497098

#SPJ4

Answer:

If the lamps are in parallel then 6.0 V is the voltage accross each lamp:

R = V / I     Ohm's Law

R1 = 6 V / .1 A = 60 ohms

R2 = 6 V / .2 A = 30 ohms

1 / R = 1 / R1 + 1 / R2       resistance of parallel resistors

R = R1 R2 / (R1 + R2) = 30 * 60 / (30 + 60) = 1800 / 90 = 20 ohms

The rank of the given throws based on the amount of time it takes the ball to hit the ground will be - 1) 10 m/s 90-degree angle 2) 15 m/s 60-degree angle 3) 20 m/s 0 degrees 4) 15 m/s 30-degree angle 5) 15 m/s 45-degree angle 6) 10 m/s 60-degree angle

As you throw a ball up in the air, its velocity rises into the air, but actually, it is decreasing. On its way up, its speed lowers, until it stops at the very top of the ball's motion. Its acceleration is -9.8 m/s^2 at the top.

When a ball is thrown, the resulting motion of the ball is determined by Newton's laws of motion. From Newton's first law, the moving ball will stay in motion in a straight line unless external forces act on it.

To know more about motion, visit here:

https://brainly.com/question/82731

#SPJ4

Kinetic energy will the ball acquire from the bat is 1.0 x 102 J (option a).

Which four forms of friction are there?

The force that prevents one solid item from moving across another is known as friction. Static friction, sliding friction, rolling friction, and fluid friction are the four main categories of friction.

What leads to conflict?

Although friction is assumed to be created by the interactions between the microscopic bumps on surfaces when they rub against each other, scientists are not entirely sure what causes it. It is challenging for the surfaces to slide over one another because the bumps on each surface bend and exert stress on one another.

To know more about Kinetic energy visit:

https://brainly.com/question/18754989

#SPJ4

The distance between two airplanes that carry charges will be by coulombs law 28.83 meters.

An electric force is produced when two charged particles are present. The forces will be greater if you have larger charges. These two concepts, along with the knowledge that charges can attract and repel one another, can help you comprehend Coulomb's Law. The equation calculates the electrical forces acting on two objects.

Three guidelines to keep in mind when dealing with charges: Positive charges push away one another. Repulsion between negative charges. Charges that are in opposition to one another attract.

we know that from coulombs law;

F=(q1*q2)/r^2

q1= -5.0 c

q2=1.0 c

F= 6*10^3

from the above formula,

r^2=(q1*q2)/F

r= 28.83 meters

To know more about coulombs law visit:

https://brainly.com/question/9261306

#SPJ1

D. At the highest point of its path. at what point does the ball have the most energy.

What is path?

Path is a route or a way between two points. It is usually a line or a sequence of steps that one can take to get from one location to another. Paths can be physical, Path is a sequence of steps or actions that lead to a desired result or outcome. It is a plan or set of instructions that someone can follow to achieve a goal. Paths can be mental, physical, or spiritual in nature, and often involve making decisions and taking risks.

such as a path in a park or a street; they can also be abstract, such as a path of thoughts or a path to success. Paths can also refer to a journey or a route taken to reach a particular destination.

To learn about more path

https://brainly.com/question/17106945

#SPJ4

The total mechanical energy possessed by the skydiver-earth system is 707,672 J.

Gravitational force is a physical force that attracts objects with mass to each other. This force of attraction is caused by the gravitational field which is generated by the mass of an object. The gravitational force between two objects is inversely proportional to the square of the distance between them.

The strength of the gravitational force between two objects is determined by the product of their masses and the distance between them. On Earth, the gravitational force of the planet is what keeps us and objects on the ground. Gravity also plays an important role in the motion of planets and other bodies in the Solar System.

Total mechanical energy = kinetic energy + gravitational potential energy

Kinetic energy = 0.5 x 78 kg × (62 m/s)2 = 24,912 J

Gravitational potential energy = 78 kg × 9.8 m/s2 × 870 m = 682760 J

Total mechanical energy = 24912 + 682760 = 707672 J.

Thus, The total mechanical energy possessed by the skydiver-earth system is 707,672 J.

To learn more about Gravity  

https://brainly.com/question/940770

#SPJ4

Common examples of waves include light, sound, and ocean waves. Since sound and water waves are mechanical waves, they must travel through a medium.

There are three categories based on how energy is directed and how particles are moving: wave mechanics electronic waves. atomic waves.

For mechanical waves, longitudinal waves and transverse waves are the two main types of wave motion. The animations that follow demonstrate both varieties of waves and highlight how the movement of the wave differs from that of the particles in the medium it travels through.

Transverse ocean waves are used for many leisure activities, including swimming and surfing. They can also be used to produce renewable electricity using the motion of the waves.

To know more about waves visit:

https://brainly.com/question/21885257

#SPJ4

(a) The difference in temperature between these two planets is 17.6 °C.

(b) The expression of the temperature difference in Celsius is 17.8 °C.

The result is obtained by the formula for temperature conversion.

x °F = [5/9 (x - 32)] °C

x K = (x - 273.15) °C

(a) The average daytime temperature on Earth and Jupiter are 72°F and 313 K. Find the difference in temperature in Celsius!

We convert the two temperatures to Celsius.

72 °F = [5/9 (72 - 32)] °C

72 °F = [5/9 (40)] °C

72 °F = 22.22 °C

313 K = (313 - 273.15) °C

313 K = 39.85 °C

The temperature difference on Earth and Jupiter is

39.85 °C - 22.22 °C = 17,63 ≈ 17.6 °C

(b) If the temperature difference between day and night in Los Angeles is winter is 32 °F, find the expression in °C!

The temperature range of Celsius is 100 degrees and the temperature range of Fahrenheit is 180. If Δx in Fahrenheit is 32, Δx in Celsius is

x/32 = 100/180

x = (32×100)/180

x = 320/18

x = 17.8 °C

Hence, the temperature difference between the two planets is 17.6 °C and the between day and night in Los Angeles is 17.8 °C.

Learn more about temperature conversion here:

brainly.com/question/18800757

#SPJ4

20,000 bullets would have to be fired to make the railroad car move with a velocity of 1 m/s.

The rate and direction of motion are measured by a vector known as velocity.

We need to calculate the total impulse of the bullets and compare it to the force required to accelerate the railroad car to that velocity.

The impulse (change in momentum) of a bullet is equal to its mass times its velocity. So, for a 0.020 kg bullet with a velocity of 300 m/s, the impulse is:

0.020 kg * 300 m/s = 6 Ns

To calculate the force required to accelerate the railroad car, we use the equation:

force = mass * acceleration

Calculate the acceleration required to reach that velocity.

acceleration = (1-0) m/s^2 / 1 s = 1 m/s^2

force = mass * acceleration = 120,000 kg * 1 m/s^2 = 120,000 N

impulse = force * time = 120,000 N * 1 s = 120,000 Ns

To determine how many bullets are needed:

number of bullets = impulse / (mass * velocity) = 120,000 Ns / (0.020 kg * 300 m/s)

number of bullets = 120,000 Ns / 6 Ns = 20,000 bullets

So, 20,000 bullets would have to be fired to make the railroad car move with a velocity of 1 m/s.

To know more about velocity, visit:

brainly.com/question/18084516

#SPJ4

The last child in the line has greatest radial acceleration.

Tangential acceleration is a term used to describe how the tangential velocity of a point with a particular radius changes over time. The same linear and tangential accelerations, but in the tangential direction, result in the circular motion. Tangential acceleration is the rate of change in the matter's tangential velocity in a circular path.

We have linear acceleration and angular acceleration are proportional for something in motion. If there is a circular motion, the tangential and radial components will be parallel to one another. We will always accelerate in parallel to one another. The tangential and radio accelerations are connected to the linear acceleration of a point on a spinning object. It will be our decision (b).

Learn more about radial acceleration:

brainly.com/question/14071327

#SPJ4

The acceleration is directed radially toward the center of the circle.

The centripetal acceleration a(centripetal) has a magnitude equal to the square of the body's speed(v) along the wind divided by the distance(r) from the center of the circle to the moving body; that is,

a(centripetal) = v ²/r.

The tangential acceleration formula is a(tangential) = r α, where(α) is the angular acceleration, and(r) is the compass of the circle. It's derived from the fact that bow length is the compass of the circle multiplied by the angle in radians.

Learn more about tangential acceleration visit:

brainly.com/question/14993737

#SPJ4

Expression for the Balmer series to find the wavelength of the spectral line is as follows:   [tex]\frac{1}{\pi } = R ( \frac{1}{2^{2} } - \frac{1}{n^{2} } )[/tex]

Substitute   [tex]1.097 * 10^{7} m^{-1}[/tex]

for R and 4 for n in the above equation

       [tex]\frac{1}{\pi } = (1.097 * 10^{7} m^{-1} ) ( \frac{1}{2^{2} } - \frac{1}{4^{2} } )\\ = 0.20568 * 10^{7} m^{-1} \\\pi = 4.86 * 10^{7} m[/tex]

Balmer series is the series of lines of the atomic hydrogen in the visible and the ultraviolet spectrum. The wavelength of the photon emitted in this series corresponds to the electronic transition at the energy level 4 is in visible range of wavelengths.

How to calculate the wavelength using balmer series?

First, calculate the wavelength using the formula for the Balmer series of the spectral line for different values of n. After that, calculate the smallest wavelength in the Balmer’s series by using the formula for Balmer series. Later, calculate the largest wavelength in the Balmer’s series by using the formula for Balmer series. Later, calculate the smallest value of n, which is the lower limit for wavelength in the visible spectrum by using the formula for Balmer series. Finally, calculate the range for the wavelengths for the corresponding values of m by using the generalized formula for Balmer series.

Therefore, [tex]4.86 * 10^{7} m[/tex] is the answer.

To learn more about balmer series from the link

https://brainly.com/question/14915323

#SPJ4

Using conservation of energy, find the maximum height hmax to which the object will rise hmax = (v^2)/(2*g)

What is energy?

Energy is the ability to do work, or the capacity to produce a desired effect. It is the ability to be used or transferred from one form to another. Energy exists in many forms, including thermal, chemical, electrical, mechanical, and electromagnetic.

It is an essential resource for powering the world, enabling modern life and economic development. Energy can be converted from one form to another, and harnessed to do work. Examples include the conversion of sunlight into electrical energy, the conversion of coal into heat energy, and the conversion of wind into mechanical energy.

To learn about more energy

https://brainly.com/question/2003548

#SPJ4

(a) The linear speed of the yo-yo just before it reaches the end of its 1.0m-long string can be calculated using conservation of energy. The initial potential energy of the yo-yo is equal to its kinetic energy just before the end of the string:PE = KE ,mgh = 1/2 mv^2,where m is the mass of the yo-yo, g is the acceleration due to gravity, h is the height of the yo-yo above the ground, and v is the linear speed of the yo-yo.Substituting in the given values, we have:(0.050 + 0.0050) * 9.8 * 1.0 = 0.5 * (0.050 + 0.0050) * v^2,Solving for v, we find that the linear speed of the yo-yo just before it reaches the end of its 1.0-m-long string is:v = 2.44 m/s(b) The fraction of kinetic energy that is rotational can be calculated using the following equation:KE_rotational / KE_total = I_

What is the kinetic ?

The energy that an object in motion possesses is known as kinetic energy. It is the energy of movement, which is released when the object stops moving. This energy comes from the object's mass and velocity. Kinetic energy can be found in an object's rotation, vibration, or translation. Kinetic energy is a form of potential energy that can be converted into other forms of energy, such as thermal, electrical, or chemical energy. Kinetic energy is useful in many everyday situations, such as the motion of a car or the motion of a roller coaster. It can also be used to generate electricity, power mechanical devices, and even propel rockets into space.

To learn more about kinetic

https://brainly.com/question/8101588

#SPJ4

Her initial acceleration must rise as a result of a decrease in moment of inertia in order to maintain the same angular momentum. What happening to the wrestler's kinetic energy during this phase. Increased kinetic energy.

Describe kinetic energy. An item accumulates kinetic energy when work, which involves the transferring of energy, be done on it by exerting a net force.

The relationship between kinetic energy and an object's mass and unit of its velocity is direct: K.E. = 0.5 m v2. The kinetic energy is measured in kilograms-meters squared per real - time data if the mass is measured in kilograms and the velocity is measured in meters per second.

To know more about kinetic energy visit :
https://brainly.com/question/26472013

#SPJ4

The energy density in the magnetic field of the wave is marked down as

1/2 (Bo sin (ka-wt))^2/μo.

The quantity of energy that can be held in a specific system, substance, or area of space is known as its energy density. Energy per volume or mass can be used to measure energy density. A system or material has more energy stored in it when its energy density is higher.

Ub => energy density in the magnetic field => 1/2 B^2/μo

             μo => permeability of free space

Ub => 1/2 (Bo sin (ka-wt))^2/μo

When an electric field engages with a magnetic field, electromagnetic waves arise. Thus, they are referred to as "electromagnetic" waves. An electromagnetic wave's electric and magnetic fields are perpendicular to one another (at right angles).

Learn more about energy density here:

brainly.com/question/24244228

#SPJ4

after the string is cut and the two carts move apart, The kinetic energy of the carts.

What is the energy ?

Energy is the ability to do work or cause change. It can take many different forms, including thermal, electrical, chemical, nuclear, and mechanical forms. All matter contains energy, which can be harnessed and used to perform various tasks. Energy is essential to life, allowing us to do work, heat our homes, and power our vehicles. It is also necessary to generate electricity, which powers many of the technologies we use every day. Energy is constantly being converted from one form to another, and can never be created or destroyed. By using energy in an efficient and responsible manner, we can help protect the environment and ensure a sustainable future.

To learn more about energy

https://brainly.com/question/2003548

#SPJ4

The time this maneuver takes 1/10 seconds for the gymnast to complete this maneuver.

What is maneuver?

Maneuver is a military term used to describe a movement or series of movements that are employed to gain an advantage or tactical advantage over an opponent. It is often used to describe a series of tactical moves that are used in a battle or war. Maneuvering can involve a number of different strategies, including outflanking, encirclement, diversionary tactics, and other forms of strategic movement. Maneuvering can also include tactical decisions such as selecting a site or location for a battle to take place or selecting a group of troops to attack or defend a particular area.

The time this maneuver takes can be determined using the equation:

Time = (Angular Displacement) / (Angular Velocity)  

In this case, the angular displacement is one-half of a revolution, or π radians. The angular velocity is 5.00 rev/s, which is equivalent to 5.00 x 2π = 10π rad/s.

Time = (π) / (10π)

Time = 1/10 seconds

Therefore, it takes 1/10 seconds for the gymnast to complete this maneuver.

To learn more about maneuver

https://brainly.com/question/13018116

#SPJ4

False, as going faster than the posted speed limit in order to merge onto a highway is not permissible.

When merging into the motorway, drive at or near the speed of the other vehicles. It's fine if you move a bit slower, but the goal is to prevent disturbing traffic flow. Use your time on the ramp or in the merging lane to gain speed until you can smoothly merge into traffic.

When entering the on ramp, a vehicle must strive to accelerate in order to safely merge into the highway. While accelerating, the motorist should engage their turn signal so that oncoming traffic may notice their intentions. This may give a car on the highway enough time to move lanes to let you pass.

Learn more about Speed here:

https://brainly.com/question/28224010

#SPJ4

a) The energy is stored in the capacitor is 2.40825x10⁻⁷J

b) The required work must be done to pull the plates apart to a distance of 2.0 mm is 2.41 x 10⁻⁷J.

When an earthed conductor is brought close to a conductor, its capacitance increases noticeably. This is how a capacitor operates. A capacitor therefore consists of two plates with equal and opposite charges that are spaced apart.

(a) d = diameter = 6.4cm = 0.064m

A = Area of each plate of the capacitor = (0.25) \πd² = (0.25) (3.14)(0.064)² = 0.00322 m²

d = the plates being separated = 1 mm = 1 x 10⁻³ m

The capacitor's capacitance is given as

C = ε₀ A/d

C = (8.85 x 10⁻¹²)(0.00322)/(1 x 10⁻³)

C = 2.85 x 10⁻¹¹ F

V  = potential difference = 130 Volts

The capacitor's energy is described as

U = (0.5) CV²

U = (0.5) (2.85 x 10⁻¹¹)(130)²

U = 2.40825 x 10⁻⁷J

b) Q = C V

Q = (2.85 x 10⁻¹¹)(130)

Q = 3.705 x 10⁻⁹ C

d' = new distance = 2 mm = 0.002 m

The capacitor's new capacitance is given as

C' = ε₀A/d'

C' = (8.85 x 10⁻¹²)(0.00322)/(2 x 10⁻³)

C' = 1.42485 x 10⁻¹¹ F

The new capacitor's energy storage capacity is given as

U' = (0.5) Q₂/C'

U' = (0.5) (3.705 x 10⁻⁹)²/(1.42485 x 10⁻¹¹)

U' = 4.82x 10⁻⁷J

The energy stored in the capacitor before and after the plates are pulled apart produces the same amount of work.

W = U' - U

W = (4.82 x 10⁻⁷) - (2.40825 x 10⁻⁷)

W' = 2.41 x 10⁻⁷J.

To know more about capacitor visit:

https://brainly.com/question/26371817

#SPJ4

True. If car A and car B have the same acceleration, but car B has three times the mass of car A, car B will require three times the force to achieve the same acceleration as car A. This is because acceleration is directly proportional to the net force acting on an object and inversely proportional to the mass of the object. The equation that relates force, mass, and acceleration is F = ma, where F is the force, m is the mass and a is the acceleration.

Therefore, if car A and car B have the same acceleration, the force required to accelerate car B will be 3 times greater than the force required to accelerate car A due to its three times greater mass.

It's worth noting that the relationship between force, mass, and acceleration is a fundamental concept in physics, and it's described by Newton's second law of motion.

Read more about acceleration:

brainly.com/question/26408808

#SPJ4

A little ball that has a mass de 0.6 kg and travels at a speed of 12 m/s collides with another ball that has the same mass. When the first ball ceases moving, the second one advances and collides with a third ball that weighs 0.2 kg. The third ball travels at 36 m/s speed if the mechanism is closed.

The displacement an object / particle experiences with regard to time is expressed vectorially as velocity. The meter per second (m/s) is the accepted unit of velocity magnitude, sometimes referred to as speed.

Simply said, velocity is the rate of movement in a specific direction. like the speed of the a car driving north on the a highway or the pace at which a rocket takes off.

To know more about velocity visit:

https://brainly.com/question/18084516

#SPJ4

The maximum frictional force of the surface acting on the object is greater than or equal to 28 N.

Given that,

Coefficient of static friction = 0.35

It is represented by μ.

Normal force = 80 N

Let us calculate the maximum frictional force of the surface exerted on the object.

The surface's frictional force is equal to the product of the static friction coefficient and the normal reaction.

Mathematically, f = μ N = 0.35 × 80 = 28 N

The answer is 28 N if the static friction coefficient mentioned in the question is equivalent to limiting friction.

The maximum frictional force exceeds 28 N if it is less than the coefficient of limiting friction.

To know more about frictional force:

https://brainly.com/question/3389350

#SPJ4

The correct answers are B) using fewer wire loops in the solenoid, and C) using a stronger magnet moving the solenoid instead of the magnet moving the magnet more slowly.

This is because, when a bar magnet is moved through a solenoid, it produces a changing magnetic field which induces an electric current in the solenoid. The strength of the electric current produced is determined by the number of wire loops in the solenoid and the speed of the magnet moving through the solenoid.

Therefore, decreasing the number of wire loops in the solenoid and increasing the strength of the magnet moving through the solenoid will cause a decrease in the electric current produced.

Learn more about electric current using a bar magnet and a solenoid:

https://brainly.com/question/18051013

#SPJ4

1) The force of the object is 2.25 * 10^-11 N

b) The force of the object is 5.63 * 10^-12 N

2) The mass of the object is 72 Kg

c) The acceleration due to gravity is 9.7 m/s^2

We know that the gravitational force does speak of the force that is acting between two masses. It should be known that the gravitational force would depend both on the magnitude of the forces and on the distance apart.

Given that;

F = G m1m2/r^2

F = force on the objects

m1 and m2 = masses of the objects

G = Gravitational constant

r = distance of separation

1) F = 6.6 * 10^-11 * 35 * 35/60^2

F = 8.1 * 10^-8/3600

F = 2.25 * 10^-11 N

b) The force would then be; 1/4 * 2.25 * 10^-11 N =5.63 * 10^-12 N

2) 7 * 10^-9 =  6.6 * 10^-11 * m^2/7^2

m^2 = 49 * 7 * 10^-9 /6.6 * 10^-11

m =√49 * 7 * 10^-9 /6.6 * 10^-11

m = √3.43 * 10^-7/6.6 * 10^-11

m = 72 Kg

3) g = Gme/r^2

g = 6.6 * 10^-11 * 6.0 * 10^24/(6.38 * 10^6)^2

g = 39.6 * 10^ 13/4.1 * 10^13

g = 9.7 m/s^2

Learn more about gravity:https://brainly.com/question/4014727

#SPJ1

According to the decreasing efficiency of space in the structure, crystal lattice structures are in the order of Hexagonal close packing, Face centered cubic, Body centered cubic and simple cubic.

A unit cell of crystalline structure can be defined as the simplest repeating unit. All the classification of crystalline structure are based on these unit cells.

In simple cubic, the layers are arranged one above the other, while we examine the basic cubic structure, the atoms are present only on corners of the cube. It has a packing efficiency of 54% .

For body centered cubic, the packaging is more efficient, 68%. The atoms in a layer do not touch each other, but touches 4 atoms from above and 4 from below layers.

For Face centered cubic, packing efficiency is 74%. The second layer is packed in the indentation of the first layer, and third on indentation of second. Here atoms are packed as closely as possible.

For hexagonal close packing layers are packed such that the spheres overlay spheres of the previous layer. It also have a packing efficiency of 74%.

So the decreasing order is Hexagonal close packing > Face centered cubic > body centered cubic > simple cubic.

For further details regarding Crystal lattice structures, kindly refer

https://brainly.com/question/14582874

#SPJ4