Which of the following correctly describes the axes and units of
a position-time graph?

According to the question The horizontal velocity of the body is greatest in value at mid-stance for running. the correct option is C

Walking and running are two different ways of travelling by foot, but there are some key differences between them. Running entails a period of time when both feet are in the air and a period of time when both feet are in contact with the ground. When one foot is in contact with the ground, walking always has at least one foot in contact with the ground, whereas running requires both feet to be off the ground for a portion of the stride cycle. These differences affect the way that force is applied to the body, particularly the legs and feet.

To learn more about horizontal velocity
https://brainly.com/question/24949996
#SPJ11

Some of the advantages of gravity are it allows earth and other solar bodies to remain in their axis, and it helps us to maintain balance.

This is the force that attracts object towards the center of the earth.

Gravity has several advantages and they include the followings;

Thus, some of the advantages of gravity are it allows earth and other solar bodies to remain in their axis, and it helps us to maintain balance.

Learn more about advantages of gravity here: https://brainly.com/question/7868968

As the object is thrown up with the initial velocity of 20.0 m/s, and there is an air resistance force that would cause an acceleration of 3.00 m/s2, the speed of the object as a return to the ground is 10.8 m/s.

The kinematic equations are a set of equations that describe the motion of an object with constant acceleration.

When we have an initial velocity value, it is written as Vo, while for the final velocity, we simply write V or Vt. As an object moves through the air, air resistance slows the object’s speed.

The formula of the kinematic equation used for solving this case is

Vt = V0 + at (the gravity is 10 m/s2)

\(Vt = Vo + (-g-a)t\\\0 = 20 + (-10-3)t\\0 = 20-13t\\\13t = 20\\\t = \frac{20}{13}\)

After the time is known, now we can insert the value into the following formula :

\(Vt = Vo + (g-a)t\\Vt = 0 + 7.\frac{20}{13} \\Vt = 0 + \frac{140}{13} \\\Vt = 10.8 m/s\)

Thus, the speed of the object returns to the ground after being thrown up with an initial velocity of 20.0 m/s and acceleration of 3.00 m/s2, which is 10.8 m/s.

Learn more about kinematic equations by clicking this link :

https://brainly.com/question/28712225

#SPJ4

the flow rate of water across the net if the velocity vector field for the river is given by and the net is described by the given equations : V = x -yz + y

What is velocity?

Velocity is a key idea in kinematics, the branch of classical mechanics that studies how bodies move. It is defined as the directional speed of an object in motion as an indication of its rate of change in position as observed from a specific frame of reference and as measured by a specific standard of time (e.g. 60 km/h northbound).

A physical vector quantity called velocity must have both a magnitude and a direction in order to be defined. Speed is the scalar absolute value (magnitude) of velocity; it is a coherent derived unit whose quantity is measured in metres per second (m/s or m/s1) in the SI (metric system). In contrast to "5 meters per second east," which is a vector, "5 meters per second," for instance, is a scalar.

Learn more about velocity visit this link:

https://brainly.com/question/28192065

#SPJ4

To calculate the spring force required to hold the valve closed under a pressure of 3.5 megapascals, we need to use the formula for pressure, which is Force divided by area.

The area of the piston is πr^2, where r is the radius of the piston (which is half of the diameter given in the question). Therefore, the area of the piston is π(15 mm)^2 = 706.9 mm^2.

Now we can calculate the force required to hold the valve closed:

Force = Pressure x Area
Force = 3.5 MPa x 706.9 mm^2
Force = 2470 N

So, the spring force required to hold the valve closed under a pressure of 3.5 megapascals is 2470 Newtons. This force must be applied to the outside of the piston to counteract the pressure inside the tank and prevent the valve from opening.

To learn more about pressure visit;

https://brainly.com/question/12971272

#SPJ11

If you lift twice the load twice as high, in half the time then, the increase in potential energy is 4 times that of initial potential energy.

To find the answer, we need to know more about the gravitational potential energy.

                    \(m'=2m\\h'=2h\) where, m' and h' are the final mass and height.

                  \(U=mgh\\\) , let us take this as the initial energy.

                 \(U'=m'gh'=2m*g*2h=4mgh.\\U'=4U\)

Thus, we can conclude that, the final potential energy is 4 times the initial.

Learn more about the gravitational potential energy here:

https://brainly.com/question/28062267

#SPJ1

The final potential energy will be 4 times that of the initial, if we are twice the height and load.

To find the answer, we need to study about the gravitational potential energy.

                    \(m_f=2m\\h_f=2h\)

where the final mass and height are denoted by mf and hf.

                   \(U_i=mgh\)

let's consider this to be the initial energy.

                 \(U_f=2m*2h*g=4mgh=4U_i\)

As a result, we may say that the final potential energy is four times more than the original.

Learn more about gravitational potential energy here:

https://brainly.com/question/13124883

#SPJ1

Answer:

rotation is a day and revolution is 365 days

The work done on the gas is 2.73 Joules and the change in internal energy of the system is -2.73 Joules.

The monoatomic gas is taken from 7.43L to 3.32L at a constant pressure of 0.293 atm.

(a) The work done for monoatomic gas is,

W = PΔV/(1-y)

P is pressure, V is volume and y is adiabatic constant which is 1.66 for monoatomic gas.

Putting values,

W = 0.293(3.32-7.73)/-0.44

W = 2.73 Joules.

So, the work done in this process is 2.73 Joules.

(b) In this process the change in internal energy is negative to the work done so, Change in internal energy of the system is -2.73 Joules.

To know more about Internal energy, visit,

https://brainly.com/question/25737117

#SPJ4

The buoyant force on a 2.20 liter helium balloon can be calculated by multiplying the volume of the balloon by the density of the displaced air and the acceleration due to gravity. Assuming standard temperature and pressure (STP) conditions of 0°C and 1 atm, the density of air is approximately 1.29 g/L.

Buoyant force = volume of balloon × density of displaced air × acceleration due to gravity

Buoyant force = 2.20 L × 1.29 g/L × 9.81 m/s²

Buoyant force = 28.3 N

Therefore, the buoyant force on a 2.20 liter helium balloon is approximately 28.3 N. This means that the balloon experiences an upward force of 28.3 N due to the difference in density between the helium in the balloon and the surrounding air, allowing it to float in the air.

Learn more about Buoyant force here;

https://brainly.com/question/21990136

#SPJ11

Answer:

\(force = mass \times acceleration \\ 100 = m \times 5 \\ m = \frac{100}{5} \\ m = 20 \: kg\)

If the emergency air line breaks or gets pulled apart while driving, the loss of pressure will cause the emergency parking brakes to activate automatically.

This is a safety mechanism designed to bring the vehicle to a stop and prevent it from moving any further. The emergency brakes are spring-loaded, which means they engage automatically when air pressure is lost.

Once the brakes are engaged, the vehicle will not be able to move until the air line is fixed and pressure is restored.

To know more about pressure refer here

https://brainly.com/question/30673967#

#SPJ11

The rms speed of helium atoms near the surface of the Sun at a temperature of about 5400 K is approximately 617 km/s.

This value was calculated using the equation: vrms = sqrt(3kT/m), where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the mass of the helium atom.

Plugging in the values:

k = 1.38 x 10^-23 J/K.

T = 5400 K.

m = 6.646 x 10^-27 kg (mass of a helium atom).

vrms = sqrt(3(1.38 x 10^-23 J/K)(5400 K)/(6.646 x 10^-27 kg)) = 617 km/s.

Therefore, the rms speed of helium atoms near the surface of the Sun at a temperature of about 5400 K is approximately 617 km/s.

Read more about Helium atoms.

https://brainly.com/question/10897530

#SPJ11

Answer: No their are different chargers

No, Norbu cannot use the two thin copper wires to charge his mobile phone by inserting them directly into the socket.

Charging a mobile phone requires a proper charger and cable that are designed to regulate the flow of electricity and provide the appropriate voltage and current to the battery. Inserting copper wires directly into a socket is not only unsafe but also highly likely to result in electric shock, short-circuiting, overheating, or even causing a fire.

Using improper methods to charge electronic devices can lead to irreparable damage to the device, risk to personal safety, and damage to the electrical system. It's crucial to always use the correct and safe charging equipment provided by the manufacturer to ensure the safety of both the device and the user.

Learn more about copper at https://brainly.com/question/33164045

#SPJ2

Answer: This type of orbit has never been tried around Jupiter.

Explanation:  Juno takes 11 days to complete a revolution while Jupiter takes only 10 hours to spin around once.

To create a plot of b(z) vs z position, we first need to measure the magnetic field at various positions along the z-axis. This can be done using a magnetic field sensor or a magnetometer. Once we have obtained the measurements, we can plot b(z) vs z position.

The expected dependence of magnetic field as predicted by analytical derivations depends on the specific situation and the geometry of the magnetic field source. For example, for a long, straight wire carrying a current, the magnetic field follows a 1/r dependence, where r is the distance from the wire. For a solenoid, the magnetic field inside the solenoid is proportional to the current and the number of turns per unit length.

Comparing the experimental plot of b(z) vs z position to the expected dependence of magnetic field as predicted by analytical derivations allows us to determine if the measurements are consistent with the predicted behavior. If the two curves match closely, it provides support for the analytical model and indicates that the magnetic field is behaving as expected. On the other hand, if the two curves do not match, it could indicate a problem with the experimental setup, such as a faulty sensor or interference from external magnetic fields.

Overall, comparing experimental data to analytical predictions is a fundamental aspect of physics research and helps us to understand the behavior of physical systems.

Learn more about Magnetic :

https://brainly.com/question/26257705

#SPJ11

Please find attached photograph for your answer. Do comment whether it is useful or not.

The force needed to stretch the steel wire by 1% is 25,140 N.

The given parameters include;

The area of the steel wire is calculated as follows;

\(A = \pi r^2\\\\ A= 3.142 \times (0.002)^2\\\\ A= 1.257 \times 10^{-5} \ m^2\)

The force needed to stretch the wire is calculated from Youngs modulus of elasticity given as;

\(E = \frac{stress}{strain} = \frac{F/A}{e/L} = \frac{FL}{Ae} \\\\F = \frac{EAe}{L}\)

\(F = \frac{200 \times 10^9\ \times\ 1.257\times 10^{-5}\ \times \ 0.01l_1}{l_1} \\\\F = 25,140\ N\)

Thus, the force needed to stretch the steel wire by 1% is 25,140 N.

Learn more here: https://brainly.com/question/21413915

Answer:

Explanation:

Eclipse happens when a large object gets in the way of another object; casting its shadow over it.

Solar eclipse happens when the moon get in between the sun and earth. It blocks sun light and causes its shadow over the sun as seen from earth.

Lunar eclipse happens when the earth is in between the sun and moon. It blocks sun light from reflecting off the moon surface so there is a shadow on the moon as seen from earth.

Answer:

1.23 m/s^2

Explanation:

Acceleration is  Δv / Δt

  accel  =  (12.6-4) m/s  /  7 s =  1.23 m/s^2

Answer:

If the person rises 12 ft per revolution that person will

rise 18 ft in 1 and 1/2 revolutions

E = m g h = W h          where W is the weight of the person

E = 149 lb * 18 ft = 2682 ft-lbs

The force acting on the body by its weight is 656.6 N. The displacement for him is 2.4 m. Then the work done is 1595.5 J.

Work done is a physical quantity describing the force acted over a displacement. It is the dot product of force and displacement.

Given that, the weight of the person = 149 lb

1 lb = 0.45 kg

149 lb = 149 × 0.45 = 67 kg.

weight in Newton = 67 kg × 9.8 m/s² = 656.6 N

The displacement he made = 12 ft - 4 ft = 8 ft

1 ft = 0.3 m

then 8 ft = 8 × 0.3 = 2.4 m

Now, work done W = f. ds

W = 2.4 m × 656.6 N = 1595.5 J

Therefore, the work done by the person weighing 149 lb walking exactly one and a half revolution(s) up a circular, spiral staircase of radius 4 ft if the person rises 12 ft after one revolution is 1595.5 J.

To find more on work done, refer here:

https://brainly.com/question/13662169

#SPJ2

Answer:

Explanation:

Electron

The maximum cargo load of the Goodyear blimp is 2568.8 kg when flying at a sea-level location with an air temperature of 20°C.

To solve this problem, we need to use Archimedes' principle, which states that the buoyant force on an object is equal to the weight of the fluid displaced by the object. In this case, the fluid is air, and the buoyant force on the blimp is equal to the weight of the air displaced by the blimp.

First, we need to calculate the weight of the blimp, which is equal to the sum of the envelope and gondola:

Weight of blimp = 4300 kg

Next, we need to calculate the weight of the air displaced by the blimp. We can use the density of air at 20°C, which is approximately 1.204 kg/m³:

Volume of blimp = 5700 m³

Weight of air displaced = Volume of blimp x Density of air = 5700 x 1.204 = 6868.8 kg

Finally, we can calculate the maximum cargo load by subtracting the weight of the blimp from the weight of the air displaced:

Maximum cargo load = Weight of air displaced - Weight of blimp = 6868.8 - 4300 = 2568.8 kg

To know more about helium balloon, here

brainly.com/question/12666223

#SPJ1

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 80 × 4

We have the final answer as

Hope this helps you

The formula is used to determine the work done by a force: work = force x distance. It is necessary to multiply the force by the distance moved by the object in the direction of the force. The force is expressed in newtons, and the distance is expressed in meters.

To find the work done by the force in moving an object 10 meters, it is necessary to calculate the area beneath the graph of the force function between x = 0 and x = 10. The area beneath the graph corresponds to the work done by the force moving the object. To find the area beneath the graph, you can split it into small rectangles and sum their areas. The width of each rectangle is the distance between the two consecutive points on the x-axis, and each rectangle's height is the force's value at that point. The work done by the force can be expressed as follows: work = force x distance work = area beneath the graph of the force function between x = 0 and x = 10. The area beneath the graph can be calculated using the trapezoidal rule or Simpson's rule, but the exact method depends on the graph's shape.

To know  more about work done

https://brainly.com/question/25573309

#SPJ11

Firstly, we can write the equation for the electric force. It is:

By applying our values we get

Now, if we remind ourselves of Newton's law, we know that

We know the mass, and we know the Force, so we can find out the acceleration, this gives us:

Thus

Our final acceleration is 0.122 m/s^2

Answer:

In an electric field a charged particle, or charged object, experiences a force. If the forces acting on any object are unbalanced, it will cause the object to accelerate. With this in mind: If two objects with the same charge are brought towards each other the force produced will be repulsive, it will push them apart.

Explanation:

Answer:

Option D. 16 m/s

Explanation:

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

Initial velocity (u) = 0 m/s

Height (h) = 13 m

Acceleration due to gravity (g) = 9.8 m/s²

Final velocity (v) =?

We can determine how fast (i.e final velocity) the ball is traveling when it reaches the ground as illustrated below:

v² = u² – 2gh

v² = 0² – (2 × 9.8 × 13)

v² = 0 – 254.8

v² = 254.8

Take the square root of both side.

v = √254.8

v = 15.96

v ≈ 16 m/s

Thus, the ball is travelling with a velocity of 16 m/s when it reaches the ground