URGENTTTT
Referring to the graph in the section header, what was his displacement between 100 and 300 seconds?


Referring to the graph in the section header, what was the runner's velocity during segment D?

Answer:

Potholes, large cracks, and a generally bumpy (and not smooth) road.

Explanation:

Rural roads tend to be poorly kept as they are not usually paid for by the city's tax money.

Poor road characteristics can include;

Potholes, fallen trees, uncovered water drains, and shoulder drop off (the shoulder – right side of the road past the solid white line – drops more than two inches from the road's surface).

SOURCE:

https://www.edgarsnyder.com/car-accident/cause-of-accident/bad-roads/hazardous-roads-types.html

The wavelength of the light is 1.92 * 10^-6 m which corresponds to the infrared region as shown in the image attached.

We know that the hydrogen atom has electrons that occupy energy levels that are in conformity with the Bohr model. According to the Bohr model, electrons can move from a higher to a lower energy level.

We now have;

1/λ = RH (1/[tex]n_{2} ^2[/tex] - 1/[tex]n_{1}^2[/tex])

λ = wavelength

RH = Rydberg constant

The initial and the final levels are also shown therefore;

1/λ = 1.097 * 10^7 ( 1/3^2 - 1/4^2)

1/λ= 1.097 * 10^7 (0.11 - 0.0625)

λ=1.92 * 10^-6 m

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The possible outcome of the collision would be Cart A moving forwards with speed (v), cart B at rest. That is option D.

Speed is defined as the quality of movement of an object with respect to time without the consideration of the direction of its movement.

From the question, the experiment contains two carts, A and B. Cart B is moving with the speed of v towards cart A.

Since the both cart bears the same mass, the speed of cart B would reduce while causing the movement of cart A.

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Answer:

light travel faster than sound

Explanation:

because light, travels at about 300,000,000 meters per second, travels much faster than sound, which travels at 340 meters per second

iam for su

r it is A

Explanation:

ertically. ai What type of energy is stored in a compressed spring? [1 ii What happens to this stored energy when the handle of the plunger is released?

A i. what

Answer:

its b and a

Explanation:

Correct option is B)

Power with which crane lifts the load =0.8×0.9 × input power

P=0.8×0.9×200 kW

Now, P=

F

.

v

Here, F=mg (since there is no acceleration)

10

3

×0.8×0.9×200=3.6×10

3

×10×v

⇒v=4 m/s

The potential energy of the water having height of 45 m and has a mass of 250 kg is 110,250 Joule.

The force acting on the two objects affects the potential energy formula. The formula for gravitational force is P.E. = mgh, where g is the acceleration caused by gravity (9.8 m/s2 at the earth's surface) and h is the height in meters.

Substituting the value of mass (m), height(h) and g in the formula of potential energy

P.E = mgh

P.E. = 250*9.8*45

P.E.= 110,250 J  

Potential energy is the power that a thing possesses as a result of where it is in relation to other objects. Because the earth can pull you down through the force of gravity while doing work in the process, being at the top of a stairwell gives you more potential energy than standing at the bottom.

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Taking into account the Newton's Second Law, she accelerate the soccer ball from rest to 37.234 m/s² in the process.

Newton's Second Law states that this force will change the speed of an object because the speed and/or direction will change.

Newton's second law defines the relationship between force and acceleration mathematically. This law says that the acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object.

Mathematically, Newton's second law is expressed as:

F= m×a

where:

In this case, you know:

Replacing in Newton's second law:

35 N= 0.94 kg× a

Solving:

a= 35 N÷ 0.94 kg

a=37.234 m/s²

Finally, she accelerate the soccer ball to 37.234 m/s².

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Answer:

  74.7 m

Explanation:

You want the minimum radius of curvature of a vertical circular arc so that vehicles traveling 95 km/h making the transition from horizontal to an 18° down grade will not leave the road.

The acceleration due to gravity on the vehicle at the point it is traveling 18° down is ...

  g·cos(18°) ≈ (9.8 m/s²)·0.95106 ≈ 9.32 m/s²

The radius of an arc and the speed of travel are related to the normal acceleration by ...

  r = v²/a

where v is the speed along the arc, and 'a' is the normal acceleration required to make an object follow the circular curve.

The speed of 95 km/h can be translated to m/s by ...

  (95 km/h) · (1000 m/(1 km)) · (1 h)/(3600 s) = 95/3.6 m/s ≈ 26.389 m/s

Using the above relation to find the radius, we get ...

  r = (26.389 m/s)²/(9.32 m/s²) ≈ 74.72 m

The minimum radius of the vertical circular arc should be 74.7 meters to prevent vehicles from becoming airborne.

__

Additional comment

In actual roadway design, factors of sight distance and stopping distance come into play. Sight distance over this crest would be about 25 m. It would need to be more than 6 times that distance for the roadway to be safe at 95 km/h.

An 18° down grade is about 3 times the usual maximum for roadway design, which will severely increase stopping distance. The vertical arc described here would leave the car with no normal force on the roadway at the end of the arc, so braking would be impossible. Passengers would be feeling weightless, too.

Roadway curves are generally parabolic (not circular), so they have a constant rate of change of slope with horizontal distance.

When basketball is inflated than there is more air resistance so weight that is force due to gravity is more.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Deflated and inflated ball are with air and without air so mass varies hence we say it is matter as it occupies space inside the ball.

When basketball is inflated than there is more air resistance so weight that is force due to gravity is more.

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Answer:

the gravitational attraction of each ball, so technically the others too lol

When a vacuum is created, it is created for the purpose to remove anything.

The main purpose of creating vacuum is referred to removal of the air from a particular space or chamber.

Such a kind of procedure should guarantee tightness.

If there is a slight leakage then the air molecules can slip in through that space created.

This will allow air to remain in the place and there won't be any possibility of creating vacuum as there won't be full removal of air.

Therefore, it becomes important to ensure the tightness of vacuum while creating it so that there is no passage created for air to pass through.

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Answer:

The other arrow/force should be in the same direction that Alex is pushing the heavy box.

Explanation:

If Alex is pushing the heavy box to the right, then another person helping him that is also pushing the heavy box to the right would lessen the amount that he has to push.

Explanation:

resultant motion = √x² + y²

this is using Pythagoras theorem whereas the x and y components can be used to construct a right angle triangle with the hypotenuse = resultant.

hope it helps. :)

When mass of Mars and Phobos are given then we can calculate that Mars and Phobos are 9.098x 10⁶ meters apart.

The gravitational force is that force that pulls objects with mass towards each other.

The formula for the gravitational force between two objects is given as:

Force = G  (M1) (M2) / (distance²)

Given, Force  =  4.98 x 10¹⁵N

G  =  6.673 x 10⁻¹¹  N·m²/kg²

Given One mass =   6.79 x 10²³ kg

and Other mass = 9.1 x 10¹⁵ kg  

Force = (G) · (M1) · (M2) / (distance²)

4.98x10¹⁵N = (6.673x10⁻¹¹N-m²/kg²)·(6.79x10²³kg)·(9.1x10¹⁵kg) / (distance²)

(distance²)·(4.98x10¹⁵N) = (6.673x10⁻¹¹N-m²/kg²)·(6.79x10²³kg)·(9.1x10¹⁵kg)

(distance²)=(6.673x10⁻¹¹N-m²/kg²)·(6.79x10²³kg)·(9.1x10¹⁵kg) / (4.98x10¹⁵N)

 (distance²)  =  8.279 x 10¹³  m²

distance  =  9.098x 10⁶ meters .  

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The speed ball when it reaches the bottom of the homemade ramp is 1.68 m/s.

The speed of the ball at the bottom of the ramp is determined by applying the principle of conservation of energy as follows;

total kinetic energy = total potential energy

rotational kinetic energy + translational kinetic energy = total potential energy

¹/₂Iω²  +  ¹/₂mv²   =  mgh

where;

¹/₂I(v/r)²  +  ¹/₂mv²   =  mgh

¹/₂Iv²/r²  +  ¹/₂mv²   =  mgh

I = ¹/₂mr²

¹/₂(¹/₂mr²)v²/r²  +  ¹/₂mv²   =  mgh

¹/₄mv² + ¹/₂mv² = mgh

¹/₄v² + ¹/₂v² = gh

v² + 2v² = 4gh

3v² = 4gh

v² = 4gh/3

v = √(4gh/3)

where;

v = √(4 x 9.8 x 0.215/3)

v = 1.68 m/s

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The apple moves a height of  h = [tex]\frac{v^{2} }{50 g}[/tex] because of its collision with the dart.

we can calculate the height of an object using the distance and angle.

In order to calculate the height of an apple with mass M is hanging at rest from the lower end of a light vertical rope. A dart of mass M/4 is shot vertically upward, strikes the bottom of the apple, and remains embedded in it.

We first calculate the velocity that the final mass gets once the collision takes place, in order to do this, we use momentum conservation.

pi = Pf = (5/4)Mv

We get the value for the velocity of the final mass, v , once the collision has been produced.

Once we have pi, with this final velocity, we can calculate the final height that the mass will get, to do this we use energy conservation.

An instant after the collision, the mass has kinetic energy, and we say that that is our altitude zero, but when the mass gets to its higher altitude, the kinetic energy is zero and the potential energy is different than zero, and we will write as follows:

Ei = Ef =  (1/2) (5/4 M (V/5)²  =(5/4 M)g*h

Equating and solving for height, we will get as the apple moves a height of  h = [tex]\frac{v^{2} }{50 g}[/tex] because of its collision with the dart.

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Answer:79g +9a(y>3

Explanation::79g +9a(y>3

Every action has an equal and opposite response, states Newton's Third Law of Motion. When a bullet is fired from a gun, the gun exerts force on the bullet that causes it to move forward. The bullet also applies an equal and opposing force to the gun as it moves backward.

The term “translational motion” refers to a motion in which the body moves in a straight line from one location to another. The motion of a bullet launched from a gun is an illustration of translational motion.As the bullet goes rearward, it exerts an equal and opposite force on the gun.

Therefore, A bullet loses kinetic energy and gains potential energy when fired vertically upward. At greater altitudes, the bullet continues to lose kinetic energy while gaining potential energy.

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The energy, E of the given waves are as follows:

a. Energy, E  = 6.63 * 10⁻²⁸ J

b. Energy, E  = 6.63 * 10⁻²⁴ J

c. Energy, E  = 1.99 * 10⁻¹⁶ J

d. Energy, E  = 4.97 * 10⁻¹⁹ J

e. Energy, E  = 2.84 * 10⁻¹⁹J

f. Energy, E = 1.99 * 10⁻¹⁶ J

The formula to calculate the energy of a wave s given below as follows:

where;

h is Planck's constant = 6.63 * 10⁻³⁴ Js

c is the velocity of light = 3.0 * 10⁸ m/s

λ is the wavelength of the light

The energies of the waves are calculated as follows:

a. λ = 3.0 x 10¹¹ nm or 3.0 * 10² m

E = 6.63 * 10⁻³⁴ * 3.0 * 10⁸ / 3.0 * 10²

E = 6.63 * 10⁻²⁸ J

b. λ = 3.0 x 10⁷ nm or 3.0 x 10⁻² m

E = 6.63 * 10⁻³⁴ * 3.0 * 10⁸ / 3.0 * 10⁻²

E = 6.63 * 10⁻²⁴ J

c. λ = 1 nm or 1.0 x 10⁻⁹ m

E = 6.63 * 10⁻³⁴ * 3.0 * 10⁸ / 1.0 x 10⁻⁹ m

E = 1.99 * 10⁻¹⁶ J

d. λ = 400 nm or 4.0 x 10⁻⁷ m

E = 6.63 * 10⁻³⁴ * 3.0 * 10⁸ / 4.0 x 10⁻⁷ m

E = 4.97 * 10⁻¹⁹ J

e. λ = 700 nm or 7.0 x 10⁻⁷ m

E = 6.63 * 10⁻³⁴ * 3.0 * 10⁸ / 7.0 x 10⁻⁷ m

E = 2.84 * 10⁻¹⁹J

f. λ = 1 nm or 1.0 x 10⁻⁹ m

E = 6.63 * 10⁻³⁴ * 3.0 * 10⁸ / 1.0 x 10⁻⁹ m

E = 1.99 * 10⁻¹⁶ J

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The relationship that would be able to describe this is that the gas does not dissolve into the water at a temperature below -5.83 units.

This is the term that is used to refer to the data types that includes Numbers such as weight, cost, and measurements

The descriptive and conceptual information gathered through surveys, interviews, or observation is referred to as qualitative data.

With a slope of 0.036, the volume v varies linearly with temperature T.

Volume v grows by 0.036 units for every unit increase in temperature as a result.

The volume of the gas dissolved in water is 0.21 units when the water's temperature is zero.

The smallest volume that is feasible is 0 because the volume cannot be negative. At a certain temperature, this occurs. This is the temperature at that time. Let's refer to it as Tc.

we have

Tc = -0.21 / 0.036

= -5.83

This means that the gas does not dissolve into the water below a temperature of -5.83 units.

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The acceleration of the SUV during crash as the crumple zone is collapsing is 0.0063 m/s².

Acceleration is the ratio of the force on a body to the mass of the body.

To calculate the acceleration of the  SUV, we use the formula below.

Formula:

Where:

Make a the susbject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, the acceleration of the SUV is 0.0063 m/s².

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The magnitude of the work done on the particle by the applied force is 19.72 J.

The work done in moving a charged particle is determined from the product of force and displacement of the object.

W = Fd

where;

The magnitude of the particle's displacement is calculated as follows;

|d| = √[(x₂ - x₁)² + (y₂ - y₁)²]

where;

|d| = √[(-3.1 - 0.92)² + (5 - 2.5)²]

|d| = 4.73 m

The magnitude of the force is calculated as follows;

F = √(-3.6² + 2.1²)

F = 4.17 N

The work done = 4.17 N x 4.73 m = 19.72 J

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Answer:

Motion is a change in Position.

Explanation

1. Change in time cannot be a motion, because time can change without any movement of an object.

2. speed and velocity are parts of motion but change in speed and motion is an acceleration (refer from acceleration formula), which means motion is not only change in speed or velocity but it is change in position.

Because change in position can be referred as speed and accerelation

The electricity produced either by varying the magnetic field through a mechanical movement of the magnet or by rotating or moving the loop within a fixed magnetic field that does not move in both cases the magnetic flux through the loop varies with time.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field.

A current will be induced in a coil of wire if it is exposed to a shifting magnetic field. Because of an electric field that is being generated, which drives the charges to move around the wire, current is flowing.

The electricity produced either by varying the magnetic field through a mechanical movement of the magnet or by rotating or moving the loop within a fixed magnetic field that does not move in both cases the magnetic flux through the loop varies with time.

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