What is the correct order of the planets in the solar system, starting closest to the sun?.

The potential energy of a 25 kg bicycle resting at the top of a hill 3 m high will be 735 J

potential energy = m*g*h

where

m = mass

g = acceleration due to gravity

h = height

potential energy = 25 * 9.8 * 3 = 735 J

The potential energy of a 25 kg bicycle resting at the top of a hill 3 m high will be 735 J

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The difference in the force exerted by the ground during a race between these two species is 259.25

Forces are influences that can change the movement of an object. A force can change the velocity of an object with mass, i.e. accelerate it. Forces can also be described intuitively by pushing or pulling. A force has both magnitude and direction and is a vector quantity.

Force exerted by the lion:

Normal force = mg

170 = m × 9.8

m = 17.34 kg

Forward force = ma

= 17.34 × 10.0

= 173.4 N

Total force = Normal force + Forward force

Total force = 170 + 173.4

= 343.4 N

Force exerted by the man:

Normal force = mg

75 = m × 9.8

m = 7.65 kg

Forward force = ma

= 7.65 × 10.0

= 76.5 N

Total force = Normal force + Forward force

Total force = 7.65 + 76.5

= 84.15 N

The difference in the forces exerted by these species is:

343.4 N - 76.5 N = 259.25 N

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During this process, the electric field gets stronger.

Because of the assumption that the distance between the plates is small in comparison to the area of the plates, the electric field in parallel plates is uniform and roughly constant. Due to the interaction of the fields produced by the two plates, the field is roughly zero outside of the plates.

The capacitor's two oppositely charged plates are separated by an electric field that is constant throughout, with the exception of the plate edges. The electric field does not change because the space between the plates is smaller than their combined surface area.

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The speed limit for a curved stretch of road with the coefficient of friction between the wheels and the road is 0.7 when the road is dry and 0.3 when the road is wet is √ 2.94 r m / s

Fc = m ac

Ff = μ N

N = m g

Fc = Centripetal force

m = Mass

ac = Centripetal acceleration

Ff = Frictional force

μ = Co-efficient of friction

N = Normal force

μ = 0.3 ( Wet value to taken to provide zero skidding under any condition)

g = 9.8 m / s²

The only force that is providing the centripetal force is frictional force.

m ac = μ m g

ac = 0.3 * 9.8

ac = 2.94 m / s²

ac = v² / r

2.94 = v² / r

v = √ 2.94 r m / s

Therefore, the speed limit for the curved stretch of road is √ 2.94 r m / s. She should perform her calculations with the coefficient of friction for wet pavement.

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Copernicus adopted the heliocentric view because it better explained the movements of the heavens mathematically.


Copernicus' heliocentrism could eliminate Ptolemy's epicycles because retrograde motion could be seen as the result of a combination of Earth and planetary motions and velocities.

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The time taken to reach the maximum height, given that the ball has an initial velocity of 22 m/s is 0.62 s

The time taken to reach the maximum height can be obtained by using the following formula:

t = uSineθ / g

Where

Now, we shall determine the time taken to reach the maximum as follow:

t = uSineθ / g

t = (22 × Sine 16) / 9.8

t = 0.62 s

Thus, the time taken is 0.62 s

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To find out the kinetic friction, using the coefficient friction formula.

What is kinetic friction?

A force that acts between moving surfaces is called "kinetic friction." A force acting in opposition to the direction of a moving body on the surface is felt. The two materials' kinetic friction coefficients will determine how much force is applied.

What is coefficient friction?

A measure of the degree of friction between two surfaces is the coefficient of friction. A coefficient of friction is determined by calculating the resistance to motion at the intersection of two surfaces made of the same or different materials.

UK

U-coefficient of friction

K-Kinetic friction

Using UK

450+370-f=m*o

f=820=UK*260*9.8

UK=2.548

820/2.548

UK= 321.8210361

Therefore the coefficient of kinetic friction is 321.8210361

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Solution: given that; velocity (v)=60km/hr, distance (d)=500km, time (t)=? From velocity=distance/time....... :. 60=500/t, cross-multiply..... 60t=500, divide both sides by 60...... 60t/60=500/60, t=500/60, t=8.33~. Therefore the bus took 8hours, 33 minutes to cover the distance of 500km.

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The wavelength of ultraviolet radiation that has an energy of 1.99*10^-20 kj/photon  is 3.00 x 1016 sec-1.

Frequency = speed of light divided by wavelength

wavelength times the speed of light to calculate frequency.

F = c/ = (1.00 x 10^-8 m) / (3.00 x 108 m/s) = 3.00 x 1016 sec-1

When calculating light energy, we require the following two equations:

E = hv, where h = Planck's constant (see below), v = frequency in Hz, and E = energy of a photon of light.

c =, where = wavelength in m, = frequency in Hz, and c = speed of light (3x108 m/sec).

When these two equations are rearranged, we obtain

We will apply the equation E = hc/ to resolve the current issue.

h = 6.626 x 10 – 34 Jsec

c = 3 x 10 ^8 m/s

λ = 1.00 * 10^^7 m

E = (1.00x10-8 m)/(6.626x10-34 Jsec)(3x108 m/sec)

E = 1.99x10-20 kJ/photon x 1 kJ/103 J, or 1.99x10-20 J/photon per photon.

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If there is no air resistance, what is the net if there is 10 n of air resistance, what is the net force,the net force of an object is 0N and acceleration is 6N.

When compared to displacement and velocity, acceleration is like the wrathful, flaming dragon of motion variables. People may be terrified of it, it might be harmful, and if it's enormous, it draws your attention. When you're in a fast-turning corner in a car or go-kart or when you're in a plane during takeoff, you can feel your own acceleration.

Since velocity depends on both speed and direction, you can only accelerate by changing either one or the other, if not both. The object will be moving faster if the acceleration is pointing in the same direction as the velocity. Additionally, the item will slow down if the acceleration is pointing in the opposite direction from the direction of the velocity.

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(a)  The diver's velocity when he hits the water is 13.795 m/s.

(b) The diver's net force while in the water was -3092.7N.

Newton's second law states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration an of its center of mass, F = ma.

The three equations of motion are: v = u + at, v2 = u2 + 2as, and s = ut + 12at2.

Given

A 65-kg diver jumps off a 9.7-m tower

(a) Using newton's equation of motion,

v² = u² + 2gs     ......... (1)

Where v = final velocity,

u = initial velocity,

s = height of the tower,

g = acceleration due to gravity.

Given: s = 9.7 m, u = 0 m/s (height jump), g = 9.81 m/s2.

Substitute into equation 1

v² = 0² + 2×9.81×9.7

v² = 190.314

v = √(190.314)

v = 13.795 m/s.

As a result, the driver's velocity when he hits the water is 13.795 m/s.

(b)

F = ma.    ......... (2)

Where F is the force applied to the diver, m is the diver's mass, and an is the diver's acceleration below the water's surface.

Also using

v² = u² + 2as .........  (3)

When the diver enters the water, u = 13.795 m/s, and when the diver comes to a complete stop, v = 0 m/s.

Given are the following values: s = 2.0 m, u = 13.795 m/s, and v = 0 m/s.

Substitute in equation 3

0² = 13.795²+2(2a)

0 = 190.30203 + 4a

-4a = 190.30203

a = 190.30203/-4

a = -47.58 m/s²

Also given: m = 65 kg,

Substitute into equation 3

F = (-47.58)(65)

F = -3092.7

The Force is negative because it acts against the diver's motion.

As a result, the net force exerted on the diver while in the water equals -3092.7N.

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We cannot. The precise location of the electron cannot be predicted. The likelihood of where an electron will land can be predicted.

Only the likelihood of an electron being present at different sites can be predicted. The probability distribution can even tell you the average location of several electrons, but quantum theory cannot tell you the precise location of the electron. It can only give you a rough sense of where the one electron will end up.

The wave effectively splits into two new waves as it travels through both holes, each of which spreads out from a different slit. Then, there is interference between these two waves. A peak and a trough may occasionally cross paths where they cancel one another out.

The double-slit experiment, which was conducted to study the characteristics of light in the eighteenth century, has subsequently been found to illustrate the duality of photons as well as the ideas of superposition and quantum interference.

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The output force that only lifts the load is 484 N

Calculation

For this case, the relationship between the two forces is given by

[tex]F_{1} =nF_{2}[/tex]

Where,

F1: output strength

F2: input force

n: mechanical advantage

Then, replacing the values ​​we have:

[tex]F_{1} = 2.2*220[/tex] = 484 N

Hence, the output force that only lifts the load is 484 N

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9.8m is the wavelength  of the automobile. The distance between identical points (adjacent crests) in adjacent waveform signal cycles carried in space or along a wire is defined as the wavelength.

The distance between identical points (adjacent crests) in adjacent cycles of a waveform signal carried in space or along a wire is defined as the wavelength. This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm).

A spectrum is the range of wavelengths or frequencies for wave phenomena. The term started with the visible light spectrum, but it is now used to refer to the full electromagnetic spectrum, as well as a sound or vibration spectrum.

wavelength=1470/150

                 =9.8m

In a series of waves, the distance between one peak and the next, or between one dip and the next. It is also one of the "yardsticks" used in radiation measurement.

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Answer:

The answer is photons.

Gabe should place the bulb to ensure a perfect beam of light at (C) (1,0).

A reflective surface used to gather or project energy like light, sound, or radio waves is known as a parabolic, paraboloid, or paraboloidal reflector, dish, or mirror. Its form is a component of a circular paraboloid or the surface produced by a parabola rotating around its axis.

Suppose the equation of parabolic mirror is Y2 = 4ax

The given data in the problem is x = 1 and y = 2

So the subject value is y2 = 4ax

4 = 4 a (1)

4 = 4a

a = 1

So  x = 1

thus focus is at  (x, y) = (1,0)

Thus option C is the correct answer.

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222.22 m/s is how fast these waves are moving. Relationship between wave speed, wavelength, frequency, and period.

The equation wave speed = frequency x wavelength describes the relationship between wave speed, wavelength, frequency, and period.

Reason: A. Given that we are aware that the formula for calculating a wave's speed is:

v = f, where v is the wave's speed.

f = the wave's frequency

A wavelength is

Here, stands for the separation between adjacent wave crests.

f = 1/Time Period = (1/1 hr)(1 hr/3600 s) f = 2.77 x 104 s1 = 800 km = 8 x 105 m

Therefore,

v = (2.77 x 10⁻⁴ s⁻¹)(8 x 10⁵ m)

v = 222.22 m/s.    

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The submerged fraction of a person when floating gently in fresh water is 0.989. The fraction of a person is submerged when floating gently in salt water with a density of 1027 kg/m³ is 0.963

fs = ρo / ρf

fs = Submerged fraction

ρo = Density of object

ρf = Density of fluid.

a ) For fresh water,

ρo = ρp = 989 kg / m³

ρf = ρw = 1000 kg / m³

fs = 989 / 1000

fs = 0.989

b ) For salt water,

ρo = ρp = 989 kg / m³

ρf = ρs = 1027 kg / m³

fs = 989 / 1027

fs = 0.963

Therefore,

a ) In fresh water, the submerged fraction is 0.989

b ) In salt water, the submerged fraction is 0.963

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In the period 6 inner transition element series, the 4f orbitals begin to be filled after the element Lanthanum(La) and Cerium(Ce).

The d and f Block elements in the groups of 3 to 11 are also called transition elements and inner transition elements respectively. 4f and 5f orbitals of f-block elements are steadily in the latter of two long periods.

Inner transition element:

Inner transition elements are those elements in which the last electron enters the f-orbital. The elements in which the 4f and the 5f orbitals are progressively filled are called f-block elements. These includes lanthanoids( Z = 58 - 71) and actinoids (Z = 90 - 103).

Therefore period 6 inner transition elements begin with Lanthanum and Cerium.

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In a car crash test, whether you let the car slam the wall or let the car plow into a tub of gelatin, the impulses are the same. However, you and your car will experienced greater force if the car slam the wall.

The impulse is defined as the change in momentum.

I = Δp = m . Δv

Where:

I = impulse

p = momentum

m = mass

v = velocity / speed.

From the Newton's second law of motion:

m = F/a

Where:

F = force

a = acceleration

Hence,

I = F / a . Δv

I = F . Δv/a = F . t

Where t = time period of the exerted force.

The initial and the final velocities of the car are the same for both cases. Hence, from the definition of impulse as the change of momentum, the impulses on both cases are the same. However, if the car experienced sudden stop, which means the force exerted on it in only a very short time, the exerted force on the car will be very large.

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Using Equations of motion, speed after 10 seconds will be 21 m/s and the distance travelled after 10 seconds will be 110 m.

What are  Equations of motion?

Equations of motion are thought of as the relationships that assist us in relating the physical quantities, such as distance traveled, time spent traveling there, acceleration, and initial and final velocities.

First equation of motion

Second equation of motion

Third equation of motion

Given,  initial velocity, u = 1 m/s

            acceleration, a = 2 m/s/s

            time = 10 s

Using First equation of motion, we find the speed after 10 seconds.

v = u + at

v = 1 + 2 x10

v = 1 + 20

v = 21 m/s

Using Second equation of motion, we find the distance travelled after 10 seconds,

s = ut + 1 / 2at2

s = 1 x 10 + ( 2 x 10 x 10)/2

s = 10 + 100

s = 110 m.

Hence, after 10 seconds speed will be 21 m/s and distance will be 110 m.

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The highest rate of speed a person can reach is called maximum speed.When athletes alter the magnitude or direction of their motion, or both.

The maximum speed the stone can attain is 8.366 m/s

Data;

   Mass = 10kg

   radius of tangential path = 7m

   Tension = 100N

Centripetal Force

The centripetal force of the stone can be calculated as

Fe =mv/r

v² = Tr/m

v=√Tr/m

v=√100*7/10

v=8.366 m/s

The tension acting on the string is given as

The maximum speed the stone can attain is 8.366m/s

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Using the concepts of gravitation, we find that it is true that tides are the periodic short term change in the height of the ocean surface at a particular place, generated by the long wavelength progressive waves that are caused by  interaction of gravitational force of the moon and sun.

Gravitational force is one of  basic forces of nature. It is a force that acts between two bodies and it is always attractive in the nature. Gravitational force is the force with which the objects are attracted to the centre of  earth. The motion of the planets and the moon are  governed by this force

Kepler’s first law All the planets will revolve around the sun in an elliptical orbit with the sun at one of the focus.

Hence, tides are the periodic short term change in the height of  the ocean surface at a particular place, generated by the long wavelength progressive waves that are caused by  interaction of gravitational force of the moon and sun is true.

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307.4 μW/m² average magnitude of the poynting vector 5.00 mi with an average power of 250 kw?

S-average=power/area

power=250 kw

area=4π(8045)²

S-average=250/4π(8045)²

S-average=307.4 μW/m²

Power is produced when a force causes a displacement. Power has no bearing on how long it takes for a force to cause a displacement. The process's pace might range from swiftly concluding to taking some time. For example, it takes an abnormally long time for a rock climber to elevate her body a few meters over the cliff's edge. On the other hand, a trail hiker may swiftly raise her body a few meters if she selects the faster path up the mountain. Despite making the same amount of work, the hiker completes the task far quicker than the rock climber..

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The height of the cliff is 121.75 m.

An equation of motion, describes the behavior of a physical system in terms of motion as a function of time. More specifically, the equations of motion describe the behavior of a physical system as a set of mathematical functions related to dynamic variables. The equations of motion are:

For the given case we will use the following equation:

s = ut + 1 / 2 gt²

s = Height of the cliff

u = Initial velocity of rock (5 m/s)

a = Gravitational acceleration (9.8 m/s²)

t = Time (4.5 sec.)

s = (5 × 4.5) + ( 1 / 2 × 9.8 × 4.5² )

s = 22.5 + 99.25

s = 121.75 m

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The de-Broglie wavelength of the baseball is 1.27×10⁻²⁵nm

λ=h/m

h is the Planck Constant =6.63×10⁻³⁴Js

m = mass = 148×10⁻³

=0.148kg

v= velocity =35.1m/s

λ=6.63×10⁻³⁴/0.148×35.1

λ=1.27×10⁻³⁴m

λ=1.27×10⁻²⁵nm

When learning about quantum mechanics, the de Broglie wavelength is a crucial idea. De Broglie wavelength is the wavelength that is connected to an object in relation to its momentum and mass. Typically, a particle's force and de Broglie wavelength are inversely related.

Some people believe that matter has both a wave- and a particle-like nature. De Broglie wavelength, so named after the discoverer Louis de Broglie, are the characteristics of a physical object that fluctuate in time or space while acting like waves. Matter waves are another name for it. It is strikingly reminiscent of the experimentally demonstrated dual nature of light, which exhibits both particle and wave behavior.

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The distance the skier will go before they stop is 10193.68m.

Given ; Mass =100kg

coefficient of kinetic friction μ=0.05m

u=100m/s

v=0

μg=a

a= μg=0.05 x 9.81=0.4905 m/s²

v²-u²=2as

[v²-u²]/2a= s

-100²/2(0.4905)

s=10193.68m (neglecting the negative sign)

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Answer:

Electricity is the rate at which electrical energy is converted into motion, heat, or other forms such as electromagnetic fields.

Answer: an upward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the X-axis

just took the test

an upward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the X-axis best describes a graph that would represent the relationship shown in the table

A graph is represented as pictorial form  the of data or numeric values in an organized manner which enables user to represent large amount of data in visual form.

There are 2 types of questions and the features of graphs are interpretation of given graphs or selecting a graph based on a verbal description.

The bar graphs are the most common type of graph, other graphs are dot plots, histograms, line graphs and scatterplots.

A Bar Graph is represented as the graphical display of data using rectangular bars of different parameters like heights, The structure can be represented  in the y axis contains values, and the x axis contains categories or time periods.  

A dot plot is a simple graphical representation  which shows the frequency with which items appears in a data set and present data on the x axis.

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