5. Calculate the area if the force is 368N and the pressure is 28Pa..

Let's take this problem step-by-step:

What does this problem want to solve:

 ⇒ find two pendulums that will swing back and forth in the least amount

     of time

Therefore:

 ⇒ must find the equation that calculates that period or swing time of a

     pendulum

     Equation: [tex]T = 2\pi \sqrt{\frac{L}{g} }[/tex]

Based on the equation:

  ⇒ the longer the string is ⇒ the greater the swing time

Thus:

 ⇒ pendulum Y and Z will have the least amount of swing time

Answer: (B)

Hope that helps!

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Spurs are probably the result of self-sustaining star formation.

The gigantic form of the magnificent doppelganger spiral patterns that spiral outward from the galactic cores gave spiral galaxies their name. These light arms of spiral galaxies are frequently seen in optical pictures to be speckled with bright star-forming areas at regular intervals.

Smaller structures spread forth and rearward into the interarm area from each major spiral arm. Spiral-arm also known as spurs are the name given to these substructures. Sometimes the spurs are also filled with star-forming clusters. As a consequence, we may draw the conclusion that spurs most likely emerge from self-sustaining star formation.

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Answer:

See below

Explanation:

Measure the distance and the amount of time to cover that distance

 then speed   =    distance / time

Answer:

s=d/t

Explanation:

s=speed

d=distance

t=time

Just basic formula stuff

It can be expected in this city that the hours of sunshine will significantly increase after the month of July

The monthly hours of sunshine in the city is the average of daily sunshine in a month.

The trend as seen on th graph shows that monthly hours of sunshine is maximum between the months of December and January. Afterwards the monthly sunshine hours decreases.

Therefore, it can be expected in this city that the hours of sunshine will significantly increase after the month of July.

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Answer:

1. An object has a mass of 8.0 kilograms. A 2.-newton force displaces the object a distance of 3.0 meters to the east, and then 4.0 meters to the north. What is the total work done on the object? 1)10 J 2) 14 J 3) 28 J 4) 56 J I found the resultant of the two distances, which is 5 m, I used 5 m * 2 N=10 J, but it’s not the answer. 2. A 20-newton block is at rest at the bottom of a frictionless incline, since I can’t show you the diagram, I will describe it. Supposed a right triangle, the vertical height is 3 m, and the base is 4.0 m. Then the hypotenuse is the incline and the block is at the bottom. The question is: How much work must be done against gravity to move the block to the top of the incline? I know that conservative forces are forces for which the work done does not depend on the path taken but only on the initial and final positions. But here I Know I should use 3 m * 20N=60 J. but the thing is it starts from the bottom which is the bottom of the incline, and ends at the top, then it should be the length of the hypotenuse? But if it’s 3 m, then it should have started from left end of the base, not the right end of the base which is the bottom of the incline.

Reference: https://www.physicsforums.com/threads/what-is-the-total-work-done-on-the-object.241750/

The velocity of the particle moving along the straight line at any time, t is determined as v = 4t³/3 - 2t + C.

The velocity of an object is the rate of change of displacement with time. It is also the integral of acceleration of the object.

a = 4t² - 2

v = ∫a

v = 4t³/3 - 2t + C

Thus, the velocity of the particle moving along the straight line at any time, t is determined as v = 4t³/3 - 2t + C.

Complete question:

A particle moves along a straight line such that its acceleration is a=(4t^2-2). Find its velocity at any time, t.

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The specific heat capacity of the liquid is 2.51 x 10³ J/kg⁰C.

The specific heat capacity of the liquid is calculated as follows;

Q = mcΔФ

where;

c = Q/mΔФ

c = (65 x 120)/(0.78 x 3.99)

c = 2.51 x 10³ J/kg⁰C

The complete question is below:

An electrical resistor immersed in a liquid produces 65.0 W of electrical energy for 120 s. The mass of the liquid is 0.780 kg and its temperature increases from 18.55°C to 22.54°C. a) Find the average specific heat capacity of the liquid in this temperature range.

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To find how far away the school is:

3m/s * 30 s = 90m

Hope it helps!

Answer:

Jesus

Explanation:

he is the way

The electric force on the charges will be equal and opposite in nature and the magnitude will be 8.5536 × 10⁻¹³ Newton.

Formula for electrostatic force is F = ( K q1 q2 )/ r²

where q1 and q2 represent the charges and r represents the distance between them and the value of K is 9 × 10⁹.

In question we have given

value of q1 = 5.4 x 10⁻⁷ C

value of q2 = 1.1 x 10⁻¹⁷ C

distance between the (r) = 0.25 m

Applying the formula

F = ( K x (5.4 x 10-7) x (1.1x10-17) )/ 0.25²

F = ( (9 × 10⁹ ) x (5.4 x 10-7) x (1.1x10-17) )/ 0.25²

F = ( (9 × 5.4 × 1.1) × ( 10⁹ × 10⁻⁷ x 10⁻¹⁷) )/ ( 6.25 × 10⁻² )

F = ( 53.46 × 10⁻¹⁵) / ( 6.25 × 10⁻² )

F = 8.5536 × 10⁻¹³ Newton

Electrostatic force = 8.5536 × 10⁻¹³ Newton

So, The point charges are possessing equal and opposite electrostatic force of magnitude 8.5536 × 10⁻¹³ Newton.

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The maximum energy stored in the spring bumpers is given as ¹/₂kx².

The maximum energy stored in a spring is given by the following equations;

E = ¹/₂kx²

where;

Thus, the maximum energy stored in the spring bumpers is given as ¹/₂kx².

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Answer:

Moving electrons

Explanation:

The magnetic force is a force that is perpendicular to the direction of a moving charge. When two charges are not moving, the electrostatic force is along the line joining them (or the relative spacing). The effects of the static (Coulomb) force change direction due to the finite speed c, giving birth to a 'component' normal to the direction of the relative motion of the two charges (very much like the rain changing direction when you run or drive). When the speed of light c is reached, all electrostatic force becomes magnetic. When the relative separation distance is equal to zero, all forces become electrostatic. This is akin to linear acceleration (and the forces associated with it) shifting direction from being along the motion to normal to the motion as the route becomes totally round, giving birth to centrifugal forces. The magnetic force may be calculated in its general and relativistic forms using just the delayed potential form of the static Coulomb force. R3tarded potential Whereas two non-moving electrons repel electrostatically, two moving electrons can either repel or attract magnetically depending on their motion direction. When the speed of two electrons approaches c, they will generally attract with minimal likelihood of repulsion. It is also stated here that for some combinations of relative velocity and separation distances, the repulsion force can equate the attraction force, resulting in an asymptotic freedom condition in which the electrons are free from these two opposing forces. The electron possesses an inherent magnetic field, which may be mathematically represented as the outcome of a moving charge. The value and radius of the motion (the loop area) to form the magnetic dipole moment p=i a = (e v) an are not known as separate values, but only as a product p(the magnetic dipole moment), where e,v,a are the electron charge, speed, and motion loop area, respectively. The total of the magnetic field's effects equals zero for two electrons at rest with opposing polarity, known as paired electrons. This state is stable in matter because the total energy is lower. The magnetic field of a permanent magnet is the consequence of the chemical composition locking all of the lone electrons in a permanent magnetic material in their place. In a typical magnetic material, such as iron, such electrons only unify their pole orientation due to the action of an applied magnetic field. That is why adding an iron core to a coil produces a larger magnetic field. In diamagnetic materials, such alignment occurs (also governed by the chemical composition), resulting in repulsion and levitation rather than typical attraction. The velocity of electrons in wire currents is very modest, as is the generated magnetic force, because the phenomena is of second order (depends on the change of the separation distance rather than the distance itself as in the electrostatic case). However, due to the massive number of electrons involved (Avogadro number size), the magnetic force can become quite strong. The impact is amplified if you use many loops. This is used to power a large engine, for example. It is important to note that gravity is far less than magnetism, yet it may be extremely big owing to the number of particles involved—especially because gravity is always naturally orientated for attraction alone, and there is no cancellation of the gravity field by altering orientation.

Answer:

Higher mass or higher speed

Explanation:

Higher mass will require more force

F= ma       if m goes up  F   goes up   to stop in the same distance

Answer:

C.

Explanation:

Specific heat capacity is defined as the amount of heat energy needed to increase the temperature of 1kg of a substance by 1°C.

The formula for specific heat capacity is as follows:

[tex]C = \frac{Q}{m \Delta T}[/tex]

where:
C   → specific heat capacity

Q   → heat energy required

m   → mass of the object

ΔT → change in temperature.

Extrasolar planets come in a wider range of types than the planets of our solar system due to migration of the extrasolar planets and delay in clearing of the solar nebula.

Extrasolar planets are planets which exists outside our solar system.

Ours solar system consists of the Sun and its planets.

The extrasolar planets come in a wider range of types than the planets of our solar system.

This is due to migration of the extrasolar planets and delay in clearing of the solar nebula.

Also, there are differences in nebula types.

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The tensions in the wires at the given angle of inclination is determined as 434.1 N.

The tension in the wires is calculated as follows;

T = Wsinθ

where;

T = 2500 x sin(10)

T = 434.1 N

Thus, the tensions in the wires at the given angle of inclination is determined as 434.1 N.

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Velocity is directly proportional to wavelength and frequency.

There is direct relationship present between velocity and frequency as well s wavelength. If velocity increases, wavelength and frequency are also increase and vice versa. The higher the speed of a sound, the greater its wavelength for a given frequency.

So we can conclude that Velocity is directly proportional to wavelength and frequency.

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Volcanoes and mountains are the evidences that show plate tectonics.

The presence of volcanos and mountains are the evidences that provides information that the moon has plate tectonic. If there is no volcanoes and mountains on the moon then we can say that there is no plate tectonic on the moon.

So we can conclude that volcanoes and mountains are the evidences that show plate tectonics.

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vf²=vi²+2ad

5²=0+2a.100

a=0.125 m/s²

20²=0+2 x 0.125 x d

400 = 0.25d

d = 1600 m

#a

This is because red color has higher wavelength and it can clear universe and our atmosphere better,

This has the same reason as how we can see only red color during sunset.

#b

[tex]\boxed{\sf z=\dfrac{ \lambda-\lambda_o}{\lambda_o}}[/tex]

lambda_o be x

Put values

[tex]\\ \rm\Rrightarrow 7.6=\dfrac{2\times10^{-6}-x}{x}[/tex]

[tex]\\ \rm\Rrightarrow 7.6=\dfrac{2\times 10^{-6}}{x}-1[/tex]

[tex]\\ \rm\Rrightarrow 8.6=\dfrac{2\times 10^{-6}}{x}[/tex]

[tex]\\ \rm\Rrightarrow x=0.23\times 10^{-6}m[/tex]

[tex]\\ \rm\Rrightarrow x=0.23\mu m[/tex]

The event in the life of a star that begins its expansion into a giant is that almost all the hydrogen in its core that was hot enough for fusion has been turned into helium.

A fusion reaction is defined as the type of nuclear reaction whereby two or more atomic nuclei combine to form a heavier nucleus.

The stars are being transformed into giants through fusion reaction.

A higher amount of hydrogen is found in the core of the star which is being use up in the fusion reaction to form helium.

When the hydrogen in the centre of a star runs out, the star begins to use hydrogen further out from its core. This causes the outer layers of the star to expand and cool.

Therefore, the event in the life of a star that begins its expansion into a giant is that almost all the hydrogen in its core that was hot enough for fusion has been turned into helium.

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Ms. Woodard has traveled a distance of 5 m.

Ms. Woodard's displacement is 1 m.

Answer:

See below

Explanation:

It is a lot of stop and go....various speeds and accelerations .

Answer:

it have two answers a and c

Explanation:

please mark me as brainlyst

Answer: c)how far the object is from the light source
              d)the size of the screen

The size of the shadow depends on the distance of the source of light and on the angle at which the light rays fall on the object. If the source of light is closer to the object, a larger shadow is formed than when the source of light is far from the object.

The angle at which a light strikes an object affects the size and shape of its shadow. Shadows are longer when the light source is at a low angle (side on) and shorter when the light source is at a higher angle (overhead).

The position of the light source can change the size and shape of a shadow. A good example would be, when we are outside on a sunny day, we can see how our shadows change throughout the day. The Sun's position in the sky affects the length of the shadow.

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  hope it helped
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Answer:

-1400 m/s^2

Explanation:

Change in velocity / change in time  = a

    -  70 / .05 =  -1400 m/s^2

The number that indicates typical continental conditions (regional metamorphism) is that showing schist and gneiss rocks.

Regional metamorphism occurs when rocks undergoes changes as a result of high temperatures and pressure deep within the earth's crust.

Regional metamorphic rocks are usually foliated or squashed in appearance.

Examples of regional metamorphism rocks are schist and gneiss rocks.

Therefore, the figure that indicates typical continental conditions (regional metamorphism) is that showing schist and gneiss rocks.

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The highest entropy for the jar of marbles is represented by the marbles are arranged in a random order.

Entropy is the measure of the degree of disorderliness of a system or degree of randomness of a system.

Entropy of a system increases with increase in randomness of the system or disorderliness of the system.

Thus, the highest entropy for the jar of marbles is represented by the marbles are arranged in a random order.

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For Kepler's third law this can be solved as normal ratios

The number of asteroids which will be detected during the second measurement is 1333.34.

These are referred to objects which revolve round the sun and are characterized by their small rocky shape.

Kepler's third law can be used to solved it using normal ratios

1000/60=x/80

100/6 = x/80

6x = 8000

x= 8000/6

x=1333.34asteroids

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answer

64 is C (c) 1-Bromo-3-methylbutane

63 is D

i is secondary ii is primary

Answer:

1.) color

2.) Gamma Rays

Explanation: