A car accelerates from rest at -3m/s^2

1. What is the velocity at the end of 5 seconds?
2. What is the displacement after 5 seconds?

You have found that tides on earth are determined primarily by the position of the moon, with the sun playing only a secondary role. The moon play a greater role in causing tides than the sun, because of the Sun's higher gravitational pull on Earth, the planet revolves around it. Tides, on the other hand, are brought on by variations in the gravitational pull on Earth.

Despite the fact that the gravitational pull between Earth and the Moon is weaker than the attraction between Earth and the Sun, the Moon's considerably closer proximity to Earth causes this attraction to fluctuate more widely throughout the planet.

Because of this, the Sun only has a little secondary effect on tides, which are predominantly caused by the Moon.

Stars are celestial bodies that generate their own energy through the fusing of gases. They resemble bright orbs that burn gas and produce energy. Our solar system's star, the Sun, generates energy through the fusion reaction in which helium transforms into hydrogen.

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The complete question is ''You have found that tides on Earth are determined primarily by the position of the Moon, with the Sun playing only a secondary role. Why does the Moon play a greater role in causing tides than the Sun?- Because the gravitational attraction between Earth and the Moon varies more across Earth than does the gravitational attraction between Earth and the Sun

The mass of the cannonball is 12.5 kg.

Force on cannonball = 2500N

Acceleration on cannonball= 200 m/s²

From, Newton's second law of motion

Force = Mass × Acceleration

Mass = [tex]\frac{Force}{Acceleration}[/tex] .......(i)

Now, putting the values in equation (i),

Mass = [tex]\frac{2500}{200}[/tex]

Mass = 12.5 kg

Thus, the mass of the cannonball is 12.5 kg.

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An object attached to one end of a spring makes 20 vibrations in 10 seconds, its angular frequency is 12.6 rad/s.

The quantity of complete waveforms produced per second is a wave’s frequency (f). This is equivalent to the quantity of cycles per second or oscillations per second.

In this instance, a spring-attached object causes 20 vibrations in 10 seconds. 20 vibrations in 10 seconds, in other words. S creates two vibrations in a second.

As a result, the object’s frequency is 2 Hertz.

Angular frequency, abbreviated “[tex]\omega[/tex]” is a scalar measure of rotation rate in physics. It describes the rate of change of the argument of the sine function, the rate of change of the phase of a sinusoidal waveform, or the angular displacement per unit of time.

у = 20/10

= 2 vibrations in 1 second

Then w = 2[tex]\pi[/tex]v = 4 x 3.14

=12.56 rad /s

Thus, the angular frequency is 12.56 rad /s

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Distance = Displacement = 8 meters.

While a person's displacement is equal to the shortest path taken, their total distance travelled is equal to their whole trip.

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Answer:

A "resistor" can be connected in "parallel" to the meter

Suppose that an ammeter reads from 1-10 amps.

Now add a resistor in parallel to the ammeter where the resistor has the same value as the resistance of the ammeter - Now the ammeter will read 1-20 amps because only 1/2 the current passes thru the ammeter.

In the mass spectrum of pentane, the presence of a peak with m/z = 15 is most likely due to the detection of A) methyl radical cation that has been lost from the spectrum.

The m/z ratios of any ions contained in a sample displayed against their intensities that forms a mass spectrum.

The height of the peaks in any kind of mass spectrum denotes the relative abundance of the various components in the sample, and each peak in a mass spectrum displays a component that a distinct m/z is in the sample.

Only when a molecule has been transformed into a gas-phase ion can a mass spectrometer calculate the mass of the molecule.

In order to do this, it gives molecules an electrical charge and transforms the flow of electrically charged ions that results into a proportional electrical current that a data system can subsequently read.

Whenever any molecules are ionized in an ionization box, many different kinds of ions have been created.

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Complete Question

In the mass spectrum of pentane, the presence of a peak with m/z = 15 is most likely to the detection of: _________-

A) Methyl Radical

B) Ethyl Radical

C) Propyl Radical

D) Butyl Radical

Identifying a key quotation is a good way to turn an interview into a human interest story. Option A

This is further explained below.

Generally, Locating quotes that provide light on the underlying ideas of the text.

In conclusion, Being a good listener is the single most significant factor in determining one's level of success. "Accept both who you are and the heavenly purpose that you were created for.

Determine the obstacles that you face in your life and work on cultivating the self-discipline, fortitude, and strength necessary to overcome them in a way that is long-lasting so that you may continue to make progress.

Identifying a key quotation is a good way to turn an interview into a human interest story.

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Answer:

0.0917 m

Explanation:

Fnet = 0

Fb1 + Fb2 - mg = 0

ρ1V1g + ρ2V2g - mg = 0

(725)V1(9.8) + (1000)V2(9.8) = (6.70)(9.8)

7105V1 + 9800V2 = 65.7

Volume of cylinder = pi * r^2 * h = 8.48 * 10^-3 m^3

let x = percentage of volume in oil

V1 = (8.48 * 10^-3)x

V2 = (8.48 * 10^-3)(1-x)

7105(8.48 * 10^-3)x + 9800(8.48 * 10^-3)(1-x) = 65.7

x = 0.764

Height in oil = Total height * x = (0.120 m)(0.764)

Height in oil = 0.0917 m

The  pressure at the bottom of the cylinder is two atmospheres at the depth d will be 202650 Pa.

The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure. In comparison to the surrounding pressure, gauge pressure is the pressure. Pressure is expressed using a variety of units.

Calculate the size of that surface. Check to see that both numbers are expressed in the proper units, such as newtons/meters squared or pounds/inches squared. By the area, divide the force. The units of measurement for your pressure are pascals (Pa) or pounds per square inch (psi).

[tex]P = {P_{{\rm{atm}}}} + {\rho _1}gd + {\rho _2}g{h_2}[/tex]

[tex]{h_2} = \left( {1 - d} \right)\\P = 2\;{\rm{atm}}\\\begin{array}{c}\\P = \left( {2\;{\rm{atm}}} \right)\left( {\frac{{101325\;{\rm{Pa}}}}{{1\;{\rm{atm}}}}} \right)\\\\ = 202650\;{\rm{Pa}}\\\end{array}[/tex]

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The graph representing a linear relationship between mass [m] on the x-axis and kinetic energy (E[k]) on the y-axis is the correct graph.

Mechanical energy is the energy of either an object in motion or the energy that is stored in objects by their position. Mechanical energy is the sum of Kinetic and Potential Energy. Mathematically -

E [M] = E [K] + E [P]

Given is a set of statements that represents the relationship between mass and Kinetic energy of the body.

The Kinetic energy of the body is the energy of the body by virtue of its motion. Consider a body of mass 'm' moving with velocity 'v' in a straight line. The Kinetic energy of the body will be -

E [K] = 1/2 mv²

If we assume that the velocity remains constant, than the value of 1/2 v² will become constant (say A). Then, the equation can be written as -

E [K] = A × m    ... Eq. 1

The general equation of a straight line representing a linear equation whose y - intercept is 0 is -

y = mx     ... Eq. 2

Comparing Eq. 1 and Eq. 2, we get -

y = E [K]   {Kinetic energy}

m = A    {slope of line}

x = m    {mass}

For A = 1

E [K] = m

E [K] [tex]\alpha[/tex] m

The graph will be linear in relationship with Kinetic energy along y - axis and mass along the x - axis. The graph is attached with the answer.

Therefore, the graph representing a linear relationship between mass [m] on the x-axis and kinetic energy (E[k]) on the y-axis is the correct graph.

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The independent variable is the type of rose, and the dependent variable is the quantity of flowers.

In mathematical modelling, statistical modelling, and experimental sciences, there are dependent and independent variables. Dependent variables get their name because, during an experiment, their values are investigated under the presumption or requirement that they are dependent on the values of other variables due to some law or rule.

Consider what is being recorded first in order to identify the variables; in this situation, it would be the variety and quantity of roses cultivated.

Asking yourself which one depends on which other will help you distinguish between which is reliant and which is independent.

Is it more likely that the number of flowers determines the type of rose?

Or does the type of rose affect how many blossoms are present?

Saying that a rose's kind depends on how many blossoms it has is illogical.

However, it does make sense to state that the type of rose affects how many blossoms are there.

As a result, the independent variable is the type of rose, and the dependent variable is the quantity of flowers.

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Answer:

θ = 1.22 λ / D

Above is the formula calculated for a circular aperature

If the wavelength is multiplied by 5 then the angle of resolution would be 5 times as great or 5 * θ

5 * θ = .5 seconds

The asthenosphere is an important layer because it responds to forces by flowing as it is relatively weak.

This is because the asthenosphere is solid, but mobile, meanwhile the lithosphere is solid and relatively rigid.

The Earth's upper mantle contains an area known as the asthenosphere, which is ductile and mechanically fragile. Between 80 and 200 km (50 and 120 mi) below the surface, it is located beneath the lithosphere, and it can reach a depth of 700 km (430 mi). It is difficult to determine the asthenosphere's lower border, though.

Despite the asthenosphere being almost completely solid, its mechanical weakness is caused by a tiny quantity of rock melting (less than 0.1% of the rock). This is the primary source of magma on Earth because as it wells higher, more extensive decompression melting of the asthenosphere occurs.

It is where some magmas that erupted above subduction zones or in areas of continental rifting, as well as mid-ocean ridge basalt (MORB), originated.

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Time taken by the boat to accelerate is 1 min 4 s.

V[tex]f_{2}[/tex] - V[tex]o_{2}[/tex] = 2 a X ,

a = Vf2 - Vo2 / 2 X

= (26 m/s)2 -(13m/s)2 /  2(1250m)

= 507 m2/s2 / 2.5 m = 0.203 m/s2

Solve for time using the equation with acceleration known.

Vf = at + Vo ,

t = Vf - Vo / a = 26m/s -13m/s/ 0.203 m/s2

  = 64 s

  = 1 min 4 s

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41.4 x 104 Nm2/C is the electric flux through the sheet.

The electric flux through a planar area A is calculated as the product of the electric field, the area of the plane, and the cosine of the angle between the electric field and a vector that is perpendicular to the area.

Φ = E A cos θ -----1  

By the question;

E = 4.6 x 10⁴ N/C

A = Area of the square = l²          [l = length of the square]

=> A = (3m)² = 9m²

θ = 0°    [since the electric field is perpendicular to the square sheet, then the area vector is parallel to the field]

Substitute the values in equation 1

Φ = 4.6 x 10⁴ x 9 x cos 0°

Φ = 4.6 x 10⁴ x 9 x 1

Φ = 41.4 x 10⁴ Nm²/C

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The effect is that the electrons shield the nucleus from the magnetic field.

A magnetic field is a vector field that explains the magnetic influence on moving electric charges, electric currents, and magnetic materials.

A force perpendicular to the charge's own velocity and the magnetic field acts on it when it moves through a magnetic field.

Moving electric charges generate magnetic fields.

Everything is constructed of atoms, and each atom has an orbiting nucleus that is composed of protons and neutrons.

Compass, motors, refrigerator magnets, railroad tracks, and modern roller coasters are all examples of objects that use magnetic force.

Charges that travel across its areas feel a force. All moving charges produce a magnetic field.

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Time taken by the soccer ball in the air when we neglect the air resistance is 2.75s

projectile motion - It is the motion of an object which projected into the air  and moving under the gravity.

a soccer ball is kicked at an angle of 64° to the horizontal

initial speed = 15 m/s

Initial velocity in vertical direction is given as

[tex]V_{v} = V_{0}sin \theta[/tex]

[tex]V_{v} = 15sin(64)[/tex]

[tex]V_{v}[/tex] = 15× 0.8987

    = 13.48m/s

time taken to reach the maximum height is given by

T =[tex]V_{v}[/tex] /g

where

[tex]V_{v}[/tex]  is the velocity

g is the gravity

Ball comes downward with the same speed

then that time period is given by.

2[tex]V_{v}[/tex] /g

= 2× 13.48 /9.8

T = 2.75s

Time taken by the soccer ball in the air when we neglect the air resistance is 2.75s

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The measurements are accurate but not precise.

Measurement is the basis for all scientific and technological developments. The measurement of any quantity is not perfect and there are always some uncertainties that cause errors in the measurements. While measuring anything we define the measurements in terms of precision and accuracy.

The accuracy of a measurement is a measure of how close the calculated value is to the true value. While precision tells to what resolution or limit the quantity is measured. For example, suppose the true value of a length is 10.578 cm. In the first case, the value comes out to be 10.4 cm. In the second case, the value comes out to be 10.378 cm. In the above example, the first value is accurate because it is close to the true value but the second value is precise because it contains more digits after the decimal.

Similarly, in the above case, a block with a known value of the volume of 15 cm^3 and the measurements are 14.6, 14.7, 14.7, 14.6 cm^3. As the values are close to the true value but they contain less number of digits after decimals, these values are accurate but not precise.

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Answer:

2.39 °C

Explanation:

Specific heat of water = 4187 j / kg °C     (You eaither have to be given this, or know this  or look it up)

100 g of water = .1 kg of water

1000 j  / (.1 kg * °C) = 4187  j / (kg °C)

solve for C = 2.39°C

The time taken for the car to cover the distance of 125 m is 5 seconds

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

The time taken for the car to cover the 125 m distance can be obtained as illustrated below:

s = (u + v)t / 2

125 = [(10 + 40) × t] / 2

125 = (50 × t) / 2

Cross multiply

50 × t = 125 × 2

50 × t = 250

Divide both sides by 50

t = 250 / 50

t = 5 s

Thus, the time taken by the car to cover the 125 m distance is 5 seconds

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Answer:

advantages is you can look at the stars disadvantage is don't look at the sun you will go blind

Answer:

While waves that travel within the depths of the ocean are longitudinal waves, the waves that travel along the surface of the oceans are referred to as surface waves. A surface wave is a wave in which particles of the medium undergo a circular motion.

Explanation:

Are you satisfied or I should continue in the comments.

The acceleration is aₓ = 7.54 m/s².

The rate at which an item changes its velocity is known as the vector quantity known as acceleration.

When an object's velocity changes, it is said to be accelerating.

uₓ(t) = (0.980 m/s³) t²

The time-dependent derivative of velocity is acceleration.

aₓ(t) = 2 (0.980 m/s³) t

aₓ(t) = (1.96 m/s³) t

When,

uₓ = 14.5 m/s, the time is:

14.5 m/s = (0.980 m/s³) t²

t = 3.85 s

Connecting to the acceleration equation,

aₓ = (1.96 m/s³) (3.85 s)

aₓ = 7.54 m/s²

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I think that our nation's leaders prioritize space education because they see the potential benefits for us in the future.

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The average speed for the round trip is 90.51 km/hr when a car travels up a hill at a constant speed of 33 km/h and returns down the hill at a constant speed of 72 km/h.

To find the average speed for the round trip, the given values are,

constant speed v₁ = 33 km/hr

constant speed v₂ = 72 km/hr

         Average speed = total distance traveled / total time taken

Let d is the total distance traveled by the car.

Thus , distance traveled in each journey is d/2.

So, the time taken for going up the hill  is t₁ = (d/2) / v₁

= (d/2) / 33

= d / 66

Next, the time taken for going down the hill is t₂ = ( d/2 ) / v₂

= ( d/2) / 72

= d / 144

Thus, average speed is v avg = 2d / ( t₁ + t₂ )

= 2d / ( ( d/66)+(d/144))

= 2d / (210d / 9504)

= 2d / 0.0220959

= 90.51 km/hr.

The average speed of the round trip is 90.51 km/hr.

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Answer:The buildup of thermal energy in a collapsing gas cloud leads to thermal pressure that can halt the gravitational collapse. What must happen for the gravitational collapse to continue? The cloud must radiate away some of its thermal energy.

Explanation:

On June 21 the sun’s altitude will be highest for an observer at 23 degrees north latitude.

In the Northern Hemisphere, June 21 is both the longest day and the shortest night of the year. Here summer solstice occurs.

It is during this time that the Northern Hemisphere is closest to the Sun, and the Sun shines directly overhead on the Tropic of Cancer (23.5° North). North and south of the equator, the Tropics of Cancer and Capricorn, respectively, are located at latitudes of 23.5°.

At 5:14 a.m. Eastern time, the summer solstice occurs in 2022. As far north as the sun ever shines in the sky, it is exactly overhead the Tropic of Cancer at this particular moment.

The June solstice depends on the moment the Sun crosses its northernmost point from the celestial equator, not on any particular day or time on the calendar.

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Answer:

The Force

Explanation:

Gravitational Acceleration is the Acceleration of a free fall of a object.

Answer:

Because it has a limit of up to 80°C

Explanation: