We know from experience that the harder we throw a ball (apply more force), the faster it will be
moving (greater initial velocity resulting from acceleration). If you throw a 1 kg softball as hard
as you can, and it is traveling at 20 m/s when it leaves your hand, how fast do you think a 5 kg
shot put would travel with the same throw?

The maximum magnetic field Bmax is 5.833 × 10⁻⁷ T

Given that a linearly polarized microwave of wavelength 1.50cm is directed along the positive x axis and the electric field vector has a maximum value of 175V/m and vibrates in the x y plane.

And Assuming the magnetic field component of the wave can be written in the form B=Bmax sin (k x-Ω t), we need to find the expression for the maximum magnetic field Bmax.

Since the microwave is an electromagnetic wave, we use the relationship between the maximum magnetic field and maximum electric field of an electromagnetic wave is given by c = E/B where

Making B subject of ther formula, we have

B = E/c

Given that

Substituting the values of the variables into the equation, we have

B = E/c

B = 175 V/m ÷ 3 × 10⁸ m/s

B = 58.33 × 10⁻⁸ T

B = 5.833 × 10⁻⁷ T

So, the maximum magnetic field Bmax is 5.833 × 10⁻⁷ T

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Answer:

Gases

Explanation:

The most important state of matter for the survival of human beings is the gaseous state.

 Gases are one of the most important state of matter. They are the bulk composition of the atmosphere and they condition many climatic phenomenon.

To humans beings, gases are vital for the following reasons,

Answer:

Inversly or Indirectly

Explanation:

the voltage (V) and inversely proportional to the resistance (R).

Hope it helps!

Answer:

C - it will increase the resistance in the circuit

Explanation:

edge 2021

It will increase the resistance in the circuit will the extension cord have on the circuit. So, the correct option is C.

Resistance is defined as the measure of opposition to the flow of current in an electrical circuit and is measured in ohms which is represented by the Greek letter omega (Ω). Ohm is named after Georg Simon Ohm (1784–1854), the German physicist who studied the relationship between voltage, current, and resistance.

Resistance is also defined as the ratio of the applied voltage to the current flowing through it. The resistance in the circuit will increases when the extension cord have on the circuit. It is represented as:

R = VI

where, R = resistance (Ohms, Ω)

V = voltage difference which is between the two ends of a resistor (Volts, V)

I = the current which flows through a resistor (Amperes, A)

Therefore, the correct option is C.

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Answer:

true

Inertia. Sometimes this first law of motion is referred to as the law of inertia. Inertia is the property of a body to remain at rest or to remain in motion with constant velocity.

please give brainlist I actually needed it.

The radius of the electrons is 2.14 × 10⁻⁵ m.

A magnetic field, often known as a vector field, describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A force acting on a charge while it travels through a magnetic field is perpendicular to both the charge's motion and the magnetic field.

Electrons go downward and positive ions move upward in a long, straight, vertical lightning stroke, creating a current of magnitude I = 20.0 kA.

The speed of the electron through the air if v = 300 m/s at r = 50 m east from the stroke's center.

Let the magnetic force be F, and B be the magnetic field.

Counterclockwise horizontal arcs of field lines are produced by the upward lightning current.

Then,

[tex]B = \frac{\mu_{0} I}{2 \pi r}[/tex]

[tex]B =\frac{4\pi \times 10^{-7} \times 20 \times 10^{-3}}{2 \pi(50)}[/tex]

B = 8 × 10⁻⁵ T north by the right-hand rule.

Then the radius of the electron will be:

r = mv / qB

[tex]r = \frac{(9.11 \times 10^{-31}) \times (300)}{(1.6 \times 10^{-19})(8 \times 10^{-5})}[/tex]

r = 2.14 × 10⁻⁵ m

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Answer:

Explanation:

The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled.

Answer:

[tex]speed = \frac{distance}{time}[/tex]

Explanation:

The equation linking speed, distance and time is speed equals to distance divided by time!

Hope this helps! Have a great day :)

The intensity that results if the frequency is increased to for while a constant displacement amplitude is  I = (pv'²s²v)/8π²

The amplitude of a periodic variable is a measure of its change over a single period (such as a period of time or space). The amplitude of an aperiodic signal is its magnitude relative to a reference value. Amplitude has several definitions, all of which are functions of the magnitude of the difference between extreme values ​​of a variable. In older texts, the phase of a periodic function is sometimes called the amplitude. Peak amplitude is commonly used in audio system measurements, telecommunications, etc. A measurand is a signal that oscillates above and below a reference value but is not sinusoidal. If the reference is zero, this is the maximum absolute value of the signal. If the reference is the mean (DC component), the peak amplitude is the maximum absolute difference from that reference.

I = 1/2 pw²s²v = (1/8π)pv²s²v

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Answer

v= 1/R mark me brainliest pls

Answer:

(a) 15 N

(b) 39.2 N

(c) The coefficient of sliding friction is 2.61[tex]\bar 3[/tex]

Explanation:

The given parameters are;

The mass of the brick = 4.0 kg

The nature of the surface on which the brick rests = Horizontal

The force needed to move the brick from rest = 15 N

(a) Given that the body is not accelerating, the force applied = The frictional force = 15 N

Which can also be expressed as follows;

The magnitude of the frictional force = The force needed to push the brick to move from rest and move with a constant velocity = 15 N

(b) The magnitude of the normal force = The force acting at right angles to the surface opposite in direction and equal in magnitude to the weight of the brick, so as hold the brick and prevent it from passing through the surface. which is given as follows;

The weight of the block = The magnitude of the normal force =The mass × The acceleration due to gravity = 4.0 × 9.8 = 39.2 N

The magnitude of the normal force = 39.2 N

(c) The frictional force, F = [tex]\mu _k[/tex] × Normal force

Where;

[tex]\mu _k[/tex] = The coefficient sliding friction

By substituting the known values gives

15 = μ × 39.2

[tex]\mu _k[/tex] = 15/39.2 = 2.61[tex]\bar 3[/tex].

Answer:

Atoms and molecules

Explanation:

The Earth's magnetic field lines appear to emanate perpendicularly from the poles and go round along the Earth from the  South Pole to the North Pole. Therefore, the Earth's magnetic field is generally not parallel to the ground at every location. It is parallel to the earth at the equator near the earth's surface.

The Earth's magnetic field, also known as the geomagnetic field, is a magnetic field that extends from the Earth's interior into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.

The magnetic field  varies in strength over the earth's surface. It is strongest at the poles and weakest at the equator.

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The air particles will vibrate both in rightward and leftward direction as the a longitudinal sound wave travels from left to right through the air in a room.

A sound wave is the pattern of disruption brought on by the movement of energy moving through a medium as it propagates away from the source of the sound (such as air, water, or any other liquid or solid matter).

Pressure waves are produced when an object vibrates, such as a ringing phone, and these waves are known as sound waves. The surrounding medium's particles are disturbed by the pressure wave, and those particles disturb the particles next to them, and so on.

Like ocean waves, the disturbance's pattern causes outward movement in all directions. Usually in all directions and with decreased intensity as it gets further away from the source, the wave transmits the sound energy through the medium.

At least as far back as the first century B.C., people have believed that sound travels in waves. Both the Roman philosopher Boethius and the Roman architect and engineer Vitruvius proposed that sound might travel in waves. Galileo Galilei is credited as being the founder of the current science of sound (1564-1642).

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The direction of the field the current creates at a point on the wall outside the frame to the right is horizontally towards you.

The current will flow from the bottom of the wire to the top if the magnetic field around a vertical electrical wire is counterclockwise in direction.

A magnetic field, a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. When a charge moves through a magnetic field, a force that is perpendicular to both its own velocity and the magnetic field operates on it.

A permanent magnet's magnetic field pulls on ferromagnetic materials like iron and draws or repels other magnets. Since the direction and strength of a magnetic field can vary depending on the location, it can be mathematically described by a function that gives each point a vector.

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Answer:

9

Explanation:

about

No, it is not true that wet soil is easily picked up by the wind and carried away.

A strong wind rolls and lifts large volumes of soil and dust particles carrying them away and depositing them at some distant place.

In geology, we study that wind has the ability to carve the earth's surface through erosion and weathering processes.

However, wind can not pick up and carry only dry and lightweight particles of soil and dust.

It can not carry wet soil or heavy particles like rocks, wet sand, pebbles, and sediments from one place to another.

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The answer is C, as it states it's made of ONLY carbon atoms, not any others.

The answer is also A, because Graphite is still considered a compound.

A pencil "lead" is actually made of graphite. graphite is made exclusively of carbon atoms. The two terms that best describe graphite are pure substance and element. The correct options are options (c) and (d).

Graphite is considered a pure substance because it consists solely of carbon atoms. It is not a mixture because it does not contain different types of atoms or compounds.

Additionally, graphite is classified as an element because it is composed of only one type of atom, carbon.

Therefore, the correct answer is C. pure substance and D. element.

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The angle he should throw the second snowball to make it hit the same point as the first is 27⁰.

The range of the projectile is the distance traveled by a projectile in the horizontal direction.

There is no acceleration in this direction since gravity only acts vertically.

The range of a projectile is given as;

R = u²sin(2θ) / g

where;

For the range of a projectile the angle of projection is related in the following equation.

when the initial angle of projection = θ

new angle of projection so that it will have the same range =  90 - θ

new angle = 90 - 63⁰ = 27⁰

check;

sin(2 x 63) = sin(2 x 27) = 0.809

Thus, the angle he should throw the second snowball to make it hit the same point as the first is 27⁰.

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Answer:when the heat is absorbed by a system, the reaction is endothermic

Explanation:

Hello!

Δv = 0.1 m/s

Use the equation F = m · a to solve for the acceleration:

5 = 15 · a

a = 1/3

The equation to solve for acceleration can be rewritten to solve for the change in velocity:

Δv / t = a

Δv = at

We are given the acceleration and time, therefore:

Δv = (1/3)(0.3)

Δv = 0.1 m/s

Answer:

D. μs = Fs/Fn

Explanation:

The static friction coefficient, is always less than 1, for this reason, the friction force will always be less than the force of the body weight.

Answer:

D is correct. I just did it!!

Explanation:

Answer:

2.25

Explanation:

2.25 - 4.00

2-4=2

25-00=25

= 2.25

2.25 - 4.00 = 2.25 because 2-4=2 and 25-00=25=2.25

The voltage difference across the circuit is equal to 9 V when 2.25 A current flows through the circuit.

Ohm’s law states that the voltage difference across any conductor is directly proportional to the current flowing through that conductor. Assuming temperature and all the physical conditions remain constant.

Ohm’s law can valid only if the temperature remains constant. Ohm’s SI unit is rho (Ω), and the current raises the temperature.

The mathematical formula of potential difference provided by Ohm/s law is:

V = IR

Where V is the potential difference and R is the resistance and I the current flowing.

Given, the resistance of the circuit, R = 4 ohm

The current flowing through the circuit, I = 2.25 A

The potential or voltage difference across the circuit will be:

V = I × R

V = 2.25 × 4

V = 9 Volt

Therefore, the potential difference across the circuit is equal to 9 V.

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The system of linear equations representing the above situation are -

y = 1.17x + 2.60

y = 0.59x + 5

The graph plotted shows the point of intersection of two lines which is the common solution of this system of equations. (Graph is attached at the end).

We have two taxi services for a ride to airport.

We have to write the system of linear equations to represent the situation.

In algebra, a system of equations comprises two or more equations and seeks common solutions to the equations.

According to the question, we have -

Assume the distance between your home and airport is x miles and the total fare is $y.

For friendly's cab company -

for  [tex]$\frac{1}{6}[/tex]  of a mile or 0.17 mile = $0.20

for 1 mile = $ (0.20/0.17)

for x miles = $ (0.20 / 0.17)x

Now, the following equation represents the charges scheme for friendly's cab company -

y = 2.60 + 1.17x

y = 1.17x + 2.60

For Anderson's taxi company -

for  [tex]$\frac{1}{6}[/tex]  of a mile or 0.17 mile = $0.10

for 1 mile = $ (0.10/0.17)

for x miles = $ (0.10 / 0.17)x

Now, the following equation represents the charges scheme for Anderson's taxi company -

y = 5 + 0.59x

y = 0.59x + 5

Hence, the system of linear equations representing the above situation are -

y = 1.17x + 2.60

y = 0.59x + 5

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[ The question given is not complete. The complete question in the image is attached below after the plotted graph]

Answer:

if you dont give me a question I can't answer sorry

By using the thrust force, the acceleration is  0.001 m/s².

We need to know about force to solve this problem. According to second Newton's Law, the force applied to an object will be proportional to mass and acceleration. Hence, it can be written as

F = m . a

where F is force, m is mass and a is acceleration

From the question above, we know that

F = 1 N

m = 1000 kg

By substituting the given parameters, we can calculate the acceleration

F = m . a

1 = 1000 . a

a = 1/1000

a = 0.001 m/s²

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Answer:

Option (C)

Explanation: According to the law of Uniformitarianism, the geological processes that is going on now, has undergone in the past and will be continued in the same way in the future too.

Due to this constant ongoing earth dynamic processes, in terms of millions of years, the previously exited landforms have undergone weathering and erosion, and subsequently deposition also has taken place, and gave the shape of the present existing landforms. These processes has occurred slowly and will be continued in the same way in the future also.

Thus, the correct answer is option (C).

Answer:

True

Explanation: