A Satellite Is In A Circular Orbit Very Close To The Surface Of A Spherical Planet. The Period Of The (2024)

W = Fdcosθ
W = (222N)(0.60m)cos120°
W = -66J

For the second part, use of a kinematics equation is useful.

Known values:

Initial velocity = 11m/s
Final velocity = 0m/s
Acceleration = 222/6m/s^2 (since F = ma, therefore a = F/m)

Kinematics equation: Vf^2 = Vi^2 + 2aΔd

Rearrange to solve for Δd.

(Vf^2 - Vi^2)/2a = Δd

Plug in values.

(-(11)^2)/2((222\6)) = -1.6m

A 400 W computer is turned on 8 hours per day. If electricity costs 10 cents per kwh then the cost to run the computer annually is 116800 dollars.

Energy is dependent on the power consumed for a given period of time.

Given,

Power = 400W

Time = 8 hours/day

Cost of 1KWh = 10cents

We know that,

Energy consumed = Power × time

So,

Energy consumed in one day = Power × time

Energy consumed in one day = 400 × 8h

Energy consumed in one day = 3200KWh

Now,

Energy consumed in 365 day = Energy consumed in one day × 365

Energy consumed in 365 day = 3200 × 365

Energy consumed in 365 day = 11,68,000 KWh

Also,

Cost of 1 KWh = 10 cents

Cost of 11,68,000 KWh = 11,68,000 ×10

Cost of 11,68,000 KWh = 11680000 cents

Now, 1 Cent = 0.01 dollars

11680000 cents = 116800 dollars

Hence, it will cost 116800 dollars to run the computer 8hours per day anually.

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The mass of the water in the system is one parameter that can be taken into consideration that is kept constant.

Describe a constant.

A constant in science is a kind of unaltered variable that stays constant together with the experimental process.

It is important to take into account a system's constants, which cannot be altered by experiments or observations.

In conclusion, the mass of the water can be taken into consideration as a continuous system parameter.

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Answer:

1. independent

2. dependent

3.gap width

Explanation:

read the question well

If an air parcel is given a small push upward and it falls back to its original position, the atmosphere is said to be Stable.

A Stable atmospheric condition is a state where a body thrown like an parcel tends to return to its original position where it was present earlier even after being disturbed externally.

Stable conditions tends to oppose the forces that lead to the displacement of the object from original position.

When a parcel is given a small push upward and it falls back to its original position in air. This shows Stability in the atmosphere which bring back the sir parcel where it was present initially.

A body under the action of gravity in case of stable equilibrium conditions shows returning back of the body after sometime on reaching a certain height.

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At the point of incidence, the incident and reflected rays form the following two angles:

The angle of incidence is the angle created at the point of incidence between the incident ray and the normal.The angle of reflection is the term used to describe the angle created at the point of incidence between the normal and the reflected beam.

The law of reflection states that the angle of incidence and angle of reflection are identical. The normal is in the same plane as both the angle of incidence and the angle of reflection, which are always equal.

Light is renowned for its highly predictable behavior. The behavior of a beam of light as it reflects would follow a determinable law known as the law of reflection if it could be seen approaching and reflecting off of a flat mirror. The law of reflection is shown in the diagram below.

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The magnitude of the magnetic field is B = 1.95×10⁻³ T.

Given,

v (speed of the proton) = 1.20 km/s = 1.4 × 10³ m/s

m (mass of the proton) = 1.67 × 10⁻²⁷ kg

q (charge of proton) = 1.6 × 10⁻¹⁹ C

To find the value of R,

Curve path length (1.18 cm) = 1/4 × Circumference

0.0118 m = 1/4 ×2 × 3.14 × R

R = 7.51 × 10⁻³ m

To find the magnitude of the magnetic field,

Formula:

B = mv / qR

Substitute the above values:

B ={ ( 1.67 × 10⁻²⁷ kg ) × ( 1.0 × 10³ m/s )} / {(1.6 × 10⁻¹⁹ C )× 0.0075 m}

B = 1.95×10⁻³ T

Thus, the magnitude of the magnetic field is 1.95×10⁻³ T

What is a uniform magnetic field ?

The field lines must be both parallel and equally spaced in order for the region under examination to have a uniform magnetic field, which must have the same strength and direction throughout. A uniform magnetic field, or any uniform field for that matter, must have the same number of field lines at every location under consideration since the density of field lines at a given position determines the intensity of the field there.

Therefore, a hom*ogeneous magnetic field would resemble a collection of parallel lines that are evenly spaced apart from one another.

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The item which can be used to detect and measure radioactive emissions is the Geiger counter

Radioactive emission occurs when a radioactive substance which is an unstable nucleus undergoes a spontaneous decay or changes into a more stable structure, but this will only happen in a handful of specific ways by ejecting particular particles or kinds of electromagnetic radiation.

The majority of particles emitted during a radioactive emission are Alpha emissions which are ejected during an alpha decay, Beta radiations which are ejected in a beta decay and Gamma radiation which is emitted when the unstable nucleus undergoes gamma decay.

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The intensity of the light passing through the stack of polarizing sheets is 51.56 W/m²

Given;

I₀= Unpolarized light intensity = 550 W/m²

θ = Angle between filters = 30°

Intensity of light after passing through first polarizer

I = I₀/2 = 550/2 = 275 W/m²

Intensity of light after passing through second polarizer

I₁ = ICos²θ = 275 X Cos²(30) = 206.25 W/m²

Intensity of light after passing through third polarizer

I₂ = I₁Cos²θ = 206.25 X Cos²(90-30) = 206.25 X Cos²(60) = 51.56 W/m²

The intensity of the light passing through the stack of polarizing sheets is 51.56 W/m².

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I understand that the question you are looking for is "Unpolarized light of intensity 550 W/m² is incident on two ideal polarizing sheets that are placed with their transmission axes perpendicular to each other. An additional polarizing sheet is then placed between the two, with its transmission axis oriented at 30∘ to that of the first. What is the intensity of the light passing through the stack of polarizing sheets?"

The velocity v after time t = u + a*t.

The distance after first 4 seconds = 4u + 8a

Solution:

From formula:

V = u + a*t

S = u*t + 1/2*a*t^2

S = 4u + 8a

What is velocity?

The pace at which an object's direction changes when it is traveling is referred to as its velocity and is measured by a particular unit of time and from a particular point of view. Velocity is a fundamental concept in kinematics, the branch of classical mechanics that deals with the motion of bodies.

What is an example of velocity?

Velocity can be defined as the rate at which something moves in a specific direction. as the speed of a car driving north on a highway or the pace at which a rocket takes off.

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Answer:

Series

Explanation:

Wired in 'series' means there is only one path for current.....so when either light burns out, the circuit is broken and there is no path for current so the other light will be unlit

Assume an individual has no sodium in their intestinal tract. if this were the case the asorption of galactose would be most affected.

Transport of d-galactose by the gastrointestinal tract :

Adult insects' gastrointestinal tract epithelium is where nutrients are absorbed because of the exoskeleton. The majority of physiological investigations have described the intestinal absorption of sugar as a diffusional mechanism, and no sugar transporter has been successfully cloned from an insect's digestive system to date. The current investigation makes a convincing case for the existence of a saturable galactose transport system in the gastric caeca of Locusta migratoria.

Galactose absorption is unaffected by changes in pH, the absence of K+, Cl, Mg2+, or Ca2+, either. However, facilitative transporter inhibitors like as phloretin, cytochalasin B, and theophylline reduce sugar uptake by about 50%. The presence of an mRNA coding for at least one equilibrative sugar transporter in the L. migratoria gastric caeca is further supported by the observation that Xenopus laevis oocytes microinjected with poly A+ RNA isolated from gastric caeca show sodium-independent galactose uptake that is three times higher than in non-injected oocytes.

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Answer:

a) 480 000 J

b) 43 m/s

Explanation:

a)

To calculate the work done by the engine, we can use the following formula:

[tex]\boxed{\mathrm{Work \space\ done = Force \times Distance}}[/tex].

⇒ [tex]12000 \times 40[/tex]

⇒ [tex]480000 \space\ \mathrm J[/tex]

b)

We know that the work done by the propeller was converted into motion of the sled, which means the propeller provided the sled with kinetic energy.

∴ work done by propeller = kinetic energy gained by sled

⇒ [tex]480000 = \frac{1}{2} mv^2[/tex]

⇒ [tex]480000 = \frac{1}{2} \times 520 \times v^2[/tex]

⇒ [tex]480000 = 260v^2[/tex]

⇒ [tex]v^2 = \frac{480000}{260}[/tex]

⇒ [tex]v =\bf 43 \space\ m/s[/tex]

This means that its velocity after 40 m was 43 m/s.

The angle between the Force(torque) applied and the perpendicular distance from the pivot point. where ɸ is 90°

Equation of torque from the equation τ = f sinθ,

f is the force,

r is the distance from the pivot point

Torque is a degree of the force that could cause an item to rotate about an axis. just as force is what reasons an item to accelerate in linear kinematics, torque is what reasons an item to collect angular acceleration. Torque is a vector quantity.

Torque is a twisting or turning pressure that has a tendency to reason rotation round an axis, which is probably a middle of mass or a fixed point. Torque can also be concept of because the capability of something this is rotating, including a equipment or a shaft, to overcome turning resistance.

Torque is a twisting pressure that speaks to the engine's rotational pressure and measures how a great deal of that twisting force is to be had when an engine exerts itself. Torque is found in everyday happenings, along with working a doorknob, starting a soda bottle, the use of a wrench, or pedaling a bicycle

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Globular clusters include, old, low mass stars with fewer heavy components and hence exist not ideal places for life

What is Globular clusters?

Globular clusters exist as stable, tightly bound clusters of tens of thousands to millions of stars. They exist associated with all kinds of galaxies. Globular clusters exist typically much larger than open clusters and stand tightly gravitationally bound.

A globular cluster exists as a spheroidal conglomeration of stars. Globular clusters exist bound together by gravity, with a more increased concentration of stars towards their centers. They can include anywhere from tens of thousands to numerous millions of member stars. Their name exists derived from the Latin globules.

Globular clusters exist discovered in nearly all galaxies. In spiral galaxies like the Milky Way, they are mostly discovered in the outer spheroidal parts of the galaxy – the galactic halo.

The globular cluster stands a large group of old stars that exist closely packed in a symmetrical, somewhat spherical form. Globular clusters, so named because of their spherical appearance, exist as the largest and most massive star clusters.

Hence, Globular clusters include, old, low mass stars with fewer heavy components and hence exist not ideal places for life.

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The light reflected from a soap bubble (μ =1. 40) appears yellow (λ= 582 nm) at its center. The minimum thickness (in nm) is 103.9 nm.

For finding out the thickness of the soap bubble, we can use the relation between the refractive index, thickness of bubble and the wavelength of light used which is given by the formula:

2μt = (n - 1/2) λ where, n = 1,2,3,4,.......

where, μ is refractive index of the soap bubble

t is thickness of the soap bubble

λ wavelength of light used

Given,

μ = 1.40

λ =582nm

t = ?

For minimum thickness, n=1

2(1.40)t = (1 - 1/2) 582nm

t = 582 / 4 × 1.40 nm

t = 103.9 nm

Hence, The minimum thickness (in nm) is 103.9 nm.

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666.6667 N force did he apply.

When two or more items interact, it creates a push or pull between them and is known as a force. Whenever a force is present, it always has a direction. The drag caused by a surface's interaction with air and the force caused by friction between two objects is two examples of opposing forces. The impulse is described as the result of time and force.

Impulse (I) equals F * t.

As the impulse is given to us, which is:

I equal 100 ns, and t is 0.15 s.

So, the necessary force is:

F = I/t

F = 100/0.15

F = 666.6667 N

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How Antennas Work:

We can’t see electron but radio and television waves are just another form of light. They have a much longer wavelength than visible light but both are electromagnetic radiation.

To generate radio and TV waves we typically make electrons oscillate up and down on an antenna. This is done by applying a variable voltage or alternating current to the antenna.

Antennas are generally made of metals and metals act like containers filled with a liquid made of electrons. Metal atoms have one or more weakly held electrons in their outer shells which can “float” from atom to atom.

When a negatively charged electron moves it leaves behind what is generally referred to as a positively charged hole. The hole is simply an atom with more positive protons than negative electrons.

The electrical fields for the two types of charges are shown in Figures 1 and 2. These are ray diagrams. The arrows show the direction of the force that would be exerted on a unit of positive charge.

Unlike a vector diagram, the length of a ray does not indicate the magnitude of the force. Instead, the space between rays indicates magnitude. Both diagrams in Figures 1 and 2 show that the magnitude of the field decreases with increasing distance from the charge because the space between the rays increases.

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Given the equation for the magnitude of the magnetic field in the center of a solenoid: V=(K IBI =Ko 2' where N is the number of Loops _ the current through the solenoid, and L the length of the solenoid , derive an expression for the slope of your plot

What is solenoid?

An electromagnet known as a solenoid creates a regulated magnetic field using a helical coil of wire whose length is significantly higher than its diameter. When an electric current is run through the coil, it can create a consistent magnetic field inside a defined region of space. André-Marie Ampère created the term solenoid in 1823.

A solenoid's helical coil does not always circle around a straight axis; for instance, William Sturgeon's electromagnet from 1824 used a solenoid bent into the shape of a horseshoe (not unlike an arc spring).

Particularly in television camera tubes like vidicons and image orthicons, soldenoids offer magnetic focussing of electrons in vacuums.

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The degree received after completing a two-year program at a community college is called an associate's degree.

What is associate's degree?

A community college, junior college, online university, or some four-year institutions in the US all grant associate degrees, which are two-year college degrees. A bachelor's degree and an associate's degree are the two highest levels of education.

Associate degrees serve as a basis for further education and can speed up the completion of bachelor's degrees, allowing students to pursue academic and professional ambitions.

A bachelor's degree is frequently pursued after earning an associate's. The general education, core, and elective requirements for the four-year degree can be satisfied using transfer credits from a two-year associate program. These associate degrees may be offered online by community colleges, which usually have lower tuition than four-year institutions.

Associate degrees can also prepare students for entry-level positions.

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When a 2 m long wire carrying 2 A of current pointing to the right is placed in a magnetic field of 4 T directed away from you then the force on the wire point down, therefore the correct option is D

What is a magnetic field?

A magnetic field could be understood as an area around a magnet, magnetic material, or an electric charge in which magnetic force is exerted.

According to Fleming's left-hand rule, A force perpendicular to the field and the direction of the current flow is experienced by a current-carrying conductor when it is placed in an external magnetic field.

Thus, The correct answer is D because the force on a 2 m long wire carrying 2 A of current pointing to the right when placed in a magnetic field of 4 T directed away from you causes the wire to point downward.

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Answer: Down

Explanation: Founders EDU Answer Key

20 N-m is the maximum torque we can apply.

The force that can cause an object to rotate along an axis is measured as torque. Similar to how force accelerates an item in linear kinematics, torque accelerates an object in an angular direction.

The force that can cause an object to rotate along an axis is measured as torque.

In linear kinematics, force is what drives an object's acceleration. Similar to this, an angular acceleration is brought on by torque.

As a result, torque can be thought of as the rotational counterpart to force. The axis of rotation is a straight line about which an item rotates.

Torque is referred to using a variety of terms, including moment and moment of force. The moment arm or lever arm is the measurement of the separation between the point of application of force and the axis of rotation.

τ = FRsinφ

where F = force applied = 10 N

R = length of lever arm = 2m

φ = Angle between F and R = 90°

Maximum torque = 2 × 10 × 1 = 20 N-m

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The electrons making the shock come from the women's body.

What is Electric shock ?

When a high voltage current flows through the body, electrical shock results. When someone unintentionally touches an electrical source, this typically occurs. Treatment for both internal and exterior burns may be necessary as part of the aftercare.

The nervous system may be impacted by a shock.

The tissue that makes up nerves presents extremely minimal resistance to the flow of an electric charge. Electric shocks that impact nerves can cause pain, tingling, numbness, weakness, or trouble moving a limb. These effects might disappear with time or remain for good.

How to Prevent from Electrical Shocks –

Keep the Appliances Away from Moisture and Water.Never Connect or Disconnect Under Load. Be Careful with Capacitors. Use Insulated Tools. Turn Off the Power. Check for Improper or Faulty Wiring. Fix Extension Cord Problems.

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The magnitude of the magnetic force per meter (in nm) exerted on each wire is 3.74 * 10^-3 N/m or 3.74v 8 10 ^6 N/nm.

Magnetic force, enchantment or repulsion that arises between electrically charged debris due to their movement. it's miles the basic pressure accountable for such outcomes as the movement of electric cars and the appeal of magnets for iron.

Magnetic pressure is a compass, a motor, the magnets that keep stuff at the fridge, educate tracks, and new curler coasters. All transferring prices supply upward push to a magnetic subject and the costs that flow thru its regions, revel in a force.

Two items containing charge with the equal path of motion have a magnetic enchantment pressure between them. in addition, gadgets with price transferring in contrary instructions have a repulsive force between them. In our article on magnetic fields we found out how transferring rate surrounds itself with a magnetic field.

explanation is given in the image below.

Force per unit length between two wires ,

F/l = μοI₁I₂/2πd

= 4π * 10^-7 *67 *67 / 2π (24 * 10^-2)

= 2 * 10 ^-7 * 67 *67/24 *10 ^ -2

= 4489/12 * 10^-5

= 3.74 * 10 ^-3 N/m

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Thevoltage of the battery will be 9.05×10²⁰V .

What is the difference between Capacitor and Capacitance ?

A capacitor is a two terminal electronic device that has the ability to store electrical energy in the form of electric charge in an electric field and Capacitance is the capacity of the capacitor to store charge in its called Capacitance. It is the property of capacitor.

Capacitor does not depend on size ,shape and distance , Capacitance depends on the shape, size and distance between the two plates.

The two capacitor are connected in parallel ,

2 + 4 → 6 mF

Charge stored 5.43 × 10²⁵ C ,

So, V = Q/C

Where V is the voltage, Q is charge and C is Capacitor .

Voltage will be 9.05 × 10²⁰ V in the circuit .

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The answer is heat flow.

When two systems in contact are not at the same temperature, heat flow occurs.

What is heat flow?

Heat flow is the transfer of energy (heat) from the Earth's interior to its surface. The Earth's core cooling and radioactive heat creation in the upper 20 to 40 km of the crust are the main sources of heat on the planet.Heat flow occurs when a hot item transfers its heat through a conductor to a cold object, similar to how high-energy objects impart their energy to low-energy objects. How well a conductor transfers heat will impact how quickly and how much heat is transported.

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Answer:

heat flow

Explanation:

When two systems in contact are not at the same temperature, Heat flow occurs.

more info:-

When two objects having different temperature are brought together, energy will always be transferred from the hotter (the object at higher temperature) to the cooler (the object at lower temperature). The objects will exchange thermal energy, until thermal equilibrium is reached, i.e. until their temperatures are equal.it can be explained by zeroth law of thermodynamics.

The total side to side distance at the top of the building, covered during such an oscillation is 8.4 cm.

Solution:

The height of building is, h = 152 m.

The frequency on windy days is, f = 0.17 Hz.

The acceleration on the top of building is, a = 2/100g (Here g is gravitational acceleration).

[tex]a = A \times \omega ^{2}[/tex]

[tex]a = A \times (2\pi f) ^{2}[/tex]

[tex]\frac{2}{100} \times g = A \times (2\pi \times 0.17) ^ 2[/tex]

A = 0.042m

hence the total distance is twice the distance

that is 0.084m

What is oscillation?The recurrent or periodic change of a quantity around a central value (often an equilibrium point) or between two or more different states is known as oscillation.Alternating current and a swinging pendulum are two common examples of oscillation. Physics can employ oscillations to approximate complicated interactions, like those between atoms.

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Question:

The New England Merchants Bank Building in Boston is 152 m high. On windy days it sways with a frequency of 0.17 Hz, and the acceleration of the top of the building can reach 2.0% of the free-fall acceleration, enough to cause discomfort for occupants. What is the total distance, side to side, that the top of the building moves during such an oscillation?

u = v + u' / (1+vu'c^2)

= ( 0.894 c + 0.969c) / ( 1+ 0.894x 0.969)

= 1.863/1.8663

=0.998232 C

What is velocity ?

Velocity is the direction at which an object is moving and serves as a measure of the rate at which its position is changing as seen from a specific point of view and as measured by a specific unit of time (for example, 60 km/h northbound). In kinematics, the area of classical mechanics that deals with the motion of bodies, velocity is a fundamental idea.

A physical vector quantity called velocity must have both a magnitude and a direction in order to be defined. Speed is the scalar absolute value (magnitude) of velocity; it is a coherent derived unit whose quantity is measured in metres per second (m/s or m/s1) in the SI (metric system). In contrast to "5 meters per second east," which is a vector, "5 meters per second," for instance, is a scalar.

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When incident ray X passes parallel to the principal axis of a concave lens and incident ray Y passes parallel to the principal axis of a convex lens, ray X will diverge and ray Y will converge after passing through each lens.

When an incident ray X passes parallel to the principle axis of a concave lens it diverges after passing through the lens and it appears to have diverged from a point on the principal axis called the principle focus of the concave lens.

When the incident ray Y passes parallel to the principle axis of a convex lens the ray, Y converges after passing through the lens and goes through a point on the principal axis called the principle focus of the convex lens.

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In studying the interstellar medium (ISM) and Galactic cosmic rays (CRs), the uncertainty of the interstellar gas density has always been an issue. To overcome this difficulty, we used a component decomposition of the 21-cm HI line emission and used the resulting gas maps in an analysis of γ-ray data obtained by the Fermi Large Area Telescope (LAT) for the MBM~53, 54, and 55 molecular clouds and the Pegasus loop.

Galactic Cosmic Rays

Galactic Cosmic Rays (GCR) are the background source of energetic particles that constantly pelt Earth with slowly fluctuating, extremely high energies. GCR are created by explosive events like supernovae and have their origins outside of the solar system. These extremely energetic particles are effectively made up of every element, from hydrogen, which makes up around 89% of the GCR spectrum, to uranium, which is only present in trace amounts. These atoms' electrons have all been removed from their nuclei, which means that they are entirely ionized. As a result, these particles interact with magnetic fields and are affected by them. The GCR flux and spectrum at Earth are modulated by the Sun's powerful magnetic fields.

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