rolls of foil are 304 mm wide and 0.020 mm thick. (the density of foil is 2.7 g/cm3 .) what maximum length of foil can be made from 1.09 kg of foil?

Answer:

0 m/s

Explanation:

It is correct answer.

RAM, video card, are the two activities normally controlled by the northbridge part of the chipset.

The Northbridge chipset generally controls access to the RAM, video card, and the speeds at which the CPU can communicate with them. Northbridge is an Intel chipset that communicates with the computer processor and controls interaction with memory, the Peripheral Component Interconnect (PCI) bus, Level 2 cache, and all Accelerated Graphics Port (AGP) activities.

There are two activities that are normally controlled by the Northbridge part of the chipset. These include having access to the RAM and video card. To understand the Northbridge, you must understand part of it is used to be the memory controller chip used to retrieve memory from RAM for the LPU.

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Running up the flight of stairs produces more horsepower than strolling up them does. because running causes you to go through energy more quickly.

Work (in joules) equals your weight (in newtons) times the staircase's height (in meters.) The power you now possess is equal to the sum of the labor you completed and the time it took, or: Work (in joules) divided by time equals power (in watts) (in seconds.) The college alumnus questionnaire's physical activity index (PAI) is calculated on the basis of the assumption that every 20 steps is equivalent to 8 kcal of energy expenditure. This amount equates to a 0.40 kcal energy cost. You put in the same amount of effort as your potential energy changes.

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The specific volume of the water with a density of 1000 kg/m^3 is: 0.001 m^3/kg

The specific volume formula and the procedure we will use is:

v = 1/ρ

Where:

Information about the problem:

Applying the specific volume formula we get:

v = 1/ρ

v = 1/1000 kg/m^3

v = 0.001 m^3/kg

It is a physical quantity that expresses the ratio of the body mass to the volume it occupies.

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Answer:

-12.7

Explanation:

Answer: -38.2

Explanation: -50 1/2 + 10 = -40 1/2 + 2 = 38 1/2 + 0.3 = 38.2

Answer:I think the answer is a.

Explanation:

Because the magnetic field created by moving a current through a wire is both parallel and perpendicular to the wire, the field strength can be improved by coiling the wire, therefore the correct answer is option A.

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

because coiling the wire can increase the magnetic field's intensity because the magnetic field produced by running a current through a wire is both parallel to and perpendicular to the wire.

Thus, the correct answers are parallel and coiling respectively, therefore the correct answer is option A.

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During a 30-10 million year period starting at about 4.5 billion years ago, bits and pieces of metal-rich particles, rocks, and ices accumulated to form the earth.

This is referred to as a type of planet which is habitable for different types of life forms. It is also the third planet from the sun and a majority of it contains water such as oceans etc.

Earth was formed billions of years ago through the bits and pieces of metal-rich particles, rocks, and ices which was in a 30-10 million year period which therefore makes it the correct choice.

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Answer:

zero

Explanation:

In order that the connections inside an outlet box remain accessible, the NEC requires that a surface extension from an outlet box cover be made using a flexible conduit only.

In the "surface extension" concept, the damper border dimensions are simply increased in relation to the air gap height. The extension coefficient is constant for continuum flow, but the rarefied gas causes the extension to vary on Kn. The elongation increases as Kn rises.

When a box's lid is constructed so that it is unlikely to come off or be removed if its locking mechanism becomes loose, one can create a surface extension from it. The wiring technique must be built for a length that is permitted and allows access to the inside of the box by removing the cover, and it must be set up such that any grounding continuous is independent of the connection between the box and cove.

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Complete Question:

The NEC requires that a box or conduit body be installed at each conductor splice connection point. In order that the connections inside an outlet box remain accessible, the NEC requires that a surface extension from an outlet box cover be made using ____.

Raw sewage contains microorganisms that can harm ecological systems as well as make people and animals ill. In addition to bacteria and viruses, raw sewage frequently include germs that are harmful to human health. Additionally, there are additional substances in raw sewage that are just poisonous to fish, shellfish, mammals, and other aquatic life. Consequently, sewage pollution that enters a body of water sets off a negative cascade.

The definition of diversity is the quality of including or consisting of several constituents .The development of workplace diversity models since the 1960s has given rise to a strong commercial rationale for diversity. The initial paradigm for diversity in the United States was based on affirmative action and the equal opportunity employment goals put in place by the Civil Rights Act of 1964. The principle of equal employment opportunity was predicated on the notion that anybody who was intellectually or physically prepared for a particular profession might work toward (and perhaps achieve) getting the stated position without experiencing identity-based discrimination. This compliance-based strategy gave birth to the notion that the only reason a person who was different from the majority group was employed into a corporation was for show.

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The height of the projectile is 69.7 meters when air resistance can be ignored.

The initial speed (u) of the projectile is = 37 m/s

The final speed (v) is 0 because, at a high point, the projectiles come at the rest condition.

The acceleration is negative when the project is thrown in an upward direction. Therefore, the acceleration is, a = -g

Or, a = -9.81 m/s²

Now, by using the kinematics equation, we can find the height of the projectile.

v² = u² + 2gh

(0 m/s)² = (37 m/s)² + 2(-9.81 m/s²)h

2(9.81 m/s²)h = (37 m/s)²

Or, h =  (37 m/s)²/ 2(9.81 m/s²)

Or, h = 69.7 m

Therefore, the height of the projectile is 69.7 meters.

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If a tennis ball bounces on the floor three times. if each time it loses 22% of its energy due to heating, the height it will rise after the third bounce, provided we released it 3.1 m from the floor is 1.4725 m.

What is energy loss due to heating?

The deliberate or accidental transfer of heat from one material to another is known as heat loss. Radiation, convection, and conduction can all contribute to this. When a component comes in direct touch with another component, whether it is insulated or not, conduction frequently happens. When a pipe, electric heater, or other component has an air barrier surrounding it, convection occurs. When there is no touch and heat is transmitted as waves, radiation results.

given,    

Height = 3.1 m

Energy loss = 22%                                                      

Let, the total energy be equal to 1 unit                                

Balance of energy after first collision = 0.78  x 1 unit

                                                            = 0.78 unit

Balance after second collision = 0.78 ^2 unit

                                                  = 0.6084 unit

Balance after third collision = 0.78 ^3 unit

                                             = 0.475 unit

Height achieved by the third collision will be equal to energy remained                                        

H be the height achieved after 3 collision

0.475 ( m g h) = m g H                  

H = 0.475 x h                                    

H = 0.475 x 3.1 m                          

H = 1.4725 m    

Therefore,  

It will rise up to 1.4725 m after the third bounce.

Complete Question

A tennis ball bounces on the floor three times. if each time it loses 22% of its energy due to heating, how high does it rise after the third bounce, provided we released it 3.1 m from the floor?

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Explanation:

average speed= total distance/total time

=90÷15

=6

For a successful landing the aircraft will need:

The formula for uniformly varied rectilinear motion (UVRM) and procedure we will use to solve this exercise is:

Where:

Information about the problem:

Applying the final velocity formula, and clearing the time we get:

vf = vi + (a * t)

t = (vf – vi) /a

t = (0 m/s – 87 m/s) /-8.55 m/s²

t = -87 m/s/ -8.55 m/s²

t = 10.1754 s

Applying the distance formula, we get:

x = (vf²-vi²)/ (2a)

x = [(0 m/s)²- (87 m/s)²]/ (2 * -8.55 m/s²)

x = (0 m²/s²- 7569 m²/s²)/ -17.1 m/s²

x =  -7569  m²/s²/ -17.1 m/s²

x = 442.63 m

By converting the distance units form (m) to (km) we have

x = 442.63 m * 1 km/1000 m

x = 0.44263 km

It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2

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Answer:

the weight is different on the moon

Explanation:

A system gains 747 kJ of heat, resulting in a change in internal energy of the system equal to 176 kJ, here -571 kJ of work has been done.

Using the  First law of thermodynamics

ΔU = q + w

Here Change in internal energy ΔU = 176 kJ

And Heat gained by the system (q) = 747 kJ

With Work done being w

So, apply the formula in the given information we get

176 kJ = 747 + w

w = 176  - 747 kJ

    = -571 kJ

Here, the negative symbol denotes that the work has been done.

The study of how heat and other types of energy interact is the subject of the physics field known as thermodynamics. The effects of thermal energy on matter are specifically discussed, as well as how thermal energy is changed into and out of other types of energy.

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Four identical metallic spheres with charges of +8.6 UC, +5.0 PC, -4.2 pc, and -5.6 UC are placed on a piece of paper. The paper is lifted on all corners so that the spheres come into contact with each other simultaneously.

It was a cause single to help charged programmer Gary McKinnon, yet it turned into the springboard for additional cooperation one year after the fact, after Circle principal man Dr. Alex Paterson, became involved. Metallic Circles is the outcome, a 49-minute odyssey that is purposefully separated into just two tracks. This is just valid for a metallic circle. A metallic circle has the property that there can be no static electric field inside it. Consequently, by Gauss' regulation there can be no charge inside it by the same token. The metal liner is utilized as a hindrance against pervasion. Instances of such COPV circles are clear in the accompanying picture where their surfaces are quite stringy by all accounts. Space circle tracked down in Spain.

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The final velocity of the cannon camera is 22m/s

We are informed in this query that David will launch from a journey at his final speed. Consequently, it is 80 kilometers per hour. Therefore, we must convert. Listen at a 2 m/s rate. In order to convert our number of 80 into units, we must multiply it by the number of meters in a club. As a result, his final velocity equals 22.2.

a= v/ t = 56m/sec square dec acceleration = 80km/h converting into final velocity m /s sec its 22.2m/s

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The planets never travel in a straight line as they orbit the sun. according to newton's second law of motion, this must mean that the force is acting on the planets.

Newton's subsequent regulation is a quantitative depiction of the progressions that a power can create on the movement of a body. It expresses that the time pace of progress of the energy of a body is equivalent in both extent and heading to the power forced on it. The force of a body is equivalent to the result of its mass and its speed. Force, similar to speed, is a vector amount, having both greatness and bearing. A power applied to a body can change the size of the energy or its heading or both. Newton's subsequent regulation is one of the main in all of material science. For a body whose mass m is consistent, it tends to be written in the structure F = mama, where F (force) and a (speed increase) are both vector amounts. On the off chance that a body has a net power following up on it, it is advanced quickly as per the condition. On the other hand, on the off chance that a body isn't sped up, there is no net power following up on it.

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The f-number is 4

We need to know about f-number to solve this problem. The f-number of an optical system such as a camera lens is the ratio of the system's focal length to the diameter of the entrance pupil . It can be written as

N = f / D

where N is f-number, f is focal length and D is aperture diameter

From the question above, we know that

f = 40 mm

D = 10 mm

By substituting the question above, we know that

N = f / D

N = 40 / 10

N = 4

Hence, the f-number is 4

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The low-energy state of condensed matter is characterized by structural rigidity and resistance to changes of shape or volume is solid.

Solids are made from the least energetic debris, which vibrate desk bound. As a end result, a solid acquires properties like a awesome form and quantity.

A substance's frozen kingdom of rely is what's called a solid. It is not important for a substance to freeze at a low temperature. as an instance, the tap at your chemistry lab station and the faucets in your property are each product of frozen chrome steel, as are your desk, pencils, pens, cell telephones, and computers. something is solid is frozen.

The molecules of count are more stiff and move less when it's miles in its stable state.

moreover, they are greater immune to shape changes. imagine ice, that's water in its strong kingdom. Ice is a ways extra strong in its structure than liquid water, making it greater hard to shape-alternate.

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As you recognize , each electron features a unique set of quantum numbers that describes its exact location in an atom.

In your case, you're given two qunatum numbers, n, the principal quantum number, and ml , the *magnetic quantum number, and are sked to work out how many electrons can share these two quantum numbers in an atom.

The principal quantum number describes the energy state , or energy shell, on which the electron resides. Now, notice that the values the magnetic quantum number can take depend upon the value of l, the momentum quantum number.

For an electron that has n = 5, 4 are often l = {0 ; 1 ; 2; 3 ;4}

As you'll see, the magnetic quantum number can take values from − l all the high to l. If ml = 1, it follows that l could very easily be l = { 1 ;2 ;3; 4}

Finally, the spin quantum number, ms, which describes the electron's spin, can only take one among two values ms = {−1/2 ; + 1/2}

This means that you will have n = 5 ; l = 1 ; ml = 1 :ms = ± 1/2 n= 5 ; l = 2 ;ml=1 :ms= ± 1/2n = 5; l = 3 ;ml=1 :ms = ±1/2 n =5; l= 4 ;ml =1:ms=±1/2

Simply put, two electrons of opposite spins can share one orbital (given by ml=1) per sub shell (given by l).

Therefore, total of 9 electrons which will share those two quantum numbers.

What are the 4 quantum numbers?

In atoms, there are a complete of four quantum numbers: the principal quantum number (n), the orbital momentum quantum number (l), the magnetic quantum number (ml), and therefore the electron spin quantum number .

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The total hydrostatic force on the hoovar dam = f=41.56 GN

Dam filled upto height =83% of 180 m  =83/100 *180  =149.4 m

Hydrostatic power p=   xpg

force acting on dam f= pressure *area  =∫p da

 =∫₀¹⁴⁹°⁴(xpg) (380dx)

 =380pg∫₀¹⁴⁹°⁴xdx

=380*1000*9.8[x²/2]₀¹⁴⁹°⁴

f=380*9.8*1000/2[(149.4)²-0²]

f=4.156*10¹⁰ N

f=41.56 GN

The net hydrostatic pressure (hp) is the hydrostatic pressure in the capillary minus hydrostatic pressure in the interstitial fluid.

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The electrostatic force between the charges is 11.25 x [tex]10^{-11} \;\mu N[/tex].

We have two charges separated by some distance apart.

We have to calculate the magnitude of the force exerted on the charges due to the electromagnetic interaction in μN (10-6 Newtons).

The force between two point charges is -

F = [tex]$\frac{1}{4\pi \epsilon_{o} } \frac{qQ}{r^{2} }[/tex]

According to the question -

Q =5 nC = 5 x [tex]10^{-9}[/tex] C

q = 1 nC =  [tex]10^{-9}[/tex] C

r = 2 cm = 0.02 m

The force of repulsion between the charges is -

[tex]$\frac{1}{4\pi \epsilon_{o} } \frac{qQ}{r^{2} }[/tex]

[tex]$F =9\times 10^{9} \times \frac{5\times 10^{-9}\times 10^{-9} }{(0.02)^{2} }[/tex]

F = 11.25 x [tex]10^{-5}[/tex] Newtons.

Now , in micro - newtons →

F = 11.25 x [tex]10^{-5} \times 10^{-6}[/tex] = 11.25 x [tex]10^{-11} \;\mu N[/tex].

Hence, the electrostatic force between the charges is 11.25 x [tex]10^{-11} \;\mu N[/tex].

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[ The given question is not complete. The complete question is -

" Two point-like particles separated by 2 cm have charges q1=5 nC and q2=1 nC. Note that the force felt by each charge due to the other is a vector and has both a magnitude and a direction. What is the magnitude of the force exerted on the charges due to the electromagnetic interaction, in μN (10-6 Newtons)? " ]

The total power emitted by the radio transmitter is 6.67×[tex]10^{4}[/tex]W .

The given parameters;

amplitude of the electric field, E = 0.2 V/m

distance of the transmitter, = 10 km = 10,000 m

The intensity of the radio wave from the transmitter is calculated as follows

[tex]I=E^{2}[/tex]/μc

I = [tex]5.305[/tex]×[tex]10^{-5}[/tex] [tex]W/m^{2}[/tex]

The total power emitted by the radio transmitter is calculated as follows;

I= P/A

P= IA

P = 6.67×[tex]10^{4}[/tex]W.

A radio transmitter, often known as a transmitter, is an electronic device used in electronics and telecommunications that uses an antenna to emit radio waves. A radio frequency alternating current is produced by the transmitter and applied to the antenna. The antenna emits radio waves after being stimulated by this alternating current.

All radio-communicating electronic devices, including radio and television broadcasting stations, cell phones, walkie-talkies, wireless computer networks, Bluetooth-enabled gadgets, garage door openers, two-way radios in aircraft, ships, and spacecraft, radar systems, and navigational beacons, require transmitters as essential component parts.

A transmitter could be a standalone electronic device or an electrical circuit housed inside another electronic gadget.  

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It will take exactly 32 persons to run a 3.20 KW electric clothes dryer

We have a person in good physical condition and can put out 103 W of useful power for several hours at a stretch.

We have to determine how many people would it take to run a 3.20 KW electric clothes dryer.

The rate of doing work is called Power. Mathematically -

P = [tex]$\frac{dW}{dt}[/tex]

According to the question -

A single person can generate 103 W of power.

Power needed by electric clothes dryer -  3.20 KW = 3.20 x 1000 =

3220 W

Therefore, the number of individuals required will be -

n = [tex]$\frac{3220}{103}[/tex] = 31.26 = 32 Persons

Hence, it will take exactly 32 persons to run a 3.20 KW electric clothes dryer.

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The velocity of the boy in order to catch the ball is 3.8 m/s.

The time taken for the for the ball to fall from the given tower is calculated as follows;

t = √(2h/g)

where;

t = √(2 x 14.9 / 9.8)

t = 1.74 seconds

The velocity of the boy in order to catch the ball is calculated as follows;

x = Vxt

Vx = x/t

Vx = 6.62 m / 1.74 s

Vx = 3.8 m/s

Thus, the velocity of the boy in order to catch the ball is 3.8 m/s.

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make its dish bigger to improve its angular resolution

Because the wavelengths of radio waves are so larger than the wavelengths of visible light, radio telescopes must be much larger than optical telescopes. The wavelengths of radio waves range from 3 km to 1 cm, while the wavelengths of visible light range from 4 x 10-7 m (ultraviolet) to 7 x 10-7 m. (red). The degree of detail that can be observed in an area of the sky is measured in terms of angular resolution. More detail can be seen at a given wavelength with a larger telescope. The wavelength of the light or radio waves being observed by the telescope (λ) and the telescope's diameter (D) can be used to compute the angular resolution (θ) of the telescope.

θ = 2.5 × 105 × λ/D

θ = 1.22 × λ/D

The ability of any image-forming tool, such as a optical or radio telescope, a microscope, a camera, or an eye, to differentiate minute features of an object is known as angular resolution, and as such, it is a key factor in determining picture resolution. It is utilized in the application of acoustics to sound waves, antenna theory to radio waves, and optics to light waves.

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The correct answer is E(r) = q/(4πr2ε_0)

The charge has now been extended along the z axis, so think about that scenario. Typically, this is referred to as a line charge. A line charge density is typically measured by the lambda variable, which has units of coulombs per metre (in the SI system).

The field lines must lie in planes that are perpendicular to the wire because symmetry requires that the electric field point radially outward from the wire at each point. It is recommended to utilise a cylindrical Gaussian surface with the line charge as its axis for calculating the size of the radial electric field E(r) produced by a line charge with charge density λ. The cylindrical surface's length L ought to cancel out in the expression for E. (r). The equation for E using this situation and Gauss's law (r).

E(r) = q/(4πr2ε_0)

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(i) when vs 10 v with the switch on, what is the total charge q transported through rl in 2.5 seconds?

(ii) when vs 15 v with the switch on, what is the energy w required to transport 0.5

The is 7.5 Joule.

The unit of energy in line with the metric device of devices (SI) is said to be the joule (J).

similarly, power is expressed non a extensive style of other SI-incompatible units. energy, ergs, kilowatt-hours, kilocalories, and British Thermal gadgets are some of these gadgets.

(i) v_s = 10 v when switch ON

q_0=0 [when switch off]

q=q_0+∫0-t i(t)dt

q=∫0-t=2.5sec i(t)dt

q= ∫0-t=sec 1mAdt

q=1×10^-3[t]0 - 2.5 sec

q=1×10^-3[2.5]

q=2.5×10^-3

q=2.5mC

(ii)

i=15/10=1.5mA

w=vit

q=0.5 column

q=q_0-0+∫0-t i(t)dt

q=∫ 0-t 1.5mAdt

q= 1.5×10^-3t

0.5= 1.5×10^-3t

t=0.5/ 1.5×10^-3t=(0.5/1.5)×10^3t

t=0.3333×10^3=333.3 second

w=vit

=15×1.5×10^3×0.3333×10^3

w=15×1.5×0.3333

w=7.49925

w=7.5 Joule

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