Both spheres would gravitationally attract a third sphere just like two charges of the same sign would attract a third charge of the opposite sign.
What are spheres?A sphere is symmetrical, round in shape. It is a three dimensional solid, that has all its surface points at equal distances from the center. It has surface area and volume based on its radius.
How is a sphere formed?A sphere can be constructed as the surface formed by rotating a circle about any of its diameters; this is essentially the traditional definition of a sphere as given in Euclid's Elements. Since a circle is a special type of ellipse, a sphere is a special type of ellipsoid of revolution.
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What is the porosity of the sand sample?(the sediment volume for each sample is 400ml.) a. 90.25% b. 72.00% c. 25.50% d. 16.75% please select the best answer from the choices provided a b c d
d. 16.75% is the porosity of the sand sample.
How porous is the sand sample in the sediment?The average porosity of sand was calculated from the evaluation of published data to be 37.7%, 42.3%, and 46.3%, respectively, under packed, natural (in situ), and loose packing conditions, for a variety of sorting coefficients and grain sizes.
Although clay is the least permeable sediment, it is the most porous. Typically, clay behaves as an aquitard, obstructing water movement. Due to their porous and permeable nature, gravel and sand are excellent aquifer materials. The most permeable material is gravel.
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a car started accelerating from 10m/s to attain a velocity of 30m/s in 10secs,continued with a uniform velocity for another secs and stops in the next 15secs.calculate d distance covered
Answer: tjntgjuur jjrfngurug r
Explanation:r rhh reh hejjej
If the partial pressure of the diatomic gas is 0. 570 atm, what is the total pressure?.
The partial pressure of Ar is 0.5678 atm.
The partial pressure formula: what is it?As was discussed in the class, the following formula may be used to determine partial pressure: P(gas 1) is equal to x(gas 1) * P(Total), where x(gas 1) is the number of moles(gas 1)/number of moles (total). As you can see, neither the overall volume nor the individual volumes of the gases are needed for the formulas above.
How is total pressure determined?The partial pressures of the individual gases make up the overall pressure of the gas combination. The total number of moles in the gas mixture, or ntot, is equal to the sum of all ni. Ptot = Pi = P1 + P2 + P3...
Partial Pressure of Ar = mole fraction of Ar × Total Pressure
= 0.338 × 1.68 atm
= 0.5678 atm.
Therefore, the partial pressure of Ar is 0.5678 atm.
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A slab of insulating material of uniform thickness d, lying between -d/2 to +d/2 along the x axis, extends infinitely in the y and z directions. The slab has a uniform charge density rho. The electric field is zero in the middle of the slab, at x = 0.
(a) What is Eout, the magnitude of the electric field outside the slab? As implied by the fact that Eout is not given as a function of x this magnitude is constant everywhere outside the slab, not just at the surface. Express your answer in terms of d, rho, and ε_0.
(b)What is Ein, the magnitude of the electric field inside the slab as a function of x? Express your answer in terms of x, rho, and ε_0.
Answer: a) The electric field outside the slab can be calculated using Gauss's Law. Since the electric field is zero in the middle of the slab and the charge density is uniform, the electric flux through any Gaussian surface that encloses the middle of the slab will be zero. Therefore, the electric field outside the slab must also be zero.
b) Inside the slab, the electric field can be calculated using the formula for the electric field due to a uniform charge distribution: E = rho/(2*ε_0). This formula gives the electric field as a constant, independent of x. The electric field inside the slab will be uniform and directed from the negative charge towards the positive charge.
a 20kg girl swings back and forth on a swing whose ropes are. 4m long. the maximum height she reaches is 2m above the ground. at the lowest point she is .5m above the ground. what is the girls maximum speed
Answer:4m
Explanation:
Thats the girls maximum speed
Give It Some Thought: The Atmosphere K2 of 26> Part A-Weather and climate Read the following statements, and detemine whether they refer to weather, to climate, or to both Drag the approprlate items into their respective bins View Available Hint s) Reset Help Wisconsin had an unseasonably largeMuch of central Australia is desert January is usually Omaha's coldest snowstorm last week month Thursday's low of-20 C is the coldest temperature ever recorded for that city I am moving to southem Arizona because il is warm and sunny Tuesday atemoon a tornado touched down in lowa The high this afternoon was 25° C. cimate Weather Both Submit
The matchup are:
Wisconsin had an unseasonably large snowstorm last week - WeatherMuch of central Australia is desert - ClimateJanuary is usually Omaha's coldest month - ClimateThursday's low of-20 C is the coldest temperature ever recorded for that city - WeatherI am moving to southern Arizona because it is warm and sunny - ClimateTuesday afternoon a tornado touched down in Iowa - WeatherThe high this afternoon was 25° C - WeatherWhat is the Weather about?The key to understanding the difference between weather and climate is that weather is what is happening in the atmosphere at a specific place and time, while climate is the long-term average of the weather at a particular place.
Weather is the condition of the atmosphere over a short period of time, including temperature, humidity, winds, and precipitation, which can vary from day to day or even hour to hour.
Climate refers to the average weather patterns, including temperature, precipitation, and wind patterns, in a particular place over a period of 30 years or more.
Therefore, In the above statement you can see the first point is talking about a specific event (snowstorm) happening in a short period of time, which refers to weather. point 2 is talking about central Australia being desert generally which refers to climate, same goes for point 3,4,5 and 7. Point 6 is also referring to a specific event happening in a specific location, which is Tornado touches down, which refers to Weather.
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Which of the following is most often used to change the direction of a force, but not the strength of the force?
a. a ball bearing b. a rope
c. a spring d. a parachute
b. a rope
Explanation:With the use of the rope, you can pull the object in any direction with the same magnitude which would change the direction but not the magnitude.
If two cars meet on a narrow grade and they cannot pass, the right-of-way should be yielded to:A. Neither car.B. The car going uphill.C. The car going downhill.
If two cars meet on a narrow grade and they cannot pass, the right-of-way should be yielded to (B) The car going uphill.
In the situation that two vehicles met on a winding mountain road that is only wide enough for one vehicle to go at a time, the driver of the vehicle that is driving downhill is required to give way to the driver of the vehicle that is traveling upwards. If it is more convenient for the car going uphill to locate a larger space or turnout, then the vehicle going downhill should pull over far enough to make room for the other vehicle to pass through.
So option B is the correct option.
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When a refrigeration system that produces low or no cooling has low suction pressure, high head pressure, and high evaporator pressure, it probably _____.
When a refrigeration system that produces low or no cooling has low suction pressure, high head pressure, and high evaporator pressure, it probably an undercharge of refrigerant. Correct answer: letter D.
An undercharge of refrigerant in a refrigeration system is one of the most common causes of low or no cooling. When refrigerant is undercharged, the system is unable to produce the necessary cooling effect, resulting in:
Low suction pressure.High head pressure.High evaporator pressure.Additionally, an undercharge of refrigerant can be caused by a leak in the system or by improper charging during installation.
When a refrigeration system producing low to normal refrigeration operates continuously without stopping and has high suction pressure and high head pressure, the probable cause is ______.
a. An inefficient compressor.
b. A low-side restriction.
c. Noncondensables trapped in the condenser.
d. An undercharge of refrigerant.
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A safety helmet extends the time of impact from 0.005 s to 0.020 s. By what factor is the average force that causes the impact reduced?
Answer:
4
Explanation:
Impact Force = mv/2t
Impact force is inversely proportional to t
If m and v are constant and the only thing that changes is t, then:
0.005 s increases by a factor of 4 to 0.020 s
Therefore, impact force reduces by a factor of 4 (1/4 less than when the time of impact was 0.005 s)
A cell has a mutation that disrupts the insulin binding site of the insulin receptor.
The insulin receptor (IR) initiates downstream signalling cascades in response to insulin binding. After then, clathrin-mediated endocytosis takes place to ingest the active IR. The mechanism and control of clathrin-mediated endocytosis of IR remain poorly understood after decades of research.
When insulin binds to its receptor on a cell, what happens?When insulin binds to the insulin receptor (IR) on the cell surface, IR kinase is activated and insulin-IR complexes are first transported to clathrin-coated pits and early endosomes that contain internalised but functional insulin receptors.
One of the main causes of neonatal diabetes is insulin gene abnormalities. They may result in proinsulin misfolding and endoplasmic reticulum retention (ER). This causes an increase in ER stress, which is thought to cause beta-cell death.
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What is atmospheric perspective the effect?
Atmospheric perspective, is an optical effect used in art, where distant objects appear hazy, less detailed, and a lighter shade of color than closer objects. This effect is created by the scattering of light in a medium such as air.
Atmospheric perspective gives a painting or drawing depth and a sense of distance, allowing the viewer to imagine a world beyond what is shown.
Atmospheric perspective is an important effect used in art to create a sense of depth and distance in a painting or drawing. It is achieved by the scattering of light in a medium, such as air, which causes distant objects to appear hazy, less detailed, and a lighter shade of color than closer objects.
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What are the official names for the big dipper and the little dipper? ursa major and sirius orion and rigel ursa major and ursa minor ursa minor and orion.
Ursa major and Ursa minor are the official names for the big dipper and the little dipper.
There is a connect-the-dots activity (which also reviews the alphabet) that introduces patterns in the night sky. It concludes with a night-time outdoor activity to see the Big Dipper, the Little Dipper, and the North Star on a clear night. Spread this activity out over the course of two days, and enjoy the stars in the clear night sky.
Star- an object in space that is made of burning gas and that looks like a point of light in the night sky. Some stars have names, and some even have nick-names. Stars are huge, but they are so far away that they seem very, very tiny. The Sun is the closest star to Earth.
Constellation - a group of stars that forms a shape in the sky. The shape can be a person, an animal, or an object (like a pot or a musical instrument). asterism- a group of stars that make a small shape, usually inside of a bigger constellation.
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Ursa major and Ursa minor are the official names for the big dipper and the little dipper.
The night sky patterns are introduced in a connect-the-dots game that also reviews the alphabet. A nighttime outdoor activity to observe the North Star, Little Dipper, and Big Dipper on a clear night marks its conclusion. Enjoy the stars in the beautiful night sky by spreading out this exercise across two days.
A star is a blazing gas-filled object in space that resembles a point of light in the night sky. Some celebrities have names and even nicknames. Stars are enormous, yet because they are so far away, they appear to be incredibly small. The Sun is the star that is closest to Earth.
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How does global warming alter the albedo of the Arctic? Select the two correct answers.
Melting sea ice to reveal darker water.
Changing migration patterns for sea life.
Melting glaciers to reveal darker soil.
Replacing tundra with more rapid growth.
The two effects of global warming on the albedo of the Arctic include;
Melting sea ice to reveal darker water.Melting glaciers to reveal darker soil.What is global warming?Global warming is defined as the phenomenon of increasing average air temperatures near the surface of Earth over the past one to two centuries.
There several consequences that results from the effect of global warming on our planets and they include the following;
Hotter temperaturesMore severe stormsIncreased droughtA warming, rising oceanLoss of speciesNot enough foodMore health risksPoverty and displacement, etcAlso, global warming affects the Arctic as well. As a result of global warming, the resulting sea ice and snow loss significantly lowers the albedo of the Arctic. This causes increased absorption of solar radiation, leading to a cycle of more sea ice melt.
Thus, an increase in global temperature causes snow and ice to melt, which decreases the extent to which they cover the surface, which then decreases Earth's albedo.
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A load draws a complex power S = 40+j30 VA. Find the apparent power delivered to this load
50 VA
30j VAR
30 VAR
40-j30 VA
40 VA
1/(40+j30) VAR
The apparent power delivered to this load is 50VA. For a load, S = 40 + j 30 VA is the complex power. The appropriate response is option a. Power in physics is the quantity of energy transported per unit time.
The watt, which is equal to one joule per second in the International System of Units, serves as the unit of power. Power is occasionally referred to as activity in earlier writings. Energy is a scalar quantity. The precise definition of a load is as follows: Any device that allows energy to pass through it is a load. It disperses or transfers the energy to another location. The elsewhere could be the environment in the form of heat, light, flux, or another device as mechanical power or shaft energy.
S = ((40^2+30^2))^1/2
= (1600+900)^1/2= 50VA
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A ball is rolled horizontally off a table with an initial speed of 0.24 m/s. A stop watch measures the ball's trajectory time from table to the floor to be 0.30 s. How far away from the table does the ball land? (g= 9.8 m/s2 and air resistance is negligible)
Select one:
a.
1.2 m
b.
0.055 m
c.
0.072 m
d.
1.9 m
Option c is accurate because using the gravitational constant, the figure for distance d comes out to be 0.072m.
d= 1/2gt^2
d= 1/2(9.8)(0.30^2)
d=0.44m
The definition of gravitational constant?The gravitational force between two bodies of equal mass that are held at an equal distance from one another constitutes the global gravitational constant.
What is G Class 11 of the gravitational constant?A number used in Newton's law of gravity to relate the gravitational pull of two bodies to their masses and distance from one another. Approximately 6. 673 10 11 Nm2 kg2 is the gravitational constant.
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What is the effect of sun heat and light to the environment?
In addition to heating the Earth's oceans and atmosphere and causing weather patterns, the Sun also gives energy to the planet's green, expanding vegetation, which provides food and oxygen for life.
Despite the fact that its heat and light are what make the Sun so well-known to us, it also has other, less obvious effects on the planet and human culture. The emission or transmission of energy as waves or particles through space or through a material medium is referred to as radiation in physics. The electromagnetic spectrum, which encompasses radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation, is included in this. One of a body's fundamental characteristics is mass. Before the discovery of the atom and particle, it was widely believed that it was tied to the amount of matter in a physical body.
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It emits solar energy, which enables life to exist on Earth, in the form of light and heat. To flourish, plants require sunshine. Humans and other animals alike depend on plants for food and the oxygen they create.
Why is solar energy environmentally friendly?Solar energy is a renewable resource that plays a significant part in lowering greenhouse gas emissions and preventing climate change, which is essential for safeguarding people, animals, and ecosystems. Additionally, the usage of solar energy can minimize water consumption and enhance air quality.
What exactly is a renewable energy source?When natural resources are restored more quickly than they are used up, it is said to be using renewable energy. Such sources that are constantly replenished include the sun and the wind, for instance.
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A small rock bounces off the windshield of a moving car and experiences a large change in velocity. how does the car’s momentum change?(1 point) responses it has a much smaller change in momentum than that of the rock, in the opposite direction. it has a much smaller change in momentum than that of the rock, in the opposite direction. it has a change in momentum equal to that of the rock, in the opposite direction. it has a change in momentum equal to that of the rock, in the opposite direction. it has a change in momentum greater than that of the rock, in the opposite direction. it has a change in momentum greater than that of the rock, in the opposite direction. it does not change.
Assuming a small rock bounces off the windshield of a moving car and experiences a large change in velocity, the way in which the car’s momentum change is that: C. it has a change in momentum equal to that of the rock, in the opposite direction.
What is the law of conservation of momentum?The law of conservation of momentum states that the total linear momentum of an isolated (closed) system would always remain constant (the same) with respect to time, unless an external force is applied.
Additionally, the law of conservation of momentum states that the total momentum of two (2) interacting objects in an isolated (closed) system would be the same or remain constant, provided no external force is applied.
In this scenario, we can reasonably infer and logically deduce that in accordance with the law of conservation of momentum, the car’s momentum would be equal to the rock's momentum, in the opposite direction.
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For one type of insulating material, the temperature of the water decreased from
85.0 °C to 65.0 °C.
The energy transferred from the water was 10.5 kJ.
specific heat capacity of water = 4200 J/kg °C
Calculate the mass of water in the can.
HELP PLS!!!!! PHYSICS
The mass of the water in the can, temperature of the water decreased from 85.0 °C to 65.0 °C is 0.125 Kg
How do I determine the mass of the water in the can?From calorimetry, we understood that heat and mass are related according to the given formula:
Q = MCΔT
Where
Q is the heat energyM is the massC is the specific heat capacityΔT is the change in temperatureUsing the above formula, the mass of the water can be obtained as follow:
Initial temperature of water (T₁) = 85.0 °CFinal temperature of water(T₂) = 65.0 °CChange in temperature (ΔT) = 65 - 85 = -20 °C Specific heat capacity of water (C) = 4200 J/KgºC Heat transferred (Q) = -10.5 KJ = -10.5 × 1000 = -10500 JMass of water (M) =?Q = MCΔT
-10500 = M × 4200 × -20
-10500 = M × -84000
Divide both sides by -84000
M = -10500 / -84000
M = 0.125 Kg
Thus, we can conclude from the above calculation that the mass of the water in the can is 0.125 Kg
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How did white europeans and americans use charles darwin's theory on evolution to justify europe's imperialism?.
They cited evolution to explain that the peoples they conquered were an inferior race and needed their leadership.
Social Darwinists defended imperialism by claiming that because of their supremacy, these imperial powers had to conquer other countries in order for human evolution to proceed.
Social Darwinism was utilized by imperialists as justification for their meddling or hegemony in other nations. The arguments made claimed that white Europeans and Americans were more advanced than other peoples and that it was therefore not only their right but also their responsibility to subjugate others. They stated that they were helping those nations. The poem "The White Man's Burden" by Rudyard Kipling, in which he depicts the dominated people as inferior, immature, and heretics, is a particularly fine illustration of this concept.
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The complete question is
How did white Europeans and Americans use Charles Darwin's theory on evolution to justify Europe's imperialism?
a. European scientists were eager to study undiscovered species in the jungles of India and Africa.
b. They cited evolution to explain that the peoples they conquered were an inferior race and needed their leadership.
c. Many championed the European ideas of equality and freedom for all people.
d. Charles Darwin encouraged people to expand the religions in Europe around the globe.
this theory was written by ptolemy, and it placed the earth at the center of the solar system.
Ptolemy writes the geocentric model placed the earth at the center of the solar system.
Geocentric models, all theories about the structure of the solar system and the universe. It is believed that the earth is at the center of everything. The most advanced heliocentric model was that of Ptolemy of Alexandria. Ptolemy placed the Earth as the center of the solar system in the geocentric model. Ptolemy used the data he had to think that the universe was a series of interlocking spheres surrounding the earth. He believed that the Moon orbits the closest globe to the Earth, followed by Mercury, Venus, and the Sun. The main idea of Ptolemy's system was that the planet Earth was the center of the universe, around which all other planets, stars and the sun revolved or orbited. Earth-centered Ptolemy-like theories about the universe are called geocentric.
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explain how the characteristics are used to classify organisms into the six kingdoms
The organisms can be classified into the six kingdoms based on similarities or common characteristics.
Why are the characteristics are used to classify organisms ?Organisms are placed into different types of categories on the basis of similarities or common characteristics among different organisms. Some of the characteristics or qualities that are used to determine classification are cell type, nutrient intake, and mode of reproduction. The two main cell types are prokaryotic cells and eukaryotic cells.
Today, the system that is used is the Six Kingdom Classifications i.e. Plants, Animals, Protists, Fungi, Archaebacteria, and Eubacteria. These organisms are classified into different kingdoms on the basis of cell type, their ability to make food and the number of cells present in their body.
So we can conclude that on the basis of common characteristics, organisms can be classified into the many kingdoms
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A student made measurements to determine the specific heat capacity of vegetable oil
Figure 2 shows the equipment used....................
aqa combined science physics higher
Using the formula of specific heat capacity, it can be calculated by measuring amount of heat transferred and temperature increased by this equipment.
What is specific heat capacity?The amount of energy needed to raise the temperature of 1 kilograms of tissue by 1 K (=1°C) is measured by the specific heat capacity of tissue, or c [J/(kg K)].
Frist, the temperature and the amount of heat of the vegetable oil in the beaker be measured. After that, its temperature should be increased up to certain degrees by using electric heater and all the measurements will be noted.
Then using the formula of specific heat capacity, it can be calculated.
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Answer:
May I ask where you found that paper?
the earth revolves blank around the sun each year when viewed from above the north pole.
When viewed above the North Pole, the Earth rotates counterclockwise, from west to east. This is also called a prograde rotation.
When viewed from above Earth's North Pole Which way does Earth orbit the sun?The Earth rotates around the Sun-also counterclockwise viewed from above the North Pole, clockwise observe from the South Pole-to give us our years. The plane of the Earth's orbit is called the sphere where aureole happens. Because of this direction of rotation, we see the sun rising every day in the east and position in the west.
As we viewed above the earth revolves empty around the sun each year when viewed from above the north pole. We know that the Earth is viewed once in twenty-four hours.
So we can conclude that Earth when seen from the top of the north pole, will be seen revolve in anti-clockwise.
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After the capacitor is fully charged, the battery is removed and the capacitor is discharged through the resistor. How much charge is on the capacitor after 1 time constant
The charge on the capacitor C that discharge through a resistor R is 0.36 times the initial charge of the capacitor.
A capacitor C discharge through a resistor R. Let Vi = voltage when the capacitor charges to Initial charge, Qi = CVi.
When time becomes 1 time constant, t=T, for voltage on discharging capacitor, we know, V = Vie−t/τ, where τ = time constant. Now,
Vf = Vi*e−t/τ, Vf =Vi* e−T/τ, Vf=Vi *e^-1 , Vf=Vi/e.
Now let Qi be the initial full charge on the capacitor.
Then Qi=1/2C*Vi , Qf=½ C*Vf ,Qf=1/2C*Vi/e , Qf=Qi/e , Qf = 0.36 Qi.
So the charge on the capacitor after 1 time constant is 0.36 times the initial fully charge of the capacitor.
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If you leave home at 1:00 and get to your friend's house at 5:00, what is your average speed?
Answer:
4 miles per hour
Explanation:
you go 1 mile every hour
when are electrical forces between charges normally strongest?
Electrical forces between charges are normally strongest when the charges are close together.
The repulsive or attractive interplay among any charged bodies is known as an electric-powered force. just like any pressure, its effect and effects on the given frame are defined by means of Newton's laws of motion. the electric force is one of the diverse forces that act on gadgets.
Electric-powered force is the attractive pressure between the electrons and the nucleus. Now, a nice price or a bad price creates a field inside the empty space around it, and we call that empty area an electric field. electrical forces result from mutual interactions between prices. In situations involving three or greater expenses, the electric force on a single charge is merely the result of the blended results of every character fee interplay of that price with all different charges.
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What are convex mirrors used for?
Since convex mirrors can divergence light beams and create virtual pictures, they are frequently employed as rear-view reflectors in cars and other vehicles.
Why can't concave mirrors be used in automobiles?Concave mirrors provide a genuine and inverted image, giving the impression that the items are upside down. Additionally, because concave mirrors have a much smaller field of view than convex mirrors, they cannot be used as rearview mirrors in vehicles.
What kind of mirror does a camera use?In photographic cameras, convex lenses are utilized because concave mirrors don't produce true images that can be captured on film or displayed on screens.
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deposition of dissolved minerals in caverns leaves deposits such as the icicle-like ________.
In caverns, dissolved minerals collect and form formations like the icicle-shaped stalactites.
When minerals from water seeping through the cave's ceiling precipitate, they form stalactites, an icicle-shaped phenomena that hangs from the roof. The tips of most stalactites are pointy. In caverns, you can often see stalactites and bats. Stalactites are the pointy rock fragments that hang from a cave's ceiling. Stalagmites and stalagtites form as rainwater drips through limestone rock. The National Park Service claims that it absorbs carbon dioxide from the atmosphere as it passes by and any organic compounds it encounters as it falls down. The ice stalactite, sometimes known as icicles, is a frequent stalactite found seasonally or year-round in many caves, especially on the surface.
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Air flows through this tube at a rate of 1100 cm3/s . Assume that air is an ideal fluid. What is the height h of mercury in the right side of the U-tube?
The height of mercury on the right side of the U-tube is 0 cm.
The height of mercury in the U-tube is determined by the pressure difference between the two sides of the tube. Since air is an ideal fluid, it has no viscosity and the flow rate is determined by the pressure difference.
In this case, the flow rate is the same on both sides of the tube, so the pressure difference is zero and the height of mercury on both sides of the tube is the same. Therefore, the height of mercury in the right side of the U-tube is 0 cm.
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