Answer:
Judging from the number of stars large enough to produce such black holes, however, scientists estimate that there are as many as ten million to a billion such black holes in the Milky Way alone.
Explanation:
What is the difference between intrusive and extrusive rocks.
Answer:
Extrusive rocks form on the Earth's surface from lava, which is magma that has risen from underground. Intrusive rocks are formed when magma cools and solidifies within the planet's crust.
That's the difference
Look at the picture
Answer:
Your answer is d
Explanation:
the current is 0.08A calculate the amounts of charge passing a point in the circuit in 2 minutes
Answer:
Charge is 9.6 Coulombs
Explanation:
- From definition of current, current is rate of flow of charge in a circuit
\(current = \triangle(charge) \\ \\ current = \frac{charge}{time} \\ \\ { \boxed{ I = \frac{Q}{t} }}\)
- From the question above,
I is 0.08AQ is ?? (needed)t is 2 mins = (2 × 60) = 120 s\(0.08 = \frac{Q}{120} \\ \\ Q = 120 \times 0.08 \\ \\ Q = 9.6 \: C\)
Look up how much power a typical light bulb uses/produces. Then look up how much power a typical microwave uses/produces. How do these appliances compare to your physical activities?
The current drawn by a microwave is greater than the amount of current used by an electric bulb, hence the microwave consumes more power.
Energy dissipated by electrical applianceThe amount of energy dissipated by an electrical appliance is the calculated using the following formulas;
P = I²R
where;
P is powerI is currentR is resistanceThe current drawn by a microwave is greater than the amount of current used by an electric bulb, hence the microwave consumes more power.
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sketch the magnetic field pattern due to the step below if the soft iron is between the two magnets
the magnetic field pattern due to the step below if the soft iron is between the two magnets is sketched.
An item constructed of a substance that has been magnetized and produces its own persistent magnetic field is referred to as a permanent magnet. A common example is a refrigerator magnet used to keep notes on the door of the refrigerator. Ferrimagnetic (or ferromagnetic) materials are those that can be magnetized and are also strongly attracted to a magnet. Included in this group are the metals iron, nickel, and cobalt as well as their alloys, a few rare-earth metal alloys, and a few naturally occurring minerals like lodestone. All other substances react weakly to a magnetic field by one of several different types of magnetism, even though only ferromagnetic (and ferrimagnetic) materials are commonly regarded as magnetic. iron is type of material.
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When the pressure is 1.00 atm What is the volume of the gas?
The required volume of the gas is 0.52 L.
What is relation between pressure and volume of the gas?Diminishing the volume of a contained gas will expand its tension, and expanding its volume will diminish its strain. As a matter of fact, on the off chance that the volume increments by a specific variable, the tension declines by a similar element, as well as the other way around.
According to question:V1 = 1.56 L, P1 = 1 atm, P2 = 3 atm,
To find: V2 of gas
So, P1V1 = P2V2
V2 = P1V1/P2
V2 = 1.56(1)/3 = 0.52 L
Thus, required volume of gas is 0.52L
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Correct question:
A gas occupies 1.56 l at 1.00 ATM what will be the volume of this gas if the pressure becomes 3.00 ATM
[PLEASE HELP ASAP TY]
light is shone on a diffraction grating with d=2.25 x 10^-6 m. the first order (m = 1) maximum occurs at a 15.7 angle. what is the wavelength of the light in nanometers? (hint: the answer will be between 400 and 700)
[?] nm
Answer:
608.9 nm
Explanation:
trust me cutie
The wavelength of light in nanometers is 0.017 x \(10^{3}\) nm.
We have -
d = \(2.25\times 10^{-6}\)
n = 1 = order
θ = 15.7 degrees
We have to calculate the wavelength of light (λ) in nanometers.
What is diffraction?Diffraction is defined as the bending or spreading of light waves as it passes through the edge of an object or through a small slit (size of slit should be very very less then wavelength of light) is called diffraction.
According to the question, we can use the following relation to calculate wavelength as -
d sinθ = nλ
λ = \(\frac{dsin\theta}{n}\)
λ = d sinθ (since n = 1)
λ = \(2.25\times 10^{-6}\) x sin (15.7)
λ = 0.0079 x 2.25 x \(10^{-6}\)
λ = 0.0177 x \(10^{-6}\) m
We know that -
1 nanometer = \(10^{-9}\) m
1 m = \(\frac{1}{10^{-9} }\)
0.017 x \(10^{-6}\) m will be equal to = \(\frac{0.017\times 10^{-6} }{10^{-9} }\) = 0.0177 x \(10^{3}\) nm
Hence, the wavelength of light in nano meters is 0.0177 x \(10^{3}\) nm.
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what is periscope ? where it is used?
Explanation:
The periscope is used in the submarines to see what is going on the water surface.
It is also used in some gun turrets and it is used in armed vehicles.
✨Hope it helps.✨
Read this statement: Biotechnology uses primary clarifiers for biological nutrient removal.
Which part of the statement is not true?
Biological nutrients are found in wastewater.
Primary clarifiers remove biological nutrients.
Biological nutrients are part of biotechnology processes.
Biological nutrient removal is part of wastewater management.
Primary clarifiers removing biological nutrients is not true. Primary clarifiers
involves the use of processes such as sedimentation in order to remove
particles floating or other inorganic solids from the waste water.
Biological nutrients such as nitrogen and phosphorus are found in waste
water and removal of these important nutrients for other uses is a part of
waste water management.
The secondary clarifiers are the ones responsible for the removal of
biological nutrients in the waste water through biofiltration etc.
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What is
meant by (a) Material Properties ( b) Mass Fabric and (c) Mass
Properties in Price's verbal Equation?
In Price's verbal equation, material properties refer to the characteristics and behaviors of a material, mass fabric relates to the distribution and arrangement of mass within a structure, and mass properties involve the quantitative measures of mass distribution and its effects on the structural performance.
(a) Material properties in Price's verbal equation pertain to the specific attributes and qualities of a material that influence its mechanical behavior, such as strength, stiffness, density, thermal conductivity, and elasticity. These properties determine how a material will respond to external forces and environmental conditions, and they play a crucial role in the design and analysis of structures.
(b) Mass fabric refers to the spatial arrangement and distribution of mass within a structure. It considers the organization, orientation, and connectivity of the structural elements that contribute to the overall mass distribution. Mass fabric affects the structural behavior, load transfer paths, and structural efficiency of a system. By understanding the mass fabric, engineers can optimize the arrangement of components to achieve desired structural performance.
(c) Mass properties involve the quantitative measures of mass distribution within a structure and its impact on its mechanical behavior. Mass properties include parameters such as mass, center of mass, moments of inertia, and radii of gyration. These properties provide important information for analyzing the dynamic response, stability, and vibrational characteristics of structures. They also influence the structural design, material selection, and optimization processes.
In Price's verbal equation, these concepts collectively contribute to understanding the behavior and performance of structures, enabling engineers to make informed decisions in design, analysis, and optimization. By considering material properties, mass fabric, and mass properties, a comprehensive understanding of the structural system can be achieved.
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Explain why earth spins like a top and Uranus like a ball
Answer:
Earth spins like top because The earth is rotating around an rotational axis which is tilted 23 degrees with respect to earth's
orbit . where as Uranus rotation is very different from earth.It rotates on its sides
29.In which of the following pictures is the average kinetic energy of molecules the highest?Select one:a. Ab. Bc. Cd. D
We will have that the picture that shows the highest average kinetic energy is image B.
In a Young's double-slit experiment, the separation between slits is d and the screen is a distance D from the slits. D is much greater than d and λ is the wavelength of the light. The number of bright fringes per unit length on the screen is:
The equation n = D / (2d * sin(λ/2d)) gives the number of bright fringes per unit length on the screen in Young's double-slit experiment and n = D / (2d * sin(λ/2d)).
In Young's double-slit experiment, light passes through two closely spaced slits and interferes with itself to produce a pattern of bright and dark fringes on a screen located a distance D from the slits. The distance between the slits is d, and the wavelength of the light is λ.
The number of bright fringes per unit length on the screen is given by the equation n = D / (2d * sin(λ/2d)). This equation is based on the principle of interference, which states that when light passes through two closely spaced slits, it creates a pattern of alternating bright and dark regions on the screen. The distance between the fringes is given by the equation:
d = 2 * D / n
here n is the number of bright fringes per unit length on the screen.
Therefore, the equation n = D / (2d * sin(λ/2d)) gives the number of bright fringes per unit length on the screen in Young's double-slit experiment.
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the spongy bone is composed of osteocytes
True or false
It is true that the spongy bone is composed of osteocytes
The spongy bone is also called as cancellous bone or trabecular bone. It is commonly found in animals. It is porous and vascularized. It contains red bone marrow. It is commonly located at the end of a long bone and is surrounded by a compact bone.
The functions of spongy bone is as follows:
Stores of bone marrow Erythropoiesis occurs in itReduces skeleton weightBones become strong and flexibleStores mineralsTherefore, it is true that the spongy bone is composed of osteocytes
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a piece of metal has a heat capacity of 741j∘c and is heated from 20.0∘c to 42.0∘c. how much heat was absorbed to cause this temperature increase?
The formula to calculate the heat absorbed or released by a substance is given by: Q = mcΔT
where Q is the heat absorbed or released, m is the mass of the substance, c is the specific heat capacity of the substance and ΔT is the change in temperature. The specific heat capacity (c) of the given metal is 741 J/°C. The temperature change (ΔT) of the metal is (42 - 20) = 22°C.
Substituting the given values in the formula, we get: Q = mcΔT= m × 741 J/°C × 22°C= 16284 m JAs we are not given the mass of the metal, we can't determine the exact value of Q.
But we know that the heat absorbed was 16284 times the mass of the metal in joules (J).So, the heat absorbed to cause the temperature increase is 16284m J. This answer is within the word limit of more than 100 words.
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an aircraft is flying not worth at 300 km per hour yesterday wind is blowing West was at 80 km per hour what is the actual Direction the aircraft travels over the ground
Answer:
220km
Explanation:
The quantity "strain" expressed in terms of the fundamental quantities (mass, length, time) is equivalent to:
The quantity "strain" expressed in terms of the fundamental quantities (mass, length, time) is equivalent to 1.
Strain is a dimensionless quantity that represents the relative deformation of a material under an applied force or stress. It can be expressed as the ratio of the change in length (ΔL) to the original length (L₀) of the material. In terms of fundamental quantities, strain can be written as:
Strain = ΔL / L₀
Since both the change in length (ΔL) and the original length (L₀) have the same dimensions of length (L), their ratio will be dimensionless, meaning that strain has no dimensions in terms of mass (M), length (L), or time (T).
Therefore, the strain is equivalent to:
1 (dimensionless)
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The speed of sound in water is 1,492 m/s. A sonar signal is sent straight down from a ship at a point just below the water's surface and 7.5 s later the reflected signal is detected. How deep is the ocean beneath the ship?
Answer:
5595 m
Explanation:
The wave travels down (the depth) and the back up (the depth again)
this distance is 2 d
2 d = 1492 m/s * 7.5 s
2d = 11190 m
d = 5595 m
What Happens to Energy during Phase Changes?
Energy transfer, and transformation.
It is when energy changes from one form to another.
Hope This Helps, Good Luck!
HELP ASAP!!!!!!! PLEASE WILL GIVE BRAINLIEST
What is a selectively permeable membrane?????????????
Answer:
It is that kind of permeable membrane that allows certain molecules to pass through. Not every molecules can pass through it
Explanation:
What has a wavelength of 10 m?.
Therefore, the frequency of the wave is 10 Hz when it has wavelength of 10 meters.
Wavelength (λ) = 10 nm
Speed of the wave = 340 m/s
To find:
The frequency of the wave
Formula used:
N=v/λ
where
n is the frequency
v is the speed
λ is the wavelength
Step-by-step explanation:
n=340/10
n=10Hz
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Ball #1 is rolled down the steeper left side of a hill; ball #2 rolls down the opposite side, which is longer and less steep. Both balls roll out onto a flat surface at the same level.Assuming no thermal losses, how do the speeds of the balls compare when they reach the flat surface?
Option C is the best choice since the ball will travel at the same speed just at bottom of the hill because the hill height is the same for both balls.
work results in KE modification.
Change in \(KE_mgh = 1/2 mv2\) equals gravitational work.
A ball's velocity needs to be utilized to generate energy potential as it is tossed into the air. The pitcher's potential power increases, while its speed decreases. An object obtains energy whenever a power is given to it and results in movement in the direction of the force. the measurement of how efficiently a machine uses energy to carry out tasks. Often, a vehicle's effectiveness is stated as a percentage.
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"Complete question"
Ball #1 is rolled down the steeper side of a hill while ball #2 rolls down the opposite side which is less steep. Both balls roll out onto a flat surface at the same level. Assuming there is no friction, how do the speeds of the balls compare when they reach the flat surface?
a. Ball #1 has the greater speed.
b. Ball #2 has the greater speed.
c. The speed will be the same for both balls.
d. Not enough information is given.
Suppose a spectral line of hydrogen, normally at 500 nm when measured in a lab on Earth, is observed in the spectrum of a star to be at 500.3 nm. This is called a red shift because the wavelength is longer (and red is on the long-wavelength side of the visible spectrum). How fast is the star moving away from Earth? Give your answer in m/s. Hint: follow example 5.6. Compare in particular to the "Check your learning" calculation, and note that larger Δλ means larger speed.
The star is moving away from Earth at a velocity of 1.8 x 106 m/s.
The Doppler Effect describes the shift in wavelength of a wave when the source is moving in relation to the observer. The shift can be observed in sound waves, light waves, and other waves.
The Doppler Effect can be used to determine the velocity of objects moving away from an observer, as in the case of stars moving away from Earth.
The velocity of a star moving away from Earth can be determined using the equation:
v = Δλ/λ x c, Where v is the velocity of the star, Δλ is the shift in wavelength of the spectral line, λ is the wavelength of the spectral line measured in the lab on Earth, and c is the speed of light (3.00 x 108 m/s).
In this case, the shift in wavelength of the spectral line is Δλ = 500.3 nm - 500 nm = 0.3 nm.
The wavelength of the spectral line measured in the lab on Earth is λ = 500 nm.
Plugging in these values to the equation above: v = Δλ/λ x cv = (0.3 nm / 500 nm) x (3.00 x 108 m/s) = 1.8 x 106 m/s.
Therefore, velocity of star 1.8 x 106 m/s.
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What If Earth got Kicked Out of the Solar System?
Answer:
We wouldn't have our moon and sun. The earth will be colder and darker
Explanation:
Answer:
mars will become habitabe
Explanation:
true fact and every planet will become close to sun
which type of thermal energy trnasfer dose a foil wrapping reduce the most
Answer:
Conduction
Explanation:
Hope this helps :)
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a tuck at rest starts to move and accelerated by 4m/s in 25 secondd. what is the velocity of the truck at the end offf the time?
Please Help 100 points
Answer:
The walls and 40%
Explanation:
The walls because that is the biggest %. And 40 % because you just add them together
Use the information below the answer the following 3 questions.
A 50 kg crate is being dragged across a floor by a force of 225 N at an angle of 40o from the horizontal. The crate is dragged a distance of 5.0 m and the frictional force is 60 N.
Question 2 (2 points)
Question 2 options:
The work done on the crate by the applied force is ___x102 Nm. (Give your answer with the correct number of sign digs and do not include units).
Question 3 (2 points)
Question 3 options:
The work done on the crate by the frictional force is -___x102 Nm. (Give your answer with the correct number of sign digs and do not include units).
Question 4 (2 points)
Question 4 options:
The net work done on the crate is ___x102 Nm. (Give your answer with the correct number of sign digs and do not include units).
Hint: Do not use rounded answers in subsequent calculations
Answer:
2. 8.62×10² Nm
3. 2.30×10² Nm
4. 6.32×10² Nm
Explanation:
2. Determination of the work done by the applied force.
Force (F) = 225 N
Distance (d) = 5 m
Angle (θ) = 40°
Workdone (Wd) =?
Wd = Fd × Cos θ
Wd = 225 × 5 × Cos 40
Wd = 8.62×10² Nm
3. Determination of the work done by the frictional force.
Frictional Force (Fբ) = 60 N
Distance (d) = 5 m
Angle (θ) = 40°
Workdone (Wd) =?
Wd = Fբd × Cos θ
Wd = 60 × 5 × Cos 40
Wd = 2.30×10² Nm
4. Determination of the net work done.
We'll begin by calculating the net force acting on the crate
Force applied (F) = 225 N
Frictional Force (Fբ) = 60 N
Net force (Fₙ) =?
Fₙ = F – Fբ
Fₙ = 225 – 60
Fₙ = 165 N
Finally, we shall determine the net Workdone. This can be obtained as follow:
Net force (Fₙ) = 165 N
Distance (d) = 5 m
Angle (θ) = 40°
Workdone (Wd) =?
Wd = Fₙd × Cos θ
Wd = 165 × 5 × Cos 40
Wd = 6.32×10² Nm
Explain how a helicopter lifts itself up, from a Newton's 3rd Law perspective,
Outer hair cells achieve somatic electromotility through the
expression of Select one:
voltage-sensitive membrane protein called prestin along the
lateral cell walls
anion transporters
a voltage- sens
Outer hair cells achieve somatic electromotility through the expression of Select one: a. a voltage-sensitive membrane protein called prestin along the lateral cell walls b. anion transporters c. a vo
Outer hair cells achieve somatic electromotility through the expression of a voltage-sensitive membrane protein called prestin along the lateral cell walls. This protein allows the cells to actively respond to sound stimuli, amplify auditory signals, and enhance the sensitivity and selectivity of the auditory system.
Outer hair cells achieve somatic electromotility through the expression of a voltage-sensitive membrane protein called prestin along the lateral cell walls.
Prestin is a unique protein found in the outer hair cells of the cochlea, which is a part of the inner ear responsible for auditory processing. These cells play a crucial role in amplifying sound signals and enhancing the sensitivity and selectivity of the auditory system.
The expression of prestin allows outer hair cells to undergo a phenomenon known as electromotility. When the membrane potential across the outer hair cell changes, prestin changes its conformation, leading to changes in cell length and shape. This electromotility enables the outer hair cells to actively respond to sound stimuli and modulate the mechanics of the cochlea.
The mechanism by which prestin achieves electromotility is still a subject of ongoing research. It is believed that the voltage sensitivity of prestin arises from changes in the charge distribution within the protein in response to changes in the membrane potential. This conformational change alters the cell's mechanical properties and allows it to actively contract and expand.
The presence of prestin and the ability of outer hair cells to exhibit electromotility are essential for the proper functioning of the auditory system. The amplification provided by outer hair cells enhances the sensitivity of the cochlea to faint sounds and improves the discrimination of different frequencies.
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