The method of exoplanet detection is best suited to finding are :-
Radial Velocity. Watching for Wobble. 1020 planets discovered.Transit. Searching for Shadows. 3938 planets discovered.Direct Imaging. Taking Pictures. 62 planets discovered.Gravitational Microlensing. Light in a Gravity Lens. 145 planets discovered.Astrometry. Minuscule Movements. 2 planets discovered.A planet is a large, rounded astronomical body this is neither a star nor its remnant. The first-class available idea of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited via a protoplanetary disk. Planets grow on this disk with the aid of the slow accumulation of cloth driven via gravity, a technique known as accretion. The sun machine has at least eight planets: the terrestrial planets Mercury, Venus, Earth and Mars, and the large planets Jupiter, Saturn, Uranus and Neptune.
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Which of the following is true about electricity and magnetism?
The creation of an electric current or magnetic field depends on the movement of electrons.
Magnets can induce electric currents only when using the north pole of the magnet.
The free flow of protons down a copper wire causes an electric current that can create a magnetic field.
Attractive and repulsive forces between charged particles prevent them from creating electric currents or magnetic fields.
Answer: A
The creation of an electric current or magnetic field depends on the movement of electrons.
Explanation:
Identify the shield shaped top of the stemum. View Avallable Hint(s)
O Xiphoid Process
O Manubrium
O Gladiolus
O Body
Submit Part B
Name the type of connective tissue that anchors the ribs onto the sternum. View Available Hint(s) Dense regular connective tissue Hyaline cartilage Elastic cartilage Fibrocartilage Submit Part C Which facial bones makeup the central portion of the bridge of the nose? ► View Available Hint(s)
O Lacrimal
O Maxillary
O Nasal
O Zygomatic
Submit Part D
What is the anatomical name for the facial bones known as "cheekbones"? View Available Hint(s)
O Maxillary bones
O Nasal bones
O Lacrimal bones
O Zygomatic bones
Submit MacBook Air Part E
Which facial bones fuse to form the upper jaw? View Available Hint(s)
O Zygomatic
O Maxillary
O Nasal
O Lacrimal
Submit Part F
Identify the small facial bones found in the medial wall of the orbit. View Available Hint(s) Inferior nasal concha Zygomatic Palatine Lacrimal Submit Part G Part G Which facial bones form the roof of the mouth?
O Ethmoid bone
O Zygomatic bone
O Mandible
O Maxillary bones
O Palatine bones
Submit Request Answer
a)Body b) Maxillary c) Zygomatic bones d) Maxillary e) Ethmoid bone
A pair of diamond-shaped, atypically formed bones called the zygomatics extend laterally to produce the prominence of the cheeks, a section of the lateral wall, the orbit floor, and a portion of the temporal and infratemporal fossa. The jaw and bones close to the ears, forehead, and skull are joined to the zygomatic bones, which also assist in giving shape and structure to the face. In addition to offering an attachment for jaw-moving muscles, they shield the nerves and blood vessels that pass through the face. referred to as the cheekbone. The temporal bone at the side of the head curves around to meet the maxilla (upper jawbone) in front, forming the zygomatic arch, a bridge of bones that includes the zygomatic (cheek) bone as a significant section.
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when a weight w is hanging from a light vertical string, the speed of pulses on the string is v. if a second weight w is added without stretching the string, the speed of pulses on this string will now become
It is false to say that speed of pulse remains v after adding the second weight w on the vertical string.
What is vertical string?As a result, the linear thicknesses of the two threads affect the string's velocity. Linear density is defined as the mass / unit length. String mass divided by string length equals linear density (m/l). The strain of the strings affects the string's wave velocity as well.
Briefing:In a string, the speed of the transverse wave v is determined by:
v=√T / √μ
where,
T represents the tension in the string
μ represents the linear mass density defined for the string
Currently, given the circumstance,
When weight (W) is suspended from a thin vertical string, the wave's velocity (V) is:
v=√W / √μ ----(eq1)
The wave's speed changes to v when a weight of W is added, as follows:
v′ = √2W /√μ -----(eq2)
After comparing eq1 and eq2, we observe that
The speed will rise by around two times the previous speed after adding the same amount of weight to the specified light string.
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light from an argon laser strikes a diffraction grating that has 5660 lines/cm. the central and first-order principal maxima are separated by 0.562 m on a wall 1.47 m from the grating. find the wavelength of the laser light.
On a wall 1.47 m away from the grating, the central and first-order principal maxima are separated by 0.562 m. The laser light's wavelength is 674 nm.
The principal maxima are defined by dsinθ=mλ, where m=0,1,2,…
For m=1,λ=dsinθ
The angle between the central maximum (m=0) and the first order maxima (m=1) in this case is called. The value of can be calculated using the data provided on the separation between maxima and the grating-to-screen distance:
tanθ= 0.562/1.47m =0.382
So θ=22.457°
and sinθ=0.382
The distance between grating "slits" equals the reciprocal of the number of grating lines per centimeter
d= 1/5660 cm⁻¹ = 0.0001766784=1.766*10³ nm
The wavelength is λ=dsinθ=(1.766*10³nm)(0.382)=674nm
A waveform signal's wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically expressed in metres (m), centimeters (cm), or millimeters (mm) (mm). It is more common to specify the wavelength in nanometers (nm), which are units of 10-9 m, or angstroms (), which are units of 10-10 m, for infrared (IR), visible light (VL), ultraviolet (UV), and gamma radiation ().
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an ideal gas is confined to a container at a temperature of 350 k. 1) what is the average kinetic energy of an atom of the gas?
The pendulum will temporarily come to rest when it reaches its highest position for a very brief period of time. The pendulum's potential energy is at its highest point at this instant.
What form does the energy take when the mass moves past the equilibrium position in the system?
Elastic potential energy is transformed into kinetic energy as soon as the item begins to move; at equilibrium, only kinetic energy remains.
Which point has the most potential energy?
When the most energy is stored, potential energy is at its highest. When something rises to its greatest point in the air before dropping, when a rollercoaster is about to descend, or when a rubber band is stretched as far before it breaks, are examples of this. After then, potential energy is changed into kinetic energy.
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Different masses are hung on a spring scale calibrated in Newtons.
W(weight) = Given mass in Kg X Gravitational force (9.8 N/Kg)
a. The force exerted by gravity on 1 kg = 9.8 N.
b. The force exerted by gravity on 5 kg = ______ N.
c. The force exerted by gravity on _______ kg = 98 N.
d. The force exerted by gravity on 70 kg = ________ N.
Answer:
2121 newtons
Explanation:
Different masses are hung on a spring, then the different values obtained after solving are 49 N, 10 kg, and 686 N.
What is gravity?The fundamental force of attraction operating on all matter is recognized as gravity, also spelled gravity, in mechanics. It has no impact on identifying the interior properties of common matter because it is the weakest force known to exist in nature.
The formation and growth of planets, galaxies, and the universe are all under the influence of this long-range, cosmic force, which further determines the trajectories of objects throughout the universe and the entire universe.
As per the given information in the question,
1 kg = 9.8 N
(b)
5 kg = 5 × 9.8
5 kg = 49 N
(c)
x kg = 98 N
x = 98/9.8
x = 10 kg
(d)
70 kg = 70 × 9.8
70 kg = 686 N.
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Iron is made up of atoms. The thermal expansion of solid iron is caused by ___.
A. increasing the amplitude of vibration of the iron atoms
B. increasing the distance between equilibrium positions for the vibrating iron atoms
C. the breaking of bonds between the iron atoms
Iron is made up of atoms, the thermal expansion of solid iron is caused by C. the breaking of bonds between the iron atoms.
What is thermal expansion?Thermal expansion can be described as the tendency of matter to change in shape, volume, and area in response to a change in temperature.
It should be noted that the temperature can be seen as a monotonic function of the average molecular kinetic energy of a substance , however When a substance is heated, the Kinetic energy that is present in the molecules will increases then they can start to vibrating more and usually maintain a greater average separation and this process will result to expoansion because bond will be broken.
Therefore, option C is correct.
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a metal head of a hammer hits a nail and pushes it into a wooden board. - the force that hammer exerts on the nail - the force that nail exerts on the board a. the force that nail exerts on the hammer. b. the force that board exerts on the nail c. the force that hammer exerts on the board d. the force that board exerts on the hammer
The force experienced by the hammer and nail is the force that the hammer exerts on the nail and the force that the nail exerts on the board.
This exertion of the force in hammer and nail is due to newton's third law of motion and the conservation of momentum.
Newton's third law states that when two bodies interact, forces of equal magnitude and opposite direction act on each other. The third law is also called the law of action and reaction. This law is important in solving static equilibrium problems where all forces are balanced, but it also applies to bodies in uniform or accelerated motion.
Conservation of momentum states that the momentum remains constant within the problem region. Momentum is neither created nor destroyed, it is changed only by the action of force in the sense of Newton's laws of motion.
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consider two planets in space that gravitationally attract each other. if the mass of both planets is doubled, and the distance between them is also doubled, then the forces between them is * 1 point captionless image a)one quarter b)half as much c)twice as much d)four times as much e)none of these
If the mass of both planets is doubled, and the distance between them is also doubled, then the forces between them is are twice as much.
In physics, a force is a power that can change the motion of an item. A force can purpose an object with mass to alternate its pace. Pressure also can be described intuitively as a push or a pull. A force has both value and path, making it a vector quantity.
Force is a push or a pull and it affects our daily lives because, without force, people might not be capable of opening and near stuff or lifting up their arms or legs.
Variety of Forces :
* Muscular Forces, muscular tissues feature to produce an ensuing force which is referred to as 'muscular force'.
* Frictional Forces, while an item modifications its national motion, 'frictional pressure' acts upon it.
* Carried out pressure.
* Tension force.
* Spring force.
* Gravitational pressure.
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What might cause cosmic radiation to be deflected around Earth?
Earth's magnetic field causes cosmic radiation to be deflected around Earth.
What is magnetic field of Earth?Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.
The magnitude of Earth's magnetic field at its surface ranges from 25 to 65 μT (0.25 to 0.65 G). As an approximation, it is represented by a field of a magnetic dipole currently tilted at an angle of about 11° with respect to Earth's rotational axis, as if there were an enormous bar magnet placed at that angle through the center of Earth.
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an empty storage tank has a volume of 8,190 ft3. what is the buoyant force exerted on it by the air?
The buoyant force exerted in storage tank of volume 8190 ft^3 by the air at STP is 2783.95 N
Given,
Volume of tank = [tex]8190 ft^3[/tex]
The buoyant force is nothing but the upward force exerted on object immersed entirely or partially in a fluid. Buoyant force is also called Upthrust force . A object submerged in a fluid appears to lose weight, i.e. appears to be lighter, due to buoyant force.
Assume that the air is at 0°C and 1 atmospheric pressure.
Buoyant force can be calculated by formula,
[tex]F_B=\rho vg[/tex]
where,
[tex]\rho[/tex] = fluid density of air = [tex]1.225 kg /m^3[/tex]
g=gravitational acceleration = [tex]9.8 m/s^2[/tex]
v=volume in meters = [tex]8190 ft^3 = 231.9m^3[/tex]
[tex]F_B=1.225*231.9*9.8=2783.9N[/tex]
Thus, the buoyant force exerted in tank by air is 2783.N
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a car travels 11.8 m north and then travels 13.3 m east. what is the magnitude of the car's displacement?
The magnitude of car's displacement is 17.78 m.
Given that, distance travelled due north is 11.8 m
Distance travelled due east is 13.3 m
As it is said that the car travels north and then east, it forms the two sides of a right-angled triangle. The magnitude of third side is the magnitude of car's displacement.
From Pythagoras theorem, the expression for car's displacement can be written as,
AC² = AB² + BC²
where, AB and BC are the sides of the right triangle
AC is the displacement of the car
Making AC as subject, we have,
AC = √(AB² + BC²) = √(11.8² + 13.3²) = √(139.24 + 176.89) = 17.78 m
Thus, the magnitude of car's displacement is 17.78 m.
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The resistance of an electric stove element at operating temperature is 11Ω.
a. If 220 V is applied across it, what is the current through the stove element?
b. How much energy does the element convert to thermal energy in 30.0 s?
c. The element is used to heat a kettle containing 1.20 kg of water. Assume that 65 percent of the heat is absorbed by the water. What is the water’s increase in temperature during the 30.0 s?
A. The current through the stove is 20 A
B. The energy converted to thermal energy is 132000 J
C. The increase in temperature during the 30 s period is 17 °C
A. How do I determine the current?
The current through the stove can be obtained as follow:
Resistance (R) = 11 ΩVoltage (V) = 220 VCurrent (I) =?Voltage (V) = Current (I) × resistance (R)
220 = Current × 11
Divide both sides by 11
Current = 220 / 11
Current = 20 A
B. How do I determine the energy?
The energy can be obtained as shown below:
Resistance (R) = 11 ΩVoltage (V) = 220 VTime (t) = 30 sEnergy (E) =?E = V²t / R
E = (220² × 30) / 11
E = 1452000 / 11
Energy = 132000 J
C. How do I determine the increase in temperature?
The increase in temperature can be obtained as follow:
Mass of water (M) = 1.20 Kg = 1.2 × 1000 = 1200 gEnergy = 132000 JPercentage absorbed = 65%Heat absorbed (Q) = 65% × 132000 = 85800 JSpecific heat capacity of water (C) = 4.184 J/gºC Increase in temperature (ΔT) =?Q = MCΔT
85800 = 1200 × 4.184 × ΔT
85800 = 5020.8 × ΔT
Divide both side by 5020.8
ΔT = 85800 / 5020.8
ΔT = 17 °C
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you are looking down at a loop and there is a magnet below the loop with the north pole facing you. as the magnet falls away from you, which way does the induced current flow in the loop?
As the magnet falls away from you the direction of induced current flow anticlockwise in loop.
Suppose we run it above the input to the coil. It is far away so there is no flux . As the magnet descends and approaches the entrance to the coil, part of the magnetic field from the magnet passes through the top few imaginary disks of the coil. The time-varying flux induces a certain EMF. This is the initial rise in the red part of the diagram. As the magnet continues to descend and enter the coil, more of its magnetic field weaves through the imaginary disks in the coil, so as it moves, the time rate of change of the total flux increases, so the EMF rises. Note that the field lines above and below the bar magnet point in the same direction.At some point the rod reaches the center of the coil. At this point, the amount of flux added to the upper half of the coil by the small movement of the magnet equals the amount of flux removed from the lower half. Therefore, at this point the EMF is zero. This is the middle point of the diagram where the EMF crosses the horizontal axis. The descending part of the red part is only an approximation to the middle part of the coil.[tex]d X E=-\frac{dM}{dT}[/tex]
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are the radiating electric field lines around a charged particle straight lines when the particle moves at constant velocity?
No, the radiating electric field lines are not around a charged particle straight lines when the particle moves at constant velocity.
An electric property that is connected with any location in space where a charge exists in any form is electric field. The electric force per unit charge is also termed as electric field. The formula for electric field is: E=F/Q
Where, The electric field is denoted by E, force by F and charge is Q.
When a charged particle is moves with a constant velocity then it is equivalent to an electric current which creates the magnetic field and electric field both around it. An electromagnetic field is generated when charged particles are accelerated. A stationary charge will produce an electric field in the surrounding space.
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Correctly identify the following formed elements. eBook Lymphocyte Neutrophil Eosinophil Platelets Monocyte Basophil Prev 1 of 17 Next >
Granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes are different kinds of white blood cells (T cells and B cells). Histamine is released by basophils to elicit an all-purpose immune response.
While battling germs and parasites, eosinophils can also cause allergic symptoms. B and T cells that function as lymphocytes protect the body from particular invaders. Monocytes remove dead cells from the body. Granulocytes, lymphocytes, and monocytes are the three primary types of white blood cells according to medical experts. All of the body's components receive nutrition and oxygen so they can continue to function. The lungs, kidneys, and digestive system use the blood to transport carbon dioxide and other waste products to be expelled from the body. Additionally, blood transports hormones throughout the body and fights infections.
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what would happen to the planets in a solar system where the central star did not have a strong wind?
The planet's orbits would move inward due to the drag that the gas inside the solar nebula would cause.
A planet's orbit may alter as a result of gravitational collisions with several planetesimals. The buildup of angular momentum transfers during contacts between planetesimals and a planet leads to planetesimal-driven migration.
Although the dust & gases inside a nebula are widely dispersed, gravity can start to gradually gather some of the gas and dust clumps. These clusters' gravitational pull increases as they become larger and larger. The mass of gas and dust eventually grows so large that gravity causes it to collapse.
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Choose the best answer to each of the following. Explain your reasoning with one or more complete sentences. What is the leading hypothesis for Venus's lack of water? (a) Venus formed closer to the Sun and accreted very little water. (b) Its water is locked away in the crust. (c) Its water molecules were broken apart, and hydrogen was lost to space
(c) Its water molecules were broken apart, and hydrogen was lost to space.
The evidence that the Venus once used to have water was the deuterium to hydrogen ratio in the atmosphere of Venus is about 150 times of earth.
Proofs are Venus must have started with oceans worth water.
The water is now escaped because when the UV rays from the sun as fallen upon the water the water molecules were broken and hydrogen went to the space.
And therefore, there is no water now present on the planet Venus.
scientist are still finding ways to discover life on the planet Venus and other planets.
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a satellite is orbiting the earth at an altitude of 290 km. what is the approximate size of the smallest object on earth that an astronaut in the satellite can resolve if the diameter of her pupil is 5.00 mm and the wavelength of light is assumed to be 490 nm?
34.672 m is the approximate size of the smallest object on earth that an astronaut in the satellite can resolve.
L = satellite is orbiting the earth at an altitude of 290 × [tex]10^{3}[/tex] m
λ = wavelength of light is 4.90 × [tex]10^{-7}[/tex] m
d = diameter of her pupil is 5 × [tex]10^{-3}[/tex] m
θ = 1.22 × λ/d= y/L
So, y = 1.22× (λ/d) × L
y = 1.22× (4.90 × [tex]10^{-7}[/tex] m /5 × [tex]10^{-3}[/tex] m) × 290 × [tex]10^{3}[/tex] m
y = 34.672 m
Hence, 34.672 m is the approximate size of the smallest object on earth that an astronaut in the satellite can resolve.
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CAN SOMEONE HELP ME WITH QUESTION d PLEASE I NEED ASAP
Answer:
Below
Explanation:
'Thermistor' is a Thermal Resistor .... the resistance of the thermistor changes with the temperature. The most common type has an increasing resistance as the temperature decreases. ( There are thermistors that have a DECREASE as temp drops) . This changing resistance will change the amount of current through the thermistor and the voltage drop across it .
A certain relay draws 750 mA with 9 V applied What is the power consumption of the relay's coil? 6.75 (within three signilicant digits) For how long can an Energizer 522 V battery operate such relay? Assume baltery capacity of SUU mAA. (within thee signilicant digits)
The Energizer 522 V battery can operate such a relay for approximately 0.69 h.
The power consumption of the relay's coil is 6.75 W. The Energizer 522 V battery has a capacity of 522 mA. To calculate how long the battery can operate the relay, we need to know the current draw of the relay in mA.
Since the current draw of the relay is 750 mA, we can use the following formula:
Time (h) = Battery Capacity (mA) / Current Draw (mA)
Time (h) = 522 mA / 750 mA
Time (h) = 0.69 h
Therefore, the Energizer 522 V battery can operate such a relay for approximately 0.69 h.
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in which scenario would strict liability most likely apply? an airplane's brakes fail in freezing weather. a dishwasher fails to fully clean the dishes. a lightbulb burns out prematurely. a car's radio sometimes stops working.
The scenario "An airplane's brakes fail in freezing weather" is considered under strict liability.
Strict liability is a concept used in both civil and criminal law that holds a defendant accountable for their actions regardless of their intent at the time the action is committed.
It means that someone could be held responsible for a result that they did not intend.
In other words, regardless of criminal intent or possible negligence, a person is strictly liable simply by engaging in certain behaviours.
In business, strict liability refers to when liability is not based on negligence or intent to harm. For example, if you were the headmaster of a public school and hired a teacher with no teaching degree or experience, and that teacher made a mistake and the school was sued, you would be held completely liable.
Thus, from the given statements, the statement " an airplane's brakes fail in freezing weather." should apply for strict liability.
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In the definition of weight, W = mg, the mass m refers to an inertial mass.
True or false
For a cart moving along a track with the x-axis parallel to the track, all forces acting on the cart must be along the x-direction.
True or false
If the cart is moving on the positive x axis, the x-component of velocity must be positive.
True or False
The mass m used in the formula for weight, W = mg, refers to passive gravitational mass rather than inertial mass.
Objects accelerate due to imbalanced forces. However, not every item accelerates at the same rate in the presence of the same imbalanced force. A mass quantity called inertial mass determines the body's inertial resistance to acceleration when responding to all types of force.The gravitational force a body experiences while in the gravitational field, or g, is what determines its gravitational mass.
It is untrue that all forces acting on a cart going along a track with the x-axis perpendicular to the track must travel in the x direction. Because they might cancel each other out, the forces in the y direction.It is true that the x-component of velocity must be positive if the cart is travelling along the positive x axis.To learn more about inertial mass click here https://brainly.com/question/27750078
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You make yourself and your friend a cup of hot chocolate and add vanilla ice cream. You quickly enjoy yours, but your friend takes a long time to come, so you get to observe theirs as a science experiment.
In what direction does the heat flow? (2 points)
Describe how the kinetic energy of the hot chocolate changes once you add the ice cream. (2 points)
How does the kinetic energy of the ice cream change once you put it in the hot chocolate? (2 points)
What happens to the temperature of each substance? Be specific. (2 points)
When will the temperature of the ice cream and the hot chocolate stop changing? (2 points)
Answer:
How does the kinetic energy of the ice cream change once you put it in the hot chocolate?
Explanation: ice cream is cold when the hot chocolate is hot
Answer:
Explanation:
Heat always flows from HOT to COLD.
KE of hot chocolate decreases.
KE of ice cream increases.
Temp. of hot chocolate decreases (it cools down), temp. of ice cream increases (it warms up).
Temp. of each will stop changing when the 2 substances reach equilibrium (no more flow of heat).
A 49 kg girl rides on a 4.2 kg skateboard. The girl on the skateboard moves at 1.0 m/s. If the girl jumps off the skateboard backwards with a velocity of 1.6 m/s, how fast does the skateboard roll away?
A 49 kg girl rides on a 4.2 kg skateboard. The girl on the skateboard moves at 1.0 m/s. If the girl jumps off the skateboard backwards with a velocity of 1.6 m/s, the skateboard rolls away at 31.3 m/s.
What is the Law Of Conservation Of Linear Momentum?
Law of conservation of linear momentum states that the total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and speed v is
P=mv.
If we have a system of bodies, then the total momentum is the sum of the individual momentums:
P = m₁v₁ +m₂v₂
If a collision occurs and the velocities change to v', the final momentum is:
P' = m₁v₁' +m₂v₂'
Since the total momentum is conserved, then:
P = P'
m₁v₁ +m₂v₂ =m₁v₁' +m₂v₂'
A girl of m1 = 49 kg rides an m2 = 4.2 kg skateboard and the common speed is v1 = v2= 1 m/s.
The girl jumps off the skateboard backward with a speed of v1'=-1.6 m/s (negative because it's opposite to the original direction). It's required to find the final speed of the skateboard. It will be calculated by solving for v2':
v₂'= m₁v₁ +m₂v₂ - m₁v₁' / m₂
= (49 × 1) + ( 4.2 × 1 ) - ( 49× (- 1.6) / 4.2
Calculating the values,
= 31.3 m/s.
The skateboard rolls away at 31.3 m/s.
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7. Which of the following is not an agent of erosion? A. glacier B. rocks C. water D. wind 8. Which of the following cannot be considered as a role of gravity in erosion? A. It moves glaciers down slope.B. It loosens the land materials, c. In mountains, it moves down large slabs of rocks. D. It acts as agents of mass wasting like landslides, fall, mudflows, and avalanches, 9. What term refers to the process wherein rocks break down into pieces? A. deposition B. erosion C. mass wasting D. weathering 10. What process of chemical weathering is involved when water reacts with one mineral to form a new mineral like feldspar into clay? A. dissolution B. hydrolysis C. oxidation D. pressure 11. What type of mechanical weathering occurs when freezing of water and repeated thawing in cracks of rocks? A. abrasion B. frost wedging C. oxidation D. solution 12. Which of the following does NOT cause chemical changes in the composition of rocks? A. abrasion B. dissolution C. hydrolysis D. oxidation 13. What chemical reaction takes place during rusting of iron? A. abrasion B. dissolution C. hydrolysisD. oxidation
7 A. glacier, 8 B It loosen the land material, 9 D Weathering, 10 B Hydrolysis 11 B Frost wedging, 12 A abrasion,13 D oxidation.
Any chemical reaction in which a water molecule breaks one or more chemical bonds is called hydrolysis (/hadrlss/; from the Ancient Greek hydro-, "water," and lysis, "to unbind"). When water is the nucleophile, the phrase is used generically to refer to substitution, elimination, and solvation processes. The cleavage of biomolecules known as biological hydrolysis occurs when a water molecule is consumed in order to cause the division of a bigger molecule into its component parts. Saccharification is the process of hydrolyzing a carbohydrate into its individual sugar molecules, as occurs when sucrose is broken down into glucose and fructose.
A condensation. reaction, in which two molecules. combine to form a bigger. one and expel. a water molecule, can be reversed. by a hydrolysis. reaction. In order to break down, hydrolysis adds water.
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g find the net electric force that the two charges would exert on an electron placed at point on the x-axis at x = 0.200 m.express your answer with the appropriate units. enter positive value if the force is in the positive x-direction and negative value if the force is in the negative x-direction.
The net electric field on charges are -537 N/C.
The electric field is a vector magnitude, so we must add them as vectors. The electric field equation is
E = k q / r²
Where k= Coulomb constant that you are worth 8.99 * 10⁹ N m²/C², that the magnitude of the load and r = distance between the load and the test load.
Let's find the field created by each charge at the point x = 0.200 m
Charge 1
This charge is at the origin, the distance is
x₁ = 0.200 m
q₁ = 3 nC = 3 * 10^-9 C
E1 = k q₁ / x₁²
E1 = 8.99 * 10⁹ * 3* 10⁻⁹ / 0.2²
E1 = 674.25 N / C
Charge 2
This load is the point a = 0.800 m, so the distance to the test charge at 0.200 m
x₂ = 0.800 - 0.200
x₂ = 0.600 m
q₂ = -5.5 nC = -5.5 * 10-9 C
E2 = 8.99 * 10⁹ * 5.5 * 10⁻⁹ / 0.600²
E2 = 137.35 N / C
We already have the value of each field, add them vectorially, remember that if the charges are of the same sign they repel and if they are of the opposite sign they attract, the field E1 is directed to the left and the field E2 is directed to the right.
Et = -E1 + E2
Et = -674.25 + 137.25
Et = -537 N / C
The field is headed to the left.
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the cessna cardinal, a single-engine light plane, has a wing area of 16.2 m2 and an aspect ratio of 7.31. assume the span efficiency factor is 0.62. if the airplane is flying at standard sea-level conditions with a velocity of 200 km/h, what is the induced drag when the total weight is 9800 n?
The cessna cardinal, a single-engine light plane, has a wing area of 16.2 m2 and an aspect ratio of 7.31 with span efficiency factor of 0.62 then the induced drag when the total weight is 9800N is 29.951N
Given wing area (A) = 16.2m^2
Aspect ratio (r) = 7.31
efficiency factor (e) = 0.62
Weight of plane (W) = 9800N
velocity of airplane (v) = 200km/h = 200x5/18 = 55.5m/s
Dynamic pressure (p) = 1/2ρv^2 where ρ is density of plane = 1.225
p = 1/2x1.225x55.5x55.5 = 1886.6
Lift coefficient Cl = W/pxA = W/1/2ρv^2A where A is the area of wing
Cl = 9800/1886.6x16.2 = 0.32
Induced drag coefficient (Cd) = Cl^2/πer^2 = 0.32x0.32/πx0.62x7.31x7.31 = 0.98x10-3
Induced drag (d) = pxAxCd = 1886.6x16.2x0.98x10-3 = 29.951N
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a supersonic aircraft is flying parallel to the ground. when the aircraft is directly overhead, an observer sees a rocket fired from the aircraft. 9.98 s later the observer hears the sonic boom, followed 2.3 s later by the sound of the rocket engine. what is the mach number of the aircraft? brainly
A sonic boom is a shock wave that is produced when an object moves through the atmosphere of Earth at supersonic speed and is audible to people on the ground as a loud explosion.
How does a sonic boom happen?
Sonic boom is an abrupt sound resembling thunder. It is brought on by a substance moving at a speed greater than the speed of sound, or roughly 750 miles per hour. Similar to how a ship's bow causes water waves, an airplane flying through the atmosphere continuously creates air-pressure waves as well.
Can pilots hear the boom of the sonic?
The "boom carpet" is the name of this route. Pilots don't hear sonic booms, in case you were wondering how they react to them. People inside the aircraft cannot hear the sonic boom, but they can see the pressure waves that are surrounding it. The boom carpet unfolds behind the aircraft like a ship's wake.
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an electric current transports of charge in milliseconds. calculate the size of the electric current.
The size of the electric current is 155 Amperes.
Calculation:
I = Q / t
I = 93.0 C / 0.601 s
I = 155 C/s
I = 155 A
Electric current is the flow of charged particles such as electrons and ions, that travel through a conductor or space. It is measured as the net flux of charge to the surface or control volume. Electricity starts with atoms.
Atoms are made up of protons neutrons and electrons. Electricity is generated when electrons are moved from atom to atom by an external force. The flow of electrons is called current. Current refers to the flow of current in an electronic circuit and the amount of current that flows through the circuit.
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