Endorphin release during active coping elements with stresses acts to shut down or quiet the septo-hippocampal circuit in the brain. This helps to lower stress levels and the activation of the stress response, both of which can have a favourable impact on overall health and well-being. Endorphins can help to reduce the long-term effects of persistent stress on the body and mind by decreasing the stress response.
When active coping attempts with environmental stressors are successful, endorphins are released in the brain, which aid in stress reduction and pain relief. Endorphins are a class of naturally occurring peptides that act on the body in the same way that opioids like morphine do.
The septo-hippocampal circuit of the brain is in charge of moderating the stress response as well as regulating anxiety, mood, and memory. When the circuit is triggered, stress chemicals such as cortisol are released, which can have long-term deleterious effects on the body and mind.
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5) If the eastward component of vector is equal to the westward component of vector and their northward components are equal. Which one of the following statements about these two vectors is correct?
1) Vector is parallel to vector
. 2) Vectors and point in opposite directions
. 3) Vector is perpendicular to vector
. 4) The magnitude of vector is equal to the magnitude of vector .
5) The magnitude of vector is twice the magnitude of vector .
The correct statement is "Vectors and point in opposite directions". If the eastward component of one vector is equal to the westward component of another vector and their northward components are equal, then the two vectors are equal in magnitude and opposite in direction.
The direction of the vectors is determined by the direction of their components, so if the components in opposite directions are equal, the vectors must point in opposite directions. This means that when the two vectors are added, their components cancel and the result is a zero vector. The magnitude of each vector remains the same, but their direction is different.
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A positive object touches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?.
The leaves are getting closer.
An electroscope is an early scientific instrument used to detect the presence of electrical charges in a body. The charge is detected from the motion of the test object due to the Coulombic electrostatic force acting on the test object. The amount of electric charge on an object is proportional to the voltage. The electroscope consists of a metal button and he two blades. When a negatively charged object is brought close to the instrument, the blade will repel and move away. There are two types of electroscopes: the medulla electroscope and the gold foil electroscope. When a negatively charged object is brought close to the electroscope, the charge induces a positive charge on the leaves. So nothing should happen. However, induction causes the leaves to move closer together.
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true or false : the magnitude of a vector can be different in different coordinate systems?
False.The magnitude of a vector is a scalar value that represents the magnitude of the physical quantity that the vector represents. This value is independent of the coordinate system used to describe the vector.
The magnitude of a vector is determined by the magnitudes of its components and the directions they point in, and it is a property of the physical quantity that is represented by the vector. This property remains constant, regardless of the coordinate system used to describe the vector, and is therefore considered an invariant property.
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why is interpretation an important part of meterorology
The study of the atmosphere and the phenomena it causes, such as weather and climate, is known as meteorology.
What is Meterology?It's common to think of meteorologists as weather forecasters. Indeed, some meteorologists do that.
Weather forecasting is a challenging procedure that calls both both cutting-edge modern equipment and some time-tested methods. Meteorologists conduct study and act as observers.
They observe the atmospheric conditions above them and examine maps, satellite data, and radar data. Various types of weather information from local, regional, and international sources are also compared.
Therefore, The study of the atmosphere and the phenomena it causes, such as weather and climate, is known as meteorology.
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A region has a uniform electric field pointing to the right. Which is most likely true? A. This electric field could only be caused by negative charges. B. There are positive charges to the left of, and/or negative charges to the right of this region. C. This electric field could only be caused by positive charges. D. There are positive charges to the right of, and/or negative charges to the left of this region.
A region has uniform electric field pointing to the right, most likely true is D.) There are positive charges to the right of, and/or negative charges to the left of this region.
What is electric field?Electric field is the physical field that surrounds electrically charged particles and exerts force on all other charged particles in field either attracting or repelling them.
A uniform electric field is caused by a distribution of electric charges. If the electric field points to the right, there must be a net positive charge to the right of the region and/or a net negative charge to the left of the region. It is not possible for the electric field to be caused by only positive or only negative charges.
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give an example of a phenomenon occurring in nature. write which natural sciences study them.
The formation of fossils by the decomposition of dead plants and animals across millions of years is a phenomenon in nature studied by paleontology and geology.
What is the formation of fossils?The formation of fossils is a process associated with the decomposition of dead plants and animals along with million of years in earth's history, which is a process studied by geologists and also paleontologists.
Therefore, with this data, we can see that the formation of fossils occurs due to the process of the decomposition of dead plants and animals and it is studied in geology.
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You have been tasked with deriving the empirical formula of butadiene. What steps would you take to find the formula? What is the empirical formula?
Write down the molecular formula after counting the number of atoms of each kind in a molecule's structure. Calculate the proportion of each type of atom in the condensed molecular formula.
What exactly are empirical formulas?An empirical formula is a compound's chemical formula that only specifies the ratios of the elements it contains and not the precise number or arrangement of atoms. This would be the compound's element with the lowest whole number ratio. The empirical formula of butadiene is C3H3.
Typically, the empirical formula is used to only display the components of a molecule. When one wishes to quickly identify the elements they are working with, this is helpful. When you want to know how many atoms of each element are present in the molecule, the molecular formula is the most helpful.
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If a wave has a speed of 362 m/s and a period of 4. 17 ms, what is its wavelength?.
Important Formulas:
[tex]v=\lambda f[/tex]
velocity(measured in m/s) = wavelength(measured in meters) * frequency(measured in hertz)
[tex]f=\dfrac{1}{T}[/tex]
frequency(measured in hertz) = 1 / period(measured in seconds)
__________________________________________________________
Given:
[tex]v=362m/s[/tex]
[tex]T=4.17s[/tex]
[tex]\lambda=?[/tex]
__________________________________________________________
Finding frequency:
[tex]f=\dfrac{1}{T}[/tex]
[tex]f=\dfrac{1}{4.17}[/tex]
[tex]f=0.24Hz[/tex]
__________________________________________________________
Rearranging formula for velocity to make wavelength the subject:
[tex]v=\lambda f[/tex]
[tex]\dfrac{v}{f} =\dfrac{\lambda f}{f}[/tex]
[tex]\lambda=\dfrac{v}{f}[/tex]
__________________________________________________________
Finding wavelength:
[tex]\lambda=\dfrac{v}{f}[/tex]
[tex]\lambda=\dfrac{362}{0.24}[/tex]
__________________________________________________________
[tex]\boxed{\lambda=1508.33m}[/tex]
the force between two charges separated by a distance d is f. if the charges are pulled apart to a distance 3d, what is the force on each charge?
The force on the charge is provided by F = qE, just as the force on the mass m is given by F = mg. We can expand the analogy between gravity and electrostatics to include energy, but we'll get to that later. 1/9 F F=QQK/(3d)2 since Fo=QQK/d2.
What does a force mean in science?The word "force" has a clear meaning. At this level, using the terms "push" or "pull" to express a force is entirely reasonable. A force is just not something an object "has in it" or that it "contains."
What is the fundamental meaning of a force?An object having mass changes its velocity in response to a push or a pull. An external force can alter the resting state of a body.
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it takes 250.0 J to raise the temperature of a 50.0g sample of a metal by 10.0 C. what is the specific heat capacity of this metal?
A.) 1.25x10^2kJ/g*K
B.) 5.00x10^-4 J/g*K
C.) 1.25x10^5 J/g*K
D.) 50.0 J/g*K
E.) 0.500 J/g*k
5.00x10^-4 J/g*K.The specific heat capacity (C) is given by the equation C = Q/mΔT.
What is specific heat capacity ?Specific heat capacity is the amount of thermal energy required to raise the temperature of a unit mass of a substance by one degree. It is typically measured in joules per kilogram-Kelvin (J/kg-K). Specific heat capacity is an important thermodynamic property since it is related to the amount of energy needed to increase the temperature of a material. It is also related to the amount of heat released or absorbed when a material undergoes a change of temperature. In general, materials with higher specific heat capacity require more energy to increase their temperature, and materials with lower specific heat capacity require less energy.
where Q is the energy, m is the mass, and ΔT is the temperature change. Therefore, C = 250.0 J/ (50.0 g*10.0 C) = 5.00x10^-4 J/g*K.
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now, classify the units of the measurements as units of length, mass or volume.
The mole fraction is a unitless quantity as it is a ratio of the number of moles of a component in a mixture to the total number of moles of all components. It does not have a unit of length, mass or volume.
Length is typically measured in units such as meters, centimeters, or inches.
Mass is typically measured in units such as grams, kilograms, or pounds.
Volume is typically measured in units such as liters, milliliters, or fluid ounces.
A unit is a standard measure of a physical quantity that allows for comparisons and communication of measurements. It provides a common reference point for describing and quantifying physical properties. Units can be used to measure various quantities such as length, mass, time, temperature, energy, and many others. There are two main types of units: base units and derived units. Base units are the fundamental units of measurement, such as meters for length, kilograms for mass, and seconds for time. Derived units are units that are derived from combinations of base units and are used to express more complex quantities such as velocity, force, and pressure. The International System of Units (SI) is the most widely used system of units and provides a standardized set of base units for scientific and technological purposes.
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the relative frequency of students working less than 10 hours is __
The relative frequency of students working 9 hours or less lie in the 0−9 hours group.
So, total number of students =40.
A frequency is the number of times an event occurs. The concept of relative frequency is experimental rather than theoretical. Because it is an experimental one, different relative frequencies may be obtained when the experiments are repeated. We need to calculate the frequency.
The total population's frequency count
A population subgroup's frequency count
If we know the above two frequencies, we can calculate the relative frequency probability as follows. A subgroup formula is as follows:
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the cystic duct merges with the common bile duct to form the common hepatic duct
Correct, that is correct. The cystic duct carries bile from the gallbladder to the common bile duct, which is formed by the union of the cystic duct and the common hepatic duct.
The common hepatic duct carries bile from the liver to the duodenum, where it helps to digest fats. The common hepatic duct and the cystic duct merge to form the common bile duct, which carries bile to the duodenum. The common bile duct is a key part of the biliary tract, which is responsible for the production and excretion of bile into the small intestine. Bile is an important substance that helps to emulsify fats, aiding in their digestion and absorption.
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A tudent puhe a box, cauing it to lide. But the tudent doe not move. What i true about the net force on the tudent and the box?
The net force on the student and the box is zero, because the student and the box are both exerting the same amount of force on each other.
The net force on the student and the box is zero because the student and the box are both exerting the same amount of force on each other. This is because the student is pushing on the box with an equal force to the one the box is pushing back with. This is known as Newton's third law of motion - for every action there is an equal and opposite reaction. Therefore, the two forces are balanced and the net force on the student and the box is zero. This means that the student and the box will stay in the same position, as they are not being moved by any external force.
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11. The potential energy of a cannonball with a mass of 32-kg is 16000 J. How
high was the cannonball to have this much potential energy?
Based on the force exerted on the two objects, the potential energy equation is determined.The cannon ball was thus 35.7 meters high.
The cannonball had this much potential energy, but how high was it?Based on the force exerted on the two objects, the potential energy equation is determined.P.E. = mgh, where m is the mass in kilograms, g is the acceleration caused by gravity (9.8 m/s2 at the earth's surface), and h is the height in meters, is the formula for gravitational force.
A cannon ball weighs 40 kg and has a potential energy of 14000 J, according to the information provided.
We must ascertain its height.
We'll apply the formula.
P.E = mgh
h thus equals P.E./mg.
P.E. stands for potential energy.
kg is mass, and
Gravitational acceleration (g) (9.8 m/s2)
h is the displacement of the object's height in meters.
h = P.E. / mg
h = 14000 / 40 × 9.8
h = 14000 / 392
h = 35.7
The cannon ball was thus 35.7 meters high.
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a movable bin and its contents have a combined weight of 2.1 kn. draw the free-body diagram of the entire structure. (you must provide an answer before moving on to the next part.) the free-body diagram is
When two surfaces touch, they exert a force that prevents the two surfaces from sliding past one another. Static friction is the name of this force.
The body's net force's strength and direction. All of the forces acting on a moving object are depicted in the free-bod diagram. Every force, in particular, is represented by an arrow, the direction of which corresponds to the force's direction and whose length corresponds to the force's magnitude. Therefore, the net force can be estimated from a free body diagram. In reality, one may calculate the net force acting in each of the two directions by examining the forces acting along the horizontal and vertical axes independently. These two forces then stand in for the constituent parts of the final force (net force) acting on the item.
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A 4.0 Ω resistor, a 7.0 Ω resistor, and a 10.0 Ω resistor are connected in parallel across a 24.0 V battery.
What is the equivalent resistance of the circuit?
Answer in units of Ω.
What is the current in the 4.0 Ω resistor? Answer in units of A.
What is the current in the 7.0 Ω resistor? Answer in units of A.
What is the current in the 10.0 Ω resistor? Answer in units of A.
The equivalent resistance of the circuit is calculated to be 2.0 Ω.
What is equivalent resistance of the circuit?The equivalent resistance of a circuit connected in parallel is given by the reciprocal of the sum of the reciprocals of the individual resistances.
1/R_eq = 1/R1 + 1/R2 + 1/R3
Where R1 = 4.0 Ω, R2 = 7.0 Ω, and R3 = 10.0 Ω. Plugging in the values, we get:
1/R_eq = 1/4.0 + 1/7.0 + 1/10.0 = 0.25 + 0.1429 + 0.1 = 0.4929
R_eq = 1/0.4929 = 2.0 Ω
So, the equivalent resistance of the circuit is 2.0 Ω.
Current in the 4.0 Ω resistor:
I = V/R = 24.0/4.0 = 6.0 A
So, the current in the 4.0 Ω resistor is 6.0 A.
Current in the 7.0 Ω resistor:
I = V/R = 24.0/7.0 = 3.43 A
So, the current in the 7.0 Ω resistor is 3.43 A.
Current in the 10.0 Ω:
I = V/R = 24.0/10.0 = 2.4 A
So, the current in the 10.0 Ω resistor is 2.4 A.
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radio signals 9 billion light years what did it say?
Unfortunately, it is impossible to "speak" anything literally with radio waves that are 9 billion light-years away.
Radio transmissions are only electromagnetic waves that transmit information; meaning cannot be inferred from them without the appropriate tools and a context. The fact that light moves at a finite speed and takes 9 billion years to reach us should also be taken into consideration. As a result, any information carried by radio waves would be billions of years old and might not be applicable to the current condition of the universe.
In radio transmission, a radio transmitter's antenna couples electromagnetic energy into the atmosphere or other open space. Electromagnetic radio waves are caught by a receiving antenna during radio reception and coupled into a receiver for detection.
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What is internal resistance and ideal voltmeter?
Internal resistance means the resistance from battery or cell, that is, the opposition to the flow of current offered by the cells and batteries.
The ideal voltmeter is a voltmeter that does not influence the circuit, because the current passing through it is zero, this is not practically possible.
The internal resistance of an ideal voltmeter is infinity.
What is resistance?Resistance is a unit used to measure the opposition to current flow in an electrical circuit and is measured in ohms.
What is voltmeter?It is an instrument used to measure potential difference in volts.
What is current?The rate at which electrons flow past a point in a complete electrical circuit and current flows in opposite direction than that of electrons.
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how much work is required to move a 8.0-c positive charge from the negative terminal of a 9.0-v battery to the positive terminal?
The charge multiplied by the voltage of the battery, or 8.0-c x 9.0-v = 72.0 joules of work.
What is the voltage ?Voltage is the difference in electric potential energy between two points in an electrical field. It is a measure of the potential energy that is available to push electrons from one point to another. Voltage is measured in volts (V), and is the product of electric potential (measured in volts per meter) and the distance between the two points. In a direct current (DC) circuit, voltage can be generated by a battery or other external power source, or it can be generated from an alternating current (AC) source, such as a generator or power line.
The work required to move a 8.0-c positive charge from the negative terminal of a 9.0-v battery to the positive terminal is equal to the amount of energy required to move the charge, which is equal to the charge multiplied by the voltage of the battery, or 8.0-c x 9.0-v = 72.0 joules of work.
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Horizontal Distance = 5601.24188 m ✅️ Time of Collision = 9.07818 s ✅️
Value of Rocket Constant A = ?
The speed of the object as we can see in the solution to the problem is obtained as 617 m/s.
What is the velocity of the rocket?
We know that velocity is the ratio of the distance that have been covered to the time that have been taken. We have to note that the velocity is a vector quantity as as such the direction is also quite very important.
Now we know that;
Horizontal Distance = 5601.24188 m
Time of Collision = 9.07818 s
Velocity = 5601.24188 m /9.07818 s
= 617 m/s
The speed is 617 m/s
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In an ionic solution, a current consists of Ca2+Ca2+ ions (of charge +2e+2e) and Cl−Cl− ions (of charge −e−e) traveling in opposite directions. Part A If 5. 02×1018 Cl−Cl− ions go from A to B every 0. 620 minmin , while 3. 25×1018 Ca2+Ca2+ ions move from B to A, what is the current (in mAmA) through this solution? Part B In which direction (from A to B or from B to A) is the current in part A going?
A. We must determine the net current flowing over the solution in order to compute the current. The drop in the number of ionized particles going from B towards A and the amount of negative ion moving from A to B determines the net charge flow.
Net charge flow = (3.25 x 10^18 ions of Ca2+/ion)(+2e/ion) - (5.02 x 10^18 ions of Cl-/ion)(-e/ion)
Net charge flow = (6.5 x 10^18 e) - (-5.02 x 10^18 e)
Net charge flow = 11.52 x 10^18 e
Since 1 Coulomb (C) = 6.24 x 10^18 e, the net charge flow is equal to 11.52 / 6.24 = 1.85 C.
Since the time interval is 0.620 min, the current can be calculated as:
Current = charge flow / time
Current = (1.85 C) / (0.620 min) = 2.99 A.
Since 1 A = 1000 mA, the current in mA is:
Current = 2.99 A x 1000 mA/A = 2990 mA
B. The current is going from B to A.
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How much does 16 oz of water weigh in pounds?
Water weighing 16 ounces is pounds. One pound (lb) is equivalent to ounces (oz) of water.
Is 8 ounces of water really 8 ounces?Only when energy water or even other liquid with a similar consistency are ounces by weight or ounces by volume equivalent. 8 ounces of water, for instance, weigh 8 fluid ounces when measured by volume. The situation with flour, however, is very different and complicated.
Is 16 ounces of water each day okay?As a result, the amount of water you should consume each day may change based on what else you're working, eating, and drinking. The Us Academies of Sciences' Institute of Medicine actually advises.
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Help please!
Solve for the wavelength (while showing your work completely) in meters of a wave from ‘The Jet’ in Seattle, which transmits at 95.7 MHz. M here means ‘mega’, which means x 1 million or x 106. Remember that the speed of light, and so the speed of radio waves is also 3.00 x 108 m/s.
The wavelength of the wave with the frequency of 95.7 MHz is 3.1 meters.
What is Wavelength?Wavelength is the distance between identical points such as crests or troughs in the adjacent cycles of a waveform signal which is propagated in space or along a wire. In the wireless systems, this length is usually specified in the units of meters (m), centimeters (cm) or millimeters (mm).
λ = v/f
where, λ = wavelength of the wave,
v = velocity of the wave,
f = frequency of the wave
f = 95.7 MHz = 95.7 × 10⁶Hz,
v = 3 × 10⁸ m/s
λ = 3 × 10⁸ / 95.7 × 10⁶
λ = 0.031 × 10²
λ = 3.1 meters
Therefore, the wavelength of the wave is 3.1 meters.
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solutions of electrolytes are formed from nondissociating molecules that are nonconductors of electricity. an example would be sugar dissolved in water.
The statement that solutions of electrolytes are formed from non-dissociating molecules that are nonconductors of electricity is false.
Electrolytes are substances which when mixed in water produce ions which can conduct electricity because of mobility provided by anions and cations, i.e., negatively charged and positively charged ions.
Non-dissociating molecules are those which cannot break down into radicals, ions or atoms. In an electrolyte solution, dissociation is important in order to produce the ions which produce charge or electricity in the solution, hence facilitating the movement of these ions through the solution. For example, hydrochloric acid dissociates in water to produce H+ and Cl- ions.
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An eccentric circular cam, which serves a similar function as the Scotch yoke mechanism in Problem 11.13, is used in conjunction with a flat face follower to control motion in pumps and in steam engine valves. Knowing that the eccentricity is denoted by e, the maximum range of the displacement of the follower is dmax, and the maximum velocity of the follower is vmax, determine the displacement, velocity, and acceleration of the follower.
The maximum range of the displacement of the follower is dmax = e, the maximum velocity of the follower is vmax = eω,The maximum range of the acceleration is amax = eω2
Displacement: The displacement of the follower is given by the equation d = e sinθ, where θ is the angular position of the cam. To determine the maximum displacement, dmax, we can set the sine of θ equal to 1, giving dmax = e.
Velocity :The velocity of the follower is given by the equation v = eω cosθ, where ω is the angular velocity of the cam. To determine the maximum velocity, vmax, we can set the cosine of θ equal to 1, giving vmax = eω.
Acceleration :The acceleration of the follower is given by the equation a = eω2 sinθ. To determine the maximum acceleration, we can set the sine of θ equal to 1, giving amax = eω2.
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does temperature affet how high a ball bounces science project
The heat of the ball is one element that might affect how it rebounds. A ball will bounce faster than a cold one if it is warmer.
What degree of heat is insufficient for people?People frequently cite a 2010 study that determined the maximum limit of safety to be a wet-bulb temp of 35 C, or 95 F at 100% humidity or 115 F at 50% humidity. At this temperature, the normal body is incapable of cool itself by draining moisture from the skin.
Is 37 degrees F hot or cold?Your body temperature is usually approximately 37 °C. When the temperature is 37.8°Temperature or greater, you frequently develop a fever. You can feel shivery, chilly, or warm.
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a drill requires 230v and is used for 15 minutes. The current that runs through the drill is 12A. How much energy doe the drill use?
For working 15 minute, the energy used by the drill is 2484 KJ.
What is electric power?The rate at which electrical energy is carried over an electric circuit is known as electric power. The watt, or one joule per second, is the SI unit of power. Watts are subject to the same standard prefixes as other SI units: kilowatts, megawatts, and gigawatts are used.
Electric power of the circuit is = 230 × 12 Watt = 2760 Watt.
For working 15 minute, the energy used by the drill is = 2760 × 15 × 60 joule
= 2484 KJ.
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A cart with a ma of 120 kg collide with a tationary dumpter with a ma of 300 kg. Both the cart and the dumpter are free to roll in any direction. The cart and the dumpter tick together after the colliion and move at 0. 5 m/. What other information i needed to determine the final momentum of the dumpter?
No other information is required to find the momentum of the dumpster, the final momentum of the dumpster is 150 kgm/s.
The cart with a mass Ma of 120 Kg collides with a stationary dumper of mass 300 Kg.
The dumper and the cart are free to roll in any direction and after collision they move with a speed of 0.5 m/s.
No further information is required to find the final momentum of the dumpster.
We can simply use the formula,
Momentum = Final speed x mass
Momentum of dumpster = 0.5 x 300
Momentum of dumpster = 150 Kgm/s.
So, the final momentum of the dumpster is 150 kgm/s.
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Even though nuclear fusion releases more energy than nuclear fission for the
same mass of reactants, the energy from nuclear fusion cannot yet be
generated to power homes and businesses. Why is this so?
There have been issues with the energy required to create the conditions necessary for fusion, despite the fact that it produces more energy than fission.
What do reactant and product mean?Chemical compounds known as reactants are those that take part in chemical reactions and produce new substances known as products. The new compounds that are created in a chemical reaction between reactants are called products.
Does water react?In a chemical reaction, the arrow denotes the reaction's direction. The equation might appear something like this if we used the scientific names for the component parts. It is clear from this reaction's reactants, hydrogen and oxygen, that they combine to create the chemical molecule H2O, or water.
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