The speed of the two-blob system immediately after collision can be calculated using the conservation of momentum principle. According to this principle, the total momentum of a closed system remains constant if no external forces act on it. In this case, the initial momentum of the 4 kg blob is 4 kg x 5 m/s = 20 kg m/s and the initial momentum of the 2 kg blob is 0 (at rest).
The total initial momentum is 20 kg m/s. After the collision, the two blobs stick together and form a single 6 kg blob, so the final momentum of the system is mv, where m is the total mass of the system (6 kg) and v is the velocity of the system.
From the conservation of momentum principle, we have:
m1 x v1 + m2 x v2 = mf x v
where m1, v1 are the mass and velocity of the first blob before the collision, m2, v2 are the mass and velocity of the second blob before the collision, mf is the total mass of the system after the collision (6 kg), and v is the velocity of the system after the collision.
Substituting the values, we get:
4 kg x 5 m/s + 2 kg x 0 m/s = 6 kg x v
Solving for v, we get:
v = (4 kg x 5 m/s) / 6 kg = 1.3 m/s
So, the speed of the two-blob system immediately after collision is 1.3 m/s.
Learn more about Speed:
brainly.com/question/28224010
#SPJ4
the displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion , where is measured in seconds. find the average velocity during each time period:
The average velocity of a particle moving back and forth along a straight line can be found by calculating the displacement over a given time period and dividing it by the time elapsed.
Find the average velocity during each time period?Average velocity = (Displacement)/(Time Period)For example, if the displacement during the period from 0 seconds to 5 seconds is 10 cm, then the average velocity during that period would be 2 cm/s:Average velocity = (10 cm)/(5s) = 2 cm/sThis is known as the average velocity equation, and it is given by: v_avg = (x_f - x_i)/(t_f - t_i)where x_f and x_i are the final and initial displacement of the particle respectively, and t_f and t_i are the final and initial time, respectively. Therefore, for a given time period, the average velocity is equal to the change in displacement over the change in time. For example, if the displacement of the particle is given by the equation of motion , where is measured in seconds, and the time period is given by seconds, then the average velocity during this period can be calculated as follows:v_avg = (x(t_f) - x(t_i))/(t_f - t_i)
= (x(2) - x(1))/(2 - 1)
= (2 - 1)/(2 - 1)
= 1 cm/s
Therefore, the average velocity of the particle during the given time period is 1 cm/s.To learn more about The average velocity refer to:
https://brainly.com/question/24739297
#SPJ4
What mass of water (at 4.0 degrees C) can be contained in a rectangular box whose dimensions are 10.0 com by 5.00cm by 1.00cm? the density of water at 4.0degrees C is 1.000*10^3kg/m^3.
The required mass of water when the dimensions of the rectangular box are given is calculated to be 0.05 kg.
The given temperature is 4 °C.
The dimensions of the rectangular box are 10 cm × 5 cm × 1 cm
Volume v = 10 × 5 × 1 × 10⁻⁶ m³ = 50 × 10⁻⁶ m³
Density of water at 4 °C = 1.0 × 10³ kg/m³
The expression to calculate mass of the water,
ρ w = m w/V
where,
ρ w is density of water
m w is mass of water
V is volume
Making m w as subject, we have,
m w = ρ w × V = 1.0 × 10³ × 50 × 10⁻⁶ = 0.05 kg
Therefore, the required mass of water is calculated to be 0.05 kg.
To know more about mass:
https://brainly.com/question/5524453
#SPJ4
the speed of light in empty space is approximately 300,000km/s. how many seconds would it take a pulse of light at this speed to get from the earth to the moon? assume that the distance from the earth to the moon is 384,400 km. choose the closest answer:
Answer:
Below
Explanation:
384 400 km / 300 000 km/s = 1.28 seconds
1. Renu has the following symptoms.
swelling of the feet, loss of feeling in hands and feet
sores in the mouth loss of appetite
The type of diet she needs to eat should be rich in --------
A
vitamin B B
iodine
C
calcium D
vitamin C
Answer:
A. vitamin B
Explanation:
a power transmission line is made of copper that is 1.80 cm in diameter. the resistivity of copper is 1.73×10−8 ω·m. what is the resistance of 1.50 mi of the line?
The resistance of the power transmission line which is made up of copper whose length is 1.50 miles is 0.1644Ω
Given:
Diameter of the copper wire (d)=1.80cm
Copper wire resistivity (ρ)=1.73×10⁻⁸Ωm
The radius of the copper wire (r)= 0.90cm = 0.90×10⁻²meters
Length(L) = 1.50 mile = 2414.02meters
The cross-sectional area of the copper wire(A) = πr²
A = 3.14 × 0.81 × 10⁻⁴
A = 25.434 × 10⁻⁵m²
Calculating resistance
R= ρL/A
on putting the values
R= 1.73×10⁻⁸×2414.02/25.434×10⁻⁵
R= 0.1644Ω
The resistance of the 1.50-mile line is 0.1644Ω
To learn more about the resistance:
https://brainly.com/question/30712325
#SPJ12
at what angle to the horizontal should an ideal projectile be launched so that its horizontal displacement (the range) is equal to its maximum vertical displacement?
To achieve equal maximum horizontal and vertical displacement, an ideal projectile should be launched at an angle of 45° to the horizontal.
This is because the horizontal and vertical components of the projectile's velocity will be equal in magnitude, resulting in equal maximum displacements in both directions.
The equal-displacement theorem states that when an object is launched at an angle of 45° to the horizontal, this object will travel the same horizontal distance as the vertical distance it travels. This means that the trajectory of the object will be symmetrical and the maximum displacement in the horizontal direction will be equal to the maximum displacement in the vertical direction.
Learn more about displacement of a projectile:
https://brainly.com/question/24004804
#SPJ4
Distortion at the highest levels of magnification is decreased by
Select one:
a. using a lens with a smaller numerical aperture.
b. the use of immersion oil.
c. using a longer wavelength of light.
d. using a lower-power objective lens.
Distortion at the highest levels of magnification is decreased by (b). the use of immersion oil is correct option.
The fact that magnification does not appear as a variable in any of these equations is significant because specimen resolution is solely determined by numerical aperture and illumination light wavelength. The wavelength of light plays a significant role in the resolution of a microscope, as we have already explained (and can be seen in the calculations).
Therefore, it is preferable to utilize lower magnification objectives with a modest numerical aperture in specimens where resolution is less important and magnifications can be reduced in order to produce images with a greater working distance and greater depth of field.
To know more about magnification
https://brainly.com/question/1603534
#SPJ4
icon review. a small object of mass carries a charge and is suspended by a thread between the vertical plates of a parallel-plate capacitor. the plate separation is . if the thread makes an angle with the vertical, what is the potential difference between the plates?
The potential difference between the plates of a parallel-plate capacitor is determined by the plate separation, the charge of the object, and the angle of the thread. In this case, the potential difference (V) can be calculated as follows:
V = (Q * g* cosθ) / (2 * εo * d)
Where Q is the charge of the object, g is the acceleration due to gravity, θ is the angle of the thread, εo is the permittivity of free space, and d is the plate separation.
The electric field between the plates of a parallel-plate capacitor is determined by the potential difference between the two plates. This electric field (E) is calculated using the formula:
E = V/d
Where V is the potential difference between the two plates and d is the plate separation.
The capacitance of a parallel-plate capacitor is determined by the plate separation, the permittivity of free space, and the area of the plates. The capacitance (C) is calculated using the formula:
C = εo * A/d
Where εo is the permittivity of free space, A is the area of the plates, and d is the plate separation.
Learn more about the plates of a parallel-plate capacitor:
https://brainly.com/question/26871451
#SPJ4
A 21.1 kg person climbs up a uniform ladder with negligible mass. The upper end of the ladder rests on a frictionless wall. The bottom of the ladder rests on a floor with a rough surface where the coefficient of static friction is 0.14 . The angle between the horizontal and the ladder is θ . The person wants to climb up the ladder a distance of 0.88 m along the ladder from the ladder’s foot. What is the minimum angle θmin (between the horizontal and the ladder) so that the person can reach a distance of 0.88 m without having the ladder slip? The acceleration of gravity is 9.8 m/s 2 . Answer in units of ◦
The minimum angle so that the person can reach a distance of 0.88 m without having the ladder slip is 8⁰.
What is the weight of the person?The weight of the person is calculated by applying the following formula.
W = mg
where;
m is the mass of the persong is acceleration due to gravityW = ( 21.1 kg x 9.8 m/s² )
W = 206.78 N
The force of friction is calculated as;
Ff = μW
where;
μ is coefficient of frictionFf = 0.14 x 206.78
Ff = 28.95 N
If the person must not fall, the clockwise moment must be equal to anticlockwise moment.
28.95 x 0.88 x cosθ = 206.78 x 0.88 x sinθ
28.95 x cosθ = 206.78 x sinθ
28.95 / 206.78 = sinθ / coθ
28.95 / 206.78 = tanθ
θ = arc tan ( 28.95 / 206.78 )
θ = 8⁰
Learn more about minimum angle here: https://brainly.com/question/17847095
#SPJ1
what is the spontaneous direction of change? 1. toward product formation 2. in equilibrium 3. unable to determine 4. toward reactant formation
The spontaneous direction of change in equilibrium. This indicates that, in the absence of any external influence, a reaction will proceed in the direction that leads to the formation of products rather than reactants.
The natural flow of change is toward product formation. The reaction will continue until it achieves a condition of chemical equilibrium when the rate of product formation equals the rate of reactant formation. The spontaneous direction of change is balanced in both directions at chemical equilibrium, which means that the rate of the forward reaction equals the rate of the reverse reaction. The concentrations of reactants and products remain constant, and the system undergoes no net change. In other words, the system is in a condition of dynamic balance, with forward and reverse responses occurring at equal rates all the time.
To know more about the equilibrium, click here: brainly.com/question/28527601
#SPJ4
What is the evidence for dark intergalactic clouds between us and quasars? The emission lines in quas spectra are very broad. We observe the21 cmhydrogen spectral line in quasars. Quasar spectra show absorption lines of gas at various redshifts.X-rays from quasars change periodically as they pass through rotating intergalactic clouds
Dark intergalactic clouds are regions of the universe where there is a high concentration of neutral hydrogen, which absorbs light from distant sources, such as quasars.
This leads to a phenomenon known as Lyman-alpha absorption, in which the hydrogen clouds cause a reduction in the intensity of light from the quasars at specific, well-defined wavelengths in the ultraviolet part of the spectrum. This reduction in intensity is characterized by absorption lines, which appear as dark lines in the spectrum of the quasar. One of the main pieces of evidence for the existence of dark intergalactic clouds comes from studies of quasar spectra. By analyzing the spectra of distant quasars, astronomers have been able to detect a large number of absorption lines, which they attribute to neutral hydrogen in the intergalactic medium. The properties of these lines, such as their width, depth, and spacing, provide information about the physical conditions in the absorbing clouds, such as temperature, density, and chemical composition. Another piece of evidence comes from observations of the cosmic microwave background radiation, which is the afterglow of the Big Bang. The CMB provides a snapshot of the universe when it was just 380,000 years old, and the neutral hydrogen in the intergalactic clouds would have left a imprint on the CMB by scattering photons in the early universe. By looking at the CMB, astronomers have been able to confirm the presence of large regions of neutral hydrogen in the intergalactic medium, which are consistent with the existence of dark intergalactic clouds. Overall, the evidence for dark intergalactic clouds comes from the combination of these observations, which all point towards the presence of large, dense clouds of neutral hydrogen that are distributed throughout the universe. These clouds play a crucial role in the evolution of the universe, as they provide the raw material for the formation of stars and galaxies.
To know more about quasars please refer: https://brainly.com/question/30124138
#SPJ4
tires are rotating at a rate of 24 revolutions per minute. find the angular speed of the tires in radians per minute
The angular speed in radian per minute is 48π rad/min. The result is obtained by multiplying the angular speed by the value of revolution in radian.
What is angular speed?An angular speed is a speed of an object in rotational motion. It can be expressed as
ω = Δθ/t
Where
ω = angular speedΔθ = change in anglet = timeThe angular speed in relation to linear speed is
ω = vr
Where
v = linear velocityr = radius of a circleTires are rotating at a rate of 24 revs/min.
Find the angular speed in rad/min!
One revolution means it reach 360 degrees of a circle. It means that
1 rev = 2π
So, the angular speed in rad/min is
ω = 24 revs/min
ω = 24 × 2π rad/min
ω = 48π rad/min
Hence, the angular speed in radian per minute is 48π rad/min.
Learn more about angular speed here:
brainly.com/question/4721004
#SPJ4
What does it mean if the gravitational potential energy of an Earth-apple system is 10J?10J? (a) Someone did 10J10J of work lifting the apple. (b) Earth did negative work when someone was lifting the apple. (c) A 100−�100−g apple is 10m10m above the ground. (d) Parts (a) and (c) are both correct. (e) We need more information about the coordinate system and the object.
The gravitational potential energy of an Earth-apple system is 10 J, a) it means someone did the 10 J of work in lifting the apple and c) A 100 gm apple is 10 m above the ground.
Gravitational potential energy is the energy possessed by an object due to its position relative to the ground surface. It is formulated as:
P = mgh
Where m is the mass of the object, g is the acceleration due to gravity of Earth, and h is the height of the object above ground level. So if someone lifts the apple of 100 gm mass, up to 10 m, then the work done by the person will be the equal to the potential energy of the apple at 10 m height.
m = 100 gm = 0.1 kg
g = 10 m/s²
h = 10 m
P = 0.1 × 10 × 10
P = 10 j
Hence the option (d) is correct.
To know more about potential energy, here
https://brainly.com/question/24284560
#SPJ4
Which one of the following statements explains why it is difficult to measure the coefficient of volume expansion for a liquid? A Liquids are more compact than solids B. Liquids are more compact than gases. C Liquids tend to expand more slowly than solids. D The liquid will lose heat to the containing vessel. E The volume of the containing vessel will also increase.
The statement that explains why it is difficult to measure the coefficient of volume expansion for a liquid is 'The volume of the containing vessel will also increase.' The correct option is E.
The increase in volume per unit of original volume per degree of temperature is known as the coefficient of volume expansion of the bulk solid substance. Its SI unit is Kelvin⁻¹ or °C⁻¹.
Coefficient of real expansion of the liquid is defined as the ratio of real change in the volume to its original volume per 1 °C rise in temperature.
As the volume of the containing vessel will also increases, it is difficult to measure the coefficient of volume expansion for a liquid.
To know more about volume expansion:
https://brainly.com/question/30242448
#SPJ4
you are approaching a cyclist riding near the right edge of the lane on a two-lane country road. at the same time, you notice a large truck approaching from the distance in the oncoming lane. you accelerate to pass the cyclist using the oncoming lane and then move to the lane-right position before meeting the oncoming truck. what is this an example of?
According to the problem this is an example of wrong-way passing.
What is wrong-way passing?Wrong-way passing is when a driver passes another vehicle on the wrong side of the road. This is an incredibly dangerous and illegal maneuver, as it can lead to head-on collisions. Wrong-way passing often occurs when the driver is unfamiliar with the area, or is distracted by something else. It can also happen when the driver is under the influence of alcohol or drugs, or is in a rush to get to their destination. Drivers should always obey the rules of the road, and be aware of their surroundings to avoid this dangerous behavior.
Wrong-way passing is a dangerous maneuver in which a vehicle drives on the wrong side of the road to pass a slower vehicle. It is illegal in most countries, and carries a high risk of collision with oncoming traffic.
To learn more about acceleration
https://brainly.com/question/12550364
#SPJ4
how do researchers check the accuracy of molecular clocks?
Scientists use a molecular clock as a tool to calculate how long it will take two species to evolve independently based on the variations in their DNA. This method is used by researchers to determine the approximate number of genetic mutations that take place between two closely related species and the average genetic mutation rate to determine when the two species split in prehistory.
It utilises a Molecular Clock, a novel kind of clock. The molecular clock tracks the steady pace of change in an organism's genome (DNA or protein sequences of a particular gene) through time as opposed to seconds, minutes, and hours.
Animals, plants, fungi, and viruses are just a few of the many species of life that change at a consistent rate. Scientists can then construct phylogenetic trees portraying an ancient species that has developed or diverged from another by measuring these changes.
To know more about molecular clocks:
https://brainly.com/question/286720
#SPJ4
which of the arrows in the energy-level diagram represent absorption of energy and which represent emission of energy? items (6 items) (drag and drop into the appropriate area below)
The arrow pointing downwards ↓ represents emission of energy from higher excited state to lower excited state whereas the arrow pointing upwards ↑ represents the absorption of energy from lower excited state to higher excited state.
In a process known as absorption, an atom takes on energy from its surroundings to move from its ground state to its excited state. After taking in the energy, the electron ascends to a higher energy level.
Conservation of momentum can be applied here because the electron only takes in energy when it is exactly in line with its energy gap. Because photons and electrons have wavelengths that are nearly identical, you can say that electrons absorb energy.
When electrons regain their energy levels, they emit. When electrons absorb energy, they move to higher energy levels. By revealing the number of energy levels and the space between them, light absorption and emission reveal details about an atom's atomic structure.
To learn about energy
https://brainly.com/question/1932868
#SPJ4
a boy is using a rope to pull a sled to the left. what are the directions of the (a) tension force and the (b) friction force on the sled?
The direction of the tension force is to the right, while the friction force is downwards.
What is Force?A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
In conclusion, a force is not something that an object possesses or possesses. Another object applies a force to another. The concept of a force is not limited to living or non-living things.
Learn more about force here:
https://brainly.com/question/12785175
#SPJ1
a clock battery wears out after moving 10,700 c of charge through the clock at a rate of 0.490 ma. (a) how long (in s) did the clock run?
To calculate the amount of time the clock ran, we can use the formula
time = charge / current
where charge is measured in coulombs (C), current is measured in amperes (A), and time is measured in seconds (s).
Given that the clock moved 10,700 C of charge at a rate of 0.490 mA, we can plug these values into the formula
time = 10,700 C / (0.490 mA / 1000) A
We convert the current from mA to A by dividing by 1000, since 1 A = 1000 mA.
time = 10,700 C / 0.490 A = 21857.142857142857 s
So the clock ran for approximately 21857.14 seconds or around 6.1 hours.
Learn more about : clock battery
https://brainly.com/question/30189382
CAN SOMEBODY HELPPP MEEE WITH THISS!! i need help
The circuit is considered open up until the switch is thrown open. When the switch is closed, the circuit establishes a closed loop path.
What happens to current when a switch is closed?
A closed loop path is established in the circuit when the switch is closed. When the switch is closed, a current begins to flow if there is any source or charged capacitors within. In essence, that means that when you turn on a light, you're actually turning off the internal circuit to turn on the bulb.Since the capacitor is originally uncharged, the current is zero when the switch is closed, and the rate of change of current at that moment is V L.The initial condition employed is that the current is V R, an instantaneous change from zero current, assuming that the capacitor has no charge when the switch is closed.To learn more about circuit refer to:
https://brainly.com/question/2969220
#SPJ1
Which is the largest component of energy generated from renewable sources in the United States? A. Wind B. Biomass C. Hydroelectric D. Solar E. Nuclear.
The largest component of energy generated from renewable sources in the United States is hydroelectric power, accounting for about 6% of total energy generation. Option C is correct.
Wind energy is the second-largest source, accounting for about 5% of total energy generation. Biomass, solar, and nuclear energy are also significant contributors, but with lower proportions of total energy generation. Hydroelectric power is primarily generated by large dams, while wind energy is generated by wind turbines, biomass energy from organic materials, and solar energy from photovoltaic panels. Nuclear energy is not considered a renewable source as it relies on finite uranium fuel.
Renewable energy sources have become increasingly important in recent years as a means of reducing reliance on fossil fuels and mitigating the effects of climate change. In the United States, there are several types of renewable energy that are widely used, including wind, biomass, hydroelectric, solar, and nuclear. In this answer, we will determine which is the largest component of energy generated from renewable sources in the United States.
To learn more about renewable sources visit:
https://brainly.in/question/650633#
#SPJ11
a coil of copper wire has a resistance of 100 Ω when its temperature is 0°c. determine its resistance at 70°c if the temperature coefficient of resistance of copper at 0°c is 0.0043/°c.
The resistance of copper wire is 130.1Ω when it is at 70°c if the temperature coefficient of resistance of copper at 0°c is 0.0043/°c.
Given the resistance of copper wire (R1) = 100 Ω
The resistance is at a temperature of (T1) = 0°c.
The temperature change is (T2) = 70°c
The temperature coefficient of resistance of copper at 0°c is = 0.0043/°c.
The resistance at 70°c = R2
We know that Resistance at particular temperature is calculated as:
Rθ = R0(1+αθ)
R2 = 100(1 + 0.0043x70)
R2 = 130.1Ω
The resistance of resistor at 70°c is 130.1Ω
To learn more about resistance click here https://brainly.com/question/11431009
#SPJ4
as per fcp what is the minimum width of a corridor for apartments with a required capacity of more than 50 persons? a) 0.91 m. b) 1.00 m. c) 1.10 m.
According to the FCP, the minimum width of a corridor for apartments with a required capacity of more than 50 persons is 1.10 meters (c).
The minimum width of a corridor for apartments with a required capacity of more than 50 persons is specified by the Fire Code of the Philippines (FCP). The FCP sets the minimum requirements for fire safety in buildings and other structures, including the width of corridors.
According to the FCP, the minimum width of a corridor for apartments with a required capacity of more than 50 persons is 1.10 meters (c). This width is necessary to ensure that people can evacuate the building safely in case of a fire. A wider corridor allows for a greater number of people to move through it at the same time, reducing the risk of congestion and increasing the speed of evacuation.
In addition to the minimum width, the FCP also specifies other requirements for fire safety in apartments, such as the type and placement of fire alarms, the provision of fire escapes, and the installation of fire-resistant doors and walls.
It is important for builders and designers to follow these requirements to ensure the safety of residents in the event of a fire. Building owners and managers should also regularly inspect and maintain fire safety systems to ensure that they are functioning properly and to minimize the risk of fire.
Learn more about width here:
https://brainly.com/question/28300074
#SPJ4
A cruise ship can accelerate at 0.82m/s^2, if it starts at 2.0m/s how long does it take to reach a speed of 305 m/s ?
It would take 372 seconds to reach a speed of 305 m/s.
What is speed?The speed of any object is described as the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time.
Speed is thus a scalar quantity
We will use formula for acceleration to calculate or find the final velocity after a certain time t:
We have that v = v0 + at,
where vo is the initial velocity.
Finding in terms of t
t = (v - v0) / a = (305 - 2) / 0.82 = 372 seconds
Therefore, it would take 372 seconds to reach a speed of 305 m/s.
Learn more about acceleration at: https://brainly.com/question/460763
#SPJ1
find the amount of electrical energy expended raising the temperature of 45 liters of water by 75°c assume the efficiency of the heating equipment to be 90%?
The amount of electrical energy expended raising the temperature of 45 liters of water by 75°C with 90% efficiency is 16,100 J.
The amount of energy required to raise the temperature of 45 liters of water by 75°C can be calculated as follows:
First, we need to calculate the heat required to raise the temperature of the water. The heat required can be calculated using the formula:
Q = mcΔT
where Q is the heat, m is the mass of the water (in kilograms), c is the specific heat capacity of water (4.184 J/g°C), and ΔT is the change in temperature (75°C).
Since 1 liter of water weighs 1000 grams, the mass of 45 liters of water is 45 x 1000 = 45,000 grams or 45 kilograms. So,
Q = 45 x 4.184 x 75 = 14,490 J
Next, we need to take into account the efficiency of the heating equipment. If the efficiency is 90%, then only 90% of the energy input is used to heat the water, and the rest is lost as heat to the environment. So, the energy required to heat the water is:
E = Q / 0.9 = 14,490 / 0.9 = 16,100 J
Therefore, the amount of electrical energy expended raising the temperature of 45 liters of water by 75°C with 90% efficiency is 16,100 J.
To know more about electrical energy please refer: https://brainly.com/question/29032441
#SPJ4
what is fup , the magnitude of the force exerted upward on the bottom of the liquid?
FUP, the magnitude of the force exerted upward on the bottom of the liquid is equal to pressure times area.
In order to describe an object's maximal size and direction, we use magnitude. Scalar and vector quantities both use magnitude as a common link.
An object with mass can alter its velocity, or accelerate, as a result of a force. A force is the modification of an object's condition brought on by its surroundings. An object will be at stationary or moving as a result of forces. Think of a ball lying still on the ground as an illustration. You must exert considerable force on the ball in order to shift it in any way.
To learn more about force here
brainly.com/question/13191643
#SPJ4
when the silver was filtered from the solution, dried, and weighed, the mass was actually found to be 420g. explain why there might be this difference between the expected and actual values. [2 marks]
Loss of material during filtration, Incomplete drying, Impurities in the solution, Accuracy of measurements, and Instrumental error are some of the reasons due to difference between actual and expected values when silver is filtered.
Reasons for difference in values in filtration of silver:
Loss of material during filtration: Some of the silver might have remained stuck to the filter paper, or it might have been lost in the filtrate. This would result in a lower actual mass.Incomplete drying: If the silver was not completely dried before weighing, it might contain some water, which would add to its mass. This would result in a higher actual mass.Impurities in the solution: The solution might contain impurities that were not taken into account when calculating the expected mass of silver. These impurities would increase the actual mass.Accuracy of measurements: The expected mass of silver was calculated based on the volume and concentration of the silver solution, but any inaccuracies in these measurements would also affect the expected mass.Instrumental error: The scale used to weigh the silver might not have been calibrated correctly or might have had some other error, leading to an incorrect actual mass.Learn more about filtration here:
https://brainly.com/question/18874756
#SPJ4
what sentence comes before the following sentence, "tell me, then—is not that which is pious necessarily just
Then I must be better than Daedalus because I move other people's inventions as well, whereas he just made his own devices to move. The pious is what the gods admire, while the impious is what they despise.
Therefore, all pious deeds are pious in the sense that they are beloved by the gods. There is enough generalization. In fact, Euthyphro's defence of the first proposal contains an implicit reference to this generalization. The gods cherish the righteous. Acts are pious because the gods love them, according to Euthyphro, but the gods love them because they are pious. This amounts to arguing that acts are pious because they are pious, which is absolutely absurd.
To learn more about pious click here https://brainly.com/question/14782752
#SPJ4
complete question: Give the first sentence of the paragraph in which the following question occurs, "Tell me, then—Is not that which is pious necessarily just?
what wave pattern do you see in the case of a single aperture? what do you see in the case of a double aperture? how do these patterns compare to the data you took using dippers on the rippler bar?
In the case of a single aperture, we would see a wave pattern with a single peak.
This is because the light is only able to pass through one opening, creating a concentrated wavefront. In the case of a double aperture, we would see two peaks separated by a trough, because the light is passing through two openings. This creates two separate wavefronts that interfere with each other, resulting in a pattern of peaks and troughs.
When comparing these patterns to data taken using dippers on a ripple bar, it is important to consider the size and distance of the apertures as well as the wavelength of the light used, as these factors will influence the resulting wave pattern.
An aperture is an opening, such as a hole or slit, that allows light to pass through. It is a crucial element in many optical systems, such as cameras, microscopes, and telescopes. A single aperture is a single opening, such as a hole in a wall, that allows light to pass through. A double aperture is two openings that allow light to pass through. They are usually close together.
Learn more about aperture here: brainly.com/question/1771913
#SPJ4
Which of the following reports the relative strength of an ultrasound wave?
A. decibels
B. watts
C. W/cm^2
D. pascals
W/cm^2 reports the relative strength of an ultrasound wave so option c is correct.
An ultrasound wave is a type of sound wave that has a frequency higher than humans can hear. It is used in medical imaging and other applications. When measuring the strength of an ultrasound wave, it is important to understand which of the following reports the relative strength.
The answer is C. W/cm^2, which stands for watts per square centimeter. This unit of measure is used to report the relative strength of an ultrasound wave. It is calculated by dividing the total amount of power (measured in watts) by the area (measured in cm^2). This measure of relative strength is the most common way to compare different ultrasound waves, as it takes into account both the intensity of the wave and the area over which it is spread.
Decibels (A) measure sound intensity, but they are not the best way to measure the relative strength of an ultrasound wave. Watts (B) measure the total power of the wave, but do not take into account the area over which the wave is spread. Pascals (D) measure pressure, but they are not the best measure of relative strength for an ultrasound wave.
To learn more about ultrasound wave, visit:
https://brainly.com/question/14694921#
#SPJ11
