it is ok to evaporate all the liquid so that the conical vial is completely dry.
Answers
When the bubbling stops, what appears to be liquid is actually molten solid, which won't evaporate but could breakdown under extreme heat.
What liquid matter means?Particle are less closely packed in liquids than they are in solids. When maintained inside a container, liquids adopt that shape. Since there is a smaller room for movement among particles in liquid, compression is challenging. While liquids have a fixed volume, their shapes are not.
Why is water a liquid?The significant difference in polarity between oxygen and hydrogen causes the water molecules to be dipolar. As a result, a tight hydrogen bond forms between the H & O of nearby water molecules, which explains why the water molecules are packed closely together.
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Related Questions
A block of mass 4 kilograms is initially moving at 5m/s on a horizontal surface. There is friction between the block and the surface which causes the block to come to a complete stop. The coefficient of kinetic friction between the block and the surface is 0.5.
Calculate the distance the block slides while coming to a stop. Show all work.
Answers
• Net vertical force on the block:
∑ F = n - w = 0
(n = magnitude of normal force, w = weight)
n = w = m g
(m = mass, g = 9.8 m/s²)
n = (4 kg) (9.8 m/s²) = 39.2 N
• Net horizontal force:
∑ F = -f = m a
(f = mag. of friction, a = acceleration)
We have f = µ n = 0.5 (39.2 N) = 19.6 N, so
-19.6 N = (4 kg) a
a = -4.9 m/s²
With this acceleration, the block comes to a rest from an initial speed of 5 m/s, so that it travels a distance ∆x in this time such that
0² - (5 m/s)² = 2 (-4.9 m/s²) ∆x
∆x = (25 m²/s²) / (9.8 m/s²) ≈ 2.55 m ≈ 2.6 m
What phenomenon in hearing is analogous to spatial frequency channels in vision?
A. critical bands
B. tonal suppression
C. auditory adaptation
D. the volley principle
Answers
The phenomenon in hearing that is analogous to spatial frequency channels in vision is critical bands. Hence, the correct option is A: Critical bands.
Critical bands are regions of the audible frequency range in which a complex sound is divided into individual, discrete frequency bands by the human auditory system.
For instance, when different frequencies in a complex sound, such as a musical instrument or a human voice, are picked up by the ear, they are sent to the brain via various channels that respond to specific frequencies.
These channels are referred to as critical bands. The frequency range of these bands varies depending on the loudness of the sound.
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Does the speedometer of a car measure average speed or instantaneous speed? Explain.
Answers
The speedometer of a car measures instantaneous speed. It tells you the speed of the car at any given moment in time.
The speedometer of a car measures instantaneous speed. This means it gives the reading of the speed at any given moment in time.
Main part: The speedometer of a car measures instantaneous speed. It tells you how fast you are driving at that particular moment. The speedometer gives you a direct reading of how fast your vehicle is traveling. It measures the vehicle's speed at any given moment in time, rather than calculating the average speed of the entire journey.
A speedometer is attached to a vehicle's wheels to measure its speed. As the wheels turn, the speedometer calculates the speed at which they are turning. Inside the speedometer, there is a component called a speedometer cable. This component is connected to the back of the speedometer's drive mechanism. The other end of the cable is connected to a gear that is inside the transmission or the transfer case. When the vehicle is moving, the driveshaft turns the gears in the transmission or transfer case. The gear connected to the speedometer cable also turns, causing the cable to rotate. The rotation of the cable creates a magnetic field that drives the speedometer's magnetometer, which is connected to the speedometer pointer. This causes the pointer to move along the dial and show the speed of the vehicle on the speedometer.
Conclusion: In conclusion, the speedometer of a car measures instantaneous speed. It tells you the speed of the car at any given moment in time.
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An astronaut drops a 1.0 kg object and a 5.0 kg object on the Moon. Both objects fall a total distance of 2.0 m vertically. Which of the following bost describes the objects after they have fallen a distance of 1.0 m2
They have each gained one-half of their maximum kinetic energy
They have cach lost the same amount of potential energy
They have each gained the same amount of potential energy
They have each lost kinetic energy
Answers
Answer:
Chupapi munyaño hoyaaaa
1. Define friction, and explain why it occurs.
Answers
Answer:
The simplest way to put it is that friction is a force in which there is a resistance between material elements when they slide against each other. There is no completely accurate answer as to why friction occurs, but scientists believe that it is because of tiny bumps on the surface of a material.
Urgent please!!!!!!!!!!!!!!!!!!!!!!
A program can only create one object of each class.
A. True
B. False
Answers
9. An astronaut weighs 500 Newtons on Earth and 25
newtons on asteroid X. The acceleration due to
gravity on asteroid X is approximately
A) 1 m/s²
C) 0.2 m/s²
B) 2 m/s²
D) 0.5 m/s²
Answers
The acceleration due to gravity on asteroid X is approximately 0.5 meter/secon^2. Hence, option (D) is correct.
What is acceleration due to gravity?The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity. M/s^2 is its SI unit. Its vector nature—which includes both magnitude and direction—makes it a quantity. The letter g stands for gravitational acceleration.
Given that: An astronaut weighs 500 Newtons on Earth and 25 newtons on asteroid X.
Hence, The acceleration due to gravity on asteroid X is :
= acceleration due to gravity on Earth × (25 N/500N)
= 10 meter/secon^2 × (1/20)
= 0.5 meter/secon^2 ( approx.)
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Is the moon's gravity 1/6 of earth's gravity?
Answers
Yes , the moon's gravity 1/6 of earth's gravity is the correct statement.
The moon has a gravity that is 1/6 that of Earth. So you could deduct 83.5% if you stepped on a scale on the moon. For instance, that indicates that 100 kg would weigh 16.5 kg on the moon.On the surface of the Moon, the acceleration caused by gravity is around 1.625 m/s², which is 16.6% greater than on the surface of the Earth (0.166 ).
The variation in gravitational acceleration is roughly 0.0253 m/s² (1.6% of the acceleration caused by gravity) over the entire surface. Things on the Moon will only weigh 16.6% (or 1/6 of what they weigh on the Earth) of what they do on the Earth since weight is directly correlated with gravitational acceleration.
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Under the current law on nutrition labeling, the Nutrition Facts
panel must include
a. total calories from trans fat
b. grams of monounsaturated fat
c. grams of total fat
d. total calories from satura
Answers
The Nutrition Facts panel must include the grams of monounsaturated fat, grams of total fat, and total calories from saturated fat.
a. The total calories from trans fat are not required to be included in the Nutrition Facts panel. Trans fat is listed separately under "Total Fat" and does not have its own specific calorie value.
b. The grams of monounsaturated fat are required to be included in the Nutrition Facts panel. Monounsaturated fat is a type of fat that is beneficial for health, and its quantity is provided to help consumers make informed choices.
c. The grams of total fat are required to be included in the Nutrition Facts panel. Total fat represents the sum of all types of fats present in the food product.
d. The total calories from saturated fat are required to be included in the Nutrition Facts panel. Saturated fat is a type of fat that is associated with an increased risk of certain health conditions, and providing the calorie value helps consumers monitor their intake.
Therefore, the Nutrition Facts panel must include b. grams of monounsaturated fat, c. grams of total fat, and d. total calories from saturated fat.
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3. an object is 4.5 cm from a concave lens, with its base on the principal axis. the focal point of the lens is3 cm. a. show the location of the image relative to the lens using a ray diagram. is the image real or virtual, inverted or upright, and larger or smaller than the object?
Answers
1.8cm will be the location of the image relative to the lens. Image will be real, upright, and smaller than the object
Define lens
A lens is a transmissive optical tool that employs refraction to focus or disperse a light beam. A compound lens is made up of numerous simple lenses that are often aligned along a common axis, as opposed to a simple lens, which is made up of a single transparent piece.
A concave lens is one that bends a straight light beam away from the source and focuses it into a distorted, upright virtual image. Both actual and virtual images can be created using it. At least one internal surface of concave lenses is curved.
u ⇒ 4.5cm
f ⇒ 3cm
v ⇒?
1/v ⇒ 1/f + 1/u
1/v ⇒ 1/3 +1/4.5
v ⇒3*4.5(3+4.5)
v ⇒1.8cm
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The capacitance of a parallel plate capacitor is _________.
Group of answer choices
proportional to charge
proportional to the plate separation
proportional to the area of the plates
proportional to the potential difference
None of the above
Answers
The capacitance of a parallel plate capacitor is proportional to the area of the plates. Hence option C is correct.
A capacitor is a device that stores electrical energy in an electric field by collecting electric charges on two isolated surfaces. It is a passive electronic component with two terminals.
Capacitance is the effect of a capacitor. While any two electrical conductors in close proximity in a circuit have some capacitance, a capacitor is a component designed to provide capacitance to a circuit. The capacitor was initially referred to as a condenser, a word that is still used in a few compound names, such as the condenser microphone.
Capacitance of the capacitor is directly proprtional to the area of the plates and inversly proprtional to the distance between them.
C = ∈A/d
Hence option C is correct.
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What is the phase of water when its temperature is 150 °C?
Answers
Depending on how much energy is in the system, there will be different amounts of liquid and gas at equilibrium. If just enough energy was added to raise the temperature of the liquid to 150°C, there will just be liquid. If more was added, there will be some liquid and some gas.
Why concave lens is called diverging lens
Answers
When a parallel beam of light passes through a convex lens, the rays become farther from one another when the come out. This process of rays is called ''to diverge''. The concave lens makes rays of light diverge, so it is called diverging lens.
What does it mean when someone says that radio waves can be modulated?
Answers
The boat's 'echo sounder' could not be used in an aeroplane to measure its heigh
above the ground unless it had been modified.
Answers
True, this is because the echo sounder that is applicable to boats cannot be used directly for airplanes
How does an echo sounder work?By sending out sound waves and timing how long it takes for them to bounce back, an echo sounder, sometimes referred to as a sonar, is a device frequently used in boats to gauge the depth of the water beneath the craft.
When a sound pulse from an echo sounder strikes a solid item in the water, such as fish, vegetation, or other objects, the signal is reflected back to the surface.
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Which of the following is true regarding the Standard Normal Curve, Z ? a) The standard deviation of Z is o=0 b) The mean is u=1 c) Z is symmetric about zero
Answers
The standard normal curve, Z, is a bell-shaped distribution with a mean of 0 and a standard deviation of 1.
Therefore, statement a) is false as the standard deviation of Z is o=1, not 0. Statement b) is also false as the mean of Z is u=0, not 1. Statement c) is true as the Z curve is symmetric about zero, meaning that the area to the left of zero is equal to the area to the right of zero. This symmetry is a result of the mean being at zero and the standard deviation being equal in both directions.
standard normal curve, Z, is a fundamental concept in statistics and is used in a variety of applications, including hypothesis testing, confidence intervals, and determining probabilities. Understanding the properties of the standard normal curve is essential for conducting statistical analysis and drawing valid conclusions from data.
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A wave has a wavelength of 3 m and a frequency of 340 Hz. How far will the wave go in 20 s?
Answers
Velocity=wavelength X frequency
= 3X340
= 1020m/s
Velocity/speed=distance ×time
Distance =velocity/time
=1020/20
=51m
Explanation:
How much work is done when a car is pushed 8 m with 160 N of force?
Answers
Answer: 1280 J
Explanation: Work is calculated by multiplying the displacement (8m) by the force (160 N) which will give you 1280 J (joule)
A resistor has a resistance of 120 12. How much current is in the resistor if there is a potential difference of 12.0V across the resistor?
A. 160 A
B. 0.43 A
C. 0.10 A
D. 2.3 A
Answers
Answer:
c 0.10
Explanation:
V=IR
12.0V=I x 120.12ohms
I=0.099
I= 0.10
The 70 kg student in figure p14. 43 balances a 1200 kg elephant on a hydraulic lift. What is the diameter of the piston the student is standing on?.
Answers
The piston the student is standing on has a 0.22-times larger diameter than the piston the elephant stands on.
What is mechanical advantage of a hydraulic lift?Pascal's law is shown via the hydraulic system.In doing so, we are able to use a modest force on the small piston to generate a bigger force on the huge piston.At each piston, the ratio between the force and the area must be the same.The three practical tools that make use of Pascal's law are hydraulic presses, hydraulic lifts, and hydraulic brakes.Given parameters:
Mass of the student: m = 70 kg.
Mass of the elephant: M = 1200 kg.
Let the diameters of the piston the student is standing on and the piston the elephant is standing on are respectively d and D.
Using Pascal's law , we can write,
Force applied by the student's weight ÷ area of the piston the student is standing on = Force applied by the elephant's weight ÷ area of the piston the elephant is standing on.
⇒ 70 kg × g / π d² = 1200 kg × g / π D²
⇒ 1400 d² = 70 D²
⇒ d= 0.22D.
Hence, The piston the student is standing on has a diameter that is 0.22 times larger than the piston the elephant is standing on.
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You strike two tuning forks in our classroom. Tuning fork 1 is quieter and has a lower pitch than tuning fork 2. Fill in the blanks with “greater than”, “less than”, or “equal to”.
Wave speed for tuning fork 1 is ___ the wave speed for tuning fork 2.
Amplitude for tuning fork 1 is ___ the amplitude for tuning fork 2.
Answers
The wave speed for tuning fork 1 is equal to the wave speed for tuning fork 2.
The amplitude for tuning fork 1 is less than the amplitude for tuning fork 2.
What is wave speed?Wave speed is the distance the wave travels in a given amount of time, such as the number of meters it travels per second.
The amplitude of a wave is the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position.
Based on the given illustration we can conclude that;
The wave speed for tuning fork 1 is equal to the wave speed for tuning fork 2.
The amplitude for tuning fork 1 is less than the amplitude for tuning fork 2
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a student in your class says "electromagnetic waves can travel through outer space but mechanical waves can’t.” is it this student right or wrong? why?
Answers
Answer:
Right
Explanation:
electromagnetic waves can travel through space (a vacuum) because it doesn't need a medium and its particles to propagate whereas a mechanical wave needs a medium to propagate. For example sound is a mechanical wave, sound vibrates off a mediums particles to propagate and for sound to be heard and travel
Watch as the coefficients are being
placed in the equation. Is the
equation being balanced correctly?
P4010 + H2O +4H3PO4
Before
After
4
1(4) = 4
ao I
10+1
4(4) = 16
H
2
3(4) = 12.
Yes
No
Answers
What wave property is described as the number of waves produced by a source each second.
Answers
Answer:
Frequency
Explanation:
The Frequency of a wave is the number of waves produced by a source each second
assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is va, the speed of the wind with respect to the ground?
Answers
The speed of the wind with respect to the ground is 175 miles per hour.
To find the speed of the wind with respect to the ground (va), we can use the formula for the ground speed of an airplane:
vg = vp + va
where vg is the ground speed of the airplane, vp is the speed of the airplane with respect to the air, and va is the speed of the wind with respect to the ground.
We can rearrange this formula to solve for va:
va = vg - vp
We are given the values for vp and vg (which can be calculated using the formula vg = d/twe):
vp = 400 miles/hr
vg = 2300 miles / 4 hours = 575 miles/hr
Now we can plug in these values and solve for va:
va = 575 miles/hr - 400 miles/hrva = 175 miles/hr
Therefore, the wind has a speed of 175 miles/hr with respect to the ground.
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A force of 75 N is exerted on a 45 kg couch, and the couch moved 5 m.
How much work is done in moving the couch?*
O 1.67 J
O 200 J
O 375 J
3,375J
Answers
Explanation:
i think it is 375 J
w=f.dscos.theta
angle is 0 degree bw the force(75N) and displacemnet(5m) .
.A box is pushed across a rough horizontal floor by a force acting parallel to the floor in the direction of motion. A force doing negative work on the body is _____.(a) gravity(b) the applied force(c) friction(d) the normal reaction force of the floor upward on the body(e) a fictitious force.
Answers
A box is pushed across a rough horizontal floor by a force acting parallel to the floor in the direction of motion. A force doing negative work on the box pushed across a rough horizontal floor is friction.
So, the correct answer is C.
As the box is moved by an applied force parallel to the floor, friction opposes the motion, acting in the opposite direction.
This opposition causes the frictional force to do negative work, as it resists the movement and reduces the box's kinetic energy.
Meanwhile, (a) gravity and (d) the normal reaction force act perpendicular to the motion, resulting in no work being done by these forces. (b) The applied force does positive work, contributing to the box's motion. (e) A fictitious force is not applicable in this scenario.
Hence, the answer of the question is C
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2. (05.01 LC)
Which statement is true about the speed of light? (2 points)
A: Light travels relatively slowly.
B: Distance in space is measured using the speed of light.
C: Time in space is measured using the speed of light.
D: The speed of light is unknown.
Answers
Answer:
The speed of light is used for the measurement of the time in space
A body is acted upon by a constant force directed towards a fixed point. the magnitude of the force varies inversely as the square of the distance from the fixed point. what is the nature of the path?
a) straight line
b)circle
c)random motion
Answers
Answer:
Circle
Explanation:
Actually its Eclipse or ecliptial path.
Force varies inversely with square of distance.
Remember Gravitation?
F=GMm/r²Yes
F is inversely proportional to r²
So it's eclipse
Recheck if a option given or circle is most likely correct
With the aid of diagram(s), explain the configuration of a tensile force measurement using strain gauge (without bridge). Derive the relationship between the change in resistance and the tensile force, P. With the derived relationship, determine the change in resistance for a strain gauge that is installed on a beam that is being pulled axially by a 50 kN tensile force. Given that for the strain gauge, F = 2, R = 1200, and for the beam, E = 200 10 kNm 2, width = 5cm and thickness = 1cm.
Answers
In a tensile force measurement using a strain gauge, the strain gauge is typically attached to the surface of the material experiencing the tensile force. The strain gauge is a resistive sensor that changes its electrical resistance in response to the deformation or strain of the material.
When a tensile force is applied to the material, it causes the material to deform. This deformation results in a change in the length and cross-sectional area of the material. The strain gauge, being bonded to the surface of the material, also experiences this deformation, which causes a change in its resistance.
The relationship between the change in resistance (∆R) and the tensile force (P) can be derived using the concept of strain and the gauge factor (GF) of the strain gauge. The gauge factor is a constant that represents the sensitivity of the strain gauge and is typically provided by the manufacturer.
The relationship is given by the equation:
∆R = GF * R * ε
Where:
∆R is the change in resistance of the strain gauge,
GF is the gauge factor of the strain gauge,
R is the initial resistance of the strain gauge,
ε is the strain experienced by the material.
To determine the change in resistance for a strain gauge installed on a beam being pulled axially by a 50 kN tensile force, additional information is required. Specifically, the length of the beam and the modulus of elasticity (E) of the material. With this information, the strain (ε) can be calculated using the equation
ε = δL / L
Where:
δL is the change in length of the beam,
L is the initial length of the beam.
Once the strain is determined, the change in resistance can be calculated using the derived relationship ∆R = GF * R * ε, where GF and R are given as 2 and 1200, respectively.
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