Which of the following types of solutes generally dissolve well in water? Select all that apply.
nonpolar molecules
polar molecules
ionic solids
hydrocarbons
oils
Answers
Related Questions
1) A blinking light of constant period is situated on a lab cart. Which diagram best represents a photograph of
the light as the cart moves with constant velocity?
How do I solve this?
Answers
Option C with uniform displacement at each time interval represents the photograph of light as the cart moves with constant velocity.
At constant velocity, the change in displacement with time is uniform. The displacement of the given object in motion increases at equal rate.
At constant velocity, the initial velocity is equal to the final velocity.
v₁ = v₂
The acceleration of the object at constant velocity is zero, because the change in velocity with time will be zero.
\(a = \frac{\Delta v}{\Delta t} \\\\a = \frac{v_2- v_1}{t} \\\\v_2 = v_1\\\\a = \frac{v_1 - v_1}{t} \\\\a = 0\)
Thus, from the given options we can conclude that option C with uniform displacement at each time interval represents the photograph of light as the cart moves with constant velocity.
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A helicopter flies with a ground speed of 250 km/h If the wind speed is 17 km/h southeast, what is the air speed?
Answers
The air speed of the helicopter has the ground speed of 250 km/h is 233 km/h
The ground speed of the helicopter = 250 km/h
The wind speed of the helicopter = 17 km/h
The air speed of the helicopter can be found using the formula,
G = W + A
where G is the ground speed of the helicopter
W is the wind speed of the helicopter
A is the air speed of the helicopter
Let us rearrange the equation in order to get the airspeed,
A = G - W
Let us substitute the known values in the above equation, we get
A = 250 - 17
= 233 km/h
Therefore, the air speed of the air speed is 233 km/h
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if the frequency of revolution (the number of revolutions per unit time) of the lighter particle is f , what is the frequency of revolution of the more massive particle?
Answers
concept employed
The quantity of complete waveforms produced per second is the frequency (f) of a wave. This is the same as the number of oscillations or cycles per second.
The duration of a waveform, or the duration of an oscillation, is measured in seconds (T). It is obvious that frequency and duration are inverses.
We know that = 1/T 2/1
= T1/T2
= (1/10T)1 0
= 1/ 10 means that the frequency is 1/ 10.
Describe oscillation.Oscillation is the process by which any quantity or measure fluctuates repeatedly about its equilibrium value over time. Another definition of oscillation is a periodic variation in a substance's value between two values or around its core value.
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A collision cart runs off the edge of a lab table that is 0.95 meters high and lands 0.40 meters from the base of the table. Calculate the speed of the collision cart when it leaves the table. Let g =10m/s²
Answers
Answer/Explanation:
given values we can generate the equations:
x = vx*t
y = 0.95 - 1/2*g*t^2
where x refers to displacement in horizontal direction, y refers to displacement in vertical direction, and t is time, while vx is velocity of the cart in the x direction, and g is the acceleration due to gravity = 9.8 m/s^2
At it's landing point we have x = 0.4, y = 0:
0.4 = vx*t
0 = 0.95 - 1/2*9.8*t^2
Therefore combining the equations and solving:
t = 0.44 s s
vx = 0.91 m/s
why does deceleration lower force during a collision?
Answers
Are these statements about the Fluid mechanics true?
Statement 1: Fluid mechanics is a branch in chemistry that involves study of fluids.
Statement 2: Fluid mechanics can be divided into 2 major categories.
a) True, False
b) True, True
c) False, True
d) False, False
Answers
Announcement 1: Fluid mechanics is a branch of chemistry that involves having a look at fluids: c) False, True
Fluid mechanics is the branch of physics concerned with the mechanics of fluids and the forces on them. It has programs in an extensive variety of disciplines, such as mechanical, aerospace, civil, chemical, and biomedical engineering, geophysics, oceanography, meteorology, astrophysics, and biology. Fluid mechanics is the look at of the forces of the fluid and the way fluids flow. Fluid mechanics may be divided into parts: fluid statics and fluid dynamics. Fluid statics is the observation of fluids at rest, and fluid dynamics is the study of fluids in motion.
Fluid mechanics is the look at fluid behavior (beverages, gases, blood, and plasmas) at relaxation and in movement. Fluid mechanics has a huge variety of packages in mechanical and chemical engineering, organic structures, and in astrophysics.
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For the past few days, the weather in Miami has been cool. When the temperature did warm up, the meteorologists noticed that it was also very windy. How could winds influence the temperature?
A. Winds carry energy in the form of heat around Earth.
B. Winds are caused by the energy of the sun.
C. Winds move because of differential heating.
D. Winds transfer energy in the form of heat from the air to the ground.
Answers
A meteorite enters the Earth's atmosphere and burns up before reaching the Earth itself. The meteorites' kinetic energy stores are transferred to the surroundings as heat, sound and what else?
Answers
The meteorites' kinetic energy stores are transferred to the surroundings as heat, sound and light energy.
A meteorite possesses kinetic and potential energy before it enters the Earth's atmosphere. Frictional heating happens when it enters and descends towards the Earth's surface because of collisions with atmospheric molecules, which slows its velocity. As a result, the kinetic energy drops and is changed to heat energy. As potential energy is transformed into kinetic energy, it constantly decreases. Ablation also results in mass loss.
Friction starts to work on the meteorite as it enters the earth's atmosphere. A meteorite will have kinetic energy when it enters the earth's atmosphere. The meteorite catches fire as a result of friction. At this time, the meteorite's kinetic energy will be transformed into heat, sound, and light energy.
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When building a device or structure, engineers must carefully consider how the materials they choose will change when heated or cooled. List four situations where thermal expansion and contraction could be a problem.
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There are three infrastructure projects wherein thermal expansion & contraction may be a problem are constructing roads, towers, and sidewalks.
What does thermal expansion mean?The propensity of matter to alter structure, volume, or area in reaction to a temperature change is known as thermal expansion. The average molecular energy of a substance has a monotonic relationship with temperature. Heat makes molecules move more quickly & take up more space, which causes thermal expansion.
What is a good illustration of thermal expansion?The expansion of heated air is the most obvious example. Heat helps the air expand, making it lighter than the air around it. This causes the hot air to be forced (upward), which causes steam and smoke to rise, warm air balloons to float, and so on.
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A farmer pushes a 50 kg wheel barrow from rest to a speed of 5.0 m/s through a distance of 8.0 m. There is no friction acting between the ground and the wheel barrow, and the farmer is pushing the wheel barrow in the same direction it moves, the work done by the farmer on the wheel barrow is ___ J.
2. A 1400 kg roller coaster begins at a speed of 7.0 m/s and a height of 30 m above the ground. It rolls down the track to ground level. When the roller coaster is one-third of the way down the track (20 m above the ground), it is travelling at _____ m/s.
3. In order to slow a 76.0 kg rider (and bike) from 13.0 m/s to 4.00 m/s, what amount of work must be done?
Answers
1. The work done by the farmer on the wheelbarrow is 625 J.
2. When the roller coaster is one-third of the way down the track (20 m above the ground), it is traveling at approximately 32.67 m/s.
3. The amount of work done to slow the rider (and bike) from 13.0 m/s to 4.00 m/s is approximately -12168 J.
1. The work done by the farmer on the wheelbarrow can be calculated using the work-energy principle, which states that the work done on an object is equal to the change in its kinetic energy. The formula for work is given by:
Work = ΔKE = KE_final - KE_initial
The initial kinetic energy (KE_initial) is zero since the wheelbarrow starts from rest. The final kinetic energy (KE_final) can be calculated using the formula:
KE_final = (1/2) * m * v^2
Where m is the mass of the wheelbarrow and v is its final velocity. Substituting the given values:
m = 50 kg
v = 5.0 m/s
KE_final = (1/2) * 50 kg * (5.0 m/s)^2 = 625 J
Therefore, the work done by the farmer on the wheelbarrow is 625 J.
2. To find the velocity of the roller coaster when it is one-third of the way down the track (20 m above the ground), we can use the principle of conservation of energy. The potential energy (PE) at the initial height is converted into kinetic energy (KE) at that point. The formula for conservation of energy is:
PE_initial = KE_final
The potential energy at the initial height is given by:
PE_initial = m * g * h
Where m is the mass of the roller coaster, g is the acceleration due to gravity, and h is the initial height. Substituting the given values:
m = 1400 kg
g = 9.8 m/s^2
h = 30 m
PE_initial = 1400 kg * 9.8 m/s^2 * 30 m = 411600 J
The kinetic energy at that point can be calculated using the formula:
KE_final = (1/2) * m * v^2
Where v is the final velocity. Substituting the given values:
m = 1400 kg
v = ?
KE_final = 411600 J
Rearranging the equation, we have:
v = sqrt((2 * KE_final) / m)
v = sqrt((2 * 411600 J) / 1400 kg)
≈ 32.67 m/s
Therefore, when the roller coaster is one-third of the way down the track (20 m above the ground), it is traveling at approximately 32.67 m/s.
3. The work done to slow down the rider (and bike) can be calculated using the work-energy principle. The work done is equal to the change in kinetic energy. The formula for work is:
Work = ΔKE = KE_final - KE_initial
The initial kinetic energy (KE_initial) is (1/2) * m * v_initial^2, and the final kinetic energy (KE_final) is (1/2) * m * v_final^2.
Substituting the given values:
m = 76.0 kg
v_initial = 13.0 m/s
v_final = 4.00 m/s
Work = (1/2) * m * v_final^2 - (1/2) * m * v_initial^2
Work = (1/2) * 76.0 kg * (4.00 m/s)^2 - (1/2) * 76.0 kg * (13.0 m/s)^2
≈ -12168 J
Therefore, the amount of work done to slow the rider (and bike) from 13.0 m/s to 4.00 m/s is approximately -12168 J. The negative sign indicates that work is done against the direction of motion.
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In a pleasant but unfamiliar setting, infants with a secure maternal attachment are most likely toA) act as though their mothers are of little importance to them.B) use their mothers as a base from which to explore the new surroundings.C) cling to their mothers and ignore the new surroundings.D) show hostility when their mothers approach them after a brief absence.
Answers
Infants with a strong maternal connection are more likely to use their mothers as a base from which to explore the new surroundings.
Infants with a secure maternal attachment have the ability to explore their new surroundings while still feeling secure and comforted by their mothers. They use their mothers as a source of comfort and security, while also using them as a "base" from which to explore. They may cling to their mothers or stay close to them, but they are also more likely to be curious and explore the unfamiliar setting. They may look to their mothers for guidance and reassurance but will not be overwhelmed by fear or anxiety. Securely attached infants are able to explore their environment and use their mothers as a secure base, allowing them to feel safe and secure in their new surroundings.
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.
A sample of an ideal gas is contained at initial volume 34 L, temperature 450 K, and pressure 7.7 × 104 Pa. It then is allowed to expand to a volume of 40 L. To calculate the work involved in the expansion, which additional information, if any, must be known about the gas? Assume that known information includes the values of physical constants, such as the ideal-gas constant R.
A.the final pressure of the gas
B.The path of the change from initial to final conditions
C. the final temperature of the gas
Answers
Answer:
it have to be a
Explanation:
Hurricane or typhoons occur when large areas of the open ocean soak up heat from the sun t or f
Answers
Answer: true
Explanation:
A latch coil: maintains its state when power is interrupted and turned back on is only sealed in and returns to reset (off condition) when power is interrupted requires an unlatch coil with the same address to get it to turn off maintains its state when power is interrupted and turned back on and requires an unlatch coil with the same address to get it to turn off
Answers
A latch coil maintains its state when power is interrupted and turned back on, and it requires an unlatch coil with the same address to turn it off.
A latch coil, also known as a latching relay or a bistable relay, is an electromechanical device that can maintain its state even when power is interrupted and then restored. This means that if the latch coil is in an energized (on) state before a power outage, it will remain in that state when the power is turned back on. Similarly, if the latch coil is in a de-energized (off) state, it will stay in that state after a power interruption.
To turn off a latch coil that is in an energized state, an unlatch coil with the same address is required. The unlatch coil is responsible for reversing the state of the latch coil, returning it to the reset or off condition. This means that the unlatch coil must be activated in order to toggle the latch coil from the energized state to the de-energized state.
In summary, a latch coil maintains its state when power is interrupted and turned back on. It requires an unlatch coil with the same address to toggle it off and return it to the reset condition. This characteristic of latch coils makes them useful in applications where it is necessary to maintain a particular state, even in the event of a power outage.
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what is the range of frequency that the 3 db point occurs in? group of answer choices 0 to 10 hz 10 to 100 hz 100 to 1000 hz 1000 to 10000
Answers
The correct option is 10 to 100 Hz. A low pass and high pass filter are cascaded to create a band pass filter. It has two reactive elements, making it a second order filter.
The signal strength to frequency graph looks like this because this filter favors high frequencies: We may do a variety of signal processing operations using the low-pass and high-pass filters, including picking out a certain frequency band. We can easily sketch the perfect filter response since the -3dB point is also quite near to the place where the "unity gain" line and the asymptote for the filter's roll-off curve intersect.
Drawing piecewise-linear approximations for filter performance is no longer necessary in modern times thanks to the usage of computers, but this was not the case when electrical circuit design and analysis first started. Even with the introduction of electronic calculators, the majority of these activities were still done by hand.
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Answer please with working out
Answers
a. Speed = distance/time
b. 1500/300 = 5m/s
c. 10 - 2 = 8/2.4 = 3.33 seconds
2.
a. 0.46 x 2.4 = 1.104 metres
b. 78.4/8 = 9.8 m/2²
Answer:
(1) a) S=D/T
b)5m/s
c)3.33s
(2) a) 1.104m
Explanation:
(1) b) S=D/T
S=1500/300
S=5m/s
c) T= V-U/a
v=10
u= 2
a= 2.4
10-2=8/2.4=3.33s
(2) a) d=s×t
0.46×2.4=1.104m
A vector consists both?
Answers
Answer:
magnitude and a direction
Explanation:
How do longitudinal waves move
Answers
Answer:
in a direction parallel to the direction that the wave moves
Explanation:
Answer:
parallel to the direction....
Research the solar wind and what happens when the solar wind interacts with Earth’s magnetic field. Begin by looking for images and credible sites on the Internet or refer to some books in a library. If searching on the Internet, include the search term magnetosphere. The magnetosphere is the magnetic field surrounding a planet where charged particles are trapped. Answer the following questions:
What is the solar wind?
What happens when Earth’s magnetic field interacts with the solar wind?
What are the Van Allen belts and how are they related to Earth’s magnetic field?
What are auroras and how are they related to Earth’s magnetic field?
Does Earth’s magnetic field protect the planet from the solar wind?
( THIS IS NEEDED BY APRIL 3)
Answers
The solar wind is a stream of radiation particles generated by the Sun's corona, whereas Earth’s magnetic field acts to deflect solar winds.
What is solar wind?The solar wind is a stream of radiation particles that are released from the last layer of the Sun (Sun's corona).
Earth’s magnetic field acts to deflect solar winds, where the Van Allen belt refers to the area of charged particles in the magnetosphere.
Finally, the aurora is produced by the collisions between charged particles from solar winds and gases present in the last layer of the atmosphere.
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Answer:
Yes, I'm late I'm sorry but here's my answer.
Explanation:
1. Solar wind is the solar wind is a stream of radiation particles that are released from the last layer of the Sun and the Earth’s magnetic field acts to deflect solar winds, where as the Van Allen belt refers to the area of charged particles in the magnetosphere. The aurora is produced by the collisions between charged particles from solar winds and gases present in the last layer of the atmosphere.
2. When the solar wind encounters Earth, it is deflected by our planet's magnetic shield, causing most of the solar wind's energetic particles to flow around us.
3. The Van Allen radiation belt is a zone of energetic charged particles, which can originate from the solar wind. The particles are then captured by and held around a planet by that planet's magnetic field.
4. An aurora is that natural light displayed in the Earth's sky, predominantly seen in high-latitude regions. Auroras are the result of disturbances in the magnetosphere caused by the solar wind.
5. Yes
The gravitational force exerted on a star by a planet is
- stronger than that exerted on the planet by the star and in the same direction
- weaker than that exerted on the planet by the star and in the same direction
- equal to that exerted on the planet by the star and in the same direction
- equal to that exerted on the planet by the star and in the opposite direction
Answers
The gravitational force exerted on a star by a planet is equal to that exerted on the planet by the star and in the opposite direction.
According to Newton's third law of motion, for every action, there is an equal and opposite reaction. This principle applies to the gravitational force as well. The force of gravity between two objects depends on their masses and the distance between them.
In the case of a star and a planet, both objects exert a gravitational force on each other. The force exerted by the star on the planet is equal in magnitude to the force exerted by the planet on the star. However, the direction of the forces is opposite. The star attracts the planet with a force, while the planet attracts the star with an equal force but in the opposite direction.
Therefore, the correct answer is: The gravitational force exerted on a star by a planet is equal to that exerted on the planet by the star and in the opposite direction.
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The tendency to ignite or burn in air is known as what
Answers
Answer:
Combustible/combustion.
Explanation:
Answer:
Spontaneous Combustion
Explanation:
A machine converts 40% of electrical energy into mechanical energy and 60% into heat energy. What statement explains the law of conservation of energy?
a.Machines always convert only a part of electrical energy to another form of energy.
b.Electrical energy always produces heat energy.
c.The machine changes the form of the electrical energy but cannot create or destroy energy.
d.Electrical energy is always accompanied by mechanical energy.
Answers
Answer:
weg e
Explanation:
A block of metal weighs 60 newtons on the earth. You take it to the moon and find it weighs 10 newtons. With what acceleration will it
fall on the moon?
O
m
• 6.0 m/s2
9.8 m/s2
o
1.6 m/s
1.0 m/s?
2
Answers
Answer:
1.6 m/s
Explanation:
In what 3 ways in which organs of the circulatory system and the respiratory system are protected
Answers
The organs of the circulatory system and the respiratory system are protected by the cutaneous system, the thoracic cage, and the immune system.
The cutaneous system is mainly made up of the skin. The skin is made of multiple layers of ectodermal tissue. It protects the body from UV radiations and also cold climatic conditions. The thoracic cage is also called as the rib cage. It is one of the main system that protects the vital organs.
The immune system protects the organs against infections from viruses, bacteria, fungi etc. The immune system is not like the other systems. Because it is made up of cells and not tissues. These cells are sterile.
Therefore, the the three ways in which they are protected are by
Cutaneous systemThoracic cageImmune systemTo know more about immune system
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Which of the following statements are TRUE about nuclear energy?
A.Nuclear energy can result from splitting large atoms.
B.Nuclear energy can result from combining small atoms.
C.Nuclear energy is how the sun and stars make energy.
D.All of the above.
Answers
Answer:
d
Explanation:
After which action would the concentration of a solution remain constant?(1 point)
removing solution from the container
adding water to the solution
evaporating water from the container
adding solute to the solution
Answers
Answer:
The action that would cause the concentration of a solution to remain constant is removing solution from the container.
What is concentration of a solution?
The concentration of a solution is the measure of the amount of solid particles (solute) that has been dissolved in the given amount of a solvent.
Adding water to a solution will dilute the solution, hence changes the concentration of the solution.
Also, adding solute will change the concentration of the solution.
Thus, the action that would cause the concentration of a solution to remain constant is removing solution from the container.
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If the force = 190N and d = 2.0 m, what is work?
Answers
Work = Force x Distance x cos(theta)
where theta is the angle between the direction of the force and the direction of the displacement.
Assuming the force is applied in the same direction as the displacement (i.e. theta = 0), we can simplify the formula to:
Work = Force x Distance
Plugging in the given values, we get:
Work = 190 N x 2.0 m
Work = 380 Joules (J)
Therefore, the work done in this situation is 380 Joules (J).
But if there is an angle theta(different than 0) you should use the first formula.
What is the Compact Muon Solenoid used to study? materials that give off harmful radiation the current produced by different types of magnets different materials that conduct current the particles emitted when atoms collide
Answers
Answer:
D: The particles emitted when atoms collide
Explanation:
Just took the test
The compact muon solenoid used to study when the particles emitted when atoms collide. Option D is correct.
What is a solenoid?A coil of wire that carries an electric current is a solenoid. A solenoid is an electromagnet formed by a helical coil of wire. Which generates a magnetic field when an electric current is passed through the coil .
A solenoid is a form of coil that produces a magnetic field when the electric current is passed through it. A solenoid is created when a conductive wire is used to make a loop.
The compact muon solenoid used to study when the particles emitted when atoms collide.
Hence, option D is correct.
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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.
prove p=f/a science chapter pressure
Answers
Explanation:
Let 'F' be force acting perpendicularly, 'A' be the area and 'P' be the pressure exerted.
Then,
Pressure is directly proportional to the the force acting perpendicularly i.e.
P ∝ F ............. (i)
Pressure is inversely proportional to the area on which force acts i.e.
P ∝ 1/A ........... (ii)
Combining equations (i) and (ii),
P ∝ F/A
or, P = K × F/A [where K is a constant]
If F is 1N, A is 1m² and P is 1 N/m², then K is 1.
So, P = F/A proved...