Explain the terms boiling and boiling point.
How is the volume of water affected when it boils at 100°C.?


Don't spam.. ​

Answers

Answer 1

The particular temperature at which vaporisation occurs is known as the boiling point of liquid. Volume of water increases when it boils at 100° C. 1 cm3 of water at 100 ° C becomes 1760 cm3 of steam at 100 ° C.

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Related Questions

Two objects of the same mass travel in the same direction along a horizontal surface. Object X
has a speed of 5 ms
and object Y
has a speed of 2 ms
, as shown in the figure. After a period of time, object X
collides with object Y
.

Consider the situation in which the objects collide but do not stick together. Which of the following predictions is true about the center of mass of the two-object system immediately after the collision?

Answers

After the collision, object X will move at a speed of 2 m/s in its original direction while object Y will move at a speed of 5 m/s in its original direction.

Elastic collision of the two objects

When the two objects collide but do not stick together, the type of collision is elastic collision.

In elastic collision, both momentum and kinetic energy are conserved.

Final velocity of the two objects after collsion

mu₁ + mu₂ = mv₁ + mv₂

5m + 2m = mv₁ + mv₂

m(5 + 2) = m(v₁ + v₂)

7 = v₁ + v₂ -------- (1)

Apply the concept of one direction velocity;

u₁ + v₁ = u₂ + v₂

5 + v₁ = 2 + v₂

v₂ = v₁ + 3 ------ (2)

Solve (1) and (2) together;

7 = v₁ + v₁ + 3

4 = 2v₁

v₁  = 2 m/s

v₂  = 2 + 3 = 5 m/s

Thus, after the collision, object X will move at a speed of 2 m/s in its original direction while object Y will move at a speed of 5 m/s in its original direction.

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What are the conditions necessary for a terrestrial planet to have a strong magnetic field?.

Answers

Both a molten metallic core and reasonably fast rotation.

Where in their life cycle are stars on the main sequence?.

Answers

Answer ,,a main sequence stars burns through the hydrogen in it's core

Explanation:

When the stars go out

Eventually,reaching the end of its life cycle. At this point, it leaves the main sequence. Stars smaller than a quarter the mass of the sun collapse directly into white dwarfs

What is the wavelength of a light ray that has a frequency of 7.4 E12 Hz?

Answers

The wavelength of the light ray with the given frequency is 4.05 × 10⁴nm.

Given the data in the question;

Frequency of the light ray; [tex]f = 7.4 * 10^{12}Hz[/tex]Wavelength; [tex]\lambda = \ ?[/tex]

Wavelength

Wavelength can be simply defined as the spatial period of a periodic wave. When the shapes of waves are repeated, the distance over which they are repeated is called wavelength. Wavelength is expressed as;

[tex]\lambda = \frac{c}{f}[/tex]

Where [tex]\lambda[/tex] is wavelength, f is frequency and c is speed of light( [tex]c = 3*10^8m/s[/tex] )

We substitute our values into the expression above to determine the wavelength of the light ray.

[tex]\lambda = \frac{c}{f} \\\\\lambda = \frac{3*10^8m/s}{7.4*10^{12}s^{-1}}} \\\\\lambda = \frac{3*10^8ms/s}{7.4*10^{12}}}\\\\\lambda = 4.05*10^{-5}m\\\\\lambda = 4.05*10^{4}nm[/tex]

Therefore, the wavelength of the light ray with the given frequency is 4.05 × 10⁴nm.

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A 50 kg object moving at 15 m/s collides with another 50 kg object moving in the same direction at 10 m/s. If the collision is inelastic, what is the final velocity of the two objects after they combine?

Answers

Answer:

12.5 m/s

Explanation:

By conservation of momentum, we have that:
[tex]\displaystyle m_1v_1 + m_2v_2 = m_1v_1' + m_2v_2'[/tex]

Because the two objects combine after collision, they will have the same velocity:

[tex]\displaystyle m_1v_1 + m_2v_2 = (m_1+m_2)v_f[/tex]

Substitute and solve for final velocity:

[tex]\displaystyle \begin{aligned} (50 \text{ kg})(15\text{ m/s}) + (50\text{ kg})(10\text{ m/s}) & = ((50+50)\text{ kg})v_f \\ \\ v_f & = 12.5\text{ m/s}\end{aligned}[/tex]

In conclusion, the final velocity of the system will be 12.5 m/s.

a measuring cylinder has a mass of 180g when empty. When a liquid is poured into the cylinder, the level rises to the 95m³ mark. Total mass is now 292g. What is the density of the of the liquid in g/cm³​

Answers

Answer:

d (density) = m / V = (292 - 180) g / 95 cm^3 = 1.18 g / cm^3

(water is 1 gm / cm^3)

.
Which object has a constant speed?

a bicycle coming to a stop
a racecar starting a race
a ball falling off a table
a car traveling the speed limit

Answers

A car traveling the speed limit. Constant speed doesn’t have acceleration.

It wouldn’t be the first option because the bicycle is stopping.

Not the second because when a race car starts a race, they accelerate incredibly to begin driving the second they’re allowed to

A 10. 0 cm object is 5. 0 cm from a concave mirror that has a focal length of 12 cm. What is the distance between the image and the mirror? 3. 5 cm –3. 5 cm 8. 6 cm –8. 6 cm.

Answers

The distance between the image and the mirror is -8.6 cm

What is concave mirror?

A concave mirror has a reflective surface that is curved inward and away from the light source. Concave mirrors reflect light inward to one focal point.

Unlike convex mirrors, the image formed by a concave mirror shows different image types depending on the distance between the object and the mirror.

Let's use the mirror equation to solve the problem:

[tex]\dfrac{1}{f}=\dfrac{1}{d_o}+\dfrac{1}{d_i}[/tex]

where f is the focal length of the mirror,  the distance of the object from the mirror, and  the distance of the image from the mirror.

For a concave mirror, for the sign convention f is considered to be positive. So we can solve the equation for  by using the numbers given in the text of the problem:

[tex]\dfrac{1}{12}=\dfrac{1}{5}+\dfrac{1}{d_i}[/tex]

[tex]\dfrac{1}{d_i}=-\dfrac{7}{60}[/tex]

[tex]d_i=-8.6\ cm[/tex]

Where the negative sign means that the image is virtual, so it is located behind the mirror, at 8.6 cm from the center of the mirror.

Hence the distance between the image and the mirror is -8.6 cm

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The _____ acceleration is deceleration​

Answers

Answer:

hello.

Negative acceleration is also called deceleration.

Explanation:

If the velocity of the object does not change with time, it has zero acceleration.

Hello people ~
The frequency of subsonic sound is
(a) more than 20 Hz
(b) 100 Hz
(c) less than 20 Hz
(d) more than 20,000 Hz

Answers

less than 20 Hz

The frequency of subsonic sound is less than 20 Hz

subsonic sound refers to a sound which has a wave that travels slower than the speed of sound.

frequency of audible sound: 20 Hz to 20,000 Hz

Thus subsonic sound < 20 Hz

Answer:

less than 20Hz

Explanation:

Human ears can hear sounds coming in range of 20Hz to 20000Hz or 20kHz.Low or beneath is not audible.

Bats can hear below 20Hz ,so they use this to travel in air

What does it mean for forces to be in equilibrium?.

Answers

Explanation:

If the size and direction of the forces on the object are exactly balanced , then there is no net force acting on the object

What is the average velocity of the fly between 0 and 15 seconds

Answers

Answer:

where is the displacement

[tex]v = \frac{s}{t} [/tex]

The average velocity of the fly between 0 and 15 seconds will be 10 m/sec.Velocity is the time-based component.

What is average velocity?

The average velocity is the ratio of the total distance traveled to the total time taken by the body. Its unit is m/sec.

From the given graph it is obsderved that the displacement from 0 to 15 seconds will be 150 m.

[tex]\rm V = \frac{D_2-d_1 }{t_2-t_1} \\\\ V = \frac{150}{15-0} \\\\ V= 10 \ m/sec[/tex]

Hence the average velocity of the fly between 0 and 15 seconds will be 10 m/sec.

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3. In the formula F = −kx , what does the minus sign indicate?
It indicates that the restoring force is in the direction of the displacement.
It indicates that the restoring force is in the direction opposite the displacement.
It indicates that mechanical energy in the system decreases when a system undergoes oscillation.
None of the above

Please show all of your work.

Answers

In the formula F = −kx , what does the minus sign indicate?

Solution: It indicates that the restoring force is in the direction opposite the displacement.

====================================================

k  is the force constant

F is the restoring force.

negative sign represents the restoring force.

x is the displacement

Answer:

It indicates that the restoring force is in the direction opposite the displacement.

Explanation:

I had an explanation but, my acc got deleted and yeah, uhm the explanation is dead now, I know this is correct though!

~Kandy~

hope this helped!

brainliest please!

To measure a population’s baseline genetic state, it must have _____________ to be in hardy-weinberg equilibrium

Answers

Answer:

b

Explanation:

b

Red light has a wavelength of (7. 21x10^7)m. What is the frequency of this light?

Answers

Answer:

TO answer this question i need wave speed

Explanation:

What is stated in the 1st Law of Motion?

Answers

Answer:

Newton's first law: the law of inertia

Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Explanation:

Anything aka if a body is at constant speed in a straight line it would probably remain or keep moving in a straight line unless something slows it down like Fricton.

A rollercoaster loop has a radius of 22.7 m. what is the minimum speed the coaster must have at the top of the loop to not fall off the track? (unit = m/s)

Answers

Answer:

v = 14.92 m/s

Explanation:

First, make a free body diagram and see the forces in the y-direction.

∑F_y = F_N - F_g

Use Newton's 2nd Law F = ma to replace ∑F_y with m * a_y.

m * a_y = F_N - F_g

The acceleration in the y-direction is the centripetal acceleration, a_c = v^2/r.

m * v^2/r = F_N - mg

The normal force is 0 because this is where the rollercoaster is not falling off the track yet not touching the track.

m * v^2/r = - mg

The masses cancel out.

v^2/r = -g

Solve for v to find the speed of the rollercoaster at the top of the loop.

v^2 = -(-9.81) * r v = √(9.81 * 22.7)v = 14.9227

The minimum speed the coaster must have at the top of the loop to not fall off the track is 14.92 m/s.

Scientists observed a rocky, rotating object orbiting in space. It was 250 km wide. The rocky object was located several times farther away from the sun than the earth

Answers

The rocky object orbiting in space is most likely referred to as an asteroid.

What is an Asteroid?

This is referred to a rocky object which revolve around the sun and are considered too small to be called a planet.

Asteroids was observed with the use of a telescope and is around 250 km wide thereby making it the most appropriate choice.

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The field found in this problem for a moving charge is the same as the field from a current element of length dl carrying current i provided that the quantity qv is replaced by which quantity?

Answers

The magnetic field for a moving charge is the same as the magnetic field from a current element of length, dL, carrying current, I, provided that the quantity qv is replaced by 'IL'.

Magnetic force on charged particle

The magnetic force on a charged particle is determined from the product of the magnetic field strength (B), speed of the charge (v) and magnitude of the charge (q).

The magnitude of the force is caculated using the following formula;

F = qvB

Magnetic force on a current carrying element

The magnitude of the force is calculated using the following formula,

F = BILsinθ

when the angle of inclination = 90 degrees

F = BIL

Where;

B is the magnetic field strengthI is currentL is length of the wire

At equal magnetic force, the magnetic field can be calculated as follows;

B = F/qv = F/IL

Thus, the magnetic field for a moving charge is the same as the magnetic field from a current element of length, dL, carrying current, I, provided that the quantity qv is replaced by 'IL'.

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The moving charge is the same as the field from a current element of length dl carrying current I provided that the quantity qv is replaced by "IL".

What is a magnetic field?

It is the type of field where the magnetic force is obtained. With the help of a magnetic field. The magnetic force is obtained it is the field felt around a moving electric charge.

The magnetic force on the charged particle is found as;

[tex]\rm F = qvB[/tex]

The magnetic force on the current-carrying wire is found as;

[tex]\rm F = BIL sin \theta[/tex]

When the angle of inclination is at a right angle;

[tex]\rm F= BIL[/tex]

The magnetic field is;

[tex]\rm B = \frac{F}{qv} \\\\ B= \frac{F }{IL}[/tex]

The moving charge is the same as the field from a current element of length dl carrying current I provided that the quantity qv is replaced by "IL".

Hence the quantity qv is replaced by "IL".

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A very long straight wire carries a current i in the z direction

Answers

Answer:

what are you calculating put the full question so I can help you out: )

Explanation:

its quite confusing just a little lol

What is atmospheric pressure?

Answers

The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure

If a 5-kg object experiences a 10-N force for a duration of 0. 10-second then what is the impulse exerted by the force on the object? What is the momentum change of the object? What is the change in velocity for the object?

Answers

Answer:

orce = rate of change of momentum which is m a if the mass is constant

10 Newtons = change of momentum/0.10 second

so change of momentum = 1 kg m/s

by the way the change in speed would be 1/5 = .2 m/s

Explanation:

If a 5-kg object experiences a 10-N force for a duration of 0. 10-second then the impulse exerted by the force on the object would be 1 Ns, and the change in the momentum would be  1 Ns.

What is momentum?

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.

As given in the problem If a 5-kg object experiences a 10-N force for a duration of 0. 10-second then we have to find out what the impulse exerted by the force on the object.

P = force × time

  = 10 × 0.1

  = 1  Ns

Thus, If a 5-kg object experiences a 10-N force for a duration of 0. 10-second then the impulse exerted by the force on the object would be 1 Ns, and the change in the momentum would be  1 Ns.

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The diagram above shows a ballistic pendulum. A 10 g bullet is fired into the suspended 2 kg block of wood and
remains embedded inside it (a perfectly inelastic collision). After the impact of the bullet, the block swings up to a
maximum height h. If the initial speed of the bullet was 35 m/s:

A.) What was the momentum of the bullet before the collision?

B.) What was the kinetic energy of the bullet before the collision?

C.) What was the velocity of the bullet-block system just after the collision?

D.) What was the total kinetic energy of the bullet-block system after the collision?

E.) What is the maximum possible potential energy of the bullet-block system when it reaches its maximum height?

F.) What is the maximum possible height of the bullet-block system?

Answers

The kinetic energy of the bullet-block system is equal to the potential energy of the bullet-block system when it reaches its maximum height.

Conservation  of Linear momentum

According to the principle of conservation of linear momentum, momentum before collsion is equal to momentum after collision. Let us now answer the questions individually.

1) The momentum of the bullet before collsion = (0.001 Kg * 35 m/s) = 0.35 Kgms-1

2) The kinetic energy of the bullet before collision = 0.5 * 0.001 * (35 m/s)^2 = 0.6125 J

3) Velocity after collsion is obtained from;

(0.001 Kg * 35 m/s) + (2 kg * 0 m/s) = (0.001 Kg + 2 kg) v

v = 0.35/2.001 =

v=0.1749 m/s

4) Total kinetic energy after collison = 0.5 * (0.001 Kg + 2 kg) * (0.1749 m/s)^2

= 0.031 J

5) The maximum possible potential energy of the bullet-block system when it reaches its maximum height = Total kinetic energy after collison = 0.031 J

6) The  maximum possible height of the bullet-block system is obtained from;

PE = mgh

h = 0.031 J/(0.001 Kg + 2 kg) * 9.8 ms-2

h = 0.0015 m or 0.15 cm

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Arm ab has a constant angular velocity of 16 rad/s counterclockwise. At the instant when theta = 60

Answers

The linear acceleration of collar D when θ = 60° is - 693.867 inches per square second.

How to determine the angular velocity of a collar

In this question we have a system formed by three elements, the element AB experiments a pure rotation at constant velocity, the element BD has a general plane motion, which is a combination of rotation and traslation, and the ruff experiments a pure translation.

To determine the linear acceleration of the collar ([tex]a_{D}[/tex]), in inches per square second, we need to determine first all linear and angular velocities ([tex]v_{D}[/tex], [tex]\omega_{BD}[/tex]), in inches per second and radians per second, respectively, and later all linear and angular accelerations ([tex]a_{D}[/tex], [tex]\alpha_{BD}[/tex]), the latter in radians per square second.

By definitions of relative velocity and relative acceleration we build the following two systems of linear equations:

Velocities

[tex]v_{D} + \omega_{BD}\cdot r_{BD}\cdot \sin \gamma = -\omega_{AB}\cdot r_{AB}\cdot \sin \theta[/tex]   (1)

[tex]\omega_{BD}\cdot r_{BD}\cdot \cos \gamma = -\omega_{AB}\cdot r_{AB}\cdot \cos \theta[/tex]   (2)

Accelerations

[tex]a_{D}+\alpha_{BD}\cdot \sin \gamma = -\omega_{AB}^{2}\cdot r_{AB}\cdot \cos \theta -\alpha_{AB}\cdot r_{AB}\cdot \sin \theta - \omega_{BD}^{2}\cdot r_{BD}\cdot \cos \gamma[/tex]   (3)

[tex]-\alpha_{BD}\cdot r_{BD}\cdot \cos \gamma = - \omega_{AB}^{2}\cdot r_{AB}\cdot \sin \theta + \alpha_{AB}\cdot r_{AB}\cdot \cos \theta - \omega_{BD}^{2}\cdot r_{BD}\cdot \sin \gamma[/tex]   (4)

If we know that [tex]\theta = 60^{\circ}[/tex], [tex]\gamma = 19.889^{\circ}[/tex], [tex]r_{BD} = 10\,in[/tex], [tex]\omega_{AB} = 16\,\frac{rad}{s}[/tex], [tex]r_{AB} = 3\,in[/tex] and [tex]\alpha_{AB} = 0\,\frac{rad}{s^{2}}[/tex], then the solution of the systems of linear equations are, respectively:

Velocities

[tex]v_{D}+3.402\cdot \omega_{BD} = -41.569[/tex]   (1)

[tex]9.404\cdot \omega_{BD} = -24[/tex]   (2)

[tex]v_{D} = -32.887\,\frac{in}{s}[/tex], [tex]\omega_{BD} = -2.552\,\frac{rad}{s}[/tex]

Accelerations

[tex]a_{D}+3.402\cdot \alpha_{BD} = -445.242[/tex]   (3)

[tex]-9.404\cdot \alpha_{BD} = -687.264[/tex]   (4)

[tex]a_{D} = -693.867\,\frac{in}{s^{2}}[/tex], [tex]\alpha_{BD} = 73.082\,\frac{rad}{s^{2}}[/tex]

The linear acceleration of collar D when θ = 60° is - 693.867 inches per square second. [tex]\blacksquare[/tex]

Remark

The statement is incomplete and figure is missing, complete form is introduced below:

Arm AB has a constant angular velocity of 16 radians per second counterclockwise. At the instant when θ = 60°, determine the acceleration of collar D.

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Hello people ~
Voice of man is heavy compared to a woman because
(a) Female vocal cord is longer
(b) Male vocal cord is shorter
(c) Male vocal cord is longer
(d) The concept is not related​

Answers

Answer:

(c) the male vocal cord is longer

Explanation:

Males have a lower pitch in their voises than females, elongating men's vocal cords.

I am joyous to assist you at any time.

Voice of man is heavy compared to a woman because male vocal cord is longer.

What is the difference between male and female voice?

The change is caused by an enlargement in the vocal folds, generating a more serious and adult voice. Generally speaking, the male voice is deeper than the female voice because the vocal muscles grow more in men than in women.

Males have a lower pitch in their voises than females, elongating men's vocal cords.

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With upward speeds of 12.5 m/s, the elevators in the Yokohama Landmark Tower in Yokohama, Japan, are among the fastest elevators in the world. Suppose a passenger with a mass of 70.0 kg enters one of these elevators. The elevator then goes up, reaching full speed in 4.00 s. Calculate the net force that is applied to the passenger during the elevator's acceleration.

Answers

The net force that is applied to the passenger during the elevator acceleration is 218.75 N.

What is net force?

This is the single force obtained from the combinatiion of two or more forces

To calculate the net force that is applied to the passenger during the elevator's acceleration, we use the formula below.

Formula:

F = m(v-u)/t............ Equation 1

Where:

F = forcem = massv = Final velocityu = initial velocityt = time.

From the question,

Given:

m = 70 kgu = 0 m/sv = 12.5 m/st = 4 s

Substitute these values into equation 1

F = 70(12.5-0)/4F = 218.75 N

Hence, The net force that is applied to the passenger during the elevator acceleration is 218.75 N.

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The cooper family hijacks a UAV (Unmanned Aerial Vehicle). What do you know about UAVs and how they are used today?

Interstellar movie☝️

Answers

Interstellar is a movie about the human race being faced with a

civilization ending blight. A small group of brave individuals explore

possible new habitable worlds for humans. The following questions

will help guide you through the movie and hopefully get you

thinking about the future.

1. The Cooper family hijacks a UAV (Unmanned Aerial Vehicle).

What do you know about UAVs and how they are used today?

2. While at the parent-teacher conference, Murphy’s teacher

mentions that the Apollo program -- the same program that

landed humans on the Moon -- was just propaganda to

convince the Soviet Union to bankrupt themselves trying to do

the same. The reason for this was to encourage children to

take care of their own planet, rather than wasting precious

resources day dreaming of leaving it. Which side of the fence

would you sit on? Would you look for ways to save Earth and

our ability to stay there, or would you look to the sky, and find

a new planet to live on? Why?

3. A) What natural disaster(s) is Earth suffering from in the beginning of Interstellar?

B) If one of these happened now what actions would you take to protect yourself?

4. Cooper, Doyle, Romilly, and Dr. Brand (female) rendezvous with the Endurance in orbit around Earth. Once

onboard, they begin to spin the Endurance. Why? (Think about the physics happening here!) Draw a diagram.

5. Why or why isn’t space exploration important for the people in the movie interstellar? Why or why isn’t

space exploration important in today’s society? Defend your answers.

6. Explain time dilation as best as you can.

7. A) Estimate how long Dr. Mann went without human contact while on the ice planet:

The Lazarus mission was __________ years ago. It takes _______ years to get to Saturn from Earth. Cooper

and Dr. Brand were on Miller’s planet for approximately __________ years. This means the total time Dr.

Mann went without human contact is: ___________ years.

B) Consider the longest time away from human contact you've experienced. What did you do to keep yourself

occupied?

Useful Vocabulary

Blight: A specific symptom affecting plants in

response to infection by a pathogenic organism. The

potato famine of Ireland was caused by blight.

Event horizon: Is a point in which not even light can

escape the gravitational influence of the black hole.

Maroon: The intentional action of leaving someone

in a remote area such as an inhabitable island.

Rendezvous: When two objects meet and typically

dock together while in space.

Time dilation: A difference of elapsed time between

two events as measured by observers either moving

relative to each other or differently situated from

gravitational masses.

UAV: Unmanned Aerial Vehicles are remote

controlled or autonomous flying vehicles.

Unmanned aerial vehicles (UAVs) are typically used for a variety of purposes such as:

Monitoring and surveillance.Remote sensingPhotographyDisaster response

What is an unmanned aerial vehicle?

An unmanned aerial vehicle (UAV) is also referred to as a drone and it can be defined as an aircraft that is designed and developed to be piloted or controlled by a remote control (ground-based controller) and on-board computer systems.

This ultimately implies that, an unmanned aerial vehicle (UAV) is a class of aircrafts that can fly without any human pilot, cabin crew, or passengers on board.

In conclusion, unmanned aerial vehicles (UAVs) carries no human pilot and are typically used for a variety of purposes such as:

Monitoring and surveillance.Remote sensingPhotographyDisaster response

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Who discovered the basic laws of planetary orbits?.

Answers

Answer:

Johannes Kepler

Hello people~
help me with this question ^^

An electroscope is a device which is used to find if an object is

(a) charged

(b) magnetic

(c) free of cracks

(d) hot

Answers

Answer:

Charged

Explanation:

Look at a example below

You took a pen Rubbed it on your hair fastly for 2 mins If you took that rubbed part towards paper ,both will be attracted and joined for some while.

Which letter explains why no machine is 100 percent efficient.
A.Mechanical energy is transformed into thermal energy by friction.
B.Mechanical energy is transformed into electrical energy by a spark.
C.Thermal energy is transformed into mechanical energy by friction.

Answers

Answer:

A

Explanation:

Think about rubbing your hands together- the friciton produces heat

Other Questions
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