How much heat energy is given out when 500g of steam at 100 degrees celcius condenses to water at 100 degrees celcius

Answers

Answer 1

Explanation:

How much thermal energy is released when 500g of steam at 100° C condenses into water and cools to 50°C

Givens: m=0.5 kg

t = 50

c = 2.010

Qtotal = Q1 + Q2

Qtotal = QmcΔt + mLv

Qtotal = (0.5kg)(2.010)(50) + (0.5)(2.3*10^6)

Qtotal = 1.15 * 10^6

The book says that the answer is 1.3*10^6?

What did I do wrong here?


Related Questions

As the Sun ages, what will happen to life here on Earth? Why?

Answers

Answer:

As the Sun ages it will enter another stage of stellar evolution where it's atmosphere begins to inflate.As the Sun heats up and expands, life on Earth will become increasingly difficult. Long before the Sun becomes a red giant some 4 or 5 billion years from now, our planet will be rendered uninhabitable.

~I HOPE IT HELPS♡

Which green shape is the least reactive?

(Subjective is actually science)​

Answers

Answer:

the green smiley face

Explanation:

its is farthest from the right

and as stated on the chart, the farther left, the more reactive

less stable=more reactive

more stable= less reactive

The green smiley face

Horse's Motion
Pamond
25
20
Account
Velocity
(meters per second)
15
10
Dashboard
5
0
Courses
0 5 10 15 20 25
Time (seconds)
Groups
Based on the information in the graph, which statement is
true?
Calendar
The horse maintained a constant acceleration during this portion of the race.
Inbox
The horse maintained a constant velocity during this portion of the race.
The horse increased its acceleration during this portion of the race.
History
The horse decreased its velocity during this portion of the race.
Studio

Answers

Answer:

The answer will be the number 15 because it is subtracted to the number itself

how much potential energy does the ball have when it reaches the top of its ascent​

Answers

PE = 450 m

Further explanation

Given

The initial problem might be like this

A 1.0-kg ball is thrown into the air with an initial velocity of 30 m/s.

Required

Potential energy

Solution

h max = vo²sin²θ/2g

h max = 30²sin²90/2.10

h max = 45 m

PE = m.g.h

PE = 1 x 10 x 45

PE = 450 m

James is planning a science fair project on sound waves. He places an alarm inside a jar which he can remove the
air from. Before he removes the air, he can hear the alarm ringing. After he removes the alr, he cannot hear the
alarm ringing. What condusion can you draw from this experiment?


A. Sound waves can travel in a vacuum
B. Sound waves are transverse waves and are loud
C. Sound waves cannot travel through a medium
D. Sound waves require a medium to travel through

Answers

Answer: c

Explanation:

Sound waves cannot travel through a medium

how find \empirical formula

Answers

the empirical formula of a chemical compound is the simplest positive integer ratio of atoms present in a compound. A simple example of this concept is that the empirical formula of sulfur monoxide, or SO, would simply be SO, as is the empirical formula of disulfur dioxide, S₂O₂. Thus, sulfur monoxide and disulfur dioxide, both compounds of sulphur and oxygen, have the same empirical formula. However, their molecular formulas, which express the number of atoms in each molecule of a chemical compound, are not the same.

A tennis ball is dropped from a height of 1.21m above the ground. Calculate its velocity when it is 0.27m from the ground.

Answers

9.81m/s^2 x .27 = 2.6487m/s

The velocity of hitting the ground is 4.86 m/s and the velocity after hitting the ground is 4.53 m/s.

What is Velocity?

Velocity can be defined as the direction of movement of the body or object. Velocity is a vector quantity. It is the rate of change of displacement.

Given data,

Initial velocity when dropped(u)=0 m/s

Distance traveled(s)=1.21 m/s

Distance traveled after leave the ground(s1) = 1.05 ms

According to third law of motion,

v² = u² + 2gs

Initial velocity u=0

v² = 2gs or v = [tex]\sqrt{2gs}[/tex]

​by putting the value of s

v (hitting) = √(2 × 9.8 × 1.21) = [tex]\sqrt{23.71}[/tex] = 4.86m/s

After leaving ground at 1.21 m final velocity will be zero

So, velocity just after left the ground will be

2 = √(2 × 9.8 × 1.05) = [tex]\sqrt{20.58}[/tex] = 4.53m/s

So, velocity of hitting the ground is 4.86 m/s and after hitting is 4.53 m/s.

Learn more about Velocity here:

https://brainly.com/question/18084516

#SPJ2

What is the gravitational force between two 1 kg objects that are 1 m apart?

Answers

Answer:

[tex]F=6.67\times 10^{-11}\ N[/tex]

Explanation:

Given that,

The masses of two objects, m₁ = m₂ = 1 kg

The distance between masses, d = 1 m

We need to find the gravitational force between two masses. The force is given by the relation as follows :

[tex]F=G\dfrac{m_1m_2}{d^2}\\\\F=6.67\times 10^{-11}\times \dfrac{1\times 1}{(1)^2}\\F=6.67\times 10^{-11}\ N[/tex]

So, the force between two masses of 1 kg is [tex]6.67\times 10^{-11}\ N[/tex].

An object that is slowing down is accelerating.
True
False

Answers

Answer:

True

Explanation

When an object slows down the Acceleration is in the other direction which “ slows it down

V,? = V2 + 2a Ax
1. A toy car increases velocity over a displacement of 15.2 m. If
the car starts at rest and has a final velocity of 0.76 m/s, what
is the magnitude of its acceleration?

Answers

Answer:

Explanation:

[tex]V^2=V^2_i+2a(x_f-x_i)[/tex]

[tex]0.76^2=0^2+2a(15.2)[/tex]

[tex]0.5776=30.4a[/tex]

[tex]a=0.019m/s^2[/tex]

Two lasers are shining on a double slit, with slit separation d. Laser 1 has a wavelength of d/20, whereas laser 2 has a wavelength of d/15. The lasers produce separate interference patterns on a screen a distance 4.60 mm away from the slits.

A) Which laser has its first maximum closer to the central maximum?

B) What is the distance between the first maxima (on the same side of the central maximum) of the two patterns?

Answers

Answer:

A. Laser 1 has its first maximum closer to the central maximum.

B. 0.077 mm

Explanation:

A) Which laser has its first maximum closer to the central maximum?

Since for a double slit interference, sinθ = mλ/d where θ is the angle between the central axis and the maximum point, m = order of fringe, λ = wavelength of light and d = width of slit.

Also tanθ = y/D where θ is the angle between the central axis and the maximum point, y = distance between maximum point and central axis and D = distance between slit and screen = 4.60 mm.

Since θ is small,  sinθ ≅  θ and  tanθ ≅ θ

So, sinθ ≅ tanθ  

mλ/d = y/D

So, y = mλD/d for the first maximum, m = 1.

So,  y = (1)λD/d

y = λD/d

For the Laser 1, λ = d/20

So, y = λD/d

y = (d/20)D/d  

y = D/20

y = 4.60 mm/20

y = 0.23 mm

For the Laser 2, λ' = d/15

So, y' = λ'D/d

y' = (d/15)D/d  

y' = D/15

y' = 4.60 mm/15

y' = 0.307 mm

Since y = 0.23 mm < y' = 0.307 mm, Laser 1 has its first maximum closer to the central maximum.

B) What is the distance between the first maxima (on the same side of the central maximum) of the two patterns?

The distance between the first maxima (on the same side of the central maximum) of the two patterns is Δy = y' - y = 0.307 mm - 0.23 mm = 0.077 mm

What force will accelerate a 20 kg object at 4 m/s 2? *

Answers

Answer:

80 N

Explanation:

mass = 20 kg

acceleration = 4 m/s^2

Force = mass * acceleration

         = 20 *4  

         = 80 N

need some help!!!!!!! please

Answers

Wave speed



Because Wave speed is the number of wavelength in one second.

Where, frequency is number of waves per second.

To test the strength of a retainment wall designed to protect a nuclear reactor,
a rocket-propelled F-4 Phantom jet aircraft was crashed head-on into a
concrete barrier at high speed in Sandia, New Mexico, on April 19, 1988. The
F-4 phantom had a mass of 19,100 kg, while the retainment wall's mass was
469,000 kg. The wall sat on a cushion of air that allowed it to move during
impact. If the wall and F-4 moved together at 8.41 m/s during the collision,
what was the speed of the F-4 Phantom upon impact?

Answers

Answer:

The speed of the F-4 Phantom upon impact is approximately 214.92 m/s

Explanation:

The given parameter of the motion of the F-4 Phantom jet aircraft are;

The mass of the F-4 phantom rocket, m₁ = 19,100 kg

The mass of the retaining wall, m₂ = 469,000 kg

The velocity of the combined mass of the wall and the F-4 after collision, v₃ = 8.41 m/s

The retainment wall was initially at rest, therefore, v₂ = 0 m/s

Let 'v₁', represent the speed of the F-4 Phantom upon impact

By the principle of conservation of linear momentum, we have;

m₁·v₁ + m₁·v₂ = m₁·v₃ + m₂·v₃ = (m₁ + m₂)·v₃

Plugging in the values, we have;

19,100 × v₁ + 469,000 × 0  = (19,100 + 469,000) × 8.41

∴ v₁ = (19,100 + 469,000) × 8.41/(19,100) = 214.917329843

v₁ ≈ 214.92

The speed of the F-4 Phantom upon impact, v₁ ≈ 214.92 m/s.


If the small piston has an area of .004 square
meters and Bob pushes down on it with 225 N of
force, what is the magnitude of the pressure
increase in the system?

Answers

The magnitude of the pressure : P = 56,250 N/m

Further explanation

Given

Area of 0.004 m²

Force 225 N

Required

the magnitude of the pressure

Solution

Pressure = force exerted per unit of surface area(perpendicular)

Can be formulated :

P = F/A

Input the value :

P = 225 N / 0.004 m

P = 56,250 N/m

When there are too many neutrons compared to the number of protons, the atomic nucleus is
A. Stable
B. Unstable
C. Explosive
D . Noble gases

Answers

Answer:

99.9% sure it B. Unstable but if that’s wrong try A.stable

Explanation:

Too many protons (or too few neutrons) in the nucleus result in an imbalance between forces, which leads to nuclear instability.

if a nucleus is unstable due to too many neutrons, it will undergo Beta decay - this means they become stable by emitting a beta particle.

Question 1
3 pts
When eating out in a restaurant, you
should

Answers

Answer:

Wear a mask and keep a solid 6 feet of social distance

Explanation:

Answer:

Be polite, wear a mask, social distance, don't eat sloppy, have a good time lol

Explanation:

Part C
How many combined bits of storage are there on the two tablets?

Answers

Answer:

IVE BEEN TRYNA FIND THE ANSWER FOR THE PAST HOUR T-T

Explanation:

Answer:

3.2 x10^11 bits of storage

Explanation:

Which distance increases?

Answers

Answer:

wY

Explanation:

it increases my mercury righy basically also on the atmosphere pressure

27. Julie and Ashwin were doing an experiment in the classroom. They
each had to move a 15 kg box. Julie was able to move her box, but
Ashwin was only able to move his after removing half the items in the
box. Which is true regarding the force he applies after removing the
items from the box?
a
He has to apply more force to lift the box
because the mass is greater.
b
He has to apply less force to lift the box
because the mass has decreased.
С
He has to apply a different type of force after
changing the mass.
d
He has to apply the same amount of force to
the box to overcome gravity.

Answers

Answer:

b. He has to apply less force to lift the box because the mass has decreased.

Explanation: i just took a ck12 test and it was right lol

Think about a situation at school where you or someone you know
has demonstrated grit. Describe the situation. Pls help me

Answers

Answer:

to have courage and show the strength of your character. ... A person with true grit has passion and perseverance. Goals are set and followed through.

Explanation:

for example: i had the passion and the courage to finish my school work and chores for i can go out with my friends and to get out of the house for a bit and have fun so i had the courage to finish chores from the house and do some schoolwork for i can finish ad hang out with some friends. so i had the strength to finish everything because i didn't want to be doing school work and chores any more so i had the passion to finish up quickly  

A book of mass 1.5 ,kg exerted a downward force on the table
What is the direction of this second force?

Answers

Answer:

up ward force it is balanced by dow ward force

1
AI
A3
If A1 = 27A and A3 = 1.9A, what would A2 read?

Answers

Answer:

0.8A

Explanation:

because im very intelligent and beautiful so the answer is correct and its 0.8A

Robert hook used an early microscope to observed a cork sample. How did this help contribute to cell theory?

Answers

Answer:

Robert Hooke used an early microscope to observe a cork sample. How did this help contribute to cell theory? It helped to show that cells contain water. ... It helped to show that some cells are visible to the naked eye.

Explanation:

If your teacher checks if it was copied just put it in your on words

a car takes 4 hours to cover a distance if it takes at a speed of 40mph. what should be it's speed to cover the same distance in 1.5 hours

Answers

Answer:

Speed = 106.67mph

Explanation:

Let the first motion be A.

Given the following data;

Speed A = 40mph

Time A = 4 hours

To find the distance covered in A;

Distance = speed * time

Distance = 40 * 4

Distance = 160 miles.

To find the speed required to cover the above distance in 1.5 hours;

Speed = distance/time

Speed = 160/1.5

Speed = 106.67mph

mary travelled 70mph due north
this is an example of
Acceleration
distance
speed
velocity

Answers

Velocity because It is defined as the change in the position with respect to the time. Velocity is a vector quantity that means it depends on the magnitude and direction of an object. The S.I unit of velocity is, m/s

Acceleration : It is defined as the rate of change of velocity of an object wit respect to the time. Acceleration is a vector quantity that means it depends on the magnitude and direction of an object. The S.I unit of acceleration is, m/s to the power of 2

Distance : It is defined as the how far an object has traveled in time. Distance is a scalar quantity that means it is depends on the magnitude of an object only. The S.I unit of distance is, m

Speed : It is defined as the distance traveled by an object in unit time. Speed is also a scalar quantity. The S.I unit of speed is, m/s

Mary traveled 70 miles/hour due north. This is an example of velocity. 70 miles/hour tell us about the magnitude of the object and north tell us about the direction of an object.
Hence, the correct option is, velocity.







Student agrees to do only 300 joules of work, how far will the student push the box using a constant 84 N force

Answers

Answer:

Explanation:

Work = Force*Distance

300 = 84*d

d = 3.57 meters

What is the centripetal acceleration of an object moving 25 m/s around a 6 m curve?

O 104.2

O 84.2

O 64.2.

O 44.2

Answers

Answer:

Centripetal acceleration = 104.2 (Approx)

Explanation:

Find:

Centripetal acceleration

Given:

Velocity = 25 m/s

Radius r =6 m

Computation:

Centripetal acceleration = v² / r

Centripetal acceleration = 25² / 6

Centripetal acceleration = 104.467

Centripetal acceleration = 104.2 (Approx)

what kind of waves travel as transverse waves
A. Only mechanical
B. All waves
C. Some waves
D. No waves

Answers

Answer:

C. Some waves

Explanation:

The answer is some waves because transverse waves are not the only types of waves we have on the earth. We also have longlitudal waves, which means only some waves can only be transverse. The answer to the question should be C. Some waves.

If a girl does 1,350 Joules of work to pedal her bike using a force of 75 N, how far did she ride her bike?

Answers

Answer:

D = 18m

Explanation:

We use this formula:

Work = Force * Distance

Now, we replace it:

W = F*D

1,350J = 75N * D

D = 1,350/75

D = 18m

Hope it was helpful ;)

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