A 22 g block of ice is cooled to −70 ◦C. It is added to 589 g of water in an 83 g copper calorimeter at a temperature of 21◦C. Find the final temperature. The specific heat of copper is 387 J/kg · ◦C and of ice is 2090 J/kg ·◦C . The latent heat of fusion of water is 3.33 × 105 J/kg and its specific heat is 4186 J/kg · ◦C . Answer in units of ◦C

Answers

Answer 1
The answer is a sorry if I’m wrong

I

Related Questions

What are the products(what comes out of) photosynthesis

A. Carbon dioxide , water, sunlight
B. Glucose and carbon dioxide
C. Carbon dioxide water and light energy
D. Glucose and oxygen

Please answer this if you don’t know the answer don’t answer ( dont guess randomly) 11 points

Answers

Answer:

D

Explanation:

the 3 products of photosynthesis are glucose (sugar), oxygen and water. D just doesn't include water.

Answer:

It would be C

Explanation:

plants convert carbon dioxide from the air into oxygen.

A drop of oil of volume 10 ^-10 m3 spreads out on water to make a circular film radius 10^-1m what is the thickness of the film

Answers

Answer:

The thickness of the film is = 3.183e-9m

Explanation:

It will help us if we understand that the shape of the circular film can be approximated to be a cylinder. The height of this cylinder, or its thickness, in this case, will be very small.

Since we can approximate the shape of the drop of oil to be a cylinder, after it has spread out on the surface of the water, we can use the cylindrical geometric formulas to find out how thick the film is.

The volume of a cylinder = [tex]\pi r^2 h[/tex]

our radius is given as [tex]10^{-1}m = 0.1m[/tex]

the volume is [tex]10 ^{-10} m^3=1e-10m^3[/tex]

Remember that our task is to find the height of the cylinder. We can do this by making the height the subject of the formula.

[tex]h = \frac{Volume}{\pi r^2} = \\\\\frac{1e-10}{\pi \times 0.1^2} = 3.183e-9m[/tex]

Therefore, the thickness of the film is = 3.183e-9m

how do we calculate the value of work?

Answers

The percent complete is calculated by dividing the quantity of material progressed at a point in time by the total quantity required for the project. The resulting percent is multiplied by the current agreed committed value of the material item to obtain the VOWD for that item.

Answer:

Work = Force × Distance

Explanation:

Work = Force × Distance

The SI unit of work is Joule

-TheUnknownScientist

What did the Federal Highway Act do?
a.
It paid Henry Ford to build inexpensive cars to sell to the working-class.
b.
It allowed only wagons and stagecoaches to operate on newly constructed roads.
c.
It authorized construction of interconnected highways.
d.
It capped road construction at 36,000 miles.

Answers

Answer:

c.

Explanation:

Answer:

The Letter answer that best fits the question is C(It authorized construction of interconnected highways.)

Explanation:

I took the test

What conditions would probably exist the dew point and dry bulb temperatures to be the same at the ground ?

Answers

Answer: The conditions would probably exist the drew point and dry bulb temperatures to be the same at the ground because When the dew point temperature and air temperature are equal, the air is said to be saturated. Dew point temperature is NEVER GREATER than the air temperature. Therefore, if the air cools, moisture must be removed from the air and this is accomplished through condensation.

Explanation:

Since the air is said to be saturated when the dew point temperature and air temperatures are equal, the circumstances are likely present for the dew point and dry bulb temperatures to be equal at the ground. NEVER is the dew point temperature higher than that of the air temperature. As a result, condensation is used to remove moisture from the air when it cools.

What is dew point temperature?

The dew point, under the assumption of constant air pressure and water content, is the temperature at which air must be chilled to become water vapor condenses. Airborne vapor will condense to create liquid water, known as dew, when it is cooled below the dew point, thereby moisture capacity.  If this occurs via coming into contact with a cooler surface, dew will grow there.

Humidity influences the dew point. The dew point rises as the amount of moisture in the atmosphere increases.

To know more about dew point temperature:

https://brainly.com/question/11375358

#SPJ2

When bitten by an animal, one should:

Keep the animal under observation for 14 days

Stay under observation for a doctor for 14 days

Wait for symptoms to develop

Consider rabies injections if the animal is not found

Please hurry!

Answers

Answer:

consider rabies injections if the animal is not found

hope it helps

Answer:

I think flush it out with soap and water for a while but for first aid Consider rabies injections

Explanation:

A pelican flying along a horizontal path drops a fish from a height of 12.3 m. the fish travels 16.0m horizontally before it hits the water below. What is the Pelican's initial speed?

Answers

Answer:

10.1 m/s

Explanation:

Let the coordinates of the pelican's position be (x, y).

Now, since it is dropped from a height of 12.3 m, then initial velocity is zero and using Newton's 2nd law of motion, we have;

12.3 = 0 - ½gt²

½gt² = 12.3

t² = 12.3 × 2/9.8

t² = 2.51

t = √2.51

t = 1.5843 s

Now, it travels 16.0m horizontally before it hits the water below. Using the formula, distance = speed × time, we have;

16 = v_x•t

Thus;

16 = v_x × 1.5843

v_x = 16/1.5843

v_x = 10.1 m/s

Now, the velocity in the vertical y-direction is zero.

Thus;

v = √((v_x)² + (v_y)²)

v = √((10.1² + 0²))

v = 10.1 m/s

1.-Una fuerza horizontal de 40 N es apenas suficiente para poner en marcha un trineo de 600 N sobre nieve compacta. Después de empezar el movimiento se requieren tan solo 10 N para mantener el trineo a rapidez constante. Halle los coeficientes de fricción estática y cinética

Answers

Answer:

Los coeficientes de fricción estática y cinética son [tex]\frac{1}{15}[/tex] y [tex]\frac{1}{60}[/tex], respectivamente.

Explanation:

Por la Primera Ley de Newton, sabemos que la fuerza externa debe tener igual magnitud y dirección contraria a la fuerza de reacción (fricción). Puesto que el trineo se mueve sobre una superficie horizontal, la magnitud de la fuerza normal es la del peso ([tex]W[/tex]), en newtons. El coeficiente de fricción estática ([tex]\mu_{s}[/tex]), sin unidad, es la razón de la fuerza de fricción justo antes del movimiento inminente ([tex]F[/tex]), en newtons, a la fuerza normal ([tex]N[/tex]), en newtons:

[tex]\mu_{s} = \frac{F}{W}[/tex] (1)

Si sabemos que [tex]F = 40\,N[/tex] y [tex]W = 600\,N[/tex], entonces el coeficiente de fricción estática es:

[tex]\mu_{s} = \frac{F}{W}[/tex]

[tex]\mu_{s} = \frac{40\,N}{600\,N}[/tex]

[tex]\mu_{s} = \frac{1}{15}[/tex]

El coeficiente de fricción cinética ([tex]\mu_{k}[/tex]), sin unidad, es la razón de la fuerza de fricción experimentada por el trineo en movimiento ([tex]F[/tex]), en newtons, a la fuerza normal:

[tex]\mu_{k} = \frac{F}{W}[/tex] (2)

Si sabemos que [tex]F = 10\,N[/tex] y [tex]W = 600\,N[/tex], entonces el coeficiente de fricción cinética es:

[tex]\mu_{k} = \frac{F}{W}[/tex]

[tex]\mu_{k} = \frac{10\,N}{600\,N}[/tex]

[tex]\mu_{k} = \frac{1}{60}[/tex]

Los coeficientes de fricción estática y cinética son [tex]\frac{1}{15}[/tex] y [tex]\frac{1}{60}[/tex], respectivamente.

Please help, I’m being timed! I will give brainliest!!!!!!!

Answers

Answer:

The Answer is gonna be A. It will speed up

Explanation :if it has the same velocity it will only change if the weight is less

This is the Answer

I hope I helped

I hope you are having a great day :3:3:3:3:3:3

Answer:

B

Explanation:

Why would it speed up if it is the same velocity??

It would stay at teh same speed. It would only increase if it weighed less.

42 POINTS!!!!

are players trying to minimize or maximize friction when playing volleyball?

Answers

None

Friction in Volleyball

Frication plays a huge role in every aspect of our lives; it can play a negative or positive role. In volleyball there are various types of friction that have positive influences on the way the game is played and there are others that play a negative role in the way the game is played.

Positive friction in volleyball.

In volleyball the aim of the game is to strike a ball into play that your opponent cannot return or finds it difficult to return. A friction force that makes this possible is the friction of the air on the ball, for example when a player hits a ball with topspin into play, the friction of the air on the ball makes it spin faster than it otherwise would. Topspin makes a ball harder to pick-up and pass to the setter.  

Another force that is present is the ball itself, if there was no friction it would be virtually impossible to pass set, or hit the ball, the ball would just slip through your arms or hands.

When jumping a player also uses the frictions of their feet on the floor to gain a higher jump to strike the ball at maximal height, if this didn't exist players would be slipping and sliding around all over the court.  

Negative friction in volleyball.

Friction also plays a negative part in the game of volleyball, when a player dives for a ball the friction of the court on their skin causes court burn or friction burn. Although the friction of the rubber soles of shoes on the court is a positive it can also be a negative, if there is too much friction players can become injured from the sudden stopping that the friction can cause. Some injuries that can result from this would be hyperextensions of the knees and or ankle injuries.

None. In volleyball rolling, sliding, and fluid friction all influence the movements in volleyball. Rolling friction does contribute to the volleyball. Fluid friction helps the ball fly through the air. The heavier the ball, the quicker it will accelerate. In volleyball the aim of the game is to strike a ball into play that your opponent cannot return or finds it difficult to return. A friction force that makes this possible is the friction of the air on the ball.

A proton is 0.9 meters away from a 1.4 C charge. What is the magnitude of the electric force between the proton and the charge

Answers

Answer:

F = 2.49 x 10⁻⁹ N

Explanation:

The electrostatic force between two charged bodies is given by Colomb's Law:

[tex]F = \frac{kq_1q_2}{r^2}\\[/tex]

where,

F = Electrostatic Force = ?

k = colomb's constant = 9 x 10⁹ N.m²/C²

q₁ = charge on proton = 1.6 x 10⁻¹⁹ C

q₂ = second charge = 1.4 C

r = distace between charges = 0.9 m

Therefore,

[tex]F = \frac{(9\ x\ 10^9\ N.m^2/C^2)(1.6\ x\ 10^{-19}\ C)(1.4\ C)}{(0.9\ m)^2}[/tex]

F = 2.49 x 10⁻⁹ N

31.5N

I have confirmed it is the right answer.

5. What type of sound wave shape forms behind an object traveling faster than the speed of sound?
- a cone
- a long, flat tail
- a bowl-shape
- a sphere

Answers

The first one, a cone.

what is frictional less pulley​

Answers

Answer:

Conditions under which the belt and pulleys are operating – The friction between the belt and pulley may decrease substantially if the belt happens to be muddy or wet, as it may act as a lubricant between the surfaces.

Explanation:

I hope that this would be helpful

In which of the following situations is the Doppler effect absent?

Answers

The source and the observer are moving towards each other. The observer is moving toward the source. The source is moving away from the observer

a stone is thrown horizonttaly from a cliff of a hill with an initial velocity of 30m/s it hits the ground at a horizontal distance of 80m from the foot of the hill how long does a stone travel? what is the height of the hill? (please show the process)​

Answers

Answer:

a) Time = 2.67 s

b) Height = 35.0 m

Explanation:

a) The time of flight can be found using the following equation:

[tex] x_{f} = x_{0} + v_{0_{x}}t + \frac{1}{2}at^{2} [/tex]   (1)

Where:

[tex] x_{f}[/tex]: is the final position in the horizontal direction = 80 m

[tex] x_{0}[/tex]: is the initial position in the horizontal direction = 0

[tex]v_{0_{x}}[/tex]: is the initial velocity in the horizontal direction = 30 m/s

a: is the acceleration in the horizontal direction = 0 (the stone is only accelerated by gravity)

t: is the time =?  

By entering the above values into equation (1) and solving for "t", we can find the time of flight of the stone:  

[tex] t = \frac{x_{f}}{v_{0}} = \frac{80 m}{30 m/s} = 2.67 s [/tex]

b) The height of the hill is given by:

[tex] y_{f} = y_{0} + v_{0_{y}}t - \frac{1}{2}gt^{2} [/tex]

Where:

[tex] y_{f}[/tex]: is the final position in the vertical direction = 0

[tex] y_{0}[/tex]: is the initial position in the vertical direction =?

[tex]v_{0_{y}}[/tex]: is the initial velocity in the vertical direction =0 (the stone is thrown horizontally)            

g: is the acceleration due to gravity = 9.81 m/s²

Hence, the height of the hill is:

[tex] y_{0} = \frac{1}{2}gt^{2} = \frac{1}{2}9.81 m/s^{2}*(2.67 s)^{2} = 35.0 m [/tex]  

I hope it helps you!

Use the "Law of Reflection" to describe why you cannot see your reflection in a piece
of paper.

Answers

Answer:

it does not mirror the image

Which statement can be made about waves A and B? Wave A has a lower amplitude than Wave B. Wave A has a higher amplitude than Wave B. Wave A has a lower frequency than Wave B. Wave A has a higher frequency than Wave B.

Answers

Answer:

Wave A has a higher amplitude than Wave B.

Explanation:

please check the attached image for the waves

Answer:

b

Explanation:

got it right on edge

Use the drop-down menus to complete the sentences.

A thin wire has
resistance than a thick wire.

A short wire has
resistance than a long wire.

A warm wire has
resistance than a cool wire.

Answers

Answer:

A thin wire has more resistance than a thick wire

A short wire has less resistance than a long wire

A warm wire has more resistance than a cool wire

Answer: More, less, more

Explanation:

Edge 2021

One way to think about circular motion is that the object is continuously ____________.
A. Prevented from moving in a straight line.
B. Allowed to move in a straight line.
C. Forced to move in a straight line.
D. Encouraged to move in a straight line.

Answers

Answer:

A

Explanation:

circular motion means the object will follow a circular trajectory.

Answer:

the answer for the question is option A

A 140 g tennis ball travelling 30° east of north at 15 m/s is struck by a tennis racquet, giving it a velocity of 25 m/s, west. What are the magnitude and direction of the impulse given to the ball? Include a labelled diagram.

Answers

Answer:

The magnitude of the impulse is 1.4 Ns in the West direction.

Explanation:

The impulse equation is given by:

[tex]\Delta p=m\Delta v[/tex]

Where:

m is the mass of the ballΔv is the difference in velocity

So we will have:

[tex]\Delta p=0.140(25-15)[/tex]

[tex]\Delta p=1.4\: Ns[/tex]

Therefore, the magnitude of the impulse is 1.4 Ns in the West direction.

I hope it helps you!

Which energy transformation occurs in plants, allowing them to make food?

Answers

Photosynthesis is the one

Part C
What is likely to happen to the trees if the trend continues?

Answers

Answer:

The beetles consume the trees as food. So, if the trend continues, it’s likely that the trees will die out in the coming years

Explanation:

5. What is the name of the Scientist who began classification?
O Carl Linnaeus
O Albert Einstein
Sir Issac Newton

Answers

Answer:

Carl Linnaeus discovered Classification

Answer:

Carl Linnaeus

Explanation:

Mark me Brainllest

The metric unit that is most often used to describe weight is the _________​

Answers

Answer:

mass

Explanation:

mass is used in measuring weight. for example kg, tonnes

mass like kg :))))))))))))))

How are frequency, wavelength, and energy related? Choose all that apply.

Answers

Explanation:

The energy of a wave is given by :

[tex]E=\dfrac{hc}{\lambda}[/tex]

Where

h is Planck's constant

c is the speed of light

[tex]\lambda[/tex] is wavelength

Energy is inversely proportional to wavelength. Also, the relation between frequency and wavelength is inverse.

If the frequency is high, the wavelength will be shorter.

Hence, the correct options are :

Higher frequencies have shorter wavelengths.

Shorter wavelengths have lower energy.

Lower frequencies have lower energy.

What is the net force acting upon this object? *

3N : to the left
5 N : to the right
Answers to choose from:
2 N Right
BN
2 N Left
5 N Right

Answers

2 N Right

.. .. .. .. .. .. .. ..

Answer:

2 N Right

Explanation:

Net force = 5 - 3

= 2 N to the Right

I’m think 3 or 1.. am I right?

Answers

Answer:

C-3 I beleive it is three!!!!

Explanation:

Hope this helps!

Have a grreat day!

-Hailey

Answer:

it is n2+3

Explanation:

A gas of volume 2 m^3 at 27°C is (a) heated to 327°C, (b) cooled to - 123°C, at constant pressure.What are its new volumes?

Answers

Answer:

A. 4 m³

B. 1 m³

Explanation:

A. Determination of the new volume.

Initial Volume (V₁) = 2 m³

Initial temperature (T₁) = 27 °C + 273 = 300 K

Final temperature (T₂) = 327 °C + 273 = 600 K

Final volume (V₂) =?

V₁ / T₁ = V₂ / T₂

2 / 300 = V₂ / 600

Cross multiply

300 × V₂ = 2 × 600

300 × V₂ = 1200

Divide both side by 300

V₂ = 1200 / 300

V₂ = 4 m³

B. Determination of the new volume.

Initial Volume (V₁) = 2 m³

Initial temperature (T₁) = 27 °C + 273 = 300 K

Final temperature (T₂) = –123 °C + 273 = 150 K

Final volume (V₂) =?

V₁ / T₁ = V₂ / T₂

2 / 300 = V₂ / 150

Cross multiply

300 × V₂ = 2 × 150

300 × V₂ = 300

Divide both side by 300

V₂ = 300 / 300

V₂ = 1 m³

what three types of electromagnetic waves carry most of the sun's energy that strikes Earth. Do Not Send Me A Link.​

Answers

Answer:

The answer is C.

Answer:

The answer would be the second one I'm pretty sure.

Explanation:

Which of the following statements best describes a difference between
nuclear fission and nuclear fusion reactions?
Nuclei gain electrons during fission and release electrons during fusion.
Fission generates potential energy, and fusion generates kinetic energy.
С
C
Heavy nucleus split during fission and two light nuclei bind together during
fusion.
O
Fission forms heavier elements, and fusion forms lighter elements.

Answers

Answer:

C

Heavy nucleus split during fission and two light nuclei bind together during

fusion.

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