Ice Definition and 980 Threads

[SOLVED] Thermodynamics and ice melting. Homework Statement An open container holds ice of mass 0.585 kg at a temperature of -13.3 *C. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 800 J/min. The specific heat of ice to is 2100 J/Kgand...

Help...melting ice cube. Homework Statement How much time is needed for an ice cube ((1.5x1.5x1.5)m, 3tons of mass with two golden bars within an ice cube to melt. Average temerature of the month is 6.2 ˙C Thank you very much!

Aim: How does the volume of water at a given temperature affect the amount of ice that can melt in it? I did a lab experiment. I put ice in different volumes of water and waited for 5minutes. I measured the amount of ice melted and the final temperature of water. RESULT: (starting...

Hi, I have problems with charge distributions of buckets and other conductors which has a cavity. If there is experiments, photos, detailed examples about this kind of charges then glad to learn the links in net. Suppose have a conductor like Faraday ice bucket. And tied two un-charged...

[SOLVED] Thermo Energy. Iron + Ice Homework Statement A 50-g chunk of 80 degree C iron is dropped into a cavity in a very large block of ice at 0 degrees C. How many grams of ice will melt? (The specific heat capacity of iron is .11 cal/g*C)Homework Equations Q = cmdeltaT Quantity of heat =...

Hi. My physics knowledge is very limited, but I know a decent amount. I would greatly appreciate it if you could explain in as much detail as you can. Thanks. That said. Imagine you have a container of water in excess. You have a mass M of ice floating on top of the water. Tied to the ice...

Show that the Coriolis force makes the puck move in a circle as seen in Earth's rotating frame I need help setting this up! Homework Equations -2m\varpix v The Attempt at a Solution So far i have a drawing The Earth on an xyz axis, z up, y across, and x in an out of paper. the puck is on...

James and Ramon are standing 20.0 m apart on the slippery surface of a frozen pond. Ramon has mass 60.0 kg and James has mass 90.0 kg. Ramon pulls on the rope to give himself a speed of 0.70 m/s. What is James's speed? From what I understand, since there is an external force due to Ramon's...

Hey check this out: I put 3pieces of ice in a glass and then put water. I left the glass alone for about 5minutes. When i came back i realized that those 3 pieces of ices were a bit sicked one another. So what should be the scientific explanation?

Well... It is first first time on the Physics Forums, and I'm stuck on this problem: 1. A 2.5 kg block of ice at a temperature of 0.0 °C and an initial speed of 5.7 m/s slides across a level floor. if 3.3 × 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the...

A 10g ice cube at -10C is placed in a lake whose temp is 15C, calculate the change in entropy of the cube-lake system as the ice comes to thermal equilibrium with the lake. specific heat of ice is 2220 J/KgK Homework Equations Q(released)=Q(absorbed) U=Q-W S=Q/T L(f)water=333kJ/kg...

Homework Statement A 300 cm3 glass is filled with 120 g of ice at 0°C and 210 g of water at 25°C. (a) Characterize the content of the glass after equilibrium has been reached. Neglect heat transfer to and from the environment. Find: mass of water? mass of ice...

Hi, having a problem with the ice sticking to the mould. I have to use alginate for the mould and when the water freezes, so does the alginate.The moulds are part of my art project and they take amazing detail. I don't know whether I'm making sense here but is it possible to use something in...

Is there anybody that can tell me if I'm doing this question right? Metallic Ca reacts with hydrochloric acid according to the following equation: Ca(s) + 2 HCl(aq) ---> 2 CaCl2 (aq) + H2(g) The enthalpy change associated with this reaction can be determined with an ice calorimeter. If...

Where are the in relation to the fuel lines on a Boeing 777

The John Hancock Center In Chicago Is The Tallest Building In The United States In Which There Are Residential Apartments. The Hancock Center Is 343m Tall. Suppose A Resident Accidentally Causes A Chunk Of Ice To Fall From The Roof. What Would Be The Velocity Of The Ice As It Hits The Ground...

ice displacing water question, --need help really bad Homework Statement A rectangular block of ice 6 m on each side and 1.1 m thick floats in seawater. The density of the seawater is 1025 kg/m3. The density of ice is 917 kg/m3. How high does the top of the ice block float above the water...

I realize that there has been a post recently concerning this sort of thing but i think it went a bit off topic for me to follow. :) The question is Consider a bowl containing 1 mol of ice at a temperature of -10C and atmospheric pressure. The sample is heated very slowly to 115C. Split the...

ice as in internal combustion engine, sorry for confusion Homework Statement I'm given an engine operating on the dual cycle and asked to find the thermal efficiency and the mean effective pressure. the compression ratio is 18:1, the temperature at the start of the compression 300K and the...

Would someone explain to me why back pressure is not needed on a 4-stroke engine and what exactly is exhaust back pressure? Thanks guys and gals.

I have the answer, it is because the refrigerator is not in freeizng mode when the cold ice cube tray is placed inside. When the warm tray of water is placed inside then the temperature lowers considerably and the thermostat switches the freezer into freezer mode. A common complication I...

Suppose you wanted to make an ice cream cone that would hold as much ice cream as possible (do not assume ice cream comes in spheres). Challenge I Cut a wedge from a circle and remove it. From the remaining piece of the circle into a cone. Find the angle of the wedge that produces the cone...

Homework Statement I'm trying to calculate the power required to melt a 57.65g mass of ice, using what my professor calls a "thermoelectric heater and cooler consisting of many thermocouples" (I think its really called a Thermopile, but I havn't heard him use the term.) I took...

Homework Statement A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. In 5 minutes of operation of the engine, the heat rejected by the engine melts a mass of ice equal to 3.50×10−2 kg ...

Homework Statement A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. In 5 minutes of operation of the engine, the heat rejected by the engine melts a mass of ice equal to 3.30×10^-2 kg...

Melting Ice With Aluminum?? Homework Statement How many grams of aluminum at 90 degrees C would have to be dropped into a hole in a block of ice at 0.0 degrees C to melt 10 g of ice? Homework Equations Q = (m)(c)(deltaT) c of aluminum = 0.9 c of ice = 2.1 c of water = 4.186 333.7...

[SOLVED] Universal Gravitation Ice Rink Problem! :) never mind

Homework Statement Find the volume of an ice cream cone bounded by the sphere x^2+y^2+z^2=1 and the cone z=sqrt(x^2+y^2-1) Homework Equations The two simultaneous equations yield x^2+y^2=1 The Attempt at a Solution Attached

Disney's movie "Ice Princess" mistake? so I watched the movie over the summer... here's word for word out of the script "Now, l'm going to increase the centripetal force by tucking in my arms. This will increase my moment of inertia, so l will spin...faster." so it's been bugging...

1. My professor gave us an extra credit problem in which we have to prove that water level does not change when ice melts. [b]2. (v)ice=(v)displaced water [b]3. any ideas?

Homework Statement (a) What is the buoyant force on 0.70 kg of ice floating freely in liquid water? _____ N upward (b) What is the buoyant force on 0.70 kg of ice that is held completely submerged under water? ______N upward Homework Equations ? The Attempt at a Solution...

Homework Statement A person of mass M is standing at one end of a board of mass m and length l. The board rests upon frictionless ice surface, and its mass is uniformly distributed along its length. The person now walks to the center of the board and stops. In terms of the given quantities...

Board on Ice 1. A person of mass M is standing at one end of a board of mass m and length l. The board rests upon a frictionless ice surface and it's mass is uniformly distributed along its length. Calculate how far from the person, d, the centre of mass is of the system. The person then walks...

I decided to speed things up by scrapping off the ice and I punctured the side of the ice box. I used some silicone filler to seal it. Will it work?

Another URGENT HELP problem: Steam to Ice Homework Statement How many J of energy must be removed when 127.0 g of steam, at a temperature of 153.0°C, is cooled and frozen into 127.0 g of ice at 0°C? Take the specific heat of steam to be 2.1 kJ/(kg·K). Homework Equations Q1 = mc(delta...

Homework Statement How many J of energy must be removed when 145.0 g of steam, at a temperature of 188.0°C, is cooled and frozen into 145.0 g of ice at 0°C? Take the specific heat of steam to be 2.1 kJ/(kg·K). Homework Equations Q=m*L The Attempt at a Solution Energy =...

Homework Statement A block of ice at 0°C whose mass initially is m = 50.0 kg slides along a horizontal surface, starting at a speed vo = 5.72 m/s and finally coming to rest after traveling a distance d = 21.37 m. Compute the mass of ice melted as a result of the friction between the block...

200g of steel was placed on a big block of ice. The ice was 0 degrees C. The metal was 150 degrees C. How much ice gets melted? My attempt: Q=mc(changeinT) Q=.2(460)150 Q=13800 Q=ML 13800=M(3.34x10^5) M=.041317 kg is melted Is this correct?

Homework Statement 5L of liquid nitrogen @ -205 degree celsius and 1L of liquid ice cream @ 15 degree celsius - they are both mixed. upon mixture nitrogen evaporates and ice cream hardens or freezes. Assuming only 14% of the energy gained by the nitrogen in the process of warming to room...

Please help...How much ice melts? Homework Statement A 70 gram bullet traveling at 250 m/s penetrates a block of ice at 0 degrees Celsius and comes to rest within the ice. Assuming that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the...

any one know the formula for an ice skater in an increasing spin

hi everyone this is a related rates question no one in the class could solve it. I could not find how to find the equation that relate all the things in the question.the question is: A spherical iron ball 8 in. in diameter is coated with a layer of ice of uniform thickness. If the ice melts...

Hi, This is not directly related to any assignment but I have a question. Is it better (meaning the drinks in the cooler will stay cold longer) to leave the cold water in a cooler or to drain the cold water out of the cooler. Personally, I am inclined to think that you maintain a higher...

A cubical block of ice is melting in such a way that each edge decreses steadily by 8.8 cm every hour. At what rate is its volume decreasing when each edge is 5 meters long? this is my work Let l=l(t) be the length of each edge at time t then volume = l^3 dl/dt = 8.8cm/h = .088m/h...

Can someone help me understand this: By salting the crushed ice, the beer got cold faster. Why?! I have recently studied some Enthalpy, so if anyone could give me an explanation to this using anything related to Enthalpy I'd be very grateful!

Homework Statement You are planning a stunt to be used in an ice skating show. For this stunt a skater will skate down a frictionless ice ramp that is inclined at an angle of 15° above the horizontal. At the bottom of the ramp, there is a short horizontal section that ends in an abrupt drop...

The question is: Two horizontal forces F1 and F2 act on a 1.8 kg disk that slides over frictionless ice, on which an xy coordinate system is laid out. Force F1 is in the negative direction of the x-axis and has a magnitude of 3.0 N. Force F2 has a magnitude of 9.0 N. The figure below gives...

I'm looking for a one single solid textbook about Ice Ages. People are mentioning Imbrie's "Ice Ages" but it looks just a little old. I'll borrow it soon. Thanks for your interest.

The Question: (1) You are standing on a sheet of ice that covers a parking lot; there is negligible friction between your feet and the ice. A friend throws you a 0.400 kg ball that is traveling horizontally at 10.2 m/s. Your mass is 73.4 kg. (a) If you catch the ball, with what speed do...

You are driving a 2580.0 kg car at a constant speed of 14.0 m/s along an icy, but straight, level road. As you approach an intersection, the traffic light turns red. You slam on the brakes. Your wheels lock, the tires begin skidding, and the car slides to a halt in a distance of 26.4 m. What is...