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If a sample of pure Gold is placed in calorimeter where the
If a sample of pure Gold is placed in calorimeter where the initial temp. is 125 degrees celsius and the final temperature is 50 degrees celsius, what is the heat capacity of the gold if the gold abso… read more
Neo
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A solid block of silver metal of unknown mass absorbs 350
A solid block of silver metal of unknown mass absorbs 350 Joules of heat when heated from a temperature of 25.0 0C to a temperature of 50.0 0C. If the specific heat of silver is 0.235 J/g0C, what is t… read more
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I need all the work displayed for the following problems 1.)
FOR Sandhya: I need all the work displayed for the following problems1.) If the half-life of a specific radioisotope is 7.2 days, how much activity would remain after 36 days?2.) How many joules of he… read more
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physics: A 1kg piece of copper and a 2 kg piece of copper have
physics: A 1kg piece of copper and a 2 kg piece of copper have the same internal energy. which has the higher temp?… read more
R.R. Jha
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Swedish to English translationSuppose we have 100 kg of 90
Swedish to English translation Suppose we have 100 kg of 90 degree water in a container. How much more energy in the water when the temperature is 90oC compared to 20oC is it? How much of this energy … read more
R.R. Jha
Bachelor's Degree
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A lead bullet initially at 12oC just melts upon striking a
A lead bullet initially at 12oC just melts upon striking a target. Assuming that all of the initial kinetic energy of the bullet goes into the internal energy of the bullet to raise its temperature an… read more
R.R. Jha
Bachelor's Degree
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An electric current heats a 225 g copper wire from 20.0 °C to 40.0 °C
Please show all work :) 1. An electric current heats a 225 g copper wire from 20.0 °C to 40.0 °C. How much heat was generated by the electric current? (ccopper = 0.093 cal/gm-deg) 2. A sample of silve… read more
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What is the efficiency of an electric kettle and how do you
What is the efficiency of an electric kettle and how do you calculate the energy in the water when the temperature rises from 12degC to 80degC?… read more
Paul R.
Staff Scientist
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if an electric furnace draws 80 amperes at 220 volts and the
if an electric furnace draw's 80 amperes at 220 volts and the temp. increase'across the furnace is 60degrees what should be the airlow in cubic feet per minute… read more
Paul R.
Staff Scientist
Master's Degree
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In this problem, you dont need to solve anything. There are
In this problem, you don't need to solve anything. There are several basic physics situations to analyze. For each analysis: Identify the physics of the situation; show the diagrams and/or equations t… read more
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Doctoral Degree
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RRJha, Please help me with the following problems. Same as always, I will give bonuses based on detail in the response, help with additional questions, and review of my final answer. Thank you! Questi… read more
R.R. Jha
Bachelor's Degree
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Suppose you want to heat 40kg of water by 20 degrees celsius.
Suppose you want to heat 40kg of water by 20 degrees celsius. How many joules of heat are required?… read more
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Master's Degree
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The specific heat of fusion of silver is 3210 calories per ...
The specific heat of fusion of silver is 3210 calories per mole and the specific heat of silver is 25.1 Joules per mole-kelvin. Calculate the energy required to melt 5.0 moles of silver if it starts a… read more
Scott
Master's Degree
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how much energy is given off as a mole of silver cools from ...
how much energy is given off as a mole of silver cools from its melting point to room temperature ( 24degrees celsius)?… read more
Shri (Mathpedia)
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(1) A 0.25 kg length of aluminum wire is warmed 10.0 C ...
(1) A 0.25 kg length of aluminum wire is warmed 10.0 C degrees by an electric current. How much hear was generated by the current? (Caluminum = 0.22 kcal/kg Cdeg ) (2) A 1,000.0 kg car with a speed of… read more
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I have two 68mm outlets from a heater, each blowing 40cfm ...
I have two 68mm outlets from a heater, each blowing 40cfm of air that has been raised from 15 degrees C to 70 degrees C (about 55 degrees Delta T). What is a simple formula to calculate btus expended … read more
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When 418 calories of heat are applied to a 180 gram piece ...
When 418 calories of heat are applied to a 180 gram piece of an unknown metal the temperature rises 75 degrees celsius. What is the metal?… read more
bharti
Master's Degree
why is water an exellent material to use in a calorimeter
why is it that water is used in a calorimeter when trying to determine the specific heat of an object?… read more
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Master Degree
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