A golden guide to energy in thermal Processes
Physics 2 Videos
1. Electric Fields and Forces
• Electric Forces and Fi...
2. Current , resistance and Kirchoff's Law
• Current and Resistance...
3.Magnetism
• Electromagnetism revea...
4. Electromagnetic Induction
• Uncovering Faraday's L...
5.AC Circuits
• AC Circuits - resistan...
6.Thermal Physics
• Ideal gas equation + k...
7. Energy in thermal Processes
• Energy in thermal proc...
8. The Laws of Thermodynamics
• The Laws of Thermodyna...
9.Modern Physics
• Photoelectric effect :...
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Physics 1 Videos
Units, Dimensions and Vectors
• Units, Dimensions and ...
Motion in one dimension
• Motion in One Dimensio...
Reflection and Refraction of Light
• The science of light :...
Sound
• The ultimate guide to ...
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Problem Exercises
1
A 50-g sample of copper is at 25°C. If 1 200 J of energy is added to the copper by heat, what is its final temperature?
2. As part of an exercise routine a 50.0-kg person climbs 10.0 m up a vertical rope. How many (food) Calories are expended in a single climb up the rope? (1 food Calorie = 103 calories)
6
3. A 75.0-kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 500 (food) Calories. How high must the person climb? (1 food Calorie = 10³ calories)
4. A 5.00-g lead bullet traveling at 300 m/s is stopped by a large tree. If half the kinetic energy of the bullet is trans formed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in temperature of the bullet?
5. A 1.5-kg copper block is given an initial speed of 3.0 m/s on a rough horizontal surface. Because of friction, the block finally comes to rest. (a) If the block absorbs 85% of its initial kinetic energy as internal energy, calculate its increase in temperature. (b) What happens to the remaining energy?
9. A 100-g cube of ice at 0°C is dropped into 1.0 kg of water that was originally at 80°C. What is the final temperature of the water after the ice melts?
10. A 100-g ice cube at 0°C is placed in 650 g of water at 25°C. What is the final temperature of the mixture
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0:00 - Intro
0:11 - Question 1
3:46 - Question 2
7:24 - Question 3
10:47 - Question 4
14:54 - Question 5
19:18 - Question 9,10
#heat #energy #thermal
Негізгі бет Energy in thermal processes (physics 2)
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