Chapter 20 – Heat and Calorimetry
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An electric kettle takes 4 A current at 220 V. How much time will it take to boil 1 kg of water from temperature 20∘C? The temperature of boiling water is 100∘C
08
Sep
An electric kettle takes 4 A current at 220 V. How much time will it take to boil 1 kg of water from temperature 20∘C? The temperature of boiling water is 100∘C An electric kettle takes 4 A current at 220 V. How much time will it take to boil 1 kg of water from [...]
A lead bullet penetrates into a solid object and melts. Assuming that 50% of its kinetic energy was used to heat it, calculate the initial speed of the bullet. The initial temperature of the bullet is 27^∘ C and its melting point is 327^∘ C . Latent heat of fusion of lead = 2.5 × 10^4 J/k g and specific heat capacity of lead = 125 J/kg- K .
08
Sep
A lead bullet penetrates into a solid object and melts. Assuming that 50% of its kinetic energy was used to heat it, calculate the initial speed of the bullet. The initial temperature of the bullet is 27^∘ C and its melting point is 327^∘ C . Latent heat of fusion of lead = 2.5 × [...]
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A 50 Kg man is running at a speed of 18 Km H−1. If all the kinetic energy of the man can be used to increase the temperature of water from 20°C to 30°C ,
A lead bullet penetrates into a solid object and melts. Assuming that 50% of its kinetic energy was used to heat it ,
how much water can be heated with this energy? ,
Two bodies at different temperature are mixed in a calorimeter. Which of the following quantities remain conserved?
08
Sep
Two bodies at different temperature are mixed in a calorimeter. Which of the following quantities remain conserved? Two bodies at different temperature are mixed in a calorimeter. Which of the following quantities remain conserved? September 8, 2021 Category: Cengage NEET by C.P Singh , Chapter 20 - Heat and Calorimetry , Part 1 ,
A ball of mass 1 kg is dropped on a floor from a height of 2.0 m. After the collision it rises up to a height of 1.5 m. Assume that 40% of the mechanical energy lost goes as thermal energy into the ball. The rise in the temperature of the ball is
08
Sep
A ball of mass 1 kg is dropped on a floor from a height of 2.0 m. After the collision it rises up to a height of 1.5 m. Assume that 40% of the mechanical energy lost goes as thermal energy into the ball. The rise in the temperature of the ball is A 50 [...]
A metallic ball and highly stretched spring are made of the same material and have the same mass. They are heated so that they melt. The latent heat required
08
Sep
A metallic ball and highly stretched spring are made of the same material and have the same mass. They are heated so that they melt. The latent heat required A metallic ball and highly stretched spring are made of the same material and have the same mass. They are heated so that they melt. The [...]
If specific heat of a substance is infinite, its means
08
Sep
If specific heat of a substance is infinite, its means If specific heat of a substance is infinite its means September 8, 2021 Category: Cengage NEET by C.P Singh , Chapter 20 - Heat and Calorimetry , Part 1 ,
If heat is supplied to a solid, its temperature
08
Sep
If heat is supplied to a solid, its temperature If heat is supplied to a solid its temperature September 8, 2021 Category: Cengage NEET by C.P Singh , Chapter 20 - Heat and Calorimetry , Part 1 ,
The temperature of an object is observed to rise during a period. In this period:
08
Sep
The temperature of an object is observed to rise during a period. In this period: The temperature of an object is observed to rise during a period. In this period: September 8, 2021 Category: Cengage NEET by C.P Singh , Chapter 20 - Heat and Calorimetry , Part 1 ,
A 50 Kg man is running at a speed of 18 Km H−1. If all the kinetic energy of the man can be used to increase the temperature of water from 20°C to 30°C, how much water can be heated with this energy?
08
Sep
A 50 Kg man is running at a speed of 18 Km H−1. If all the kinetic energy of the man can be used to increase the temperature of water from 20°C to 30°C, how much water can be heated with this energy? A 50 Kg man is running at a speed of 18 Km [...]