Part 1
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 [...]
The equation of state of gas is given (P + (aT^(2)) / (V))V^( c) = (RT + b) where a, b, c and R are constant. The isotherms can be represented by P = AV^(m) – BV^(n), where A and B depend only on temperature and
08
Sep
The equation of state of gas is given (P + (aT^(2)) / (V))V^( c) = (RT + b) where a, b, c and R are constant. The isotherms can be represented by P = AV^(m) – BV^(n), where A and B depend only on temperature and B c and R are constant. The isotherms can [...]
When an air bubble of radius ‘r’ rises from the bottom to the surface of a lake, its radius becomes 5r/4 (the pressure of the atmosphere is equal to the 10 m height of water column). If the temperature is constant and the surface tension is neglected, the depth of the lake is
08
Sep
When an air bubble of radius ‘r’ rises from the bottom to the surface of a lake, its radius becomes 5r/4 (the pressure of the atmosphere is equal to the 10 m height of water column). If the temperature is constant and the surface tension is neglected, the depth of the lake is its radius [...]